J/psi production cross section and its dependence on charged-particle multiplicity in p plus p collisions at root s=200 GeV

0499094 - ÚJF 2019 RIV NL eng J - Článek v odborném periodiku
Adam, J. - Adamczyk, L. - Adams, J. R. - Adkins, J. K. - Agakishiev, G. - Bielčík, J. - Bielčíková, Jana - Chaloupka, P. - Federič, Pavol - Federičová, P. - Harlenderová, A. - Holub, L. - Kramárik, L. - Kvapil, J. - Lidrych, J. - Matonoha, O. - Rusňák, Jan - Rusňáková, O. - Šimko, Miroslav - Šumbera, Michal - Vaněk, Jan … celkem 349 autorů
J/psi production cross section and its dependence on charged-particle multiplicity in p plus p collisions at root s=200 GeV.
Physics Letters. B. Roč. 786, č. 11 (2018), s. 87-93. ISSN 0370-2693. E-ISSN 1873-2445
Grant CEP: GA MŠMT EF16_013/0001569
Institucionální podpora: RVO:61389005
Klíčová slova: quarkonium * p plus p collisions * multipe parton interactions * charged-particle multiplicity
Obor OECD: Particles and field physics
Impakt faktor: 4.162, rok: 2018

We present a measurement of inclusive J/psi production at mid-rapidity (vertical bar y vertical bar < 1) in p+p collisions at a center-of-mass energy of root s = 200 GeV with the STAR experiment at the Relativistic Heavy Ion Collider (RHIC). The differential production cross section for J/psi as a function of transverse momentum (p(T)) for 0 < p(T) < 14 GeV/c and the total cross section are reported and compared to calculations from the color evaporation model and the non-relativistic Quantum Chromodynamics model. The dependence of J/psi relative yields in three p(T) intervals on charged-particle multiplicity at mid-rapidity is measured for the first time in p+p collisions at root s = 200 GeV and compared with that measured at root s = 7 TeV, PYTHIA8 and EPOS3 Monte Carlo generators, and the Percolation model prediction.
Trvalý link: http://hdl.handle.net/11104/0291372