Measurement of D+s production and nuclear modification factor in Pb-Pb collisions at √sNN=2.76 TeV

Adam, J.; ...; Antičić, Tome; ...; Erhardt, Filip; ...; Gotovac, Sven; ...; Mudnić, Eugen; ...; Planinić, Mirko; ...; Poljak, Nikola; ...; Simatović, Goran; ...; Utrobičić, Antonija; ...; Vicković, Linda; ...; Zyzak, M.

doi:10.1007/JHEP03(2016)082

Pregled bibliografske jedinice broj: 860806

Measurement of D+s production and nuclear modification factor in Pb-Pb collisions at √sNN=2.76 TeV

(ALICE Collaboration) Adam, J.; ...; Antičić, Tome; ...; Erhardt, Filip; ...; Gotovac, Sven; ...; Mudnić, Eugen; ... et al.

Measurement of D+s production and nuclear modification factor in Pb-Pb collisions at √sNN=2.76 TeV // The Journal of high energy physics, 2016 (2016), 3; 082, 33 doi:10.1007/JHEP03(2016)082 (međunarodna recenzija, članak, znanstveni)

CROSBI ID: 860806 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Measurement of D+s production and nuclear modification factor in Pb-Pb collisions at √sNN=2.76 TeV

Autori
Adam, J. ; ... ; Antičić, Tome ; ... ; Erhardt, Filip ; ... ; Gotovac, Sven ; ... ; Mudnić, Eugen ; ... ; Planinić, Mirko ; ... ; Poljak, Nikola ; ... ; Simatović, Goran ; ... ; Utrobičić, Antonija ; ... ; Vicković, Linda ; ... ; Zyzak, M.

Kolaboracija
ALICE Collaboration

Izvornik
The Journal of high energy physics (1126-6708) 2016 (2016), 3; 082, 33

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

Ključne riječi
D-meson ; nuclear modification factor ; lead-lead

Sažetak
The production of prompt D+s mesons was measured for the first time in collisions of heavy nuclei with the ALICE detector at the LHC. The analysis was performed on a data sample of Pb-Pb collisions at a centre-of-mass energy per nucleon pair, √sNN, of 2.76 TeV in two different centrality classes, namely 0-10% and 20-50%. D+s mesons and their antiparticles were reconstructed at mid-rapidity from their hadronic decay channel D+s→ϕπ+, with ϕ→K−K+, in the transverse momentum intervals 4< pT< 12 GeV/c and 6< pT< 12 GeV/c for the 0-10% and 20- 50% centrality classes, respectively. The nuclear modification factor RAA was computed by comparing the pT-differential production yields in Pb-Pb collisions to those in proton-proton (pp) collisions at the same energy. This pp reference was obtained using the cross section measured at √s=7 TeV and scaled to √s=2.76 TeV. The RAA of D+s mesons was compared to that of non-strange D mesons in the 10% most central Pb-Pb collisions. At high pT (8< pT< 12 GeV/c) a suppression of the D+s-meson yield by a factor of about three, compatible within uncertainties with that of non- strange D mesons, is observed. At lower pT (4< pT< 8 GeV/c) the values of the D+s-meson RAA are larger than those of non-strange D mesons, although compatible within uncertainties. The production ratios D+s/D0 and D+s\D+ were also measured in Pb-Pb collisions and compared to their values in proton-proton collisions.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA

Ustanove:
Fakultet elektrotehnike, strojarstva i brodogradnje, Split,
Institut "Ruđer Bošković", Zagreb,
Prirodoslovno-matematički fakultet, Zagreb

Profili:

Filip Erhardt (autor)