Production of omega mesons in pp collisions at root s=7 TeV

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F20%3A00538376" target="_blank" >RIV/61389005:_____/20:00538376 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/20:00538376

Výsledek na webu

<a href="https://doi.org/10.1140/epjc/s10052-020-08651-y" target="_blank" >https://doi.org/10.1140/epjc/s10052-020-08651-y</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epjc/s10052-020-08651-y" target="_blank" >10.1140/epjc/s10052-020-08651-y</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Production of omega mesons in pp collisions at root s=7 TeV

Popis výsledku v původním jazyce

The invariant differential cross section of inclusive omega (782) meson production at midrapidity (|y|<0.5) in pp collisions at s=7 TeV was measured with the ALICE detector at the LHC over a transverse momentum range of 2<pT<17 GeV/c. The omega meson was reconstructed via its omega -> pi+pi-pi 0 decay channel. The measured omega production cross section is compared to various calculations: PYTHIA 8.2 Monash 2013 describes the data, while PYTHIA 8.2 Tune 4C overestimates the data by about 50%. A recent NLO calculation, which includes a model describing the fragmentation of the whole vector-meson nonet, describes the data within uncertainties below 6 GeV/c, while it overestimates the data by up to 50% for higher pT. The omega/pi 0 ratio is in agreement with previous measurements at lower collision energies and the PYTHIA calculations. In addition, the measurement is compatible with transverse mass scaling within the measured pT range and the ratio is constant with C omega/pi 0=0.67 +/- 0.03(stat) +/- 0.04(sys) above a transverse momentum of 2.5 GeV/c.

Název v anglickém jazyce

Production of omega mesons in pp collisions at root s=7 TeV

Popis výsledku anglicky

The invariant differential cross section of inclusive omega (782) meson production at midrapidity (|y|<0.5) in pp collisions at s=7 TeV was measured with the ALICE detector at the LHC over a transverse momentum range of 2<pT<17 GeV/c. The omega meson was reconstructed via its omega -> pi+pi-pi 0 decay channel. The measured omega production cross section is compared to various calculations: PYTHIA 8.2 Monash 2013 describes the data, while PYTHIA 8.2 Tune 4C overestimates the data by about 50%. A recent NLO calculation, which includes a model describing the fragmentation of the whole vector-meson nonet, describes the data within uncertainties below 6 GeV/c, while it overestimates the data by up to 50% for higher pT. The omega/pi 0 ratio is in agreement with previous measurements at lower collision energies and the PYTHIA calculations. In addition, the measurement is compatible with transverse mass scaling within the measured pT range and the ratio is constant with C omega/pi 0=0.67 +/- 0.03(stat) +/- 0.04(sys) above a transverse momentum of 2.5 GeV/c.

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

European Physical Journal C

ISSN

1434-6044

e-ISSN

—

Svazek periodika

80

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

16

Strana od-do

1130

Kód UT WoS článku

000598026500007

EID výsledku v databázi Scopus

2-s2.0-85097283510