Measurement of ω meson production in pp and p-Pb collisions at root sNN=5.02 TeV

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F25%3A00389208" target="_blank" >RIV/68407700:21340/25:00389208 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1103/ls6w-x1bb" target="_blank" >https://doi.org/10.1103/ls6w-x1bb</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/ls6w-x1bb" target="_blank" >10.1103/ls6w-x1bb</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Measurement of ω meson production in pp and p-Pb collisions at root sNN=5.02 TeV

Popis výsledku v původním jazyce

We present the measurement of the p(T)-differential production cross section of omega mesons in pp and p-Pb collisions at root s(NN) = 5.02 TeV at midrapidity by ALICE. In addition, the first measurement of the nuclear modification factor R-pPb for omega mesons at LHC energies is presented, complementing the existing measurements of lighter neutral mesons such as the pi(0) and eta. Within the measured p(T) range, the R-pPb of omega mesons is compatible with no cold nuclear matter effects within the uncertainties, consistent with previous measurements at lower energies. The omega/pi(0) ratio is presented for both collision systems, showing no collision system dependence within the uncertainties. The comparison to previously published omega/pi(0) ratios at lower and higher collision energies in pp collisions suggests a decreasing trend of the ratio above p(T) = 4 GeV/c with increasing collision energy. The data in both collision systems are compared to predictions from PYTHIA 8, EPOS LHC, and DPMJET event generators, revealing significant shortcomings in these models' ability to describe the production of omega mesons.

Název v anglickém jazyce

Measurement of ω meson production in pp and p-Pb collisions at root sNN=5.02 TeV

Popis výsledku anglicky

We present the measurement of the p(T)-differential production cross section of omega mesons in pp and p-Pb collisions at root s(NN) = 5.02 TeV at midrapidity by ALICE. In addition, the first measurement of the nuclear modification factor R-pPb for omega mesons at LHC energies is presented, complementing the existing measurements of lighter neutral mesons such as the pi(0) and eta. Within the measured p(T) range, the R-pPb of omega mesons is compatible with no cold nuclear matter effects within the uncertainties, consistent with previous measurements at lower energies. The omega/pi(0) ratio is presented for both collision systems, showing no collision system dependence within the uncertainties. The comparison to previously published omega/pi(0) ratios at lower and higher collision energies in pp collisions suggests a decreasing trend of the ratio above p(T) = 4 GeV/c with increasing collision energy. The data in both collision systems are compared to predictions from PYTHIA 8, EPOS LHC, and DPMJET event generators, revealing significant shortcomings in these models' ability to describe the production of omega mesons.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10303 - Particles and field physics

Projekt

<a href="/cs/project/LM2023040" target="_blank" >LM2023040: Výzkumná infrastruktura pro experimenty v CERN</a><br>

Návaznosti

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

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

PHYSICAL REVIEW C

ISSN

2469-9985

e-ISSN

2469-9993

Svazek periodika

112

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

19

Strana od-do

—

Kód UT WoS článku

001639083400001

EID výsledku v databázi Scopus

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