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Any color singlet or octet ccbar pair is created at short distances and then expands to a full size of J/psi. Such a dynamical evolution process is included here in calculations for the J/psi number distribution as a function of transverse…

High Energy Physics - Phenomenology · Physics 2008-11-26 Xiao-Ming xu

Interpreting the J/psi suppression reported in nucleus--nucleus collisions at SPS and RHIC requires the quantitative understanding of cold nuclear matter effects, such as the inelastic rescattering of J/psi states in nuclei or the nuclear…

High Energy Physics - Phenomenology · Physics 2009-07-10 Vi-Nham Tram , Francois Arleo

Before wondering about the quark-gluon plasma (QGP), one has to take into account various cold (normal) nuclear matter effects, that can be probed through p+A like collisions. This article aims at reviewing the current results (and…

High Energy Physics - Phenomenology · Physics 2010-01-15 R. Granier de Cassagnac

We discuss production of $J/\psi$ and $e^+ e^-$ pairs in semicentral and peripheral collisions of heavy ions at high energies. We focus on photoproduction mechanism. We present explanation of results of the ALICE collaboration for low…

Nuclear Theory · Physics 2019-10-15 Antoni Szczurek

In this article we investigate the influence of nuclear effects in the production of gluinos in nuclear collisions at the LHC, and estimate the transverse momentum dependence of the nuclear ratios $R_{pA} = {\frac{d\sigma (pA)}{dy d^2 p_T}}…

High Energy Physics - Phenomenology · Physics 2011-07-08 C. Brenner Mariotto , D. B. Espindola , M. C. Rodriguez

Charmonium states are expected to be considerably suppressed in the case of quark-gluon plasma formation in high-energy heavy-ion collisions. However, a robust identification of suppression patterns as signatures of a deconfined QCD medium…

High Energy Physics - Phenomenology · Physics 2009-04-29 Carlos Lourenco , Ramona Vogt , Hermine K. Woehri

The NA60 experiment has studied J/psi production in p-A collisions at 158 and 400 GeV, at the CERN SPS. Nuclear effects on the J/psi yield have been estimated from the A-dependence of the production cross section ratios…

We study the J/Psi production from nuclei near the kinematic threshold within the collision model, based on the nuclear spectral function, for incoherent primary proton-nucleon charmonium creation processes. The model takes into account the…

Nuclear Theory · Physics 2015-06-22 Yu. T. Kiselev , E. Ya. Paryev , Yu. M. Zaitsev

This work studies the thermal production of $J/\psi$ and $\psi(2S)$ with Boltzmann transport model in the Quark Gluon Plasma (QGP) produced in $\sqrt{s_{NN}}=5.02$ TeV Pb-Pb collisions. $J/\psi$ nuclear modification factors are studied in…

Nuclear Theory · Physics 2019-10-21 Baoyi Chen

The yield of $J/\psi$ mesons, produced in proton-nucleus ($p+A$) and nucleus-nucleus ($A+A$) collisions are estimated within a Glauber model ansatz for the upcoming low energy heavy-ion collision experiments at SPS and FAIR. A data driven…

High Energy Physics - Phenomenology · Physics 2022-10-21 S. Chatterjee , P. P. Bhaduri , S. Chattopadhyay

In proton-nucleus and nucleus-nucleus collisions up to central $S-U$ interactions, the $P_T$-dependence of $J/\psi$ production is determined by initial state parton scattering and pre-resonance nuclear absorption (``normal" $J/\psi$…

High Energy Physics - Phenomenology · Physics 2009-10-30 D. Kharzeev , M. Nardi , H. Satz

The interpretation of the J/psi suppression patterns observed in nuclear collisions, at CERN and RHIC, as a signature of the formation of a deconfined phase of QCD matter, requires knowing which fractions of the measured J/psi yields, in pp…

High Energy Physics - Phenomenology · Physics 2011-03-23 P. Faccioli , C. Lourenco , J. Seixas , H. K. Woehri

The transverse momentum dependence of J/Psi suppression in relativistic heavy ion collisions is calculated from initial state gluon rescattering not only with nucleons but also with prompt gluons produced in nucleon-nucleon collisions in…

Nuclear Theory · Physics 2009-11-07 Pengfei Zhuang , Joerg Huefner

In this paper, dedicated to the memory of the late Prof. Jean Cleymans, the nuclear modification factors, $R_{xA}$, are investigated for pion production in small system collisions, measured by PHENIX experiment at RHIC (Relativistic Heavy…

High Energy Physics - Phenomenology · Physics 2022-07-19 L. S. Moriggi , M. V. T. Machado

$J/\psi$ and $\psi'$ production cross sections in fixed-target experiment is calculated, considering the contributions from both color-singlet and color-octet mechanisms.The results are applied to the investigations of the $J/\psi$…

High Energy Physics - Phenomenology · Physics 2007-05-23 Xiao-Fei Zhang , Cong-Feng Qiao , Xiao-Xia Yao , Wei-Qin Chao

The energy loss effects of the incident quark, gluon and the color octet $c\bar{c}$ on $J/\psi$ suppression in p-A collisions are studied by means of the experimental data at E866, RHIC and LHC energy. By the Salgado-Wiedemann (SW)…

High Energy Physics - Phenomenology · Physics 2018-12-05 Li-Hua Song , Lin-Wan Yan , Shang-Fei Xin

J/psi-pair production at the LHC is currently one of the few tools available to probe gluon transverse momentum distributions (TMDs). In this context, data from LHCb in the collider mode have the potential to probe the evolution of the…

High Energy Physics - Phenomenology · Physics 2024-03-04 Alice Colpani Serri , Jelle Bor , Daniel Boer , Jean-Philippe Lansberg

Nuclear modification factors for pion production in AuAu and CuCu collisions are analyzed at very high transverse momenta. At p_T > 10 GeV/c, the R_{AA}(p_T) is determined mostly by the initial state nuclear modifications (e.g. EMC effect)…

High Energy Physics - Phenomenology · Physics 2009-05-07 G. G. Barnafoldi , G. Fai , P. Levai , G. Papp , B. A. Cole

We propose the study of unpolarized transverse momentum dependent gluon parton distributions as well as the effect of linearly polarized gluons on transverse momentum and rapidity distributions of $J/\psi$ and $\Upsilon$ production within…

High Energy Physics - Phenomenology · Physics 2016-03-23 Asmita Mukherjee , Sangem Rajesh

In spite of the sweeping coherence effects in high energy hadron and nuclei collisions, $k_T$-factorization can be recovered for the inclusive gluon production in $pA$ collisions at the leading logarithmic order. In open charm production at…

High Energy Physics - Phenomenology · Physics 2015-05-20 Kirill Tuchin
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