Suppression and azimuthal anisotropy of prompt and nonprompt {mathrm{J}}/psi production in PbPb collisions at sqrt{{s_{_{text {NN}}}}} =2.76,mathrm{TeV}

V Khachatryan,O Dvornikov,J C Ruiz Vargas,P Azzi,S Marcellini,I Vila,Y Haddad,V Innocente,M Ahmad,V Gavrilov,L Cristella,A Gizhko,G Steinbrück,V O’Dell,D M Raymond,V Popov,B Mahakud,M Zeyrek,A Dermenev,O Kara,S Lammel,C Mclean,J Schieck,D Petyt,P Spagnolo,S Wasserbaech,C Mueller,M Zanetti,C Beluffi,M Chertok,A Staiano,J Alexander,S Carpinteyro,S Braibant-Giacomelli,S Meola,P Lecomte,S Brandt,G A Alves,S I Cooper,M Paulini,G Landsberg,A Triossi,O Kaya,G Singh,S Thüer,A Volkov,A Evans,K Androsov,I Ahmed,Q Hassan,J Nash,Q Wang,R Sacchi,A Raspereza,C Charlot,T Frueboes,M Kadastik,E Barberis,T Boccali,L Fanò,T Eichhorn,A Lee,A C Mignerey,K Long,R Campanini,G Mitselmakher,D Pinna,M Stoye,S My,M Vutova,K Romanowska-Rybinska,M Malberti,J J Brooke,P Raics,P Rumerio,A Juodagalvis,J R Vlimant,A Levine,D Dobur,D Hidas,E Perez,C Battilana,G Karapostoli,E Paradas,R Bellan,R P Gandrajula,H Mildner,P Avery,R Klanner,M T Grippo,E M Gregores,M Tripathi,T Esch,F Bachmair,M Olszewski,V Savrin,L Caminada,M Meyer,S Schumann,E Asilar,K Skovpen,F Fabozzi,Z Zolkapli,D Sheffield,F Cenna,G Ortona,G M Innocenti,A Vartak,E Locci,P Paolucci,S Schnetzer,E Eren,S Taroni,B C Choudhary,N Akchurin,L Gauthier,P Musella,A W Jung,D Poyraz,M W Arenton,A Dimitrov,G Kole,S Rappoccio,I Antropov,M Wolf,T Tuuva,D Olivito,M Weinberg,D H Kim,M Misiura,Y M Tzeng,A Apresyan,M Chen,H Reithler,M Azarkin,V Hegde,M Kaur,M Hohlmann,K Yi,R Bhandari,B Grynyov,E Bouvier,S Cooperstein,M U Mozer,T Liu,D Creanza,T James,P K Behera,S Kudella,L Soffi,M Verweij,K Kothekar,A Perrotta,P Salvini,D Cieri,C Bruner,S Tosi,P C Bhat,D Gonzalez,S Hagopian,C Dietz,U Joshi,N Kellams,S Beauceron,L Silvestris,K Lamichhane,M Krammer,G Riley,S Obraztsov,L Gouskos,A Adair,R Conway,I J Cabrillo,A Mohammadi,S Flowers,F Ball,D M Newbold,R Venditti,M E Dinardo,A Bylinkin,H Wang,N Skhirtladze,T Maerschalk,A Santocchia,C Paus,R M Harris,A Nayak,H Neugebauer,G Mavromanolakis,T Hebbeker,D Shtol,L Bianchini,M Pieri,P Janot,J.-P Merlo,I Shvetsov,N Demaria,A Borzou,N Neumeister,C Veelken,E Gurpinar,S Fartoukh,S Tuo,A Reinsvold,P A Razis,R Eusebi,J Dittmann,C Schnaible,G Breto,G Roland,K Nawrocki,D Tlisov,L Lyons,S Piperov,A Geiser,H Saka,A Künsken,B Bilki,K Matchev,M Verzetti,S Damarseckin,G Petrucciani,G Hanson,K Shchelina,J Lee,P Connor,B Lee,G Sguazzoni,A Topkar,H B Newman,R Lipton,S Moortgat,T Rohe,J Hardenbrook,O Bondu,G Rolandi,A Mehta,B Francois,V Daponte,D Devetak,C.-E Wulz,L Quertenmont,M Friedl,H Rohringer,J Bernardini,A Holzner,M Marionneau,A Ivanov,P Turner,B Safarzadeh,V Knünz,M Cerrada,Y J Lu,D Contardo,J Jacob,M Dittmar,V Krutelyov,K Pedro,I Krätschmer,R Chawla,I B Laktineh,L Calligaris,S Baffioni,G Eckerlin,D Bonacorsi,G Abbiendi,H Tholen,P Bortignon,S Ghosh,E Hughes,L Mastrolorenzo,R Bainbridge,B Marzocchi,A Tatarinov,N Odell,R Heller,J Hakala,P Bargassa,S Sagir,A Starodumov,B Parida,F Meier,M Choi,A M Sirunyan,C George,G Quast,F Lagarde,R Mueller,D Acosta,S Cho,S Pandey,A Johnson,P R Dudero,A Bhardwaj,K F Johnson,C Ferraioli,T Verlage,R Bi,S Nahn,K Kadija,C Grandi,A Massironi,I Pedraza,F Palla,K Stenson,H Behnamian,D Krofcheck,M Arneodo,J Kaisen,Y Go,R Schöfbeck,P Depasse,S Mukherjee,L Shchutska,P Cirkovic,W Lange,L Scodellaro,R Mankel,P Millet,S Alderweireldt,A Bundock,S Bein,S Viret,Z Lesko,R Di Maria,A Pérez-Calero Yzquierdo,E Monteil,N Krasnikov,H Mermerkaya,I Gorbunov,R Chierici,E Focardi,A Popov,E Kuznetsova,P Busson,J Marco,M Akbiyik,G Perrin,V Azzolini,W Mcbrayer,S Jabeen,W L Aldá Júnior,M Pelliccioni,J P Gomez,D Burton,A Cimmino,V M Ghete,D Meister,H Zhang,M Endres,N Colino,H Rykaczewski,Q Li,A T Meneguzzo,A Lelek,G Boudoul,A Gurrola,S Fiorendi,B Jayatilaka,A Bocci,R Leonardi,W Xie,D Liko,A Hortiangtham,L Brito,K Sumorok,P Gunnellini,D Fehling,M Walker,N Tambe,A Givernaud,A Dishaw,D Lincoln,V Golovtsov,P Sheldon,M Guilbaud,P Markowitz,F Ricci-Tam,B Kilminster,B Dorney,K Nash,R Lander,M Mannelli,X Niu,T Kolberg,A Güth,R Castello,E Laird,A Rosowsky,G Mantovani,A Elliott-Peisert,C 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Shmatov,J Stupak,K Mondal,R Caspart,A Braghieri,A Agapitos,S Colafranceschi,K Thapa,K M Ecklund,S Donato,H Qu,M Paganoni,M Masciovecchio,D Tsiakkouri,O Driga,A.-C Le Bihan,M Hildreth,S Erdweg,J Buchanan,S Gundacker,C Kleinwort,F Matorras,M Missiroli,A Junkes,Y Kim,D Sperka,G Sieber,M Hoffmann,T Peltola,P Ma,S Mersi,G Hamel De Monchenault,V Korotkikh,A Beretvas,A Pozdnyakov,V Hagopian,N Parashar,S Regnard,F Raupach,C Henderson,M Tosi,O Baron,M Olmedo Negrete,D Noonan,G R Snow,A Aubin,R Castaldi,A Hart,X Sun,M Yalvac,A Hervé,P Wittich,W Lin,I Vai,R Y Zhu,S Beranek,M M Obertino,A Parker,G Bruno,C Favaro,A Khan,D Nowatschin,S Choudhury,S Malvezzi,T Peiffer,T Rodrigo,H R Hoorani,J Berger,K Lipka,D Nash,P Montagna,A Gribushin,P Luukka,P G Mercadante,B Allen,J Pata,M Citron,D Duchardt,G Kasieczka,N Wardle,G Selvaggi,G Fedi,H C Kaestli,A Fanfani,P T Cox,M Niedziela,J Mans,K Lee,E Tuovinen,J Goldstein,M Trovato,T Sakuma,A Mertens,Y Mao,N Wickramage,R Wolf,G Anagnostou,C Sander,J Hauser,S Harper,A Kaur,V Karimäki,A R Draeger,F Margaroli,P Petkov,K Padeken,A Tumasyan,A Heister,F Ravera,N Sur,A Gozzelino,J Pilot,G M Chen,A Terkulov,D Gigi,R Bartek,G Masetti,M Konecki,M Górski,M Zientek,D Gastler,E Tziaferi,A Ackert,J Goodell,A Yagil,F Romeo,M Buttignol,D Menasce,B Blumenfeld,P Merkel,A Korytov,A Safonov,M Planer,N Leonardo,W Funk,M Szleper,Hannsjoerg Artur Weber ,M Flechl,J M Hernández ,А Александров ,Yu I Skovpen ,O Buchmüller ,J M Grados Luyando,É Chapon ,M A Shah,A Kayis Topaksu,P Goldenzweig,J D Tapia Takaki,P E Karchin,Mirena Ivova Paneva ,A De Roeck,A Çakır ,E J Tonelli Manganote,F Simonetto,L F Chaparro Sierra,Jui-Fa Tsai ,P Adžić ,Frank Roscher ,C Diez Pardos,S Argirò ,H El Mamouni,E De La Cruz-Burelo,P Gras,V Brigljević ,E Eskandari Tadavani,Luisa Alunni Solestizi ,Sam Daniel Mullin ,А Калинин ,В Макаренко ,A Çelik ,N De Filippis,H S Chen,S Fonseca De Souza,V Veszprémi ,Deepak Kumar Sahoo ,Q Ingram,Sh Jain,Yongjie Xin ,G P Van Onsem,M Chamizo Llatas,D Horváth ,R G Kellogg,S Tkaczyk,E Clément ,H Lee,A Lopez Virto,P Milenović ,Feng Liu ,C H Shepherd‐Themistocleous ,L Lloret Iglesias,P Bloch,C Ávila ,L Kreczko,D Blöch ,P Jež ,G Nicolas Kaufman,J R Smith ,Martin Weber ,А Спиридонов ,M R Adams,N Godinović ,R Stringer,B Ujvári ,P De Castro Manzano,A Di Mattia,L Di Matteo,H W Wulsin,G Mäggi ,J Fernández Menéndez ,S H Seo,T Lenzi,A Escalante Del Valle,A Rizzi,M Grünewald ,Sa Jain,M Centis Vignali,M Lo Vetere,C Neu,A Calderón ,D Del Re,P De Barbaro,K A Ulmer,M De Mattia,Y T Duh,M Besançon ,E M Da Costa,C Mora Herrera,D De Jesus Damiao,G Gomez Ceballos,U Bhawandeep,E Palencia Cortezón ,S Bilmiş ,Arun Kumar,Daniel John Karmgard ,R Sharma,D Winn,R D Field,J Alcaraz Maestre,G B Yu,K H Lo,F Pauß ,Wan Ahmad Tajuddin Wan Abdullah ,Supratik Mukhopadhyay ,A Zagoździńska ,S Cihangir,R Démina ,C B Martin ,M Lipiński ,U K Yang,T Šuša ,Jimin George ,M J Costa ,Sarah Seif El Nasr-Storey ,M Franco Sevilla,G Grenier,G Önengüt ,V A Giakoumopoulou,J A Gómez ,Saša 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Currás ,R Vidal,A A Bin Anuar,B De La Cruz,I D Sandoval Gonzalez,A Richards,K Cankoçak ,N Zaganidis,Alexey Finkel ,В Сулимов ,D Sunar Cerci,L Romero,W Ji,R Plačakytė ,M Vander Donckt,Jaehoon Lim ,I De Bruyn,G Zevi Della Porta,S De Visscher,A Rýd ,S Çerçi ,Р Тенчини ,S J Qian,P Van Hove,M De Palma,M Jones,M Guchait,S Williamson,S Sánchez Cruz ,M C Fouz,C Tuvé ,G De Lentdecker,M Vidal Marono,C Oʼbrien ,S Bhattacharya,S Abu Zeid,E A De Wolf,S Paktinat Mehdiabadi,Simon Fink ,I Van Parijs,L Felď ,B Tali,B Fabbro,В Жуков ,T Geralis,Y Ban,Mohd Adli Bin Ali ,Sandra Padula ,Sanjeev Kumar ,R Kunnawalkam Elayavalli,C Scharf,V Reković ,A Morelos Pineda,J Rodrigues Antunes,E Belchior Batista Das Chagas,C S Moon,R Gonzalez Suarez,D Ferenček ,M Fernández ,A Van Spilbeeck,P Van Mechelen,J Puerta Pelayo,S Afanasiev,Manqi Ruan ,C Barth,S Mitra,S Dubé ,Н Голубев ,M Mohammadi Najafabadi,F Gasparini,J S H Lee,Alberto Orso Maria Iorio ,R Cousins,I Hoş ,M A Mahmoud,F Rezaei Hosseinabadi,M Ö Sahin ,E Navarro De Martino,S Perriès ,J Suarez Gonzalez,F Nessi‐Tedaldi ,R M Brown,I Heredia-De La Cruz,T Kress,Yang Yu ,K H M Kwok,Marco Esposito ,G Martı́nez ,A Melo,Z Xu ,G N Kim,Andrey Demiyanov ,R Vilar Cortabitarte,E Spencer,S Czellár ,J W Gary,V Monaco,F De Guio,A Quintario Olmeda,Tao Huang ,J Schwandt,J C Sanabria,J A Brochero Cifuentes,J D Ruiz Alvarez,A Meyer,L M Huertas Guativa,L Wendland,В Качанов ,C F Gonźalez Herńandez ,W T Ford,P Chang,T R Fernandez Perez Tomei,A Vilela Pereira,V Dūdėnas ,A Delgado Peris,K Krajczár ,T Schöerner-Sadenius ,J Hoß ,C Oropeza Barrera,J Milošević ,N Filipović ,Maria Agnese Ciocci ,G G Da Silveira,M Calderón De La Barca Sánchez ,A Baden,P Martinez Ruiz Del Arbol,S Roy Chowdhury,H Białkowska ,E Carrera Jarrin,C De Oliveira Martins,K Hurtado Anampa,A Hernández-Almada ,Jordon Rowe Adams ,Y Güler ,M Barrio Luna,D Matos Figueiredo,Ashok Kumar,B Wysłouch ,H Castilla‐Valdez ,R B Garg,V Lemaı̂tre ,S M A Ghiasi Shirazi,J N Butler,H Oğul ,Eric Christian Chabert ,J Almond,B Akgün ,J Mc Donald,C Fernandez Bedoya,C Hajdú ,T Weiler,F Vazquez Valencia,P Rebello Teles,Mukund Varma ,Juan Ramon Castiñeiras De Saa ,M Vazquez Acosta,Lloyd Stanley Durkin ,P Van Mulders,P Kyberd,C Martínez Rivero ,Y Chào ,H Van Haevermaet,A García-Bellido ,F Özok ,A Di Francesco,G Gökbulut ,J Ellison,A Rácz ,N Van Remortel,S Baur,Raymond Patrick Kenny ,B Işıldak ,S Schael,Fábio Lúcio Alves ,W Bertl,John Michael Marraffino ,H Wei,J Königsberg ,M Déjardin ,W Van Doninck,S Đurić ,O González López ,Y Choi,M Kröhn ,M Van De Klundert,J G Branson,A David,H U Flaecher ,P G Ferreira Parracho,A Rinkevičius ,G B Mohanty,D Romero Abad,M Della Negra,A Bornheim,G P Siroli,K Buńkowski ,R López-Fernández ,A Rose,B Penning,R Bhattacharya,J Lykken,F Mohamad Idris,J Królikowski ,I Dumanoğlu ,C Cowden,A Ellithi Kamel,Peter Hansen ,A Sánchez-Hernández ,Z Szillási ,Gian Luca Pinna Angioni ,R Loveless,S C Kao,D Ćutts ,J Malclès ,R Chistov,J Andreä ,Zainol Abidin Ibrahim ,A Carvalho Antunes De Oliveira,S Goy Lopez,W De Boer,P Verdier

doi:10.1140/epjc/s10052-017-4781-1

Abstract

The nuclear modification factor R_{mathrm{AA}} and the azimuthal anisotropy coefficient v_{2} of prompt and nonprompt (i.e. those from decays of b hadrons) {mathrm{J}}/psi mesons, measured from PbPb and pp collisions at sqrt{{s_{_{text {NN}}}}} =2.76,mathrm{TeV} at the LHC, are reported. The results are presented in several event centrality intervals and several kinematic regions, for transverse momenta p_{mathrm{T}} >6.5,{mathrm{GeV}}/{mathrm{c}} and rapidity |{y}|<2.4, extending down to p_{mathrm{T}} =3,{mathrm{GeV}}/{mathrm{c}} in the 1.6<|{y}|<2.4 range. The v_{2} of prompt {mathrm{J}}/psi is found to be nonzero, but with no strong dependence on centrality, rapidity, or p_{mathrm{T}} over the full kinematic range studied. The measured v_{2} of nonprompt {mathrm{J}}/psi is consistent with zero. The R_{mathrm{AA}} of prompt {mathrm{J}}/psi exhibits a suppression that increases from peripheral to central collisions but does not vary strongly as a function of either y or p_{mathrm{T}} in the fiducial range. The nonprompt {mathrm{J}}/psi R_{mathrm{AA}} shows a suppression which becomes stronger as rapidity or p_{mathrm{T}} increases. The v_{2} and R_{mathrm{AA}} of open and hidden charm, and of open charm and beauty, are compared.

Highlights

Recent data from RHIC and the CERN LHC for mesons containing charm and beauty quarks have allowed more detailed theoretical and experimental studies [1] of the phenomenology of these heavy quarks in a deconfined quark gluon plasma (QGP) [2] at large energy densities and high temperatures [3]
Whether as quarkonium states QQ [4] or as mesons made of heavy-light quark– antiquark pairs Qq [5], are considered key probes of the QGP, since their short formation time allows them to probe all stages of the QGP evolution [1]
nucleons participating in the collisions (Npart) of prompt D0 mesons, and of averaged prompt D mesons (D0, D+ and D∗+ combined), measured in |y| < 0.5 at low pT (2 < pT < 5 GeV/c), and high pT (6 < pT < 12 GeV/c) [61] are used. These are compared to hidden charm data from the prompt J/ψ results described in this paper, in two pT regions that are similar to the D measurement, i.e. (3 < pT < 6.5 GeV/c, 1.6 < |y| < 2.4) and (6.5 < pT < 30 GeV/c, |y| < 1.2)

Summary

Introduction

Recent data from RHIC and the CERN LHC for mesons containing charm and beauty quarks have allowed more detailed theoretical and experimental studies [1] of the phenomenology of these heavy quarks in a deconfined quark gluon plasma (QGP) [2] at large energy densities and high temperatures [3]. The importance of an unambiguous and detailed measurement of open beauty flavour is driven by the need to understand key features of the dynamics of parton interactions and hadron formation in the QGP: the colour-charge and parton-mass dependences for the inmedium interactions [5,10,11,12,13], the relative contribution of radiative and collisional energy loss [14,15,16], and the effects of different hadron formation times [17,18] Another aspect of the heavy-quark phenomenology in the QGP concerns differences in the behaviour (energy loss mechanisms, amount and strength of interactions with the surrounding medium) of a QQ pair (the pre-quarkonium state) relative to that of a single heavy quark Q (the pre-meson component) [19,20,21]

Methods

Results

Discussion

Conclusion