Multiplicity dependence of inclusive J/psi production at midrapidity in pp collisions at root s=13 TeV

0536504 - ÚJF 2021 RIV NL eng J - Journal Article
Acharya, S. - Adamová, Dagmar - Bielčík, J. - Bielčíková, Jana - Broz, M. - Contreras, J. G. - Herman, T. - Horák, D. - Isakov, Artem - Křížek, Filip - Křížková Gajdošová, K. - Kushpil, Svetlana - Lavička, R. - Mareš, Jiří A. - Petráček, V. - Šafařík, K. - Šumbera, Michal - Závada, Petr … Total 1007 authors
Multiplicity dependence of inclusive J/psi production at midrapidity in pp collisions at root s=13 TeV.
Physics Letters. B. Roč. 810, NOV (2020), č. článku 135758. ISSN 0370-2693. E-ISSN 1873-2445
R&D Projects: GA MŠMT(CZ) LTT17018; GA MŠMT(CZ) LM2018104
Institutional support: RVO:68378271 ; RVO:61389005
Keywords : ALICE collaboration * heavy ions experiments
OECD category: Nuclear physics; Particles and field physics (FZU-D)
Impact factor: 4.771, year: 2020
Method of publishing: Open access
https://doi.org/10.1016/j.physletb.2020.135758

Measurements of the inclusive J/psi yield as a function of charged-particle pseudorapidity density dN(ch)/d eta in pp collisions at root s = 13 TeV with ALICE at the LHC are reported. The J/psi meson yield is measured at midrapidity (vertical bar y vertical bar < 0.9) in the dielectron channel, for events selected based on the charged-particle multiplicity at midrapidity (vertical bar eta vertical bar < 1) and at forward rapidity (-3.7 < eta < -1.7 and 2.8 < eta < 5.1), both observables are normalized to their corresponding averages in minimum bias events. The increase of the normalized J/psi yield with normalized dN(ch)/d eta is significantly stronger than linear and dependent on the transverse momentum. The data are compared to theoretical predictions, which describe the observed trends well, albeit not always quantitatively.
Permanent Link: http://hdl.handle.net/11104/0314280