Pion–kaon femtoscopy and the lifetime of the hadronic phase in Pb−Pb collisions at √sNN=2.76 TeV

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

doi:10.1016/j.physletb.2020.136030

Pregled bibliografske jedinice broj: 1140126

Pion–kaon femtoscopy and the lifetime of the hadronic phase in Pb−Pb collisions at √sNN=2.76 TeV

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

Pion–kaon femtoscopy and the lifetime of the hadronic phase in Pb−Pb collisions at √sNN=2.76 TeV // Physics Letters B, 813 (2021), 136030, 13 doi:10.1016/j.physletb.2020.136030 (međunarodna recenzija, članak, znanstveni)

CROSBI ID: 1140126 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Pion–kaon femtoscopy and the lifetime of the hadronic phase in Pb−Pb collisions at √sNN=2.76 TeV

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
Physics Letters B (0370-2693) 813 (2021); 136030, 13

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

Ključne riječi
heavy ion: scattering ; emission: asymmetry ; hadronization: statistical ; hadronization: model ; hydrodynamics: viscosity ; model: hydrodynamics ; pi K ; CERN LHC Coll ; correlation ; ALICE ; propagation ; lifetime ; experimental results ; 2760 GeV-cms/nucleon

Sažetak
In this paper, the first femtoscopic analysis of pion–kaon correlations at the LHC is reported. The analysis was performed on the Pb– Pb collision data at √sNN=2.76 TeV recorded with the ALICE detector. The non-identical particle correlations probe the spatio-temporal separation between sources of different particle species as well as the average source size of the emitting system. The sizes of the pion and kaon sources increase with centrality, and pions are emitted closer to the centre of the system and/or later than kaons. This is naturally expected in a system with strong radial flow and is qualitatively reproduced by hydrodynamic models. ALICE data on pion–kaon emission asymmetry are consistent with (3+1)- dimensional viscous hydrodynamics coupled to a statistical hadronisation model, resonance propagation, and decay code THERMINATOR 2 calculation, with an additional time delay between 1 and 2 fm/c for kaons. The delay can be interpreted as evidence for a significant hadronic rescattering phase in heavy-ion collisions at the LHC.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA

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

Profili:

David Karatović (autor)