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Charm production and fragmentation fractions at midrapidity in pp collisions at √s=13 TeV
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SYSNO ASEP 0583909 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Charm production and fragmentation fractions at midrapidity in pp collisions at √s=13 TeV Author(s) Acharya, S. (IN)
Adamová, Dagmar (UJF-V) RID, ORCID, SAI
Aglieri Rinella, G. (CH)
Agnello, M. (IT)
Bielčík, J. (CZ)
Bielčíková, Jana (UJF-V) RID, ORCID, SAI
Broz, M. (CZ)
Contreras, J. G. (CZ)
Filová, V. (CZ)
Grecká, Ekaterina (UJF-V) ORCID
Grund, D. (CZ)
Haidlová, S. (CZ)
Herman, T. (CZ)
Isakov, Artem (UJF-V) ORCID, SAI
Khuntia, A. (CZ)
Kotliarov, Artem (UJF-V) ORCID, SAI
Krupová, D. M. (CZ)
Křížek, Filip (UJF-V) RID, ORCID, SAI
Kushpil, Svetlana (UJF-V) RID, ORCID, SAI
Šafařík, K. (CZ)
Torres, S. R. (CZ)
Závada, Petr (FZU-D) RID, ORCIDNumber of authors 1035 Article number 086 Source Title Journal of High Energy Physics. - : Springer - ISSN 1029-8479
Roč. 12, DEC (2023)Number of pages 57 s. Publication form Print - P Language eng - English Country US - United States Keywords ALICE collaboration ; heavy ion collisions ; hadron-hadron scattering OECD category Nuclear physics Research Infrastructure CERN-CZ III - 90240 - Fyzikální ústav AV ČR, v. v. i. Method of publishing Open access Institutional support FZU-D - RVO:68378271 ; UJF-V - RVO:61389005 UT WOS 001157274100001 DOI 10.1007/JHEP12(2023)086 Annotation 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. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2024 Electronic address https://doi.org/10.1007/JHEP12(2023)086
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