f0(980) production in inelastic 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%3A00373767" target="_blank" >RIV/68407700:21340/23:00373767 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.physletb.2022.137644" target="_blank" >https://doi.org/10.1016/j.physletb.2022.137644</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.physletb.2022.137644" target="_blank" >10.1016/j.physletb.2022.137644</a>

Jazyk výsledku

angličtina

Název v původním jazyce

f0(980) production in inelastic pp collisions at root s=5.02 TeV

Popis výsledku v původním jazyce

The measurement of the production of f(0)(980) in inelastic pp collisions at root s= 5.02TeV is presented. This is the first reported measurement of inclusive f(0)(980) yield at LHC energies. The production is measured at midrapidity, vertical bar y vertical bar< 0.5, in a wide transverse momentum range, 0< p(T)< 16GeV/c, by reconstructing the resonance in the f(0)(980) -> pi(+) pi(-) hadronic decay channel using the ALICE detector. The p(T)-differential yields are compared to those of pions, protons and phi mesons as well as to predictions from the HERWIG7.2 QCD-inspired Monte Carlo event generator and calculations from a coalescence model that uses the AMPT model as an input. The ratio of the p(T)-integrated yield of f(0)(980) relative to pions is compared to measurements in e(+) e(-) and pp collisions at lower energies and predictions from statistical hadronisation models and HERWIG7.2. A mild collision energy dependence of the f(0)(980) to pion production is observed in pp collisions from SPS to LHC energies. All considered models underpredict the p(T)-integrated 2f(0)(980)/(pi(+)+pi(-)) ratio. The prediction from the canonical statistical hadronisation model assuming a zero total strangeness content of f(0)(980) is consistent with the data within 1.9 s and is the closest to the data. The results provide an essential reference for future measurements of the particle yield and nuclear modification in p-Pb and Pb-Pb collisions, which have been proposed to be instrumental to probe the elusive nature and quark composition of the f(0)(980) scalar meson.

Název v anglickém jazyce

f0(980) production in inelastic pp collisions at root s=5.02 TeV

Popis výsledku anglicky

The measurement of the production of f(0)(980) in inelastic pp collisions at root s= 5.02TeV is presented. This is the first reported measurement of inclusive f(0)(980) yield at LHC energies. The production is measured at midrapidity, vertical bar y vertical bar< 0.5, in a wide transverse momentum range, 0< p(T)< 16GeV/c, by reconstructing the resonance in the f(0)(980) -> pi(+) pi(-) hadronic decay channel using the ALICE detector. The p(T)-differential yields are compared to those of pions, protons and phi mesons as well as to predictions from the HERWIG7.2 QCD-inspired Monte Carlo event generator and calculations from a coalescence model that uses the AMPT model as an input. The ratio of the p(T)-integrated yield of f(0)(980) relative to pions is compared to measurements in e(+) e(-) and pp collisions at lower energies and predictions from statistical hadronisation models and HERWIG7.2. A mild collision energy dependence of the f(0)(980) to pion production is observed in pp collisions from SPS to LHC energies. All considered models underpredict the p(T)-integrated 2f(0)(980)/(pi(+)+pi(-)) ratio. The prediction from the canonical statistical hadronisation model assuming a zero total strangeness content of f(0)(980) is consistent with the data within 1.9 s and is the closest to the data. The results provide an essential reference for future measurements of the particle yield and nuclear modification in p-Pb and Pb-Pb collisions, which have been proposed to be instrumental to probe the elusive nature and quark composition of the f(0)(980) scalar meson.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

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

Physics Letters B

ISSN

0370-2693

e-ISSN

1873-2445

Svazek periodika

846

Číslo periodika v rámci svazku

Nov

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

14

Strana od-do

—

Kód UT WoS článku

001170338100001

EID výsledku v databázi Scopus

2-s2.0-85173068301