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Investigating charm production and fragmentation via azimuthal correlations of prompt D mesons with charged particles in pp collisions at √s = 13 TeV
- 1.0557035 - ÚJF 2023 RIV US eng J - Journal Article
Acharya, S. - Adamová, Dagmar - Adler, A. - Adolfsson, J. - Bielčík, J. - Bielčíková, Jana - Broz, M. - Contreras, J. G. - Herman, T. - Horák, D. - Isakov, Artem - Kotliarov, Artem - Křížek, Filip - Křížková Gajdošová, K. - Kushpil, Svetlana - Lavička, R. - Mareš, Jiří A. - Petráček, V. - Šafařík, K. - Torres, S. R. - Trzeciak, B. A. - Závada, Petr … Total 1014 authors
Investigating charm production and fragmentation via azimuthal correlations of prompt D mesons with charged particles in pp collisions at √s = 13 TeV.
European Physical Journal C. Roč. 82, č. 4 (2022), č. článku 335. ISSN 1434-6044. E-ISSN 1434-6052
R&D Projects: GA MŠMT(CZ) LTT17018
Research Infrastructure: CERN-CZ II - 90104
Institutional support: RVO:68378271 ; RVO:61389005
Keywords : ALICE collaboration * heavy ion experiment
OECD category: Nuclear physics; Particles and field physics (FZU-D)
Impact factor: 4.4, year: 2022
Method of publishing: Open access
https://doi.org/10.1140/epjc/s10052-022-10267-3
Angular correlations of heavy-flavour and charged particles in high-energy proton-proton collisions are sensitive to the production mechanisms of heavy quarks and to their fragmentation as well as hadronisation processes. The measurement of the azimuthal-correlation function of prompt D mesons with charged particles in proton-proton collisions at a centre-of-mass energy of root s = 13 TeV with the ALICE detector is reported, considering D-0, D+, and D*(+) mesons in the transverse-momentum interval 3 < p(T) < 36 GeV/c at midrapidity (vertical bar y vertical bar < 0.5), and charged particles with p(T) > 0.3 GeV/c and pseudorapidity vertical bar eta vertical bar < 0.8. This measurement has an improved precision and provides an extended transverse-momentum coverage compared to previous ALICE measurements at lower energies. The study is also performed as a function of the charged-particle multiplicity, showing no modifications of the correlation function with multiplicity within uncertainties. The properties and the transverse-momentum evolution of the near- and awayside correlation peaks are studied and compared with predictions from various Monte Carlo event generators. Among those considered, PYTHIA8 and POWHEG+PYTHIA8 provide the best description of the measured observables. The obtained results can provide guidance on tuning the generators.
Permanent Link: http://hdl.handle.net/11104/0331141
File Download Size Commentary Version Access 0557035.pdf 0 3.3 MB Open Access - CC licence Publisher’s postprint open-access
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