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  1. Measurement of Charge Multiplicity Asymmetry Correlations in High Energy Nucleus-Nucleus Collisions at 200 GeV
    Autor*in: Adamczyk, L.; Borowski, W.; Kabana, S.
    Erschienen: 2014
    Verlag:  HAL CCSD ; American Physical Society

    26 pages, 25 figures, 2 tables ; see paper for full list of authors ; A study is reported of the same- and opposite-sign charge-dependent azimuthal correlations with respect to the event plane in Au+Au collisions at 200 GeV. The charge multiplicity... mehr

     

    26 pages, 25 figures, 2 tables ; see paper for full list of authors ; A study is reported of the same- and opposite-sign charge-dependent azimuthal correlations with respect to the event plane in Au+Au collisions at 200 GeV. The charge multiplicity asymmetries between the up/down and left/right hemispheres relative to the event plane are utilized. The contributions from statistical fluctuations and detector effects were subtracted from the (co-)variance of the observed charge multiplicity asymmetries. In the mid- to most-central collisions, the same- (opposite-) sign pairs are preferentially emitted in back-to-back (aligned on the same-side) directions. The charge separation across the event plane, measured by the difference, $\Delta$, between the like- and unlike-sign up/down $-$ left/right correlations, is largest near the event plane. The difference is found to be proportional to the event-by-event final-state particle ellipticity (via the observed second-order harmonic $v_2^{\rm obs}$, where $\Delta=(1.3\pm1.4({\rm stat})^{+4.0}_{-1.0}({\rm syst}))\times10^{-5}+(3.2\pm0.2({\rm stat})^{+0.4}_{-0.3}({\rm syst}))\times10^{-3}v_2^{\rm obs}$ for 20-40% Au+Au collisions. The implications for the proposed chiral magnetic effect (\cme) are discussed.

     
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    Übergeordneter Titel: ISSN: 2469-9985 ; EISSN: 2469-9993 ; Physical Review C ; http://hal.in2p3.fr/in2p3-00797208 ; Physical Review C, American Physical Society, 2014, 89, pp.044908. ⟨10.1103/PhysRevC.89.044908⟩
    Schlagworte: [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]; [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th]
  2. Azimuthal correlations of heavy quarks in Pb + Pb collisions at s√=2.76 TeV at the CERN Large Hadron Collider
    Autor*in: Nahrgang, Marlene; Aichelin, Joerg; Gossiaux, Pol-Bernard; Werner, Klaus
    Erschienen: 2014
    Verlag:  HAL CCSD ; American Physical Society

    In this paper we study the azimuthal correlations of heavy quarks in Pb+Pb collisions with $\sqrt{s}=2.76$ TeV at LHC. Due to the interaction with the medium heavy quarks and antiquarks are deflected from their original direction and the initial... mehr

     

    In this paper we study the azimuthal correlations of heavy quarks in Pb+Pb collisions with $\sqrt{s}=2.76$ TeV at LHC. Due to the interaction with the medium heavy quarks and antiquarks are deflected from their original direction and the initial correlation of the pair is broadened. We investigate this effect for different transverse momentum classes. Low-momentum heavy-quark pairs lose their leading order back-to-back initial correlation, while a significant residual correlation survives at large momenta. Due to the larger acquired average deflection from their original directions the azimuthal correlations of heavy-quark pairs are broadened more efficiently in a purely collisional energy loss mechanism compared to including radiative corrections. This discriminatory feature survives when next-to-leading order production processes are included.

     
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    Übergeordneter Titel: ISSN: 2469-9985 ; EISSN: 2469-9993 ; Physical Review C ; http://hal.in2p3.fr/in2p3-00835775 ; Physical Review C, American Physical Society, 2014, 90, pp.024907. ⟨10.1103/PhysRevC.90.024907⟩
    Schlagworte: [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph]; [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]; [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th]
  3. J/psi production and nuclear effects in p-Pb collisions at sqrt(sNN)=5.02 TeV
    Autor*in: Abelev, B.; Aphecetche, Laurent; Baek, Y.W.; Baldisseri, A.; Barret, V.; Bastid, N.; Belikov, I.; Bergognon, A.A.E.; Borel, H.; Bregant, M.; Castillo Castellanos, J.; Charvet, J.L.; Cheshkov, C.; Cheynis, B.; Crochet, P.; Delagrange, H.; Ducroux, L.; Dupieux, P.; Erazmus, B.; Estienne, Magali; Germain, Marie; Grossiord, J.-Y.; Guilbaud, Maxime; Lardeux, A.; Li, S.; Lopez, X.; Manso, F.; Marchisone, M.; Martinez Garcia, Gines; Martin Blanco, J.; Mas, A.; Massacrier, L.; Molnar, L.; Pereira da Costa, H.; Pillot, Philippe; Porteboeuf-Houssais, S.; Rakotozafindrabe, A.; Rosnet, P.; Roy, C.; Sanchez Castro, X.; Schutz, Y.; Shabetai, Alexandre; Stocco, Diego; Tieulent, R.; Uras, A.; Vernet, R.; Vulpescu, B.; Yang, H.; Zhang, X.; Zoccarato, Y.
    Erschienen: 2014
    Verlag:  HAL CCSD ; Springer

    Comments: 20 pages, 6 captioned figures, 0 tables, authors from page 15 to page 17 ; see paper for full list of authors ; Inclusive J/psi production has been studied with the ALICE detector in p-Pb collisions at sqrt(sNN) = 5.02 TeV at the CERN LHC,... mehr

     

    Comments: 20 pages, 6 captioned figures, 0 tables, authors from page 15 to page 17 ; see paper for full list of authors ; Inclusive J/psi production has been studied with the ALICE detector in p-Pb collisions at sqrt(sNN) = 5.02 TeV at the CERN LHC, in the rapidity domains 2.03 < ycms < 3.53 and -4.46 < ycms < -2.96, down to zero transverse momentum. The J/psi measurement is performed in the Muon Spectrometer through the mu+ mu- decay mode. In this paper, the J/psi production cross section and the nuclear modification factor R(pPb) for the rapidities under study are presented. While at forward rapidity, corresponding to the proton direction, a suppression of the J/psi yield with respect to binary-scaled pp collisions is observed, in the backward region no suppression is present. The ratio of the forward and backward yields is also shown differentially in rapidity and transverse momentum. Theoretical predictions based on nuclear shadowing, as well as on models including, in addition, a contribution from partonic energy loss, are in fair agreement with the experimental results.

     
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    Übergeordneter Titel: ISSN: 1126-6708 ; EISSN: 1029-8479 ; Journal of High Energy Physics ; https://hal.in2p3.fr/in2p3-00856719 ; Journal of High Energy Physics, Springer, 2014, 2, pp.073. &#x27E8;10.1007/JHEP02(2014)073&#x27E9;
    Schlagworte: [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]; [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
  4. Neutral pion cross section and spin asymmetries at intermediate pseudorapidity in polarized proton collisions at sqrt{s} = 200 GeV
    Autor*in: Adamczyk, L.; Borowski, W.; Kabana, S.
    Erschienen: 2014
    Verlag:  HAL CCSD ; American Physical Society

    11 pages, 9 figures, REVTeX 4.1, Submitted to Phys. Rev. D ; see paper for full list of authors ; The differential cross section and spin asymmetries for neutral pions produced within the intermediate pseudorapidity range 0.8 < {\eta} < 2.0 in... mehr

     

    11 pages, 9 figures, REVTeX 4.1, Submitted to Phys. Rev. D ; see paper for full list of authors ; The differential cross section and spin asymmetries for neutral pions produced within the intermediate pseudorapidity range 0.8 < {\eta} < 2.0 in polarized proton-proton collisions at sqrt{s} = 200 GeV are presented. Neutral pions were detected using the endcap electromagnetic calorimeter in the STAR detector at RHIC. The cross section was measured over a transverse momentum range of 5 < p_T < 16 GeV/c and is found to be within the scale uncertainty of a next-to-leading order perturbative QCD calculation. The longitudinal double-spin asymmetry, A_LL, is measured in the same pseudorapidity range. This quantity is sensitive to the gluonic contribution to the proton spin, {\Delta}g(x), at low Bjorken-x (down to x approx 0.01), where it is less constrained by measurements at central pseudorapidity. The measured A_LL is consistent with model predictions. The parity-violating asymmetry, A_L, is also measured and found to be consistent with zero. The transverse single-spin asymmetry, A_N, is measured within a previously unexplored kinematic range in Feynman-x and p_T. Such measurements may aid our understanding of the on-set and kinematic dependence of the large asymmetries observed at more forward pseudorapidity ({\eta} approx 3) and their underlying mechanisms. The A_N results presented are consistent with a twist-3 model prediction of a small asymmetry within the present kinematic range.

     
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    Übergeordneter Titel: ISSN: 1550-7998 ; EISSN: 1550-2368 ; Physical Review D ; http://hal.in2p3.fr/in2p3-00860077 ; Physical Review D, American Physical Society, 2014, 89, pp.012001. &#x27E8;10.1103/PhysRevD.89.012001&#x27E9;
    Schlagworte: [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]; [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
  5. Centrality, rapidity and transverse momentum dependence of J/Psi suppression in Pb-Pb collisions at sqrt(sNN)=2.76TeV
    Autor*in: Abelev, B.; Aphecetche, Laurent; Baek, y.W.; Bastid, N.; Batigne, Guillaume; Bergognon, A.A.E.; Bregant, M.; Cheshkov, C.; Cheynis, B.; Crochet, P.; Delagrange, H.; Ducroux, L.; Dupieux, P.; Erazmus, B.; Germain, Marie; Grossiord, J.-y.; Guilbaud, Maxime; Hippolyte, B.; Ianigro, J.-C.; Kuhn, C.; Lardeux, A.; Li, S.; Lopez, X.; Manso, F.; Marchisone, M.; Mart'Nez Garcia, G.; Martin Blanco, J.; Mas, A.; Morreale, A.; Pillot, Philippe; Porteboeuf-Houssais, S.; Ronflette, L.; Rosnet, P.; Roy, C.; Sanchez Castro, X.; Schutz, y.; Shabetai, Alexandre; Stocco, Diego; Tieulent, R.; Uras, A.; Valencia Palomo, L.; Vernet, R.; Vulpescu, B.; Wang, M.; Zhang, X.; Zoccarato, y.; Arbor, N.; Conesa Balbastre, G.; Faivre, J.; Furget, C.
    Erschienen: 2014
    Verlag:  HAL CCSD ; Elsevier

    20 pages, 5 captioned figures, 2 tables, authors from page 15 to page 17 ; see paper for full list of authors ; The inclusive J/Psi nuclear modification factor Raa in Pb-Pb collisions at sqrt(sNN)=2.76TeV has been measured by ALICE as a function of... mehr

     

    20 pages, 5 captioned figures, 2 tables, authors from page 15 to page 17 ; see paper for full list of authors ; The inclusive J/Psi nuclear modification factor Raa in Pb-Pb collisions at sqrt(sNN)=2.76TeV has been measured by ALICE as a function of centrality in the e+e- decay channel at mid-rapidity |y| < 0.8 and as a function of centrality, transverse momentum and rapidity in the u+u- decay channel at forward-rapidity 2.5 < y < 4.The J/Psi yields measured in Pb-Pb are suppressed compared to those in pp collisions scaled by the number of binary collisions.The Raa integrated over a centrality range corresponding to 90% of the inelastic Pb-Pb cross section is 0.72 +- 0.06 (stat.) +- 0.10 (syst.) at mid-rapidity and 0.57 +- 0.01 (stat.) +- 0.09 (syst.) at forward-rapidity.At low transverse momentum, significantly larger values of Raa are measured at forward-rapidity compared to measurements at lower energy.These features suggest that a contribution to the J/Psi yield originates from charm quarks (re)combination in the deconfined partonic medium.

     
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    Übergeordneter Titel: ISSN: 0370-2693 ; Physics Letters B ; http://hal.in2p3.fr/in2p3-00879452 ; Physics Letters B, Elsevier, 2014, 734, pp.314-327. &#x27E8;10.1016/j.physletb.2014.05.064&#x27E9;
    Schlagworte: [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]; [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
  6. System-size dependence of open-heavy-flavor production in nucleus-nucleus collisions at $\sqrt{s_{_{NN}}}$=200 GeV
    Autor*in: Adare, A.; Aphecetche, Laurent; Atomssa, E. T.; Delagrange, H.; Drapier, O.; Fleuret, F.; Gadrat, S.; Gonin, M.; de Cassagnac, R. Granier; Henni, A. Hadj; Rakotozafindrabe, A.; Roche, G.; Romana, A.; Rosnet, P.; Tram, V-N.; Comets, M. P.; Jouan, D.; Suire, C.
    Erschienen: 2014
    Verlag:  HAL CCSD ; American Physical Society

    380 authors, 13 pages, 12 figures, 2 tables. Submitted to Phys. Rev. C. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html,... mehr

     

    380 authors, 13 pages, 12 figures, 2 tables. Submitted to Phys. Rev. C. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at www.phenix.bnl.gov/papers.html, see paper for full list of authors ; The PHENIX Collaboration at the Relativistic Heavy Ion Collider has measured open heavy flavor production in Cu$+$Cu collisions at $\sqrt{s_{_{NN}}}$=200 GeV through the measurement of electrons at midrapidity that originate from semileptonic decays of charm and bottom hadrons. In peripheral Cu$+$Cu collisions an enhanced production of electrons is observed relative to $p$$+$$p$ collisions scaled by the number of binary collisions. In the transverse momentum range from 1 to 5 GeV/$c$ the nuclear modification factor is $R_{AA}$$\sim$1.4. As the system size increases to more central Cu$+$Cu collisions, the enhancement gradually disappears and turns into a suppression. For $p_T>3$ GeV/$c$, the suppression reaches $R_{AA}$$\sim$0.8 in the most central collisions. The $p_T$ and centrality dependence of $R_{AA}$ in Cu$+$Cu collisions agree quantitatively with $R_{AA}$ in $d+$Au and Au$+$Au collisions, if compared at similar number of participating nucleons $\langle N_{\rm part} \rangle$.

     
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    Übergeordneter Titel: ISSN: 2469-9985 ; EISSN: 2469-9993 ; Physical Review C ; http://hal.in2p3.fr/in2p3-00879551 ; Physical Review C, American Physical Society, 2014, 90, pp.034903. &#x27E8;10.1103/PhysRevC.90.034903&#x27E9;
    Schlagworte: [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
  7. Analysing radial flow features in p-Pb and p-p collisions at several TeV by studying identified particle production in EPOS3
    Autor*in: Werner, Klaus; Guiot, B.; Karpenko, Iu.; Pierog, T.
    Erschienen: 2014
    Verlag:  HAL CCSD ; American Physical Society

    International audience ; Experimental transverse momentum spectra of identified particles in p-Pb collisions at 5.02 TeV show many similarities to the corresponding Pb-Pb results, the latter ones usually being interpreted in term of hydrodynamic... mehr

     

    International audience ; Experimental transverse momentum spectra of identified particles in p-Pb collisions at 5.02 TeV show many similarities to the corresponding Pb-Pb results, the latter ones usually being interpreted in term of hydrodynamic flow. We analyse these data using EPOS3, an event generator based on a 3D+1 viscous hydrodynamical evolution starting from flux tube initial conditions, which are generated in the Gribov-Regge multiple scattering framework. An individual scattering is referred to as Pomeron, identified with a parton ladder, eventually showing up as flux tubes (or strings). Each parton ladder is composed of a pQCD hard process, plus initial and final state linear parton emission. Nonlinear effects are considered by using saturation scales $Q_{s}$, depending on the energy and the number of participants connected to the Pomeron in question. We compute transverse momentum ($p_{t}$) spectra of pions, kaons, protons, lambdas, and $\Xi$ baryons in p-Pb and p-p scattering, compared to experimental data and many other models. In this way we show in a quantitative fashion that p-Pb data (and even p-p ones) show the typical ''flow effect'' of enhanced particle production at intermediate $p_{t}$ values, more and more visible with increasing hadron mass.

     
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    Übergeordneter Titel: ISSN: 2469-9985 ; EISSN: 2469-9993 ; Physical Review C ; http://hal.in2p3.fr/in2p3-00914184 ; Physical Review C, American Physical Society, 2014, 89 (6), pp.064903. &#x27E8;10.1103/PhysRevC.89.064903&#x27E9;
    Schlagworte: [PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE]; [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE]; [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph]; [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th]
  8. Collisional processes of on-shell and off-shell heavy quarks in vacuum and in the Quark-Gluon-Plasma
    Autor*in: Berrehrah, H.; Bratkovskaya, E.; Cassing, W.; Gossiaux, Pol-Bernard; Aichelin, Joerg; Bleicher, M.
    Erschienen: 2014
    Verlag:  HAL CCSD ; American Physical Society

    28 pages, 32 figures ; We study the heavy quark scattering on partons of the quark gluon plasma (QGP) being especially interested in the collisional (elastic) scattering processes of heavy quarks on quarks and gluons. We calculate the different cross... mehr

     

    28 pages, 32 figures ; We study the heavy quark scattering on partons of the quark gluon plasma (QGP) being especially interested in the collisional (elastic) scattering processes of heavy quarks on quarks and gluons. We calculate the different cross sections for perturbative partons (massless on-shell particles in the vacuum) and for dynamical quasi-particles (off-shell particles in the QGP medium as described by the dynamical quasi-particles model "DQPM") using the leading order Born diagrams. Our results show clearly the effect of a finite parton mass and width on the perturbative elastic $(q(g) Q \rightarrow q (g) Q)$ cross sections which depend on temperature $T$, energy density $\epsilon$, the invariant energy $\sqrt{s}$ and the scattering angle $\theta$. Our detailed comparisons demonstrate that the finite width of the quasi-particles in the DQPM - which encodes the multiple partonic scattering - has little influence on the cross section for $q Q \rightarrow q Q$ as well as $g Q \rightarrow g Q$ scattering except close to thresholds. Thus when studying the dynamics of energetic heavy quarks in a QGP medium the spectral width of the degrees-of-freedom may be discarded. We have, furthermore, compared the cross sections from the DQPM with corresponding results from hard-thermal-loop (HTL) approaches. The HTL inspired models - essentially fixing the regulators by elementary vacuum cross sections and decay amplitudes instead of properties of the QGP at finite temperature - provide quite different results especially w.r.t. the temperature dependence of the $qQ$ and $gQ$ cross sections (in all settings). Accordingly, the transport properties of heavy quarks will be very different as a function of temperature when compared to DQPM results.

     
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    Übergeordneter Titel: ISSN: 2469-9985 ; EISSN: 2469-9993 ; Physical Review C ; http://hal.in2p3.fr/in2p3-00915702 ; Physical Review C, American Physical Society, 2014, 89, pp.054901. &#x27E8;10.1103/PhysRevC.89.054901&#x27E9;
    Schlagworte: [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph]; [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th]
  9. Measurement of transverse-single-spin asymmetries for midrapidity and forward-rapidity production of hadrons in polarized p+p collisions at $\sqrt{s}=$200 and 62.4 GeV
    Autor*in: Adare, A.; Afanasiev, S.; Aidala, C.; Ajitanand, N. N.; Akiba, Y.; Al-Bataineh, H.; Alexander, J.; Angerami, A.; Aoki, K.; Apadula, N.; Aphecetche, Laurent; Aramaki, Y.; Asai, J.; Atomssa, E. T.; Averbeck, R.; Awes, T. C.; Azmoun, B.; Babintsev, V.; Bai, M.; Baksay, G.; Baksay, L.; Baldisseri, A.; Barish, K. N.; Barnes, P. D.; Bassalleck, B.; Basye, A. T.; Bathe, S.; Batsouli, S.; Baublis, V.; Baumann, Cédric; Bazilevsky, A.; Belikov, S.; Belmont, R.; Bennett, R.; Berdnikov, A.; Berdnikov, Y.; Bhom, J. H.; Bickley, A. A.; Blau, D. S.; Boissevain, J. G.; Bok, J. S.; Borel, H.; Boyle, K.; Brooks, M. L.; Buesching, H.; Bumazhnov, V.; Bunce, G.; Butsyk, S.; Muñoz Camacho, C.; Campbell, S.
    Erschienen: 2014
    Verlag:  HAL CCSD ; American Physical Society

    451 authors, 16 pages, 11 figures, and 10 tables. Submitted to Phys. Rev. D. Plain text data tables for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html ; Measurements of... mehr

     

    451 authors, 16 pages, 11 figures, and 10 tables. Submitted to Phys. Rev. D. Plain text data tables for this and previous PHENIX publications are (or will be) publicly available at www.phenix.bnl.gov/papers.html ; Measurements of transverse-single-spin asymmetries ($A_{N}$) in $p$$+$$p$ collisions at $\sqrt{s}=$62.4 and 200 GeV with the PHENIX detector at RHIC are presented. At midrapidity, $A_{N}$ is measured for neutral pion and eta mesons reconstructed from diphoton decay, and at forward rapidities, neutral pions are measured using both diphotons and electromagnetic clusters. The neutral-pion measurement of $A_{N}$ at midrapidity is consistent with zero with uncertainties a factor of 20 smaller than previous publications, which will lead to improved constraints on the gluon Sivers function. At higher rapidities, where the valence quark distributions are probed, the data exhibit sizable asymmetries. In comparison with previous measurements in this kinematic region, the new data extend the kinematic coverage in $\sqrt{s}$ and $p_T$, and it is found that the asymmetries depend only weakly on $\sqrt{s}$. The origin of the forward $A_{N}$ is presently not understood quantitatively. The extended reach to higher $p_T$ probes the transition between transverse momentum dependent effects at low $p_T$ and multi-parton dynamics at high $p_T$.

     
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    Übergeordneter Titel: ISSN: 1550-7998 ; EISSN: 1550-2368 ; Physical Review D ; https://hal.in2p3.fr/in2p3-00919330 ; Physical Review D, American Physical Society, 2014, 90, pp.012006. &#x27E8;10.1103/PhysRevD.90.012006&#x27E9;
    Schlagworte: [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]; [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
  10. Transverse-energy distributions at midrapidity in $p$$+$$p$, $d$$+$Au, and Au$+$Au collisions at $\sqrt{s_{_{NN}}}=62.4$--200~GeV and implications for particle-production models
    Autor*in: Adler, S. S.; Afanasiev, S.; Aidala, C.; Ajitanand, N. N.; Akiba, Y.; Al-Jamel, A.; Alexander, J.; Aoki, K.; Aphecetche, Laurent; Armendariz, R.; Aronson, S. H.; Averbeck, R.; Awes, T. C.; Azmoun, B.; Babintsev, V.; Baldisseri, A.; Barish, K. N.; Barnes, P. D.; Bassalleck, B.; Bathe, S.; Batsouli, S.; Baublis, V.; Bauer, F.; Bazilevsky, A.; Belikov, S.; Bennett, R.; Berdnikov, Y.; Bjorndal, M. T.; Boissevain, J. G.; Borel, H.; Boyle, K.; Brooks, M. L.; Brown, D. S.; Bruner, N.; Bucher, D.; Buesching, H.; Bumazhnov, V.; Bunce, G.; Burward-Hoy, J. M.; Butsyk, S.; Camard, X.; Campbell, S.; Chai, J. -S.; Chand, P.; Chang, W. C.; Chernichenko, S.; Chi, C. Y.; Chiba, J.; Chiu, M.; Choi, I. J.
    Erschienen: 2014
    Verlag:  HAL CCSD ; American Physical Society

    391 authors, 24 pages, 19 figures, and 15 Tables. Submitted to Phys. Rev. C. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are publicly available at http://www.phenix.bnl.gov/papers.html ;... mehr

     

    391 authors, 24 pages, 19 figures, and 15 Tables. Submitted to Phys. Rev. C. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are publicly available at www.phenix.bnl.gov/papers.html ; Measurements of the midrapidity transverse energy distribution, $d\Et/d\eta$, are presented for $p$$+$$p$, $d$$+$Au, and Au$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV and additionally for Au$+$Au collisions at $\sqrt{s_{_{NN}}}=62.4$ and 130 GeV. The $d\Et/d\eta$ distributions are first compared with the number of nucleon participants $N_{\rm part}$, number of binary collisions $N_{\rm coll}$, and number of constituent-quark participants $N_{qp}$ calculated from a Glauber model based on the nuclear geometry. For Au$+$Au, $\mean{d\Et/d\eta}/N_{\rm part}$ increases with $N_{\rm part}$, while $\mean{d\Et/d\eta}/N_{qp}$ is approximately constant for all three energies. This indicates that the two component ansatz, $dE_{T}/d\eta \propto (1-x) N_{\rm part}/2 + x N_{\rm coll}$, which has been used to represent $E_T$ distributions, is simply a proxy for $N_{qp}$, and that the $N_{\rm coll}$ term does not represent a hard-scattering component in $E_T$ distributions. The $dE_{T}/d\eta$ distributions of Au$+$Au and $d$$+$Au are then calculated from the measured $p$$+$$p$ $E_T$ distribution using two models that both reproduce the Au$+$Au data. However, while the number-of-constituent-quark-participant model agrees well with the $d$$+$Au data, the additive-quark model does not.

     
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    Übergeordneter Titel: ISSN: 2469-9985 ; EISSN: 2469-9993 ; Physical Review C ; https://hal.in2p3.fr/in2p3-00926179 ; Physical Review C, American Physical Society, 2014, 89, pp.044905. &#x27E8;10.1103/PhysRevC.89.044905&#x27E9;
    Schlagworte: [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
  11. Open bottom states and the anti-B meson propagation in hadronic matter
    Autor*in: Torres-Rincon, Juan M.; Tolos, Laura; Romanets, Olena
    Erschienen: 2014
    Verlag:  HAL CCSD ; American Physical Society

    13 pages, 5 figures ; The interaction and propagation of anti-B mesons with light mesons, N and Delta baryons is studied within a unitarized approach based on effective models that are compatible with chiral and heavy-quark symmetries. We find... mehr

     

    13 pages, 5 figures ; The interaction and propagation of anti-B mesons with light mesons, N and Delta baryons is studied within a unitarized approach based on effective models that are compatible with chiral and heavy-quark symmetries. We find several heavy-quark spin doublets in the open-bottom sectors, where anti-B and anti-B* mesons are present. In the meson sector we find several resonant states, among them, a B0 and a B1 with masses 5530 MeV and 5579 MeV as well as Bs0* and Bs1* narrow states at 5748 MeV and 5799 MeV, respectively. They form two doublets with no experimental identification yet, the first one being the bottom counterpart of the D0(2400) and D1(2430) states, and the second bottom doublet associated to the ubiquitous Ds0* (2317) and the Ds1 (2460). In the baryon sector, several Lambda_b and Sigma_b doublets are identified, among them the one given by the experimental Lambda_b(5910) and Lambda*_b(5921). Moreover, one of our states, the Sigma_b*(5904), turns out to be the bottom counterpart of the Sigma*(1670) and Sigma_c*(2549), which is a case for discovery. We finally analyze different transport coefficients for the anti-B meson in hot matter, such as formed in heavy-ion collisions at RHIC and LHC. For RHIC/LHC energies, the main contribution to the coefficients comes from the interaction of anti-B mesons with pions. However, we also include the effects of baryonic density which might be sizable at temperatures T < 100 MeV, as the chemical potential is expected to increase in the last stages of the expansion. We conclude that although the relaxation time decreases with larger baryonic densities, the anti-B meson does not thermalize at RHIC/LHC energies, representing an ideal probe for the initial bottom distribution.

     
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    Übergeordneter Titel: ISSN: 1550-7998 ; EISSN: 1550-2368 ; Physical Review D ; http://hal.in2p3.fr/in2p3-00958657 ; Physical Review D, American Physical Society, 2014, 89 (7), pp.074042. &#x27E8;10.1103/PhysRevD.89.074042&#x27E9;
    Schlagworte: [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph]; [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th]
  12. Measurement of quarkonium production at forward rapidity in pp collisions at sqrt{s}= 7 TeV
    Autor*in: Abelev, B.; Aphecetche, Laurent; Batigne, Guillaume; Cheshkov, C.; Cheynis, B.; Delagrange, H.; Ducroux, L.; Erazmus, B.; Estienne, Magali; Germain, Marie; Grossiord, J.-y.; Guilbaud, Maxime; Hippolyte, B.; Kuhn, C.; Lardeux, A.; Martinez Garcia, Gines; Mas, A.; Massacrier, L.; Morreale, A.; Pillot, Philippe; Ronflette, L.; Roy, C.; Sanchez Castro, X.; Schutz, y.; Shabetai, Alexandre; Stocco, Diego; Tieulent, R.; Uras, A.; Vernet, R.; Wang, M.; Zhu, J.; Zoccarato, y.; Arbor, N.; Conesa Balbastre, G.; Faivre, J.; Furget, C.; Guernane, R.; Kox, S.; Real, J.S.; Silvestre, C.; Baek, y.W.; Barret, V.; Bastid, N.; Crochet, P.; Dupieux, P.; Li, S.; Lopez, X.; Manso, F.; Marchisone, M.; Porteboeuf-Houssais, S.
    Erschienen: 2014
    Verlag:  HAL CCSD ; Springer Verlag (Germany)

    27 pages, 9 captioned figures, 6 tables, authors from page 22 to page 24 ; see paper for full list of authors ; The inclusive production cross sections at forward rapidity of J/psi, psi(2S), Upsilon(1S) and Upsilon(2S) are measured in pp collisions... mehr

     

    27 pages, 9 captioned figures, 6 tables, authors from page 22 to page 24 ; see paper for full list of authors ; The inclusive production cross sections at forward rapidity of J/psi, psi(2S), Upsilon(1S) and Upsilon(2S) are measured in pp collisions at sqrt{s} = 7 TeV with the ALICE detector at the LHC. The analysis is based in a data sample corresponding to an integrated luminosity of 1.35 pb^-1. Quarkonia are reconstructed in the dimuon-decay channel and the signal yields are evaluated by fitting the mu+mu- invariant mass distributions. The differential production cross sections are measured as a function of the transverse momentum pt and rapidity y, over the ranges 0 < pt < 20 GeV/c for J/psi, 0 < pt < 12 GeV/c for all other resonances and for 2.5 < y < 4. The measured cross sections integrated over pt and y, and assuming unpolarized quarkonia, are: sigma_{J/psi} = 6.69 +- 0.04 +- 0.63 microbarn, sigma_{psiprime} = 1.13 +- 0.07 +- 0.14 microbarn, sigma_{Upsilon(1S)} = 54.2 +- 5.0 +- 6.7 nb and sigma_{Upsilon(2S)} = 18.4 +- 3.7 +- 2.2 nb, where the first uncertainty is statistical and the second one is systematic. The results are compared to measurements performed by other LHC experiments and to theoretical models.

     
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    Übergeordneter Titel: ISSN: 1434-6044 ; EISSN: 1434-6052 ; European Physical Journal C: Particles and Fields ; http://hal.in2p3.fr/in2p3-00959806 ; European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 2014, 74, pp.2974. &#x27E8;10.1140/epjc/s10052-014-2974-4&#x27E9;
    Schlagworte: [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]; [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
  13. Unusual structure, bonding and properties in a californium borate
    Autor*in: Polinski, Matthew J.; Garner, Edward B.; Maurice, Rémi; Planas, Nora; Stritzinger, Jared T.; Parker, T. Gannon; Cross, Justin N.; Green, Thomas D.; Alekseev, Evgeny V.; van Cleve, Shelley M.; Depmeier, Wulf; Gagliardi, Laura; Shatruk, Michael; Knappenberger, Kenneth L.; Liu, Guokui; Skanthakumar, S.; Soderholm, Lynda; Dixon, David A.; Albrecht-Schmitt, Thomas E.
    Erschienen: 2014
    Verlag:  HAL CCSD ; Nature Publishing Group

    The participation of the valence orbitals of actinides in bonding has been debated for decades. Recent experimental and computational investigations demonstrated the involvement of 6p, 6d and/or 5f orbitals in bonding. However, structural and... mehr

     

    The participation of the valence orbitals of actinides in bonding has been debated for decades. Recent experimental and computational investigations demonstrated the involvement of 6p, 6d and/or 5f orbitals in bonding. However, structural and spectroscopic data, as well as theory, indicate a decrease in covalency across the actinide series, and the evidence points to highly ionic, lanthanide-like bonding for late actinides. Here we show that chemical differentiation between californium and lanthanides can be achieved by using ligands that are both highly polarizable and substantially rearrange on complexation. A ligand that suits both of these desired properties is polyborate. We demonstrate that the 5f, 6d and 7p orbitals are all involved in bonding in a Cf(III) borate, and that large crystal-field effects are present. Synthetic, structural and spectroscopic data are complemented by quantum mechanical calculations to support these observations.

     
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    Übergeordneter Titel: ISSN: 1755-4330 ; Nature Chemistry ; https://hal.in2p3.fr/in2p3-00966875 ; Nature Chemistry, 2014, 6, pp.387-392. &#x27E8;10.1038/nchem.1896&#x27E9;
    Schlagworte: [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry
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    info:eu-repo/semantics/OpenAccess
  14. Interplay between Local Anisotropies in Binuclear Complexes
    Autor*in: Ruamps, Renaud; Maurice, Rémi; de Graaf, Coen; Guihéry, Nathalie
    Erschienen: 2014
    Verlag:  HAL CCSD ; American Chemical Society

    A systematic study has been undertaken to determine how local distortions affect the overall (molecular) magnetic anisotropies in binuclear complexes. For this purpose we have applied a series of distortions to two binuclear Ni(II) model complexes... mehr

     

    A systematic study has been undertaken to determine how local distortions affect the overall (molecular) magnetic anisotropies in binuclear complexes. For this purpose we have applied a series of distortions to two binuclear Ni(II) model complexes and extracted the magnetic anisotropy parameters of multispin and giant-spin model Hamiltonians. Furthermore, local and molecular magnetic axes frames have been determined. It is shown that certain combinations of local distortions can lead to constructive interference of the local anisotropies and that the largest contribution to the anisotropic exchange does not arise from the second-rank tensor normally included in the multispin Hamiltonian, but rather from a fourth-rank tensor. From the comparison of the extracted parameters, simple rules are obtained to maximize the molecular anisotropy by controlling the local magnetic anisotropy, which opens the way to tune the anisotropy in binuclear or polynuclear complexes.

     
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    Übergeordneter Titel: ISSN: 0020-1669 ; EISSN: 1520-510X ; Inorganic Chemistry ; https://hal.in2p3.fr/in2p3-00983068 ; Inorganic Chemistry, 2014, 53, pp.4508-4516. &#x27E8;10.1021/ic500180k&#x27E9;
    Schlagworte: [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry
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    info:eu-repo/semantics/OpenAccess
  15. Per Libano Zanolari
    Autor*in: Bellinelli, Eros
    Erschienen: 2014
    Verlag:  Tipografia Menghini SA

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    Übergeordneter Titel: Quaderni grigionitaliani ; 1168813-0 ; 1016-748X ; 83 ; 2014 ; 3 ; 81
    DDC Klassifikation: Bräuche, Etikette, Folklore (390); Sprache (400); Literatur und Rhetorik (800); Geschichte und Geografie (900)
  16. Ancora di notai imperiali e conti palatini
    Autor*in: Santi, Cesare
    Erschienen: 1985
    Verlag:  Pro Grigioni Italiano

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    Übergeordneter Titel: Quaderni grigionitaliani ; 1168813-0 ; 1016-748X ; 54 ; 1985 ; 4 ; 353
    DDC Klassifikation: Bräuche, Etikette, Folklore (390); Sprache (400); Literatur und Rhetorik (800); Geschichte und Geografie (900)
  17. <<A>> connection not made
    the Chapel Point Historic Site Project
    Autor*in: Tennyson, Brian Douglas
    Erschienen: 2003
    Verlag:  The Association for Living History, Farm and Agricultural Museums, North Bloomfield, Ohio

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    Übergeordneter Titel: Enthalten in: Proceedings of the ... Conference and Annual Meeting / ALHFAM - The Association for Living History, Farm and Agricultural Museums; North Bloomfield, Ohio, 2003; 25.2003: Seite 89-93
    Schlagworte: Array
  18. Die älteste karolingische Minuskel
    Autor*in: Licht, Tino
    Erschienen: 2014
    Verlag:  Heidelberg University Library

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    DDC Klassifikation: Italische Literaturen; Lateinische Literatur (870); Geschichte Europas (940)
  19. Wilhelm Wolffschild
    Autor*in: Windelband, Wilhelm
    Erschienen: 2014
    Verlag:  Heidelberg University Library

  20. Gedichte von H. G. Meyer
    Autor*in: Windelband, Wilhelm
    Erschienen: 2014
    Verlag:  Heidelberg University Library

  21. Georg Eckardt, Matthias John, Temilo van Zantwijk, Paul Ziehe: Anthropologie und empirische Psychologie um 1800. Ansätze einer Entwicklung zur Wissenschaft
    Autor*in: Borgards, Roland
    Erschienen: 2003
    Verlag:  Humboldt-Universität zu Berlin

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    Sprache: Deutsch
    Medientyp: Aufsatz aus einer Zeitschrift
    Format: Online
    DDC Klassifikation: Literatur und Rhetorik (800)
    Schlagworte: Rhetorik; Literaturwissenschaft
  22. Persönlichkeit und Selbstbildung. Niethammers Beitrag zu Schellings Überwindung der Transzendentalphilosophie
    Autor*in: Shibuya, Rie
    Erschienen: 2003
    Verlag:  Humboldt-Universität zu Berlin

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    DDC Klassifikation: Literatur und Rhetorik (800)
    Schlagworte: Rhetorik; Literaturwissenschaft
  23. Adelbert von Chamisso ‒ Leben und Werk im Bild. Ein Kommentar zu Radierungen von Bernd Lehmann
    Autor*in: Hildebrandt, Alexandra
    Erschienen: 2003
    Verlag:  Humboldt-Universität zu Berlin

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    DDC Klassifikation: Literatur und Rhetorik (800)
    Schlagworte: Rhetorik; Literaturwissenschaft
  24. Jürgen Daiber: Experimentalphysik des Geistes. Novalis und das romantische Experiment
    Autor*in: Albes, Claudia
    Erschienen: 2003
    Verlag:  Humboldt-Universität zu Berlin

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    DDC Klassifikation: Literatur und Rhetorik (800)
    Schlagworte: Rhetorik; Literaturwissenschaft
  25. Dialektik der Romantik
    Autor*in: Hörisch, Jochen
    Erschienen: 2003
    Verlag:  Humboldt-Universität zu Berlin

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    DDC Klassifikation: Literatur und Rhetorik (800)
    Schlagworte: Rhetorik; Literaturwissenschaft