Differential cross sections of charged particles in inelastic pp collisions as a function of pT have been mea- sured at √s = 0.9, 2.76 and 7 TeV at the LHC. The pT spec- tra are compared to NLO-pQCD calculations. Though the differential cross section for an individual √s cannot be de- scribed by NLO-pQCD, the relative increase of cross section with √s is in agreement with NLO-pQCD. Based on these measurements and observations, procedures are discussed to construct pp reference spectra at √s = 2.76 and 5.02 TeV up to pT = 50 GeV/c as required for the calculation of the nuclear modification factor in nucleus–nucleus and proton– nucleus collisions.

Energy dependence of the transverse momentum distributions of charged particles in pp collisions measured by ALICE

BALA, RENU;BEOLE', Stefania;BERZANO, DARIO CARLO DOMENICO;BIANCHI, LIVIO;BOTTA, Elena;BRUNA, ELENA;BUFALINO, STEFANIA;CORRALES MORALES, YASSER;FERRETTI, Alessandro;GAGLIARDI, Martino;GALLIO, Mauro;INNOCENTI, GIAN MICHELE;MASERA, Massimo;MILANO, LEONARDO;OPPEDISANO, Chiara;RAMELLO, Luciano;RUSSO, RICCARDO;SITTA, Mario;VERCELLIN, Ermanno;
2013-01-01

Abstract

Differential cross sections of charged particles in inelastic pp collisions as a function of pT have been mea- sured at √s = 0.9, 2.76 and 7 TeV at the LHC. The pT spec- tra are compared to NLO-pQCD calculations. Though the differential cross section for an individual √s cannot be de- scribed by NLO-pQCD, the relative increase of cross section with √s is in agreement with NLO-pQCD. Based on these measurements and observations, procedures are discussed to construct pp reference spectra at √s = 2.76 and 5.02 TeV up to pT = 50 GeV/c as required for the calculation of the nuclear modification factor in nucleus–nucleus and proton– nucleus collisions.
2013
73
2662
2662
http://arxiv.org/abs/1307.1093
transverse momentum distribution; PP COLLISIONS
B. Abelev;J. Adam;D. Adamová;A. M. Adare;M. M. Aggarwal;G. Aglieri Rinella;M. Agnello;A. G. Agocs;A. Agostinelli;Z. Ahammed;N. Ahmad;A. Ahmad Masoodi;I. Ahmed;S. A. Ahn;S. U. Ahn;I. Aimo;S. Aiola;M. Ajaz;A. Akindinov;D. Aleksandrov;B. Alessandro;D. Alexandre;A. Alici;A. Alkin;J. Alme;T. Alt;V. Altini;S. Altinpinar;I. Altsybeev;C. Alves Garcia Prado;C. Andrei;A. Andronic;V. Anguelov;J. Anielski;T. Antičić;F. Antinori;P. Antonioli;L. Aphecetche;H. Appelshäuser;N. Arbor;S. Arcelli;N. Armesto;R. Arnaldi;T. Aronsson;I. C. Arsene;M. Arslandok;A. Augustinus;R. Averbeck;T. C. Awes;J. Äystö;M. D. Azmi;M. Bach;A. Badalà;Y. W. Baek;R. Bailhache;R. Bala;A. Baldisseri;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;P. C. Batzing;C. Baumann;I. G. Bearden;H. Beck;C. Bedda;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;R. A. Bertens;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;F. Bock;A. Bogdanov;H. Bøggild;M. Bogolyubsky;L. Boldizsár;M. Bombara;J. Book;H. Borel;A. Borissov;J. Bornschein;M. Botje;E. Botta;S. Böttger;E. Braidot;P. Braun-Munzinger;M. Bregant;T. Breitner;T. A. Broker;T. A. Browning;M. Broz;R. Brun;E. Bruna;G. E. Bruno;D. Budnikov;H. Buesching;S. Bufalino;P. Buncic;O. Busch;Z. Buthelezi;D. Caffarri;X. Cai;H. Caines;A. Caliva;E. Calvo Villar;P. Camerini;V. Canoa Roman;G. Cara Romeo;F. Carena;W. Carena;F. Carminati;A. Casanova Díaz;J. Castillo Castellanos;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;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. Colamaria;D. Colella;A. Collu;M. Colocci;G. Conesa Balbastre;Z. Conesa del Valle;M. E. Connors;G. Contin;J. G. Contreras;T. M. Cormier;Y. Corrales Morales;P. Cortese;I. Cortés Maldonado;M. R. Cosentino;F. Costa;P. Crochet;R. Cruz Albino;E. Cuautle;L. Cunqueiro;A. Dainese;R. Dang;A. Danu;K. Das;D. Das;I. Das;A. Dash;S. Dash;S. De;H. Delagrange;A. Deloff;E. Dénes;A. Deppman;G. O. V. Barros;A. Caro;G. Cataldo;J. Cuveland;A. Falco;D. Gruttola;N. Marco;S. Pasquale;R. Rooij;M. A. Diaz Corchero;T. Dietel;R. Divià;D. Bari;C. Giglio;S. Liberto;A. Mauro;P. Nezza;Ø. Djuvsland;A. Dobrin;T. Dobrowolski;B. Dönigus;O. Dordic;A. K. Dubey;A. Dubla;L. Ducroux;P. Dupieux;A. K. Dutta Majumdar;G. D Erasmo;D. Elia;D. Emschermann;H. Engel;B. Erazmus;H. A. Erdal;D. Eschweiler;B. Espagnon;M. Estienne;S. Esumi;D. Evans;S. Evdokimov;G. Eyyubova;D. Fabris;J. Faivre;D. Falchieri;A. Fantoni;M. Fasel;D. Fehlker;L. Feldkamp;D. Felea;A. Feliciello;G. Feofilov;A. Fernández Téllez;E. G. Ferreiro;A. Ferretti;A. Festanti;J. Figiel;M. A. S. Figueredo;S. Filchagin;D. Finogeev;F. M. Fionda;E. M. Fiore;E. Floratos;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;C. Gargiulo;I. Garishvili;J. Gerhard;M. Germain;A. Gheata;M. Gheata;B. Ghidini;P. Ghosh;P. Gianotti;P. Giubellino;E. Gladysz-Dziadus;P. Glässel;L. Goerlich;R. Gomez;P. González-Zamora;S. Gorbunov;S. Gotovac;L. K. Graczykowski;R. Grajcarek;A. Grelli;C. Grigoras;A. Grigoras;V. Grigoriev;A. Grigoryan;S. Grigoryan;B. Grinyov;N. Grion;J. F. Grosse-Oetringhaus;J.-Y. Grossiord;R. Grosso;F. Guber;R. Guernane;B. Guerzoni;M. Guilbaud;K. Gulbrandsen;H. Gulkanyan;T. Gunji;A. Gupta;R. Gupta;K. H. Khan;R. Haake;Ø. Haaland;C. Hadjidakis;M. Haiduc;H. Hamagaki;G. Hamar;L. D. Hanratty;A. Hansen;J. W. Harris;A. Harton;D. Hatzifotiadou;S. Hayashi;A. Hayrapetyan;S. T. Heckel;M. Heide;H. Helstrup;A. Herghelegiu;G. Herrera Corral;N. Herrmann;B. A. Hess;K. F. Hetland;B. Hicks;B. Hippolyte;Y. Hori;P. Hristov;I. Hřivnáčová;M. Huang;T. J. Humanic;D. Hutter;D. S. Hwang;R. Ichou;R. Ilkaev;I. Ilkiv;M. Inaba;E. Incani;G. M. Innocenti;C. Ionita;M. Ippolitov;M. Irfan;V. Ivanov;M. Ivanov;O. Ivanytskyi;A. Jachołkowski;C. Jahnke;H. J. Jang;M. A. Janik;P. H. S. Y. Jayarathna;S. Jena;R. T. Jimenez Bustamante;P. G. Jones;H. Jung;A. Jusko;S. Kalcher;P. Kaliňák;T. Kalliokoski;A. Kalweit;J. H. Kang;V. Kaplin;S. Kar;A. Karasu Uysal;O. Karavichev;T. Karavicheva;E. Karpechev;A. Kazantsev;U. Kebschull;R. Keidel;B. Ketzer;S. A. Khan;M. M. Khan;P. Khan;A. Khanzadeev;Y. Kharlov;B. Kileng;S. Kim;D. W. Kim;D. J. Kim;B. Kim;T. Kim;M. Kim;M. Kim;J. S. Kim;S. Kirsch;I. Kisel;S. Kiselev;A. Kisiel;G. Kiss;J. L. Klay;J. Klein;C. Klein-Bösing;A. Kluge;M. L. Knichel;A. G. Knospe;M. K. Köhler;T. Kollegger;A. Kolojvari;V. Kondratiev;N. Kondratyeva;A. Konevskikh;V. Kovalenko;M. Kowalski;S. Kox;G. Koyithatta Meethaleveedu;J. Kral;I. Králik;F. Kramer;A. Kravčáková;M. Krelina;M. Kretz;M. Krivda;F. Krizek;M. Krus;E. Kryshen;M. Krzewicki;V. Kucera;Y. Kucheriaev;T. Kugathasan;C. Kuhn;P. G. Kuijer;I. Kulakov;J. Kumar;P. Kurashvili;A. B. Kurepin;A. Kurepin;A. Kuryakin;S. Kushpil;V. Kushpil;M. J. Kweon;Y. Kwon;P. Ladrón de Guevara;C. Lagana Fernandes;I. Lakomov;R. Langoy;C. Lara;A. Lardeux;S. L. Pointe;P. Rocca;R. Lea;M. Lechman;S. C. Lee;G. R. Lee;I. Legrand;J. Lehnert;R. C. Lemmon;M. Lenhardt;V. Lenti;I. León Monzón;P. Lévai;S. Li;J. Lien;R. Lietava;S. Lindal;V. Lindenstruth;C. Lippmann;M. A. Lisa;H. M. Ljunggren;D. F. Lodato;P. I. Loenne;V. R. Loggins;V. Loginov;D. Lohner;C. Loizides;K. K. Loo;X. Lopez;E. López Torres;G. Løvhøiden;X.-G. Lu;P. Luettig;M. Lunardon;J. Luo;G. Luparello;C. Luzzi;P. M. Jacobs;R. Ma;A. Maevskaya;M. Mager;D. P. Mahapatra;A. Maire;M. Malaev;I. Maldonado Cervantes;L. Malinina;D. Mal’Kevich;P. Malzacher;A. Mamonov;L. Manceau;V. Manko;F. Manso;V. Manzari;M. Marchisone;J. Mareš;G. V. Margagliotti;A. Margotti;A. Marín;C. Markert;M. Marquard;I. Martashvili;N. A. Martin;P. Martinengo;M. I. Martínez;G. Martínez García;J. Martin Blanco;Y. Martynov;A. Mas;S. Masciocchi;M. Masera;A. Masoni;L. Massacrier;A. Mastroserio;A. Matyja;J. Mazer;R. Mazumder;M. A. Mazzoni;F. Meddi;A. Menchaca-Rocha;J. Mercado Pérez;M. Meres;Y. Miake;K. Mikhaylov;L. Milano;J. Milosevic;A. Mischke;A. N. Mishra;D. Miśkowiec;C. Mitu;J. Mlynarz;B. Mohanty;L. Molnar;L. Montaño Zetina;M. Monteno;E. Montes;T. Moon;M. Morando;D. A. Moreira De Godoy;S. Moretto;A. Morreale;A. Morsch;V. Muccifora;E. Mudnic;S. Muhuri;M. Mukherjee;H. Müller;M. G. Munhoz;S. Murray;L. Musa;B. K. Nandi;R. Nania;E. Nappi;C. Nattrass;T. K. Nayak;S. Nazarenko;A. Nedosekin;M. Nicassio;M. Niculescu;B. S. Nielsen;S. Nikolaev;S. Nikulin;V. Nikulin;B. S. Nilsen;M. S. Nilsson;F. Noferini;P. Nomokonov;G. Nooren;A. Nyanin;A. Nyatha;J. Nystrand;H. Oeschler;S. K. Oh;S. Oh;L. Olah;J. Oleniacz;A. C. Oliveira Da Silva;J. Onderwaater;C. Oppedisano;A. Ortiz Velasquez;A. Oskarsson;J. Otwinowski;K. Oyama;Y. Pachmayer;M. Pachr;P. Pagano;G. Paić;F. Painke;C. Pajares;S. K. Pal;A. Palaha;A. Palmeri;V. Papikyan;G. S. Pappalardo;W. J. Park;A. Passfeld;D. I. Patalakha;V. Paticchio;B. Paul;T. Pawlak;T. Peitzmann;H. Pereira Da Costa;E. Pereira De Oliveira Filho;D. Peresunko;C. E. Pérez Lara;D. Perrino;W. Peryt;A. Pesci;Y. Pestov;V. Petráček;M. Petran;M. Petris;P. Petrov;M. Petrovici;C. Petta;S. Piano;M. Pikna;P. Pillot;O. Pinazza;L. Pinsky;N. Pitz;D. B. Piyarathna;M. Planinic;M. Płoskoń;J. Pluta;S. Pochybova;P. L. M. Podesta-Lerma;M. G. Poghosyan;B. Polichtchouk;N. Poljak;A. Pop;S. Porteboeuf-Houssais;V. Pospíšil;B. Potukuchi;S. K. Prasad;R. Preghenella;F. Prino;C. A. Pruneau;I. Pshenichnov;G. Puddu;V. Punin;J. Putschke;H. Qvigstad;A. Rachevski;A. Rademakers;J. Rak;A. Rakotozafindrabe;L. Ramello;S. Raniwala;R. Raniwala;S. S. Räsänen;B. T. Rascanu;D. Rathee;W. Rauch;A. W. Rauf;V. Razazi;K. F. Read;J. S. Real;K. Redlich;R. J. Reed;A. Rehman;P. Reichelt;M. Reicher;F. Reidt;R. Renfordt;A. R. Reolon;A. Reshetin;F. Rettig;J.-P. Revol;K. Reygers;L. Riccati;R. A. Ricci;T. Richert;M. Richter;P. Riedler;W. Riegler;F. Riggi;A. Rivetti;M. Rodríguez Cahuantzi;A. Rodriguez Manso;K. Røed;E. Rogochaya;S. Rohni;D. Rohr;D. Röhrich;R. Romita;F. Ronchetti;P. Rosnet;S. Rossegger;A. Rossi;P. Roy;C. Roy;A. J. Rubio Montero;R. Rui;R. Russo;E. Ryabinkin;A. Rybicki;S. Sadovsky;K. Šafařík;R. Sahoo;P. K. Sahu;J. Saini;H. Sakaguchi;S. Sakai;D. Sakata;C. A. Salgado;J. Salzwedel;S. Sambyal;V. Samsonov;X. Sanchez Castro;L. Šándor;A. Sandoval;M. Sano;G. Santagati;R. Santoro;D. Sarkar;E. Scapparone;F. Scarlassara;R. P. Scharenberg;C. Schiaua;R. Schicker;C. Schmidt;H. R. Schmidt;S. Schuchmann;J. Schukraft;M. Schulc;T. Schuster;Y. Schutz;K. Schwarz;K. Schweda;G. Scioli;E. Scomparin;R. Scott;P. A. Scott;G. Segato;I. Selyuzhenkov;J. Seo;S. Serci;E. Serradilla;A. Sevcenco;A. Shabetai;G. Shabratova;R. Shahoyan;S. Sharma;N. Sharma;K. Shigaki;K. Shtejer;Y. Sibiriak;S. Siddhanta;T. Siemiarczuk;D. Silvermyr;C. Silvestre;G. Simatovic;R. Singaraju;R. Singh;S. Singha;V. Singhal;B. C. Sinha;T. Sinha;B. Sitar;M. Sitta;T. B. Skaali;K. Skjerdal;R. Smakal;N. Smirnov;R. J. M. Snellings;C. Søgaard;R. Soltz;M. Song;J. Song;C. Soos;F. Soramel;M. Spacek;I. Sputowska;M. Spyropoulou-Stassinaki;B. K. Srivastava;J. Stachel;I. Stan;G. Stefanek;M. Steinpreis;E. Stenlund;G. Steyn;J. H. Stiller;D. Stocco;M. Stolpovskiy;P. Strmen;A. A. P. Suaide;M. A. Subieta Vásquez;T. Sugitate;C. Suire;M. Suleymanov;R. Sultanov;M. Šumbera;T. Susa;T. J. M. Symons;A. Szanto de Toledo;I. Szarka;A. Szczepankiewicz;M. Szymański;J. Takahashi;M. A. Tangaro;J. D. Tapia Takaki;A. Tarantola Peloni;A. Tarazona Martinez;A. Tauro;G. Tejeda Muñoz;A. Telesca;C. Terrevoli;A. Minasyan;J. Thäder;D. Thomas;R. Tieulent;A. R. Timmins;A. Toia;H. Torii;V. Trubnikov;W. H. Trzaska;T. Tsuji;A. Tumkin;R. Turrisi;T. S. Tveter;J. Ulery;K. Ullaland;J. Ulrich;A. Uras;G. M. Urciuoli;G. L. Usai;M. Vajzer;M. Vala;L. Valencia Palomo;P. Vande Vyvre;L. Vannucci;J. W. Hoorne;M. Leeuwen;A. Vargas;R. Varma;M. Vasileiou;A. Vasiliev;V. Vechernin;M. Veldhoen;M. Venaruzzo;E. Vercellin;S. Vergara;R. Vernet;M. Verweij;L. Vickovic;G. Viesti;J. Viinikainen;Z. Vilakazi;O. Villalobos Baillie;A. Vinogradov;L. Vinogradov;Y. Vinogradov;T. Virgili;Y. P. Viyogi;A. Vodopyanov;M. A. Völkl;S. Voloshin;K. Voloshin;G. Volpe;B. Haller;I. Vorobyev;D. Vranic;J. Vrláková;B. Vulpescu;A. Vyushin;B. Wagner;V. Wagner;J. Wagner;Y. Wang;Y. Wang;M. Wang;D. Watanabe;K. Watanabe;M. Weber;J. P. Wessels;U. Westerhoff;J. Wiechula;J. Wikne;M. Wilde;G. Wilk;J. Wilkinson;M. C. S. Williams;B. Windelband;M. Winn;C. Xiang;C. G. Yaldo;Y. Yamaguchi;H. Yang;P. Yang;S. Yang;S. Yano;S. Yasnopolskiy;J. Yi;Z. Yin;I.-K. Yoo;I. Yushmanov;V. Zaccolo;C. Zach;C. Zampolli;S. Zaporozhets;A. Zarochentsev;P. Závada;N. Zaviyalov;H. Zbroszczyk;P. Zelnicek;I. S. Zgura;M. Zhalov;F. Zhang;Y. Zhang;H. Zhang;X. Zhang;D. Zhou;Y. Zhou;F. Zhou;X. Zhu;J. Zhu;J. Zhu;H. Zhu;A. Zichichi;M. B. Zimmermann;A. Zimmermann;G. Zinovjev;Y. Zoccarato;M. Zynovyev;M. Zyzak
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