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

Result code in 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>
Result on the web
<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>

Result language
angličtina
Original language name
Study of flavor dependence of the baryon-to-meson ratio in proton-proton collisions at root s=13 TeV
Original language description
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.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10303 - Particles and field physics

Project
<a href="/en/project/LM2023040" target="_blank" >LM2023040: Research infrastructure for experiments at CERN</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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