Measurement of Prompt D^0, Λ^+c, and Σ _c^{;0,++};(2455) Production in Proton–Proton Collisions at √s = 13 TeV

Acharya, S.; ...; Erhardt, Filip; ...; Gotovac, Sven; ...; Jerčić, Marko; ...; Karatović, David; ...; Lončar, Petra; ...; Mudnić, Eugen; ...; Planinić, Mirko; ...; Poljak, Nikola; ...; Vicković, Linda; ...; Zurlo, N.

doi:10.1103/PhysRevLett.128.012001

Pregled bibliografske jedinice broj: 1229329

Measurement of Prompt D^0, Λ^+c, and Σ _c^{;0,++}; (2455) Production in Proton–Proton Collisions at √s = 13 TeV

(ALICE Collaboration) Acharya, S.; ...; Erhardt, Filip; ...; Gotovac, Sven; ...; Jerčić, Marko; ...; Karatović, David; ... et al.

Measurement of Prompt D^0, Λ^+c, and Σ _c^{;0,++}; (2455) Production in Proton–Proton Collisions at √s = 13 TeV // Physical Review Letters, 128 (2022), 012001, 13 doi:10.1103/PhysRevLett.128.012001 (međunarodna recenzija, pismo, znanstveni)

CROSBI ID: 1229329 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Measurement of Prompt D^0, Λ^+c, and Σ _c^{;0,++}; (2455) Production in Proton–Proton Collisions at √s = 13 TeV

Autori
Acharya, S. ; ... ; Erhardt, Filip ; ... ; Gotovac, Sven ; ... ; Jerčić, Marko ; ... ; Karatović, David ; ... ; Lončar, Petra ; ... ; Mudnić, Eugen ; ... ; Planinić, Mirko ; ... ; Poljak, Nikola ; ... ; Vicković, Linda ; ... ; Zurlo, N.

Kolaboracija
ALICE Collaboration

Izvornik
Physical Review Letters (0031-9007) 128 (2022); 012001, 13

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

Ključne riječi
hadron hadron, interaction ; p p, scattering ; cross section, ratio ; TeV ; GeV ; baryon ; transverse momentum ; isospin ; enhancement ; hadron ; Monte Carlo

Sažetak
The pT-differential production cross sections of prompt D0, Λc+, and Σc0, ++(2455) charmed hadrons are measured at midrapidity (|y|<0.5) in pp collisions at s=13 TeV. This is the first measurement of Σc0, ++ production in hadronic collisions. Assuming the same production yield for the three Σc0, +, ++ isospin states, the baryon-to- meson cross section ratios Σc0, +, ++/D0 and Λc+/D0 are calculated in the transverse momentum (pT) intervals 2<pT<12 and 1<pT<24 GeV/c. Values significantly larger than in e+e- collisions are observed, indicating for the first time that baryon enhancement in hadronic collisions also extends to the Σc. The feed-down contribution to Λc+ production from Σc0, +, ++ is also reported and is found to be larger than in e+e- collisions. The data are compared with predictions from event generators and other phenomenological models, providing a sensitive test of the different charm-hadronization mechanisms implemented in the models.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA

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

Profili:

David Karatović (autor)