Charm production and fragmentation fractions at midrapidity in pp collisions at √s=13 TeV

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F23%3A00583909" target="_blank" >RIV/61389005:_____/23:00583909 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/23:00583909

Result on the web

<a href="https://doi.org/10.1007/JHEP12(2023)086" target="_blank" >https://doi.org/10.1007/JHEP12(2023)086</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP12(2023)086" target="_blank" >10.1007/JHEP12(2023)086</a>

Result language

angličtina

Original language name

Charm production and fragmentation fractions at midrapidity in pp collisions at √s=13 TeV

Original language description

Measurements of the production cross sections of prompt D-0, D+, D*(+), D-s(+), Lambda(+)(c), and Xi(+)(c) charm hadrons at midrapidity in proton-proton collisions at root s = 13 TeV with the ALICE detector are presented. The D-meson cross sections as a function of transverse momentum (p(T)) are provided with improved precision and granularity. The ratios of p(T)-differential meson production cross sections based on this publication and on measurements at different rapidity and collision energy provide a constraint on gluon parton distribution functions at low values of Bjorken-x (10(-5)-10(-4)). The measurements of Lambda(+)(c) (Xi(+)(c)) baryon production extend the measured p(T) intervals down to p(T) = 0(3) GeV/c. These measurements are used to determine the charm-quark fragmentation fractions and the c (c) over bar production cross section at midrapidity (|y| < 0.5) based on the sum of the cross sections of the weakly-decaying ground-state charm hadrons D-0, D+, D-s(+), Lambda(+)(c), Xi(0)(c) and, for the first time, Xi(+)(c), and of the strongly-decaying J/psi mesons. The first measurements of Xi(+)(c) and Sigma(0,++)(c) fragmentation fractions at midrapidity are also reported. A significantly larger fraction of charm quarks hadronising to baryons is found compared to e(+)e(-) and ep collisions. The c (c) over bar production cross section at midrapidity is found to be at the upper bound of state-of-the-art perturbative QCD calculations.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10304 - Nuclear physics

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

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

Name of the periodical

Journal of High Energy Physics

ISSN

1029-8479

e-ISSN

1029-8479

Volume of the periodical

12

Issue of the periodical within the volume

DEC

Country of publishing house

US - UNITED STATES

Number of pages

57

Pages from-to

086

UT code for WoS article

001157274100001

EID of the result in the Scopus database

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