Centrality dependence of charged particle production at large transverse momentum in Pb–Pb collisions at sqrt(s_NN)=2.76 TeV
Articolo
Data di Pubblicazione:
2013
Abstract:
The inclusive transverse momentum (pT) distributions of primary charged particles are measured in the pseudo-rapidity range |η| < 0.8 as a function of event centrality in Pb–Pb collisions at √sNN = 2.76 TeV with ALICE at the LHC. The data are presented in the pT range 0.15 < pT < 50 GeV/c for nine centrality intervals from 70–80% to 0–5%. The results in Pb–Pb are presented in terms of the nuclear modification factor RAA using a pp reference spectrum measured at the same collision energy. We observe that the suppression of high-pT particles strongly depends on event centrality. The yield is most suppressed in central collisions (0–5%) with RAA ≈ 0.13 at pT = 6–7 GeV/c. Above pT = 7 GeV/c, there is a significant rise in the nuclear modification factor, which reaches RAA ≈ 0.4 for pT > 30 GeV/c. In peripheral collisions (70–80%), only moderate suppression (RAA =0.6–0.7) and a weak pT dependence is observed. The measured nuclear modification factors are compared to other measurements and model calculations.
Tipologia CRIS:
03A-Articolo su Rivista
Elenco autori:
B. Abelev;J. Adam;D. Adamová;A.M. Adare;M.M. Aggarwal;G. Aglieri Rinella;A.G. Agocs;A. Agostinelli;S. Aguilar Salazar;Z. Ahammed;N. Ahmad;A. Ahmad Masoodi;S.A. Ahn;S.U. Ahn;A. Akindinov;D. Aleksandrov;B. Alessandro;R. Alfaro Molina;A. Alici;A. Alkin;E. Almaráz Aviña;J. Alme;T. Alt;V. Altini;S. Altinpinar;I. Altsybeev;C. Andrei;A. Andronic;V. Anguelov;J. Anielski;C. Anson;T. Antičić;F. Antinori;P. Antonioli;L. Aphecetche;H. Appelshäuser;N. Arbor;S. Arcelli;A. Arend;N. Armesto;R. Arnaldi;T. Aronsson;I.C. Arsene;M. Arslandok;A. Asryan;A. Augustinus;R. Averbeck;T.C. Awes;J. Äystö;M.D. Azmi;M. Bach;A. Badalà;Y.W. Baek;R. Bailhache;R. Bala;R. Baldini Ferroli;A. Baldisseri;A. Baldit;F. Baltasar Dos Santos Pedrosa;J. Bán;R.C. Baral;R. Barbera;F. Barile;G.G. Barnaföldi;L.S. Barnby;V. Barret;J. Bartke;M. Basile;N. Bastid;S. Basu;B. Bathen;G. Batigne;B. Batyunya;C. Baumann;I.G. Bearden;H. Beck;N.K. Behera;I. Belikov;F. Bellini;R. Bellwied;E. Belmont-Moreno;G. Bencedi;S. Beole;I. Berceanu;A. Bercuci;Y. Berdnikov;D. Berenyi;A.A.E. Bergognon;D. Berzano;L. Betev;A. Bhasin;A.K. Bhati;J. Bhom;L. Bianchi;N. Bianchi;C. Bianchin;J. Bielčík;J. Bielčíková;A. Bilandzic;S. Bjelogrlic;F. Blanco;F. Blanco;D. Blau;C. Blume;M. Boccioli;N. Bock;S. Böttger;A. Bogdanov;H. Bøggild;M. Bogolyubsky;L. Boldizsár;M. Bombara;J. Book;H. Borel;A. Borissov;S. Bose;F. Bossú;M. Botje;E. Botta;B. Boyer;E. Braidot;P. Braun-Munzinger;M. Bregant;T. Breitner;T.A. Browning;M. Broz;R. Brun;E. Bruna;G.E. Bruno;D. Budnikov;H. Buesching;S. Bufalino;O. Busch;Z. Buthelezi;D. Caballero Orduna;D. Caffarri;X. Cai;H. Caines;E. Calvo Villar;P. Camerini;V. Canoa Roman;G. Cara Romeo;F. Carena;W. Carena;N. Carlin Filho;F. Carminati;A. Casanova Díaz;J. Castillo Castellanos;J.F. Castillo Hernandez;E.A.R. Casula;V. Catanescu;C. Cavicchioli;C. Ceballos Sanchez;J. Cepila;P. Cerello;B. Chang;S. Chapeland;J.L. Charvet;S. Chattopadhyay;S. Chattopadhyay;I. Chawla;M. Cherney;C. Cheshkov;B. Cheynis;V. Chibante Barroso;D.D. Chinellato;P. Chochula;M. Chojnacki;S. Choudhury;P. Christakoglou;C.H. Christensen;P. Christiansen;T. Chujo;S.U. Chung;C. Cicalo;L. Cifarelli;F. Cindolo;J. Cleymans;F. Coccetti;F. Colamaria;D. Colella;G. Conesa Balbastre;Z. Conesa del Valle;P. Constantin;G. Contin;J.G. Contreras;T.M. Cormier;Y. Corrales Morales;P. Cortese;I. Cortés Maldonado;M.R. Cosentino;F. Costa;M.E. Cotallo;E. Crescio;P. Crochet;E. Cruz Alaniz;E. Cuautle;L. Cunqueiro;A. Dainese;H.H. Dalsgaard;A. Danu;D. Das;I. Das;K. Das;A. Dash;S. Dash;S. De;G.O.V. de Barros;A. De Caro;G. de Cataldo;J. de Cuveland;A. De Falco;D. De Gruttola;H. Delagrange;A. Deloff;V. Demanov;N. De Marco;E. Dénes;S. De Pasquale;A. Deppman;G. D Erasmo;R. de Rooij;M.A. Diaz Corchero;D. Di Bari;T. Dietel;C. Di Giglio;S. Di Liberto;A. Di Mauro;P. Di Nezza;R. Divià;Ø. Djuvsland;A. Dobrin;T. Dobrowolski;I. Domínguez;B. Dönigus;O. Dordic;O. Driga;A.K. Dubey;A. Dubla;L. Ducroux;P. Dupieux;M.R. Dutta Majumdar;A.K. Dutta Majumdar;D. Elia;D. Emschermann;H. Engel;B. Erazmus;H.A. Erdal;B. Espagnon;M. Estienne;S. Esumi;D. Evans;G. Eyyubova;D. Fabris;J. Faivre;D. Falchieri;A. Fantoni;M. Fasel;R. Fearick;A. Fedunov;D. Fehlker;L. Feldkamp;D. Felea;B. Fenton-Olsen;G. Feofilov;A. Fernández Téllez;A. Ferretti;R. Ferretti;A. Festanti;J. Figiel;M.A.S. Figueredo;S. Filchagin;D. Finogeev;F.M. Fionda;E.M. Fiore;M. Floris;S. Foertsch;P. Foka;S. Fokin;E. Fragiacomo;A. Francescon;U. Frankenfeld;U. Fuchs;C. Furget;M. Fusco Girard;J.J. Gaardhøje;M. Gagliardi;A. Gago;M. Gallio;D.R. Gangadharan;P. Ganoti;C. Garabatos;E. Garcia-Solis;I. Garishvili;J. Gerhard;M. Germain;C. Geuna;A. Gheata;M. Gheata;B. Ghidini;P. Ghosh;P. Gianotti;M
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