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

The ALICE collaboration alice-publications@cern.ch

doi:10.1007/JHEP12(2023)086

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

The ALICE collaboration [email protected]

Relativistic Nuclear Physics

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Measurements of the production cross sections of prompt D⁰, D⁺, D^*+, D_s⁺, Λ_c⁺, and Ξ_c⁺ charm hadrons at midrapidity in proton-proton collisions at 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 Λ_c⁺ (Ξ_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 cc¯ production cross section at midrapidity (|y| < 0.5) based on the sum of the cross sections of the weakly-decaying ground-state charm hadrons D⁰, D⁺, D_s⁺, Λ_c⁺, Ξ_c⁰ and, for the first time, Ξ_c⁺, and of the strongly-decaying J/ψ mesons. The first measurements of Ξ_c⁺ and Σ_c^0,++ 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 cc¯ production cross section at midrapidity is found to be at the upper bound of state-of-the-art perturbative QCD calculations.

Original language	English
Article number	86
Journal	Journal of High Energy Physics
Volume	2023
Issue number	12
DOIs	https://doi.org/10.1007/JHEP12(2023)086
State	Published - Dec 2023

Funding

The ALICE collaboration would like to thank all its engineers and technicians for their invaluable contributions to the construction of the experiment and the CERN accelerator teams for the outstanding performance of the LHC complex. The ALICE collaboration gratefully acknowledges the resources and support provided by all Grid centres and the Worldwide LHC Computing Grid (WLCG) collaboration. The ALICE collaboration acknowledges the following funding agencies for their support in building and running the ALICE detector: A.I. Alikhanyan National Science Laboratory (Yerevan Physics Institute) Foundation (ANSL), State Committee of Science and World Federation of Scientists (WFS), Armenia; Austrian Academy of Sciences, Austrian Science Fund (FWF): [M 2467-N36] and Nationalstiftung f\u00FCr Forschung, Technologie und Entwicklung, Austria; Ministry of Communications and High Technologies, National Nuclear Research Center, Azerbaijan; Conselho Nacional de Desenvolvimento Cient\u00EDfico e Tecnol\u00F3gico (CNPq), Financiadora de Estudos e Projetos (Finep), Funda\u00E7\u00E3o de Amparo \u00E0 Pesquisa do Estado de S\u00E3o Paulo (FAPESP) and Universidade Federal do Rio Grande do Sul (UFRGS), Brazil; Bulgarian Ministry of Education and Science, within the National Roadmap for Research Infrastructures 2020\u20132027 (object CERN), Bulgaria; Ministry of Education of China (MOEC), Ministry of Science & Technology of China (MSTC) and National Natural Science Foundation of China (NSFC), China; Ministry of Science and Education and Croatian Science Foundation, Croatia; Centro de Aplicaciones Tecnol\u00F3gicas y Desarrollo Nuclear (CEADEN), Cubaenerg\u00EDa, Cuba; Ministry of Education, Youth and Sports of the Czech Republic, Czech Republic; The Danish Council for Independent Research, Natural Sciences, the VILLUM FONDEN and Danish National Research Foundation (DNRF), Denmark; Helsinki Institute of Physics (HIP), Finland; Commissariat \u00E0 l\u2019Energie Atomique (CEA) and Institut National de Physique Nucl\u00E9aire et de Physique des Particules (IN2P3) and Centre National de la Recherche Scientifique (CNRS), France; Bundesministerium f\u00FCr Bildung und Forschung (BMBF) and GSI Helmholtzzentrum f\u00FCr Schwerionenforschung GmbH, Germany; General Secretariat for Research and Technology, Ministry of Education, Research and Religions, Greece; National Research, Development and Innovation Office, Hungary; Department of Atomic Energy Government of India (DAE), Department of Science and Technology, Government of India (DST), University Grants Commission, Government of India (UGC) and Council of Scientific and Industrial Research (CSIR), India; National Research and Innovation Agency \u2014 BRIN, Indonesia; Istituto Nazionale di Fisica Nucleare (INFN), Italy; Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT) and Japan Society for the Promotion of Science (JSPS) KAKENHI, Japan; Consejo Nacional de Ciencia (CONACYT) y Tecnolog\u00EDa, through Fondo de Cooperaci\u00F3n Internacional en Ciencia y Tecnolog\u00EDa (FONCICYT) and Direcci\u00F3n General de Asuntos del Personal Academico (DGAPA), Mexico; Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO), The Netherlands; The Research Council of Norway, Norway; Commission on Science and Technology for Sustainable Development in the South (COMSATS), Pakistan; Pontificia Universidad Cat\u00F3lica del Per\u00FA, Peru; Ministry of Education and Science, National Science Centre and WUT ID-UB, Poland; Korea Institute of Science and Technology Information and National Research Foundation of Korea (NRF), Republic of Korea; Ministry of Education and Scientific Research, Institute of Atomic Physics, Ministry of Research and Innovation and Institute of Atomic Physics and University Politehnica of Bucharest, Romania; Ministry of Education, Science, Research and Sport of the Slovak Republic, Slovakia; National Research Foundation of South Africa, South Africa; Swedish Research Council (VR) and Knut & Alice Wallenberg Foundation (KAW), Sweden; European Organization for Nuclear Research, Switzerland; Suranaree University of Technology (SUT), National Science and Technology Development Agency (NSTDA), Thailand Science Research and Innovation (TSRI) and National Science, Research and Innovation Fund (NSRF), Thailand; Turkish Energy, Nuclear and Mineral Research Agency (TENMAK), Turkey; National Academy of Sciences of Ukraine, Ukraine; Science and Technology Facilities Council (STFC), United Kingdom; National Science Foundation of the United States of America (NSF) and United States Department of Energy, Office of Nuclear Physics (DOE NP), United States of America. In addition, individual groups or members have received support from: European Research Council, Strong 2020 - Horizon 2020 (grant nos. 950692, 824093), European Union; Academy of Finland (Center of Excellence in Quark Matter) (grant nos. 346327, 346328), Finland;

Funders	Funder number
Council of Scientific and Industrial Research, India
State Committee of Science and World Federation
Ministry of Communications and High Technologies
Ministry of Education and Science
Department of Atomic Energy, Government of India
National Academy of Sciences of Ukraine
Thailand Science Research and Innovation
National Science and Technology Development Agency
National Research Foundation of Korea
Villum Fonden
National Science, Research and Innovation Fund
Ministry of Education of the People's Republic of China
Narodowe Centrum Nauki
University Grants Commission
Institut National de Physique Nucléaire et de Physique des Particules
Science and Technology Facilities Council
General Secretariat for Research and Technology, Ministry of Education, Research and Religions
Japan Society for the Promotion of Science
Nederlandse Organisatie voor Wetenschappelijk Onderzoek
Korea Institute of Science and Technology Information
Knut och Alice Wallenbergs Stiftelse
Ministry of Science and Education and Croatian Science Foundation
Exploratory Research Center on Life and Living Systems, National Institutes of Natural Sciences
Instituto Nazionale di Fisica Nucleare
Danmarks Frie Forskningsfond
Financiadora de Estudos e Projetos
Ontario Ministry of Research and Innovation
Department of Science and Technology, Ministry of Science and Technology, India
Consejo Nacional de Humanidades, Ciencias y Tecnologías
Norges Forskningsråd
Yerevan Physics Institute
Centre National de la Recherche Scientifique
Dirección General de Asuntos del Personal Académico, Universidad Nacional Autónoma de México
Bundesministerium für Bildung und Forschung
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
Danmarks Grundforskningsfond
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Suranaree University of Technology
Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear
Türkiye Enerji, Nükleer ve Maden Araştırma Kurumu
Nemzeti Kutatási Fejlesztési és Innovációs Hivatal
Ministry of Higher Education and Scientific Research
European Commission
GSI Helmholtzzentrum für Schwerionenforschung
U.S. Department of Energy
Institute of Atomic Physics and University Politehnica of Bucharest
Fundação de Amparo à Pesquisa do Estado de São Paulo
National Nuclear Research Center
WUT ID-UB
Institutul de Fizică Atomică
Ministry of Science and Technology of the People's Republic of China
Ministry of Education, Youth and Sports of the Czech Republic, Czech Republic
NSRF
Ministry of Education, Science, Research and Sport
Helsinki Institute of Physics
Fondo de Cooperación Internacional en Ciencia y Tecnología
Universidade Federal do Rio Grande do Sul
Österreichischen Akademie der Wissenschaften
University Grants Commission, Government of India
European Research Council
National Research Foundation
Badan Riset dan Inovasi Nasional
CERN
Nuclear Physics
Vetenskapsrådet
Horizon 2020
Österreichische Nationalstiftung für Forschung, Technologie und Entwicklung
Ministry of Education, Culture, Sports, Science and Technology
National Natural Science Foundation of China
Horizon 2020 Framework Programme	824093, 950692
Research Council of Finland	346328, 346327
Austrian Science Fund	M 2467-N36

Keywords

Hadron-Hadron Scattering
Heavy Quark Production
QCD

Access to Document

10.1007/JHEP12(2023)086

Cite this

@article{ac20aa0e8b814058b512270211024bb5,

title = "Charm production and fragmentation fractions at midrapidity in pp collisions at s = 13 TeV",

abstract = "Measurements of the production cross sections of prompt D0, D+, D*+, Ds+, Λc+, and Ξc+ charm hadrons at midrapidity in proton-proton collisions at s = 13 TeV with the ALICE detector are presented. The D-meson cross sections as a function of transverse momentum (pT) are provided with improved precision and granularity. The ratios of pT-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 Λc+ (Ξc+) baryon production extend the measured pT intervals down to pT = 0(3) GeV/c. These measurements are used to determine the charm-quark fragmentation fractions and the cc¯ production cross section at midrapidity (|y| < 0.5) based on the sum of the cross sections of the weakly-decaying ground-state charm hadrons D0, D+, Ds+, Λc+, Ξc0 and, for the first time, Ξc+, and of the strongly-decaying J/ψ mesons. The first measurements of Ξc+ and Σc0,++ 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 cc¯ production cross section at midrapidity is found to be at the upper bound of state-of-the-art perturbative QCD calculations.",

keywords = "Hadron-Hadron Scattering, Heavy Quark Production, QCD",

author = "{The ALICE collaboration [email protected]} and S. Acharya and D. Adamov{\'a} and {Aglieri Rinella}, G. and M. Agnello and N. Agrawal and Z. Ahammed and S. Ahmad and Ahn, {S. U.} and I. Ahuja and A. Akindinov and M. Al-Turany and D. Aleksandrov and B. Alessandro and Alfanda, {H. M.} and {Alfaro Molina}, R. and B. Ali and A. Alici and N. Alizadehvandchali and A. Alkin and J. Alme and G. Alocco and T. Alt and Altamura, {A. R.} and I. Altsybeev and Anaam, {M. N.} and C. Andrei and N. Andreou and A. Andronic and V. Anguelov and F. Antinori and P. Antonioli and N. Apadula and L. Aphecetche and H. Appelsh{\"a}user and C. Arata and S. Arcelli and M. Aresti and R. Arnaldi and Arneiro, {J. G.M.C.A.} and Arsene, {I. C.} and M. Arslandok and A. Augustinus and R. Averbeck and Azmi, {M. D.} and H. Baba and A. Badal{\`a} and J. Bae and F. Bock and Read, {K. F.} and Schmidt, {N. V.}",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2023.",

year = "2023",

month = dec,

doi = "10.1007/JHEP12(2023)086",

language = "English",

volume = "2023",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

publisher = "Springer",

number = "12",

}

TY - JOUR

T1 - Charm production and fragmentation fractions at midrapidity in pp collisions at s = 13 TeV

AU - The ALICE collaboration [email protected]

AU - Acharya, S.

AU - Adamová, D.

AU - Aglieri Rinella, G.

AU - Agnello, M.

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Ahmad, S.

AU - Ahn, S. U.

AU - Ahuja, I.

AU - Akindinov, A.

AU - Al-Turany, M.

AU - Aleksandrov, D.

AU - Alessandro, B.

AU - Alfanda, H. M.

AU - Alfaro Molina, R.

AU - Ali, B.

AU - Alici, A.

AU - Alizadehvandchali, N.

AU - Alkin, A.

AU - Alme, J.

AU - Alocco, G.

AU - Alt, T.

AU - Altamura, A. R.

AU - Altsybeev, I.

AU - Anaam, M. N.

AU - Andrei, C.

AU - Andreou, N.

AU - Andronic, A.

AU - Anguelov, V.

AU - Antinori, F.

AU - Antonioli, P.

AU - Apadula, N.

AU - Aphecetche, L.

AU - Appelshäuser, H.

AU - Arata, C.

AU - Arcelli, S.

AU - Aresti, M.

AU - Arnaldi, R.

AU - Arneiro, J. G.M.C.A.

AU - Arsene, I. C.

AU - Arslandok, M.

AU - Augustinus, A.

AU - Averbeck, R.

AU - Azmi, M. D.

AU - Baba, H.

AU - Badalà, A.

AU - Bae, J.

AU - Bock, F.

AU - Read, K. F.

AU - Schmidt, N. V.

PY - 2023/12

Y1 - 2023/12

N2 - Measurements of the production cross sections of prompt D0, D+, D*+, Ds+, Λc+, and Ξc+ charm hadrons at midrapidity in proton-proton collisions at s = 13 TeV with the ALICE detector are presented. The D-meson cross sections as a function of transverse momentum (pT) are provided with improved precision and granularity. The ratios of pT-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 Λc+ (Ξc+) baryon production extend the measured pT intervals down to pT = 0(3) GeV/c. These measurements are used to determine the charm-quark fragmentation fractions and the cc¯ production cross section at midrapidity (|y| < 0.5) based on the sum of the cross sections of the weakly-decaying ground-state charm hadrons D0, D+, Ds+, Λc+, Ξc0 and, for the first time, Ξc+, and of the strongly-decaying J/ψ mesons. The first measurements of Ξc+ and Σc0,++ 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 cc¯ production cross section at midrapidity is found to be at the upper bound of state-of-the-art perturbative QCD calculations.

AB - Measurements of the production cross sections of prompt D0, D+, D*+, Ds+, Λc+, and Ξc+ charm hadrons at midrapidity in proton-proton collisions at s = 13 TeV with the ALICE detector are presented. The D-meson cross sections as a function of transverse momentum (pT) are provided with improved precision and granularity. The ratios of pT-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 Λc+ (Ξc+) baryon production extend the measured pT intervals down to pT = 0(3) GeV/c. These measurements are used to determine the charm-quark fragmentation fractions and the cc¯ production cross section at midrapidity (|y| < 0.5) based on the sum of the cross sections of the weakly-decaying ground-state charm hadrons D0, D+, Ds+, Λc+, Ξc0 and, for the first time, Ξc+, and of the strongly-decaying J/ψ mesons. The first measurements of Ξc+ and Σc0,++ 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 cc¯ production cross section at midrapidity is found to be at the upper bound of state-of-the-art perturbative QCD calculations.

KW - Hadron-Hadron Scattering

KW - Heavy Quark Production

KW - QCD

UR - http://www.scopus.com/inward/record.url?scp=85189921089&partnerID=8YFLogxK

U2 - 10.1007/JHEP12(2023)086

DO - 10.1007/JHEP12(2023)086

M3 - Article

AN - SCOPUS:85189921089

SN - 1126-6708

VL - 2023

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 12

M1 - 86

ER -

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

Abstract

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this