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

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10303 - Particles and field physics

Project

<a href="/en/project/LM2023040" target="_blank" >LM2023040: Research infrastructure for experiments at CERN</a><br>

Continuities

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

Publication year

2025

Confidentiality

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

Name of the periodical

PHYSICAL REVIEW C

ISSN

2469-9985

e-ISSN

2469-9993

Volume of the periodical

112

Issue of the periodical within the volume

4

Country of publishing house

US - UNITED STATES

Number of pages

19

Pages from-to

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UT code for WoS article

001639083400001

EID of the result in the Scopus database

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