Neutral pion and η meson production in p-Pb collisions at √sNN=5.02 TeV

Acharya, S.; ...; Antičić, Tome; ...; Erhardt, Filip; ...; Gotovac, Sven; ...; Jerčić, Marko; ...; Lončar, Petra; ...; Mudnić, Eugen; ...; Planinić, Mirko; ...; Poljak, Nikola; ...; Simatović, Goran; ...; Utrobičić, Antonija; ...; Vicković, Linda; ...; Zou, S.

doi:10.1140/epjc/s10052-018-6013-8

Pregled bibliografske jedinice broj: 957416

Neutral pion and η meson production in p-Pb collisions at √sNN=5.02 TeV

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

Neutral pion and η meson production in p-Pb collisions at √sNN=5.02 TeV // European physical journal C : particles and fields, 78 (2018), 8; 624, 34 doi:10.1140/epjc/s10052-018-6013-8 (međunarodna recenzija, članak, znanstveni)

CROSBI ID: 957416 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Neutral pion and η meson production in p-Pb collisions at √sNN=5.02 TeV

Autori
Acharya, S. ; ... ; Antičić, Tome ; ... ; Erhardt, Filip ; ... ; Gotovac, Sven ; ... ; Jerčić, Marko ; ... ; Lončar, Petra ; ... ; Mudnić, Eugen ; ... ; Planinić, Mirko ; ... ; Poljak, Nikola ; ... ; Simatović, Goran ; ... ; Utrobičić, Antonija ; ... ; Vicković, Linda ; ... ; Zou, S.

Kolaboracija
ALICE Collaboration

Izvornik
European physical journal C : particles and fields (1434-6044) 78 (2018), 8; 624, 34

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

Ključne riječi
meson: inclusive production ; meson: production ; parton: energy loss ; photon: transition ; heavy ion: scattering ; pp: scattering ; transverse momentum ; CERN LHC Coll ; quantum chromodynamics ; nucleus nucleus ; diffraction ; suppression ; calorimeter ; p nucleus ; CERN Lab ; scaling ; ALICE

Sažetak
Neutral pion and η meson invariant differential yields were measured in non-single diffractive p–Pb collisions at sNN‾‾‾‾√ = 5.02 TeV with the ALICE experiment at the CERN LHC. The analysis combines results from three complementary photon measurements, utilizing the PHOS and EMCal calorimeters and the Photon Conversion Method. The invariant differential yields of π0 and η meson inclusive production are measured near mid-rapidity in a broad transverse momentum range of 0.3<pT<20 GeV/c and 0.7<pT<20 GeV/c , respectively. The measured η/π0 ratio increases with pT and saturates for pT > 4 GeV/c at 0.483±0.015stat±0.015sys . A deviation from mT scaling is observed for pT< 2 GeV/c . The measured η/π0 ratio is consistent with previous measurements from proton- nucleus and pp collisions over the full pT range. The measured η/π0 ratio at high pT also agrees within uncertainties with measurements from nucleus–nucleus collisions. The π0 and η yields in p–Pb relative to the scaled pp interpolated reference, RpPb , are presented for 0.3<pT< 20 GeV/c and 0.7<pT< 20 GeV/c , respectively. The results are compared with theoretical model calculations. The values of RpPb are consistent with unity for transverse momenta above 2 GeV/c . These results support the interpretation that the suppressed yield of neutral mesons measured in Pb–Pb collisions at LHC energies is due to parton energy loss in the hot QCD medium.

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)