Title
Centrality dependence of the nuclear modification factor of charged pions, kaons, and protons in Pb-Pb collisions at s NN =2.76 TeV
Date Issued
25 March 2016
Access level
open access
Resource Type
journal article
Author(s)
Adam J.
Adamová D.
Aggarwal M.M.
Aglieri Rinella G.
Agnello M.
Agrawal N.
Ahammed Z.
Ahn S.U.
Aimo I.
Aiola S.
Ajaz M.
Akindinov A.
Alam S.N.
Aleksandrov D.
Alessandro B.
Alexandre D.
Alfaro Molina R.
Alici A.
Alkin A.
Almaraz J.R.M.
Alme J.
Alt T.
Altinpinar S.
Altsybeev I.
Alves Garcia Prado C.
Andrei C.
Andronic A.
Anguelov V.
Anielski J.
Antičić T.
Antinori F.
Antonioli P.
Aphecetche L.
Appelshäuser H.
Arcelli S.
Armesto N.
Arnaldi R.
Arsene I.C.
Arslandok M.
Audurier B.
Augustinus A.
Averbeck R.
Azmi M.D.
Bach M.
Badalà A.
Baek Y.W.
Bagnasco S.
Bailhache R.
Bala R.
Baldisseri A.
Baltasar Dos Santos Pedrosa F.
Baral R.C.
Barbano A.M.
Barbera R.
Barile F.
Barnaföldi G.G.
Barnby L.S.
Barret V.
Bartalini P.
Barth K.
Bartke J.
Bartsch E.
Basile M.
Bastid N.
Basu S.
Bathen B.
Batigne G.
Batista Camejo A.
Batyunya B.
Batzing P.C.
Bearden I.G.
Beck H.
Bedda C.
Behera N.K.
Belikov I.
Bellini F.
Bello Martinez H.
Bellwied R.
Belmont R.
Belmont-Moreno E.
Belyaev V.
Bencedi G.
Beole S.
Berceanu I.
Bercuci A.
Berdnikov Y.
Berenyi D.
Bertens R.A.
Berzano D.
Betev L.
Bhasin A.
Bhat I.R.
Bhati A.K.
Bhattacharjee B.
Bhom J.
Bianchi L.
Bianchi N.
Bianchin C.
Bielčík J.
Bielčíková J.
Publisher(s)
American Physical Society
Abstract
Transverse momentum (pT) spectra of pions, kaons, and protons up to pT=20GeV/c have been measured in Pb-Pb collisions at sNN=2.76TeV using the ALICE detector for six different centrality classes covering 0%-80%. The proton-to-pion and the kaon-to-pion ratios both show a distinct peak at pT≈3GeV/c in central Pb-Pb collisions that decreases for more peripheral collisions. For pT>10GeV/c, the nuclear modification factor is found to be the same for all three particle species in each centrality interval within systematic uncertainties of 10%-20%. This suggests there is no direct interplay between the energy loss in the medium and the particle species composition in the hard core of the quenched jet. For pT<10GeV/c, the data provide important constraints for models aimed at describing the transition from soft to hard physics.
Volume
93
Issue
3
Language
English
OCDE Knowledge area
Física de partículas, Campos de la Física
Scopus EID
2-s2.0-84963704506
Source
Physical Review C
ISSN of the container
24699985
Sponsor(s)
National Science Foundation - 1305280, 1307461 - NSF
Science and Technology Facilities Council - 1657698, 2014 STFC Nuclear Physics CG, ALICE, GRIDPP, ST/J000108/1, ST/L005670/1, ST/L005751/1, ST/M00158X/1, ST/M001598/1, ST/M001601/1, ST/M00340X/1, ST/N00261X/1 - STFC
Japan Society for the Promotion of Science - 15H03664, 25287048, 26610071 - JSPS
Sources of information:
Directorio de Producción Científica
Scopus