Measurements of Quarkonium Polarization and Production versus Charged-Particle Multiplicity in p plus p Collisions at root s=500 GeV in the STAR Experiment

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F16%3A00307450" target="_blank" >RIV/68407700:21340/16:00307450 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.nuclphysa.2016.03.029" target="_blank" >http://dx.doi.org/10.1016/j.nuclphysa.2016.03.029</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.nuclphysa.2016.03.029" target="_blank" >10.1016/j.nuclphysa.2016.03.029</a>

Result language

angličtina

Original language name

Measurements of Quarkonium Polarization and Production versus Charged-Particle Multiplicity in p plus p Collisions at root s=500 GeV in the STAR Experiment

Original language description

We report on the J/psi production and polarization as a function of p(T) and x(T), measured via the dielectron decay channel at mid-rapidity in p+p collisions at root s = 500 GeV in the STAR experiment. The measured J/psi P-T spectrum is in agreement with NRQCD and CGC+NRQCD predictions, while the J/psi polarization shows a trend towards longitudinal polarization with increasing p(T). In addition, first measurements of the J/psi production as a function of charged-particle multiplicity are presented at root s = 500 GeV. A strong correlation between the J/psi yield and charged-particle multiplicity is observed with a hint of J/psi p(T) dependence.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BG - Nuclear, atomic and molecular physics, accelerators

OECD FORD branch

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Project

<a href="/en/project/EE2.3.30.0034" target="_blank" >EE2.3.30.0034: Support of inter-sectoral mobility and quality enhancement of research teams at Czech Technical University in Prague</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Nuclear Physics A

ISSN

0375-9474

e-ISSN

—

Volume of the periodical

956

Issue of the periodical within the volume

Dec

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

4

Pages from-to

721-724

UT code for WoS article

000385898600151

EID of the result in the Scopus database

2-s2.0-84992026545