Measurement of the production cross section of prompt Xi(0)(c) baryons at midrapidity in pp collisions at root s=5.02 TeV

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F21%3A00547650" target="_blank" >RIV/68378271:_____/21:00547650 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389005:_____/21:00547650 RIV/68407700:21340/21:00352593

Výsledek na webu

<a href="https://doi.org/10.1007/JHEP10(2021)159" target="_blank" >https://doi.org/10.1007/JHEP10(2021)159</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP10(2021)159" target="_blank" >10.1007/JHEP10(2021)159</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Measurement of the production cross section of prompt Xi(0)(c) baryons at midrapidity in pp collisions at root s=5.02 TeV

Popis výsledku v původním jazyce

The transverse momentum (p(T)) differential cross section of the charm-strange baryon Xi(0)(c) is measured at midrapidity (vertical bar y vertical bar < 0.5) via its semileptonic decay into e(+)Xi(-)nu(e) in pp collisions at root s = 5.02TeV with the ALICE detector at the LHC. The ratio of the p(T)-differential Xi(0)(c)-baryon and D-0-meson production cross sections is also reported. The measurements are compared with simulations with different tunes of the PYTHIA 8 event generator, with predictions from a statistical hadronisation model (SHM) with a largely augmented set of charm-baryon states beyond the current lists of the Particle Data Group, and with models including hadronisation via quark coalescence. The pT-integrated cross section of prompt Xi(0)(c)-baryon production at midrapidity is also reported, which is used to calculate the baryon-to-meson ratio Xi(0)(c)/D-0 = 0.20 +/- 0.04 (stat.)(-0.07)(+0.08) (syst.). These results provide an additional indication of a modification of the charm fragmentation from e(+) e(-) and e-p collisions to pp collisions.

Název v anglickém jazyce

Measurement of the production cross section of prompt Xi(0)(c) baryons at midrapidity in pp collisions at root s=5.02 TeV

Popis výsledku anglicky

The transverse momentum (p(T)) differential cross section of the charm-strange baryon Xi(0)(c) is measured at midrapidity (vertical bar y vertical bar < 0.5) via its semileptonic decay into e(+)Xi(-)nu(e) in pp collisions at root s = 5.02TeV with the ALICE detector at the LHC. The ratio of the p(T)-differential Xi(0)(c)-baryon and D-0-meson production cross sections is also reported. The measurements are compared with simulations with different tunes of the PYTHIA 8 event generator, with predictions from a statistical hadronisation model (SHM) with a largely augmented set of charm-baryon states beyond the current lists of the Particle Data Group, and with models including hadronisation via quark coalescence. The pT-integrated cross section of prompt Xi(0)(c)-baryon production at midrapidity is also reported, which is used to calculate the baryon-to-meson ratio Xi(0)(c)/D-0 = 0.20 +/- 0.04 (stat.)(-0.07)(+0.08) (syst.). These results provide an additional indication of a modification of the charm fragmentation from e(+) e(-) and e-p collisions to pp collisions.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2021

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

2021

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

31

Strana od-do

159

Kód UT WoS článku

000709347300004

EID výsledku v databázi Scopus

2-s2.0-85118178787