Inclusive quarkonium production in pp collisions at root s=5.02 TeV

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F23%3A00367671" target="_blank" >RIV/68407700:21340/23:00367671 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1140/epjc/s10052-022-10896-8" target="_blank" >https://doi.org/10.1140/epjc/s10052-022-10896-8</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epjc/s10052-022-10896-8" target="_blank" >10.1140/epjc/s10052-022-10896-8</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Inclusive quarkonium production in pp collisions at root s=5.02 TeV

Popis výsledku v původním jazyce

This article reports on the inclusive production cross section of several quarkonium states, J/psi, psi(2S), Upsilon(1S), Upsilon(2S), and Upsilon(3S), measured with the ALICE detector at the LHC, in pp collisions at root s = 5.02 TeV. The analysis is performed in the dimuon decay channel at forward rapidity (2.5 < y < 4). The integrated cross sections and transverse-momentum (p(T)) and rapidity (y) differential cross sections for J/psi, psi(2S), Upsilon(1S), and the psi(2S)-to-J/psi cross section ratios are presented. The integrated cross sections, assuming unpolarized quarkonia, are: sigma(J/psi) (p(T) < 20 GeV/c) = 5.88 +/- 0.03 +/- 0.34 mu b, sigma(psi(2S)) (p(T) < 12 GeV/c) = 0.87 +/- 0.06 +/- 0.10 mu b, sigma(Upsilon(1S)) (p(T) < 15 GeV/c) = 45.5 +/- 3.9 +/- 3.5 nb, sigma(Upsilon(2S)) (p(T) < 15 GeV/c) = 22.4 +/- 3.2 +/- 2.7 nb, and sigma(Upsilon(3S)) (p(T) < 15 GeV/c) = 4.9 +/- 2.2 +/- 1.0 nb, where the first (second) uncertainty is the statistical (systematic) one. For the first time, the cross sections of the three Upsilon states, as well as the psi(2S) one as a function of p(T) and y, are measured at root s = 5.02 TeV at forward rapidity. These measurements also significantly extend the J/psi p(T) reach and supersede previously published results. A comparison with ALICE measurements in pp collisions at root s = 2.76, 7, 8, and 13 TeV is presented and the energy dependence of quarkonium production cross sections is discussed. Finally, the results are compared with the predictions from several production models.

Název v anglickém jazyce

Inclusive quarkonium production in pp collisions at root s=5.02 TeV

Popis výsledku anglicky

This article reports on the inclusive production cross section of several quarkonium states, J/psi, psi(2S), Upsilon(1S), Upsilon(2S), and Upsilon(3S), measured with the ALICE detector at the LHC, in pp collisions at root s = 5.02 TeV. The analysis is performed in the dimuon decay channel at forward rapidity (2.5 < y < 4). The integrated cross sections and transverse-momentum (p(T)) and rapidity (y) differential cross sections for J/psi, psi(2S), Upsilon(1S), and the psi(2S)-to-J/psi cross section ratios are presented. The integrated cross sections, assuming unpolarized quarkonia, are: sigma(J/psi) (p(T) < 20 GeV/c) = 5.88 +/- 0.03 +/- 0.34 mu b, sigma(psi(2S)) (p(T) < 12 GeV/c) = 0.87 +/- 0.06 +/- 0.10 mu b, sigma(Upsilon(1S)) (p(T) < 15 GeV/c) = 45.5 +/- 3.9 +/- 3.5 nb, sigma(Upsilon(2S)) (p(T) < 15 GeV/c) = 22.4 +/- 3.2 +/- 2.7 nb, and sigma(Upsilon(3S)) (p(T) < 15 GeV/c) = 4.9 +/- 2.2 +/- 1.0 nb, where the first (second) uncertainty is the statistical (systematic) one. For the first time, the cross sections of the three Upsilon states, as well as the psi(2S) one as a function of p(T) and y, are measured at root s = 5.02 TeV at forward rapidity. These measurements also significantly extend the J/psi p(T) reach and supersede previously published results. A comparison with ALICE measurements in pp collisions at root s = 2.76, 7, 8, and 13 TeV is presented and the energy dependence of quarkonium production cross sections is discussed. Finally, the results are compared with the predictions from several production models.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Projekt

<a href="/cs/project/LM2018104" target="_blank" >LM2018104: Výzkumná infrastruktura pro experimenty v CERN</a><br>

Návaznosti

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

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

European Physical Journal C

ISSN

1434-6044

e-ISSN

1434-6052

Svazek periodika

83

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

27

Strana od-do

—

Kód UT WoS článku

000927941200003

EID výsledku v databázi Scopus

2-s2.0-85146764717