Measurement of jet fragmentation into charged particles in pp and PbPb collisions at sqrt{s_NN = 2.76 TeV
Articolo
Data di Pubblicazione:
2012
Abstract:
Jet fragmentation in pp and PbPb collisions at a centre-of-mass energy of
2.76 TeV per nucleon pair was studied using data collected with the CMS detector at the
LHC. Fragmentation functions are constructed using charged-particle tracks with transverse
momenta pT > 4 GeV/c for dijet events with a leading jet of pT > 100 GeV/c. The
fragmentation functions in PbPb events are compared to those in pp data as a function of
collision centrality, as well as dijet-pT imbalance. Special emphasis is placed on the most
central PbPb events including dijets with unbalanced momentum, indicative of energy loss
of the hard scattered parent partons. The fragmentation patterns for both the leading and
subleading jets in PbPb collisions agree with those seen in pp data at 2.76 TeV. The results
provide evidence that, despite the large parton energy loss observed in PbPb collisions, the
partition of the remaining momentum within the jet cone into high-pT particles is not
strongly modified in comparison to that observed for jets in vacuum.
Tipologia CRIS:
03A-Articolo su Rivista
Elenco autori:
S. Chatrchyan;V. Khachatryan;A. M. Sirunyan;A. Tumasyan;W. Adam;T. Bergauer;M. Dragicevic;J. Erö;C. Fabjan;M. Friedl;R. Frühwirth;V. M. Ghete;J. Hammer;N. Hörmann;J. Hrubec;M. Jeitler;W. Kiesenhofer;V. Knünz;M. Krammer;D. Liko;I. Mikulec;M. Pernicka;B. Rahbaran;C. Rohringer;H. Rohringer;R. Schöfbeck;J. Strauss;A. Taurok;P. Wagner;W. Waltenberger;G. Walzel;E. Widl;C.-E. Wulz;V. Mossolov;N. Shumeiko;J. Suarez Gonzalez;S. Bansal;T. Cornelis;E. A. Wolf;X. Janssen;S. Luyckx;T. Maes;L. Mucibello;S. Ochesanu;B. Roland;R. Rougny;M. Selvaggi;Z. Staykova;H. Haevermaet;P. Mechelen;N. Remortel;A. Spilbeeck;F. Blekman;S. Blyweert;J. D’Hondt;R. Gonzalez Suarez;A. Kalogeropoulos;M. Maes;A. Olbrechts;W. Doninck;P. Mulders;G. P. Onsem;I. Villella;O. Charaf;B. Clerbaux;G. Lentdecker;V. Dero;A. P. R. Gay;T. Hreus;A. Léonard;P. E. Marage;T. Reis;L. Thomas;C. Vander Velde;P. Vanlaer;J. Wang;V. Adler;K. Beernaert;A. Cimmino;S. Costantini;G. Garcia;M. Grunewald;B. Klein;J. Lellouch;A. Marinov;J. Mccartin;A. A. Ocampo Rios;D. Ryckbosch;N. Strobbe;F. Thyssen;M. Tytgat;L. Vanelderen;P. Verwilligen;S. Walsh;E. Yazgan;N. Zaganidis;S. Basegmez;G. Bruno;R. Castello;A. Caudron;L. Ceard;C. Delaere;T. Pree;D. Favart;L. Forthomme;A. Giammanco;J. Hollar;V. Lemaitre;J. Liao;O. Militaru;C. Nuttens;D. Pagano;L. Perrini;A. Pin;K. Piotrzkowski;N. Schul;J. M. Vizan Garcia;N. Beliy;T. Caebergs;E. Daubie;G. H. Hammad;G. A. Alves;M. Correa Martins;D. Jesus Damiao;T. Martins;M. E. Pol;M. H. G. Souza;W. L. Aldá;W. Carvalho;A. Custódio;E. M. Costa;C. Oliveira Martins;S. Fonseca Souza;D. Matos Figueiredo;L. Mundim;H. Nogima;V. Oguri;W. L. Prado Silva;A. Santoro;L. Soares Jorge;A. Sznajder;C. A. Bernardes;F. A. Dias;T. R. Fernandez Perez Tomei;E. M. Gregores;C. Lagana;F. Marinho;P. G. Mercadante;S. F. Novaes;Sandra S. Padula;V. Genchev;P. Iaydjiev;S. Piperov;M. Rodozov;S. Stoykova;G. Sultanov;V. Tcholakov;R. Trayanov;M. Vutova;A. Dimitrov;R. Hadjiiska;V. Kozhuharov;L. Litov;B. Pavlov;P. Petkov;J. G. Bian;G. M. Chen;H. S. Chen;C. H. Jiang;D. Liang;S. Liang;X. Meng;J. Tao;J. Wang;X. Wang;Z. Wang;H. Xiao;M. Xu;J. Zang;Z. Zhang;C. Asawatangtrakuldee;Y. Ban;S. Guo;Y. Guo;W. Li;S. Liu;Y. Mao;S. J. Qian;H. Teng;S. Wang;B. Zhu;W. Zou;C. Avila;J. P. Gomez;B. Gomez Moreno;A. F. Osorio Oliveros;J. C. Sanabria;N. Godinovic;D. Lelas;R. Plestina;D. Polic;I. Puljak;Z. Antunovic;M. Kovac;V. Brigljevic;S. Duric;K. Kadija;J. Luetic;S. Morovic;A. Attikis;M. Galanti;G. Mavromanolakis;J. Mousa;C. Nicolaou;F. Ptochos;P. A. Razis;M. Finger;M. Finger;Y. Assran;S. Elgammal;A. Ellithi Kamel;S. Khalil;M. A. Mahmoud;A. Radi;M. Kadastik;M. Müntel;M. Raidal;L. Rebane;A. Tiko;V. Azzolini;P. Eerola;G. Fedi;M. Voutilainen;J. Härkönen;A. Heikkinen;V. Karimäki;R. Kinnunen;M. J. Kortelainen;T. Lampén;K. Lassila-Perini;S. Lehti;T. Lindén;P. Luukka;T. Mäenpää;T. Peltola;E. Tuominen;J. Tuominiemi;E. Tuovinen;D. Ungaro;L. Wendland;K. Banzuzi;A. Korpela;T. Tuuva;M. Besancon;S. Choudhury;M. Dejardin;D. Denegri;B. Fabbro;J. L. Faure;F. Ferri;S. Ganjour;A. Givernaud;P. Gras;G. Hamel Monchenault;P. Jarry;E. Locci;J. Malcles;L. Millischer;A. Nayak;J. Rander;A. Rosowsky;I. Shreyber;M. Titov;S. Baffioni;F. Beaudette;L. Benhabib;L. Bianchini;M. Bluj;C. Broutin;P. Busson;C. Charlot;N. Daci;T. Dahms;L. Dobrzynski;R. Granier Cassagnac;M. Haguenauer;P. Miné;C. Mironov;M. Nguyen;C. Ochando;P. Paganini;D. Sabes;R. Salerno;Y. Sirois;C. Veelken;A. Zabi;J.-L. Agram;J. Andrea;D. Bloch;D. Bodin;J.-M. Brom;M. Cardaci;E. C. Chabert;C. Collard;E. Conte;F. Drouhin;C. Ferro;J.-C. Fontaine;D. Gelé;U. Goerlach;P. Juillot;M. Karim;A.-C. Bihan;P. Hove;F. Fassi;D. Mercier;S. Beaucero
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