Forward rapidity J/ψ production as a function of charged-particle multiplicity in pp collisions at √s = 5.02 and 13 TeV

Kód výsledku v IS VaVaI

RIV/68378271:_____/22:00558714 - isvavai.cz

Nalezeny alternativní kódy

RIV/61389005:_____/22:00558714

Výsledek na webu

https://doi.org/10.1007/JHEP06(2022)015

DOI - Digital Object Identifier

10.1007/JHEP06(2022)015

Jazyk výsledku

angličtina

Název v původním jazyce

Forward rapidity J/ψ production as a function of charged-particle multiplicity in pp collisions at √s = 5.02 and 13 TeV

Popis výsledku v původním jazyce

The production of J/psi is measured as a function of charged-particle multiplicity at forward rapidity in proton-proton (pp) collisions at center-of-mass energies root s = 5.02 and 13 TeV. The J/psi mesons are reconstructed via their decay into dimuons in the rapidity interval (2.5 < y < 4.0), whereas the charged-particle multiplicity density (dN(ch)/d eta) is measured at midrapidity (vertical bar eta vertical bar < 1). The production rate as a function of multiplicity is reported as the ratio of the yield in a given multiplicity interval to the multiplicity-integrated one. This observable shows a linear increase with charged-particle multiplicity normalized to the corresponding average value for inelastic events (dN(ch)/d eta/< dN(ch)/d eta >), at both the colliding energies. Measurements are compared with available ALICE results at midrapidity and theoretical model calculations. First measurement of the mean transverse momentum (< p(T)>) of J/psi in pp collisions exhibits an increasing trend as a function of dN(ch)/d eta/< dN(ch)/d eta > showing a saturation towards high charged-particle multiplicities.

Název v anglickém jazyce

Forward rapidity J/ψ production as a function of charged-particle multiplicity in pp collisions at √s = 5.02 and 13 TeV

Popis výsledku anglicky

The production of J/psi is measured as a function of charged-particle multiplicity at forward rapidity in proton-proton (pp) collisions at center-of-mass energies root s = 5.02 and 13 TeV. The J/psi mesons are reconstructed via their decay into dimuons in the rapidity interval (2.5 < y < 4.0), whereas the charged-particle multiplicity density (dN(ch)/d eta) is measured at midrapidity (vertical bar eta vertical bar < 1). The production rate as a function of multiplicity is reported as the ratio of the yield in a given multiplicity interval to the multiplicity-integrated one. This observable shows a linear increase with charged-particle multiplicity normalized to the corresponding average value for inelastic events (dN(ch)/d eta/< dN(ch)/d eta >), at both the colliding energies. Measurements are compared with available ALICE results at midrapidity and theoretical model calculations. First measurement of the mean transverse momentum (< p(T)>) of J/psi in pp collisions exhibits an increasing trend as a function of dN(ch)/d eta/< dN(ch)/d eta > showing a saturation towards high charged-particle multiplicities.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

LTT17018: Získávání nových poznatků o mikrosvětě v infrastruktuře CERN

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Journal of High Energy Physics

ISSN

1029-8479

e-ISSN

1029-8479

Svazek periodika

2022

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

33

Strana od-do

015

Kód UT WoS článku

000807500400009

EID výsledku v databázi Scopus

2-s2.0-85134017459