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Charm photoproduction rates off nuclei below the nucleon threshold are estimated using the phenomenologically known structure functions both for $x<1$ and $x>1$. The rates rapidly fall from values of the order 1 nb at the threshold to…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. A. Braun , B. Vlahovic

We calculate differential cross sections for exclusive double diffractive (EDD) production of open charm in proton-proton and proton-antiproton collisions. Sizeable cross sections are found. The EDD contribution constitutes about 1 % of the…

High Energy Physics - Phenomenology · Physics 2010-04-30 Rafal Maciula , Roman Pasechnik , Antoni Szczurek

Recent results on the production of open charm in electron proton scattering at HERA are reviewed. Results on the fragmentation of charm are presented and compared to the measurements at e+e- colliders. Recent results on the charm…

High Energy Physics - Experiment · Physics 2019-08-14 Jeannine Wagner

We present a detailed phenomenological study of the prospects of open charm physics at the future $\bar{p}p$ and $pp$ facilities GSI-FAIR and J-PARC, respectively. In particular, we concentrate on differential cross sections and the charge…

High Energy Physics - Phenomenology · Physics 2008-11-26 J. Riedl , A. Schafer , M. Stratmann

Charm particle production in nucleus-nucleus collisions at the CERN SPS energies is considered within a statistical approach. Namely, the Statistical Model of the Early Stage is used to calculate mean multiplicity of charm particles in…

Nuclear Theory · Physics 2017-11-22 R. V. Poberezhnyuk , M. Gazdzicki , M. I. Gorenstein

Data on J/psi production in inelastic proton-proton, proton-nucleus and nucleus-nucleus interactions at 158 A GeV are analyzed and it is shown that the ratio of mean multiplicities of J/psi mesons and pions is the same for all these…

High Energy Physics - Phenomenology · Physics 2009-10-31 Marek Gazdzicki

Using the color evaporation model, the cross section for charmonium production in p+p collision is calculated in quark-gluon plasma. The threshold energy for open charms is given by the free energy potential from lattice calculations, the…

Nuclear Theory · Physics 2014-04-23 Taesoo Song

We consider the production of the J/psi mesons in heavy ion collisions at RHIC energies in the statistical coalescence model with an exact (canonical ensemble) charm conservation. The c\bar{c} quark pairs are assumed to be created in the…

High Energy Physics - Phenomenology · Physics 2009-11-07 M. I. Gorenstein , A. P. Kostyuk , H. Stoecker , W. Greiner

Measurements of open charm hadro-production from CERN and Fermilab experiments are reviewed, with particular emphasis on the absolute cross sections and on their A and sqrt(s) dependences. Differential pt and xf cross sections calculated…

Nuclear Experiment · Physics 2015-06-26 P. Braun-Munzinger , D. Miskowiec , A. Drees , C. Lourenco

Recent experimental measurements on open charm production in proton-proton, proton (deuteron)-nucleus and nucleus-nucleus collisions at RHIC are reviewed. A comparison with theoretical predictions is made. Some unsettled issues in open…

Nuclear Experiment · Physics 2009-11-11 Xin Dong

We discuss aspects of open and hidden charm production in hadron-nucleus collisions at RHIC and LHC energies. We first discuss the extraction of the total charm cross section in lower energy collisions and how it compares to next-to-leading…

High Energy Physics - Phenomenology · Physics 2009-11-10 R. Vogt

We investigate open charm meson production in fixed-target LHCb experiment at $\sqrt{s}=86.6$ GeV in $p+^4\!\mathrm{He}$ collisions. Theoretical calculations of charm cross section are done in the framework of the $k_{T}$-factorization…

High Energy Physics - Phenomenology · Physics 2020-07-22 Rafal Maciula

The statistical coalescence model for the production of open and hidden charm is considered within the canonical ensemble formulation. The data for the J/\psi multiplicity in Pb+Pb collisions at 158 A GeV are used for the model prediction…

High Energy Physics - Phenomenology · Physics 2009-10-31 M. I. Gorenstein , A. P. Kostyuk , H. Stoecker , W. Greiner

We examine the production of open charm in antiproton annihilation on finite nuclei. The enhancement of the subthreshold production cross section, even in a nucleus as light as carbon, should provide a clean signature of the reduction in…

Nuclear Theory · Physics 2010-02-17 A. Sibirtsev , K. Tsushima , A. W. Thomas

Effects of strong longitudinal color electric fields (SCF) on the open charm production in nucleus-nucleus (A + A) collisions at 200A GeV are investigated within the framework of the HIJING-BBbar v2.0 model. A three fold increase of the…

High Energy Physics - Phenomenology · Physics 2009-10-09 V. Topor Pop , J. Barrette , M. Gyulassy

Open charm production in gamma-gamma collisions is studied with data collected at e+e- centre-of-mass energies from 189 GeV to 202 GeV corresponding to a total integrated luminosity of 410 pb-1. The charm cross section sigma(gamma gamma…

High Energy Physics - Experiment · Physics 2012-08-27 L3 Collaboration

We present predictions for the inclusive production of charm jets in proton-proton collisions at 2.76 and 5.02 TeV. The charm-quark is considered massless. In this scheme we find that the ratio of the next-to-leading order to the leading…

High Energy Physics - Phenomenology · Physics 2020-10-28 Gustav Kramer

We calculate open charm production in $Pb+Pb$ reactions at SPS energies within the HSD transport approach - which is based on string, quark, diquark ($q, \bar{q}, qq, \bar{q}\bar{q}$) and hadronic degrees of freedom - including the…

High Energy Physics - Phenomenology · Physics 2009-11-07 W. Cassing , L. A. Kondratyuk , G. I. Lykasov , M. V. Rzjanin

A study of the $J/\psi$-meson production at large transverse momentum in high energy $\gamma p$ collisions via the charm quark excitation in a photon is presented. Based on perturbative QCD and the nonrelativistic quark model, our…

High Energy Physics - Phenomenology · Physics 2016-09-01 V. A. Saleev

Measurements are presented of differential cross sections for the production of Z bosons in association with at least one jet initiated by a charm quark in pp collisions at $\sqrt{s} =$ 13 TeV. The data recorded by the CMS experiment at the…

High Energy Physics - Experiment · Physics 2021-04-19 CMS Collaboration