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One-dimensional pion, kaon, and proton femtoscopy in Pb-Pb collisions at sNN−−−√=2.76 TeV (CROSBI ID 226703)

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(ALICE Collaboration) Adam, J. ; Antičić, Tome ; Erhardt, Filip ; Gotovac, Sven ; Mudnić, Eugen ; Planinić, Mirko ; Poljak, Nikola ; Simatović, Goran ; Utrobičić, Antonija ; Vicković, Linda et al. One-dimensional pion, kaon, and proton femtoscopy in Pb-Pb collisions at sNN−−−√=2.76 TeV // Physical review. C, Nuclear physics, 92 (2015), 5; 054908, 15. doi: 10.1103/PhysRevC.92.054908

Podaci o odgovornosti

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

ALICE Collaboration

engleski

One-dimensional pion, kaon, and proton femtoscopy in Pb-Pb collisions at sNN−−−√=2.76 TeV

The size of the particle emission region in high-energy collisions can be deduced using the femtoscopic correlations of particle pairs at low relative momentum. Such correlations arise due to quantum statistics and Coulomb and strong final state interactions. In this paper, results are presented from femtoscopic analyses of π±π±, K±K±, K0SK0S, pp, and p¯p¯ correlations from Pb-Pb collisions at sNN−−−√=2.76 TeV by the ALICE experiment at the LHC. One-dimensional radii of the system are extracted from correlation functions in terms of the invariant momentum difference of the pair. The comparison of the measured radii with the predictions from a hydrokinetic model is discussed. The pion and kaon source radii display a monotonic decrease with increasing average pair transverse mass mT which is consistent with hydrodynamic model predictions for central collisions. The kaon and proton source sizes can be reasonably described by approximate mT scaling.

bose-einstein correlations ; heavy-ion collisions ; coulomb corrections ; pp ; interferometry ; particles ; energy ; radii ; alice ; star ; pion ; kaon ; proton ; femtoscopy ; Pb-Pb ; 2.76 TeV

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Podaci o izdanju

92 (5)

2015.

054908

15

objavljeno

0556-2813

1089-490X

10.1103/PhysRevC.92.054908

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Fizika

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