Measurement of nuclear effects on psi(2S) production in p-Pb collisions at root s(NN)=8:16 TeV

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F20%3A00531635" target="_blank" >RIV/61389005:_____/20:00531635 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/20:00531635 RIV/68407700:21340/20:00342789

Výsledek na webu

<a href="https://doi.org/10.1007/JHEP07(2020)237" target="_blank" >https://doi.org/10.1007/JHEP07(2020)237</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP07(2020)237" target="_blank" >10.1007/JHEP07(2020)237</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Measurement of nuclear effects on psi(2S) production in p-Pb collisions at root s(NN)=8:16 TeV

Popis výsledku v původním jazyce

Inclusive psi(2S) production is measured in p-Pb collisions at the centre-of-mass energy per nucleon-nucleon pair root s(NN) = 8.16 TeV, using the ALICE detector at the CERN LHC. The production of psi(2S) is studied at forward (2.03< y(cms)<3.53) and backward (-4.46< y(cms)< -2.96) centre-of-mass rapidity and for transverse momentump(T)<12 GeV/cvia the decay to muon pairs. In this paper, we report the integrated as well as they(cms)- andp(T)-differential inclusive production cross sections. Nuclear effects on psi(2S) production are studied via the determination of the nuclear modification factor that shows a strong suppression at both forward and backward centre-of-mass rapidities. Comparisons with corresponding results for inclusive J/psi show a similar suppression for the two states at forward rapidity (p-going direction), but a stronger suppression for psi(2S) at backward rapidity (Pb-going direction). As a function ofp(T), no clear dependence of the nuclear modification factor is found. The relative size of nuclear effects on psi(2S) production compared to J/psi is also studied via the double ratio of production cross sections [sigma(psi(2S))/sigma(J/psi)]pPb/[sigma(psi(2S))/sigma(J/psi)](pp) between p-Pb and pp collisions. The results are compared with theoretical models that include various effects related to the initial and final state of the collision system and also with previous measurements at root s(NN) = 5.02 TeV.

Název v anglickém jazyce

Measurement of nuclear effects on psi(2S) production in p-Pb collisions at root s(NN)=8:16 TeV

Popis výsledku anglicky

Inclusive psi(2S) production is measured in p-Pb collisions at the centre-of-mass energy per nucleon-nucleon pair root s(NN) = 8.16 TeV, using the ALICE detector at the CERN LHC. The production of psi(2S) is studied at forward (2.03< y(cms)<3.53) and backward (-4.46< y(cms)< -2.96) centre-of-mass rapidity and for transverse momentump(T)<12 GeV/cvia the decay to muon pairs. In this paper, we report the integrated as well as they(cms)- andp(T)-differential inclusive production cross sections. Nuclear effects on psi(2S) production are studied via the determination of the nuclear modification factor that shows a strong suppression at both forward and backward centre-of-mass rapidities. Comparisons with corresponding results for inclusive J/psi show a similar suppression for the two states at forward rapidity (p-going direction), but a stronger suppression for psi(2S) at backward rapidity (Pb-going direction). As a function ofp(T), no clear dependence of the nuclear modification factor is found. The relative size of nuclear effects on psi(2S) production compared to J/psi is also studied via the double ratio of production cross sections [sigma(psi(2S))/sigma(J/psi)]pPb/[sigma(psi(2S))/sigma(J/psi)](pp) between p-Pb and pp collisions. The results are compared with theoretical models that include various effects related to the initial and final state of the collision system and also with previous measurements at root s(NN) = 5.02 TeV.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10304 - Nuclear physics

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

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

—

Svazek periodika

2020

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

27

Strana od-do

237

Kód UT WoS článku

000556005800001

EID výsledku v databázi Scopus

2-s2.0-85088872477