The inclusive production cross sections at for- ward rapidity of J/ψ , ψ (2S), Υ (1S) and Υ (2S) are measured in pp collisions at √s = 7 TeV with the ALICE detector at the LHC. The analysis is based on a data sample corre- sponding to an integrated luminosity of 1.35 pb−1. Quarko- nia are reconstructed in the dimuon-decay channel and the signal yields are evaluated by fitting the μ+μ− invariant mass distributions. The differential production cross sections are measured as a function of the transverse momentum pT and rapidity y, over the ranges 0 < pT < 20 GeV/c for J/ψ, 0 < pT < 12 GeV/c for all other resonances and for 2.5 < y < 4. The measured cross sections integrated over pT and y, and assuming unpolarized quarkonia, are: σJ/ψ = 6.69 ± 0.04 ± 0.63 μb, σψ(2S) = 1.13 ± 0.07 ± 0.19 μb, σΥ(1S) =54.2 ± 5.0±6.7nbandσΥ(2S) =18.4 ± 3.7 ± 2.9 nb, where the first uncertainty is statistical and the second one is systematic. The results are compared to measurements performed by other LHC experiments and to theoretical models.

Measurement of quarkonium production at forward rapidity in $$\mathbf {pp}$$ pp collisions at $$\mathbf {\sqrt{s}=7}~$$ s = 7 TeV

ARNALDI, Roberta;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;LATTUCA, ALESSANDRA;LEONCINO, MARCO;MASERA, Massimo;OPPEDISANO, Chiara;RAMELLO, Luciano;RIVETTI, Angelo;RUSSO, RICCARDO;SCOMPARIN, ENRICO;VERCELLIN, Ermanno;
2014-01-01

Abstract

The inclusive production cross sections at for- ward rapidity of J/ψ , ψ (2S), Υ (1S) and Υ (2S) are measured in pp collisions at √s = 7 TeV with the ALICE detector at the LHC. The analysis is based on a data sample corre- sponding to an integrated luminosity of 1.35 pb−1. Quarko- nia are reconstructed in the dimuon-decay channel and the signal yields are evaluated by fitting the μ+μ− invariant mass distributions. The differential production cross sections are measured as a function of the transverse momentum pT and rapidity y, over the ranges 0 < pT < 20 GeV/c for J/ψ, 0 < pT < 12 GeV/c for all other resonances and for 2.5 < y < 4. The measured cross sections integrated over pT and y, and assuming unpolarized quarkonia, are: σJ/ψ = 6.69 ± 0.04 ± 0.63 μb, σψ(2S) = 1.13 ± 0.07 ± 0.19 μb, σΥ(1S) =54.2 ± 5.0±6.7nbandσΥ(2S) =18.4 ± 3.7 ± 2.9 nb, where the first uncertainty is statistical and the second one is systematic. The results are compared to measurements performed by other LHC experiments and to theoretical models.
2014
74
2974
2974
QUARKONIUM PRODUCTION; forward rapidity; PP COLLISIONS
B. Abelev;J. Adam;D. Adamová;M. M. Aggarwal;M. Agnello;A. Agostinelli;N. Agrawal;Z. Ahammed;N. Ahmad;A. Ahmad Masoodi;I. Ahmed;S. U. Ahn;S. A. 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;M. D. Azmi;M. Bach;A. Badalà;Y. W. Baek;S. Bagnasco;R. Bailhache;R. Bala;A. Baldisseri;F. Baltasar Dos Santos Pedrosa;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;R. A. Bertens;D. Berzano;L. Betev;A. Bhasin;I. R. Bhat;A. K. Bhati;B. Bhattacharjee;J. Bhom;L. Bianchi;N. Bianchi;C. Bianchin;J. Bielčík;J. Bielčíková;A. Bilandzic;S. Bjelogrlic;F. Blanco;D. Blau;C. Blume;F. Bock;A. Bogdanov;H. Bøggild;M. Bogolyubsky;L. Boldizsár;M. Bombara;J. Book;H. Borel;A. Borissov;F. Bossú;M. Botje;E. Botta;S. Böttger;P. Braun-Munzinger;M. Bregant;T. Breitner;T. A. Broker;T. A. Browning;M. Broz;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;F. Carena;W. Carena;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;V. Chelnokov;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;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;D. Das;I. Das;K. Das;S. Das;A. Dash;S. Dash;S. De;H. Delagrange;A. Deloff;E. Dénes;G. D’Erasmo;A. De Caro;G. de Cataldo;J. de Cuveland;A. De Falco;D. De Gruttola;N. De Marco;S. De Pasquale;R. de Rooij;M. A. Diaz Corchero;T. Dietel;R. Divià;D. Di Bari;S. Di Liberto;A. Di Mauro;P. Di Nezza;Ø. Djuvsland;A. Dobrin;T. Dobrowolski;D. Domenicis Gimenez;B. Dönigus;O. Dordic;A. K. Dubey;A. Dubla;L. Ducroux;P. Dupieux;A. K. Dutta Majumdar;R. J. Ehlers;D. Elia;H. Engel;B. Erazmus;H. A. Erdal;D. Eschweiler;B. Espagnon;M. Esposito;M. Estienne;S. Esumi;D. Evans;S. Evdokimov;D. Fabris;J. Faivre;D. Falchieri;A. Fantoni;M. Fasel;D. Fehlker;L. Feldkamp;D. Felea;A. Feliciello;G. Feofilov;J. Ferencei;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. M. 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;S. K. Ghosh;P. Gianotti;P. Giubellino;E. Gladysz-Dziadus;P. Glässel;A. Gomez Ramirez;P. González-Zamora;S. Gorbunov;L. Görlich;S. Gotovac;L. K. Graczykowski;A. Grelli;A. Grigoras;C. 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;H. Hartmann;A. Harton;D. Hatzifotiadou;S. Hayashi;S. T. Heckel;M. Heide;H. Helstrup;A. Herghelegiu;G. Herrera Corral;B. A. Hess;K. F. Hetland;B. Hicks;B. Hippolyte;J. Hladky;P. Hristov;M. Huang;T. J. Humanic;D. Hutter;D. S. Hwang;R. Ilkaev;I. Ilkiv;M. Inaba;G. M. Innocenti;C. Ionita;M. Ippolitov;M. Irfan;M. Ivanov;V. Ivanov;O. Ivanytskyi;A. Jachołkowski;P. M. Jacobs;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;V. Kadyshevskiy;S. Kalcher;P. Kalinak;A. Kalweit;J. Kamin;J. H. Kang;V. Kaplin;S. Kar;A. Karasu Uysal;O. Karavichev;T. Karavicheva;E. Karpechev;U. Kebschull;R. Keidel;M. M. Khan;P. Khan;S. A. Khan;A. Khanzadeev;Y. Kharlov;B. Kileng;B. Kim;D. W. Kim;D. J. Kim;J. S. Kim;M. Kim;M. Kim;S. Kim;T. 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;C. Kobdaj;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. Kučera;Y. Kucheriaev;T. Kugathasan;C. Kuhn;P. G. Kuijer;I. Kulakov;J. Kumar;P. Kurashvili;A. Kurepin;A. B. Kurepin;A. Kuryakin;S. Kushpil;M. J. Kweon;Y. Kwon;P. Ladron de Guevara;C. Lagana Fernandes;I. Lakomov;R. Langoy;C. Lara;A. Lardeux;A. Lattuca;S. L. La Pointe;P. La Rocca;R. Lea;G. R. Lee;I. Legrand;J. Lehnert;R. C. Lemmon;V. Lenti;E. Leogrande;M. Leoncino;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;X. Lopez;E. López Torres;X.-G. Lu;P. Luettig;M. Lunardon;J. Luo;G. Luparello;C. Luzzi;R. Ma;A. Maevskaya;M. Mager;D. P. Mahapatra;A. Maire;R. D. Majka;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;C. Mayer;J. Mazer;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. M. Mitu;J. Mlynarz;B. Mohanty;L. Molnar;L. Montaño Zetina;E. Montes;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;J. Musinsky;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;F. Noferini;P. Nomokonov;G. Nooren;A. Nyanin;J. Nystrand;H. Oeschler;S. Oh;S. K. Oh;A. Okatan;L. Olah;J. Oleniacz;A. C. Oliveira Da Silva;J. Onderwaater;C. Oppedisano;A. Ortiz Velasquez;A. Oskarsson;J. Otwinowski;K. Oyama;P. Sahoo;Y. Pachmayer;M. Pachr;P. Pagano;G. Paić;F. Painke;C. Pajares;S. K. Pal;A. Palmeri;D. Pant;V. Papikyan;G. S. Pappalardo;P. Pareek;W. J. Park;S. Parmar;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;A. Pesci;V. Peskov;Y. Pestov;V. Petráček;M. Petran;M. Petris;M. Petrovici;C. Petta;S. Piano;M. Pikna;P. Pillot;O. Pinazza;L. Pinsky;D. B. Piyarathna;M. Płoskoń;M. Planinic;J. Pluta;S. Pochybova;P. L. M. Podesta-Lerma;M. G. Poghosyan;E. H. O. Pohjoisaho;B. Polichtchouk;N. Poljak;A. Pop;S. Porteboeuf-Houssais;J. Porter;V. Pospisil;B. Potukuchi;S. K. Prasad;R. Preghenella;F. Prino;C. A. Pruneau;I. Pshenichnov;G. Puddu;P. Pujahari;V. Punin;J. Putschke;H. Qvigstad;A. Rachevski;S. Raha;J. Rak;A. Rakotozafindrabe;L. Ramello;R. Raniwala;S. Raniwala;S. S. Räsänen;B. T. Rascanu;D. Rathee;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;R. A. Ricci;T. Richert;M. Richter;P. Riedler;W. Riegler;F. Riggi;A. Rivetti;E. Rocco;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;F. Roukoutakis;A. Roy;C. Roy;P. Roy;A. J. Rubio Montero;R. Rui;R. Russo;E. Ryabinkin;A. Rybicki;S. Sadovsky;K. Šafařík;B. Sahlmuller;R. Sahoo;P. K. Sahu;J. Saini;C. A. Salgado;J. Salzwedel;S. Sambyal;V. Samsonov;X. Sanchez Castro;F. J. Sánchez Rodríguez;L. Šándor;A. Sandoval;M. Sano;G. Santagati;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;G. Segato;J. E. Seger;Y. Sekiguchi;I. Selyuzhenkov;J. Seo;E. Serradilla;A. Sevcenco;A. Shabetai;G. Shabratova;R. Shahoyan;A. Shangaraev;N. Sharma;S. 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;J. Song;M. Song;F. Soramel;S. Sorensen;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;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. Szymanski;J. Takahashi;M. A. Tangaro;J. D. Tapia Takaki;A. Tarantola Peloni;A. Tarazona Martinez;A. Tauro;G. Tejeda Muñoz;A. Telesca;C. Terrevoli;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;A. Uras;G. L. Usai;M. Vajzer;M. Vala;L. Valencia Palomo;S. Vallero;P. Vande Vyvre;L. Vannucci;J. W. Van Hoorne;M. van Leeuwen;A. Vargas;R. Varma;M. Vasileiou;A. Vasiliev;V. Vechernin;M. Veldhoen;A. Velure;M. Venaruzzo;E. Vercellin;S. Vergara Limón;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;K. Voloshin;S. A. Voloshin;G. Volpe;B. von Haller;I. Vorobyev;D. Vranic;J. Vrláková;B. Vulpescu;A. Vyushin;B. Wagner;J. Wagner;V. Wagner;M. Wang;Y. Wang;D. 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;A. Zaman;C. Zampolli;S. Zaporozhets;A. Zarochentsev;P. Závada;N. Zaviyalov;H. Zbroszczyk;I. S. Zgura;M. Zhalov;H. Zhang;X. Zhang;Y. Zhang;C. 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