Abstract

Inclusive transverse momentum spectra of primary charged particles in Pb-Pb collisions at root s(NN) = 2.76 TeV have been measured by the ALICE Collaboration at the LHC. The data are presented for central and peripheral collisions, corresponding to 0-5% and 70-80% of the hadronic Pb-Pb cross section. The measured charged particle spectra in |eta| < 0.8 and 0.3 < p(T) < 20 GeV/c are compared to the expectation in pp collisions at the same root s(NN), scaled by the number of underlying nucleon-nucleon collisions. The comparison is expressed in terms of the nuclear modification factor R-AA. The result indicates only weak medium effects (R-AA approximate to 0.7) in peripheral collisions. In central collisions, R-AA reaches a minimum of about 0.14 at p(T) = 6-7 GeV/c and increases significantly at larger p(T). The measured suppression of high-p(T) particles is stronger than that observed at lower collision energies, indicating that a very dense medium is formed in central Pb-Pb collisions at the LHC. (C) 2010 CERN. Published by Elsevier B.V. All rights reserved.

Autore Pugliese

• Mastroserio Annalisa

Tutti gli autori

• Aamodt K , Quintana Aa , Adamova D , Adare Am , Aggarwal Mm , Rinella Ga , Agocs Ag , Salazar Sa , Ahammed Z , Ahmad N , Masoodi Aa , Ahn Su , Akindinov A , Aleksandrov D , Alessandro B , Molina Ra , Alici A , Alkin A , Avina Ea , Alt T , Altini V , Altinpinar S , Altsybeev I , Andrei C , Andronic A , Anguelov V , Anson C , Anticic T , Antinori F , Antonioli P , Aphecetche L , Appelshauser H , Arbor N , Arcelli S , Arend A , Armesto N , Arnaldi R , Aronsson T , Arsene Ic , Asryan A , Augustinus A , Averbeck R , Awes Tc , Aysto J , Azmi Md , Bach M , Badala A , Baek Yw , Bagnasco S , Bailhache R , Bala R , Ferroli Rb , Baldisseri A , Baldit A , Ban J , Barbera R , Barile F , Barnafoldi Gg , Barnby Ls , Barret V , Bartke J , Basile M , Bastid N , Bathen B , Batigne G , Batyunya B , Baumann C , Bearden Ig , Beck H , Belikov I , Bellini F , Bellwied R , Belmont Moreno E , Beole S , Berceanu I , Bercuci A , Berdermann E , Berdnikov Y , Betev L , Bhasin A , Bhati Ak , Bianchi L , Bianchi N , Bianchin C , Bielcik J , Bielcikova J , Bilandzic A , Biolcati E , Blanc A , Blanco F , Blanco F , Blau D , Blume C , Boccioli M , Bock N , Bogdanov A , Boggild H , Bogolyubsky M , Boldizsar L , Bombara M , Bombonati C , Book J , Borel H , Bortolin C , Bose S , Bossu F , Botje M , Bottger S , Boyer B , Braun Munzinger P , Bravina L , Bregant M , Breitner T , Broz M , Brun R , Bruna E , Bruno Ge , Budnikov D , Buesching H , Busch O , Buthelezi Z , Caffarri D , Cai X , Caines H , Villar Ec , Camerini P , Roman Vc , Romeo Gc , Carena F , Carena W , Carminati F , Diaz Ac , Caselle M , Castellanos Jc , Catanescu V , Cavicchioli C , Cerello P , Chang B , Chapeland S , Charvet Jl , Chattopadhyay S , Chattopadhyay S , Cherney M , Cheshkov C , Cheynis B , Chiavassa E , Barroso Vc , Chinellato Dd , Chochula P , Chojnacki M , Christakoglou P , Christensen Ch , Christiansen P , Chujo T , Cicalo C , Cifarelli L , Cindolo F , Cleymans J , Coccetti F , Coffin Jp , Coli S , Balbastre Gc , del Valle ZC , Constantin P , Contin G , Contreras Jg , Cormier Tm , Morales Yc , Maldonado Ic , Cortese P , Cosentino Mr , Costa F , Cotallo Me , Crescio E , Crochet P , Cuautle E , Cunqueiro L , Erasmo Gd , Dainese A , Dalsgaard Hh , Danu A , Das D , Das I , Dash A , Dash S , De S , Moregula Ad , de Barros GOV , De Caro A , de Cataldo G , de Cuveland J , De Falco A , De Gruttola D , De Marco N , De Pasquale S , De Remigis R , de Rooij R , Delagrange H , Mercado Yd , Dellacasa G , Deloff A , Demanov V , Denes E , Deppman A , Di Bari D , Di Giglio C , Di Liberto S , Di Mauro A , Di Nezza P , Dietel T , Divia R , Djuvsland O , Dobrin A , Dobrowolski T , Dominguez I , Donigus B , Dordic O , Driga O , Dubey Ak , Dubuisson J , Ducroux L , Dupieux P , Majumdar Akd , Majumdar Mrd , Elia D , Emschermann D , Engel H , Erdal Ha , Espagnon B , Estienne M , Esumi S , Evans D , Evrard S , Eyyubova G , Fabjan Cw , Fabris D , Faivre J , Falchieri D , Fantoni A , Fasel M , Fearick R , Fedunov A , Fehlker D , Fekete V , Felea D , Feofilov C , Tellez Af , Ferretti A , Ferretti R , Figueredo Mas , Filchagin S , Fini R , Finogeev D , Fionda Fm , Fiore Em , Floris M , Foertsch S , Foka P , Fokin S , Fragiacomo E , Fragkiadakis M , Frankenfeld U , Fuchs U , Furano F , Furget C , Girard Mf , Gaardhoje Jj , Gadrat S , Gagliardi M , Gago A , Gallio M , Ganoti P , Garabatos C , Gemme R , Gerhard J , Germain M , Geuna C , Gheata A , Gheata M , Ghidini B , Ghosh P , Girard Mr , Giraudo G , Giubellino P , Gladysz Dziadus E , Glassel P , Gomez R , Gonzalez Trueba LH , Gonzalez Zamora P , Santos Hg , Gorbunov S , Gotovac S , Grabski V , Grajcarek R , Grelli A , Grigoras A , Grigoras C , Grigoriev V , Grigoryan A , Grigoryan S , Grinyov B , Grion N , Gros P , Grosse Oetringhaus JF , Grossiord Jy , Grosso R , Guber F , Guernane R , Gutierrez Cg , Guerzoni B , Gulbrandsen K , Gunji T , Gupta A , Gupta R , Gutbrod H , Haaland O , Hadjidakis C , Haiduc M , Hamagaki H , Hamar G , Harris Jw , Hartig M , Hasch

Titolo volume/Rivista

PHYSICS LETTERS. SECTION B

Anno di pubblicazione

2011

ISSN

0370-2693

ISBN

Non Disponibile

Numero di citazioni Wos

378

Ultimo Aggiornamento Citazioni

Non Disponibile

Numero di citazioni Scopus

372

Ultimo Aggiornamento Citazioni

Non Disponibile

Settori ERC

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Codici ASJC

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