Multiplicity-dependent production of Σ(1385)± and (1530)0 in pp collisions at root s=13 TeV

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F24%3A00379784" target="_blank" >RIV/68407700:21340/24:00379784 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1007/JHEP05(2024)317" target="_blank" >https://doi.org/10.1007/JHEP05(2024)317</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP05(2024)317" target="_blank" >10.1007/JHEP05(2024)317</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Multiplicity-dependent production of Σ(1385)± and (1530)0 in pp collisions at root s=13 TeV

Popis výsledku v původním jazyce

The production yields of the Sigma(1385)(+/-) and.(1530)(0) resonances are measured in pp collisions at root s = 13TeV with ALICE. The measurements are performed as a function of the charged-particle multiplicity dN(ch)/d eta , which is related to the energy density produced in the collision. The results include transverse momentum (p(T)) distributions, p(T)-integrated yields, mean transverse momenta of Sigma(1385)(+/-) and.(1530)(0), as well as ratios of the p(T)-integrated resonance yields relative to yields of other hadron species. The Sigma(1385)(+/-)/pi(+/-) and Xi(1530)(0)/ pi(+/-) yield ratios are consistent with the trend of the enhancement of strangeness production from low to high multiplicity pp collisions, which was previously observed for strange and multi-strange baryons. The yield ratio between the measured resonances and the long-lived baryons with the same strangeness content exhibits a hint of a mild increasing trend at low multiplicity, despite too large uncertainties to exclude the flat behaviour. The results are compared with predictions from models such as EPOS-LHC and PYTHIA 8 with Rope shoving. The latter provides the best description of the multiplicity dependence of the Sigma(1385)(+/-) and Xi(1530)(0) production in pp collisions at root s = 13TeV.

Název v anglickém jazyce

Multiplicity-dependent production of Σ(1385)± and (1530)0 in pp collisions at root s=13 TeV

Popis výsledku anglicky

The production yields of the Sigma(1385)(+/-) and.(1530)(0) resonances are measured in pp collisions at root s = 13TeV with ALICE. The measurements are performed as a function of the charged-particle multiplicity dN(ch)/d eta , which is related to the energy density produced in the collision. The results include transverse momentum (p(T)) distributions, p(T)-integrated yields, mean transverse momenta of Sigma(1385)(+/-) and.(1530)(0), as well as ratios of the p(T)-integrated resonance yields relative to yields of other hadron species. The Sigma(1385)(+/-)/pi(+/-) and Xi(1530)(0)/ pi(+/-) yield ratios are consistent with the trend of the enhancement of strangeness production from low to high multiplicity pp collisions, which was previously observed for strange and multi-strange baryons. The yield ratio between the measured resonances and the long-lived baryons with the same strangeness content exhibits a hint of a mild increasing trend at low multiplicity, despite too large uncertainties to exclude the flat behaviour. The results are compared with predictions from models such as EPOS-LHC and PYTHIA 8 with Rope shoving. The latter provides the best description of the multiplicity dependence of the Sigma(1385)(+/-) and Xi(1530)(0) production in pp collisions at root s = 13TeV.

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/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

2024

Kód důvěrnosti údajů

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

Název periodika

Journal of High Energy Physics

ISSN

1029-8479

e-ISSN

1029-8479

Svazek periodika

2024

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

IT - Italská republika

Počet stran výsledku

35

Strana od-do

—

Kód UT WoS článku

001270345000001

EID výsledku v databázi Scopus

2-s2.0-85203834060