Measurement of beauty and charm production in pp collisions at √s  = 5.02 TeV via non-prompt and prompt D mesons

Acharya, S.; ...; Gotovac, S.; ...; Jercic, M.; ...; ...; Karatovic, D.; ...; Loncar, P.; ...; Mudnic, E.; ...; Planinic, M.; ...; Poljak, N.; ...; Vickovic, L.; ...; Zurlo, N.

doi:10.1007/jhep05(2021)220

Pregled bibliografske jedinice broj: 1134063

Measurement of beauty and charm production in pp collisions at √s = 5.02 TeV via non-prompt and prompt D mesons

(ALICE Collaboration) Acharya, S.; ...; Gotovac, S.; ...; Jercic, M.; ...; ...; Karatovic, D.; ...; Loncar, P. et al.

Measurement of beauty and charm production in pp collisions at √s = 5.02 TeV via non-prompt and prompt D mesons // Journal of High Energy Physics, 2021 (2021), 5; 220, 42 doi:10.1007/jhep05(2021)220 (međunarodna recenzija, članak, znanstveni)

CROSBI ID: 1134063 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Measurement of beauty and charm production in pp collisions at √s = 5.02 TeV via non-prompt and prompt D mesons

Autori
Acharya, S. ; ... ; Gotovac, S. ; ... ; Jercic, M. ; ... ; ... ; Karatovic, D. ; ... ; Loncar, P. ; ... ; Mudnic, E. ; ... ; Planinic, M. ; ... ; Poljak, N. ; ... ; Vickovic, L. ; ... ; Zurlo, N.

Kolaboracija
ALICE Collaboration

Izvornik
Journal of High Energy Physics (1126-6708) 2021 (2021), 5; 220, 42

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Heavy Ion Experiments ; quantum chromodynamics: perturbation theory ; charm: production ; pp: scattering ; rapidity ; fragmentation ; strange meson ; heavy quark ; ALICE ; experimental results

Sažetak
The pT-differential production cross sections of prompt and non-prompt (produced in beauty- hadron decays) D mesons were measured by the ALICE experiment at midrapidity (|y| < 0.5) in proton– proton collisions at √s = 5.02 TeV. The data sample used in the analysis corresponds to an integrated luminosity of (19.3 ± 0.4) nb−1 . D mesons were reconstructed from their decays D0 → K−π+, D+ → K−π+π+, and D+s → φπ+ → K−K+π + and their charge conjugates. Compared to previous measurements in the same rapidity region, the cross sections of prompt D+ and D+ s mesons have an extended pT coverage and total uncertainties reduced by a factor ranging from 1.05 to 1.6, depending on pT, allowing for a more precise determination of their pT integrated cross sections. The results are well described by perturbative QCD calculations. The fragmentation fraction of heavy quarks to strange mesons divided by the one to non- strange mesons, fs/(fu + fd), is compatible for charm and beauty quarks and with previous measurements at different centre-of-mass energies and collision systems. The bb production cross section per rapidity unit at midrapidity, estimated from non-prompt D-meson measurements, is dσbb/dy||y|<0.5 = 34.5±2.4(stat)+4.7−2.9(tot. syst) µb. It is compatible with previous measurements at the same centre-of-mass energy and with the cross section predicted by perturbative QCD calculations.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA

Ustanove:
Fakultet elektrotehnike, strojarstva i brodogradnje, Split,
Prirodoslovno-matematički fakultet, Zagreb

Profili:

David Karatović (autor)