Study of flavor dependence of the baryon-to-meson ratio in proton-proton collisions at root s=13 TeV

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F23%3A00372156" target="_blank" >RIV/68407700:21340/23:00372156 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1103/PhysRevD.108.112003" target="_blank" >https://doi.org/10.1103/PhysRevD.108.112003</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevD.108.112003" target="_blank" >10.1103/PhysRevD.108.112003</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Study of flavor dependence of the baryon-to-meson ratio in proton-proton collisions at root s=13 TeV

Popis výsledku v původním jazyce

The production cross sections of D-0 and Lambda(+)(c) hadrons originating from beauty-hadron decays (i.e., nonprompt) were measured for the first time at midrapidity (|y| < 0.5) by the ALICE Collaboration in proton-proton collisions at a center-of-mass energy root s = 13 TeV. They are described within uncertainties by perturbative QCD calculations employing the fragmentation fractions of beauty quarks to baryons measured at forward rapidity by the LHCb Collaboration. The bb production cross section per unit of rapidity at midrapidity, estimated from these measurements, is d sigma(bb)/dy|(|y|<0.5 )= 83.1 +/- 3.5(stat) +/- 5.4(syst)(-3.2)(+12.3) (extrap) mu b. The baryon-to-meson ratios are computed to investigate the hadronization mechanism of beauty quarks. The nonprompt Lambda(+)(c)/D-0 production ratio has a similar trend to the one measured for the promptly produced charmed particles and to the p/pi(+) and Lambda/K-S(0) ratios, suggesting a similar baryon-formation mechanism among light, strange, charm, and beauty hadrons. The p(T) -integrated nonprompt Lambda(+)(c)/D-0 ratio is found to be significantly higher than the one measured in e(+)e(-) collisions.

Název v anglickém jazyce

Study of flavor dependence of the baryon-to-meson ratio in proton-proton collisions at root s=13 TeV

Popis výsledku anglicky

The production cross sections of D-0 and Lambda(+)(c) hadrons originating from beauty-hadron decays (i.e., nonprompt) were measured for the first time at midrapidity (|y| < 0.5) by the ALICE Collaboration in proton-proton collisions at a center-of-mass energy root s = 13 TeV. They are described within uncertainties by perturbative QCD calculations employing the fragmentation fractions of beauty quarks to baryons measured at forward rapidity by the LHCb Collaboration. The bb production cross section per unit of rapidity at midrapidity, estimated from these measurements, is d sigma(bb)/dy|(|y|<0.5 )= 83.1 +/- 3.5(stat) +/- 5.4(syst)(-3.2)(+12.3) (extrap) mu b. The baryon-to-meson ratios are computed to investigate the hadronization mechanism of beauty quarks. The nonprompt Lambda(+)(c)/D-0 production ratio has a similar trend to the one measured for the promptly produced charmed particles and to the p/pi(+) and Lambda/K-S(0) ratios, suggesting a similar baryon-formation mechanism among light, strange, charm, and beauty hadrons. The p(T) -integrated nonprompt Lambda(+)(c)/D-0 ratio is found to be significantly higher than the one measured in e(+)e(-) collisions.

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

2023

Kód důvěrnosti údajů

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

Název periodika

Physical Review D

ISSN

2470-0010

e-ISSN

2470-0029

Svazek periodika

108

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

19

Strana od-do

—

Kód UT WoS článku

001137344800006

EID výsledku v databázi Scopus

2-s2.0-85181679313