Measurement of J/ ψ polarization in pp collisions at [Formula: see text]

LHCb Collaboration; R Aaij; C Abellan Beteta; B Adeva; M Adinolfi; C Adrover; A Affolder; Z Ajaltouni; J Albrecht; F Alessio; M Alexander; S Ali; G Alkhazov; P Alvarez Cartelle; A A Alves Jr; S Amato; S Amerio; Y Amhis; L Anderlini; J Anderson; R Andreassen; R B Appleby; O Aquines Gutierrez; F Archilli; A Artamonov; M Artuso; E Aslanides; G Auriemma; S Bachmann; J J Back; C Baesso; V Balagura; W Baldini; R J Barlow; C Barschel; S Barsuk; W Barter; Th Bauer; A Bay; J Beddow; F Bedeschi; I Bediaga; S Belogurov; K Belous; I Belyaev; E Ben-Haim; M Benayoun; G Bencivenni; S Benson; J Benton; A Berezhnoy; R Bernet; M-O Bettler; M van Beuzekom; A Bien; S Bifani; T Bird; A Bizzeti; P M Bjørnstad; T Blake; F Blanc; J Blouw; S Blusk; V Bocci; A Bondar; N Bondar; W Bonivento; S Borghi; A Borgia; T J V Bowcock; E Bowen; C Bozzi; T Brambach; J van den Brand; J Bressieux; D Brett; M Britsch; T Britton; N H Brook; H Brown; I Burducea; A Bursche; G Busetto; J Buytaert; S Cadeddu; O Callot; M Calvi; M Calvo Gomez; A Camboni; P Campana; D Campora Perez; A Carbone; G Carboni; R Cardinale; A Cardini; H Carranza-Mejia; L Carson; K Carvalho Akiba; G Casse; L Castillo Garcia; M Cattaneo; Ch Cauet; M Charles; Ph Charpentier; P Chen; N Chiapolini; M Chrzaszcz; K Ciba; X Cid Vidal; G Ciezarek; P E L Clarke; M Clemencic; H V Cliff; J Closier; C Coca; V Coco; J Cogan; E Cogneras; P Collins; A Comerma-Montells; A Contu; A Cook; M Coombes; S Coquereau; G Corti; B Couturier; G A Cowan; D C Craik; S Cunliffe; R Currie; C D'Ambrosio; P David; P N Y David; A Davis; I De Bonis; K De Bruyn; S De Capua; M De Cian; J M De Miranda; L De Paula; W De Silva; P De Simone; D Decamp; M Deckenhoff; L Del Buono; D Derkach; O Deschamps; F Dettori; A Di Canto; H Dijkstra; M Dogaru; S Donleavy; F Dordei; A Dosil Suárez; D Dossett; A Dovbnya; F Dupertuis; R Dzhelyadin; A Dziurda; A Dzyuba; S Easo; U Egede; V Egorychev; S Eidelman; D van Eijk; S Eisenhardt; U Eitschberger; R Ekelhof; L Eklund; I El Rifai; Ch Elsasser; D Elsby; A Falabella; C Färber; G Fardell; C Farinelli; S Farry; V Fave; D Ferguson; V Fernandez Albor; F Ferreira Rodrigues; M Ferro-Luzzi; S Filippov; M Fiore; C Fitzpatrick; M Fontana; F Fontanelli; R Forty; O Francisco; M Frank; C Frei; M Frosini; S Furcas; E Furfaro; A Gallas Torreira; D Galli; M Gandelman; P Gandini; Y Gao; J Garofoli; P Garosi; J Garra Tico; L Garrido; C Gaspar; R Gauld; E Gersabeck; M Gersabeck; T Gershon; Ph Ghez; V Gibson; V V Gligorov; C Göbel; D Golubkov; A Golutvin; A Gomes; H Gordon; C Gotti; M Grabalosa Gándara; R Graciani Diaz; L A Granado Cardoso; E Graugés; G Graziani; A Grecu; E Greening; S Gregson; O Grünberg; B Gui; E Gushchin; Yu Guz; T Gys; C Hadjivasiliou; G Haefeli; C Haen; S C Haines; S Hall; T Hampson; S Hansmann-Menzemer; N Harnew; S T Harnew; J Harrison; T Hartmann; J He; V Heijne; K Hennessy; P Henrard; J A Hernando Morata; E van Herwijnen; A Hicheur; E Hicks; D Hill; M Hoballah; C Hombach; P Hopchev; W Hulsbergen; P Hunt; T Huse; N Hussain; D Hutchcroft; D Hynds; V Iakovenko; M Idzik; P Ilten; R Jacobsson; A Jaeger; E Jans; P Jaton; F Jing; M John; D Johnson; C R Jones; C Joram; B Jost; M Kaballo; S Kandybei; M Karacson; T M Karbach; I R Kenyon; U Kerzel; T Ketel; A Keune; B Khanji; O Kochebina; I Komarov; R F Koopman; P Koppenburg; M Korolev; A Kozlinskiy; L Kravchuk; K Kreplin; M Kreps; G Krocker; P Krokovny; F Kruse; M Kucharczyk; V Kudryavtsev; T Kvaratskheliya; V N La Thi; D Lacarrere; G Lafferty; A Lai; D Lambert; R W Lambert; E Lanciotti; G Lanfranchi; C Langenbruch; T Latham; C Lazzeroni; R Le Gac; J van Leerdam; J-P Lees; R Lefèvre; A Leflat; J Lefrançois; S Leo; O Leroy; T Lesiak; B Leverington; Y Li; L Li Gioi; M Liles; R Lindner; C Linn; B Liu; G Liu; S Lohn; I Longstaff; J H Lopes; E Lopez Asamar; N Lopez-March; H Lu; D Lucchesi; J Luisier; H Luo; F Machefert; I V Machikhiliyan; F Maciuc; O Maev; S Malde; G Manca; G Mancinelli; U Marconi; R Märki; J Marks; G Martellotti; A Martens; A Martín Sánchez; M Martinelli; D Martinez Santos; D Martins Tostes; A Martynov; A Massafferri; R Matev; Z Mathe; C Matteuzzi; E Maurice; A Mazurov; J McCarthy; A McNab; R McNulty; B Meadows; F Meier; M Meissner; M Merk; D A Milanes; M-N Minard; J Molina Rodriguez; S Monteil; D Moran; P Morawski; M J Morello; R Mountain; I Mous; F Muheim; K Müller; R Muresan; B Muryn; B Muster; P Naik; T Nakada; R Nandakumar; I Nasteva; M Needham; N Neufeld; A D Nguyen; T D Nguyen; C Nguyen-Mau; M Nicol; V Niess; R Niet; N Nikitin; T Nikodem; A Nomerotski; A Novoselov; A Oblakowska-Mucha; V Obraztsov; S Oggero; S Ogilvy; O Okhrimenko; R Oldeman; M Orlandea; J M Otalora Goicochea; P Owen; A Oyanguren; B K Pal; A Palano; M Palutan; J Panman; A Papanestis; M Pappagallo; C Parkes; C J Parkinson; G Passaleva; G D Patel; M Patel; G N Patrick; C Patrignani; C Pavel-Nicorescu; A Pazos Alvarez; A Pellegrino; G Penso; M Pepe Altarelli; S Perazzini; D L Perego; E Perez Trigo; A Pérez-Calero Yzquierdo; P Perret; M Perrin-Terrin; K Petridis; A Petrolini; A Phan; E Picatoste Olloqui; B Pietrzyk; T Pilař; D Pinci; S Playfer; M Plo Casasus; F Polci; G Polok; A Poluektov; E Polycarpo; D Popov; B Popovici; C Potterat; A Powell; J Prisciandaro; A Pritchard; C Prouve; V Pugatch; A Puig Navarro; G Punzi; W Qian; J H Rademacker; B Rakotomiaramanana; M S Rangel; I Raniuk; N Rauschmayr; G Raven; S Redford; M M Reid; A C Dos Reis; S Ricciardi; A Richards; K Rinnert; V Rives Molina; D A Roa Romero; P Robbe; E Rodrigues; P Rodriguez Perez; S Roiser; V Romanovsky; A Romero Vidal; J Rouvinet; T Ruf; F Ruffini; H Ruiz; P Ruiz Valls; G Sabatino; J J Saborido Silva; N Sagidova; P Sail; B Saitta; C Salzmann; B Sanmartin Sedes; M Sannino; R Santacesaria; C Santamarina Rios; E Santovetti; M Sapunov; A Sarti; C Satriano; A Satta; M Savrie; D Savrina; P Schaack; M Schiller; H Schindler; M Schlupp; M Schmelling; B Schmidt; O Schneider; A Schopper; M-H Schune; R Schwemmer; B Sciascia; A Sciubba; M Seco; A Semennikov; K Senderowska; I Sepp; N Serra; J Serrano; P Seyfert; M Shapkin; I Shapoval; P Shatalov; Y Shcheglov; T Shears; L Shekhtman; O Shevchenko; V Shevchenko; A Shires; R Silva Coutinho; T Skwarnicki; N A Smith; E Smith; M Smith; M D Sokoloff; F J P Soler; F Soomro; D Souza; B Souza De Paula; B Spaan; A Sparkes; P Spradlin; F Stagni; S Stahl; O Steinkamp; S Stoica; S Stone; B Storaci; M Straticiuc; U Straumann; V K Subbiah; S Swientek; V Syropoulos; M Szczekowski; P Szczypka; T Szumlak; S T'Jampens; M Teklishyn; E Teodorescu; F Teubert; C Thomas; E Thomas; J van Tilburg; V Tisserand; M Tobin; S Tolk; D Tonelli; S Topp-Joergensen; N Torr; E Tournefier; S Tourneur; M T Tran; M Tresch; A Tsaregorodtsev; P Tsopelas; N Tuning; M Ubeda Garcia; A Ukleja; D Urner; U Uwer; V Vagnoni; G Valenti; R Vazquez Gomez; P Vazquez Regueiro; S Vecchi; J J Velthuis; M Veltri; G Veneziano; M Vesterinen; B Viaud; D Vieira; X Vilasis-Cardona; A Vollhardt; D Volyanskyy; D Voong; A Vorobyev; V Vorobyev; C Voß; H Voss; R Waldi; R Wallace; S Wandernoth; J Wang; D R Ward; N K Watson; A D Webber; D Websdale; M Whitehead; J Wicht; J Wiechczynski; D Wiedner; L Wiggers; G Wilkinson; M P Williams; M Williams; F F Wilson; J Wishahi; M Witek; S A Wotton; S Wright; S Wu; K Wyllie; Y Xie; Z Xing; Z Yang; R Young; X Yuan; O Yushchenko; M Zangoli; M Zavertyaev; F Zhang; L Zhang; W C Zhang; Y Zhang; A Zhelezov; A Zhokhov; L Zhong; A Zvyagin

doi:10.1140/epjc/s10052-013-2631-3

Measurement of J/ ψ polarization in pp collisions at [Formula: see text]

Eur Phys J C Part Fields. 2013;73(11):2631. doi: 10.1140/epjc/s10052-013-2631-3. Epub 2013 Nov 9.

Authors

LHCb Collaboration; R Aaij¹, C Abellan Beteta², B Adeva³, M Adinolfi⁴, C Adrover⁵, A Affolder⁶, Z Ajaltouni⁷, J Albrecht⁸, F Alessio⁹, M Alexander¹⁰, S Ali¹, G Alkhazov¹¹, P Alvarez Cartelle³, A A Alves Jr^{12

9}, S Amato¹³, S Amerio¹⁴, Y Amhis¹⁵, L Anderlini¹⁶, J Anderson¹⁷, R Andreassen¹⁸, R B Appleby¹⁹, O Aquines Gutierrez²⁰, F Archilli²¹, A Artamonov²², M Artuso²³, E Aslanides⁵, G Auriemma¹², S Bachmann²⁴, J J Back²⁵, C Baesso²⁶, V Balagura²⁷, W Baldini²⁸, R J Barlow¹⁹, C Barschel⁹, S Barsuk¹⁵, W Barter²⁹, Th Bauer¹, A Bay³⁰, J Beddow¹⁰, F Bedeschi³¹, I Bediaga³², S Belogurov²⁷, K Belous²², I Belyaev²⁷, E Ben-Haim³³, M Benayoun³³, G Bencivenni²¹, S Benson³⁴, J Benton⁴, A Berezhnoy³⁵, R Bernet¹⁷, M-O Bettler²⁹, M van Beuzekom¹, A Bien²⁴, S Bifani³⁶, T Bird¹⁹, A Bizzeti¹⁶, P M Bjørnstad¹⁹, T Blake⁹, F Blanc³⁰, J Blouw²⁴, S Blusk²³, V Bocci¹², A Bondar³⁷, N Bondar¹¹, W Bonivento³⁸, S Borghi¹⁹, A Borgia²³, T J V Bowcock⁶, E Bowen¹⁷, C Bozzi²⁸, T Brambach⁸, J van den Brand³⁹, J Bressieux³⁰, D Brett¹⁹, M Britsch²⁰, T Britton²³, N H Brook⁴, H Brown⁶, I Burducea⁴⁰, A Bursche¹⁷, G Busetto¹⁴, J Buytaert⁹, S Cadeddu³⁸, O Callot¹⁵, M Calvi⁴¹, M Calvo Gomez², A Camboni², P Campana^{21

9}, D Campora Perez⁹, A Carbone⁴², G Carboni⁴³, R Cardinale⁴⁴, A Cardini³⁸, H Carranza-Mejia³⁴, L Carson⁴⁵, K Carvalho Akiba¹³, G Casse⁶, L Castillo Garcia⁹, M Cattaneo⁹, Ch Cauet⁸, M Charles⁴⁶, Ph Charpentier⁹, P Chen^{47

30}, N Chiapolini¹⁷, M Chrzaszcz⁴⁸, K Ciba⁹, X Cid Vidal⁹, G Ciezarek⁴⁵, P E L Clarke³⁴, M Clemencic⁹, H V Cliff²⁹, J Closier⁹, C Coca⁴⁰, V Coco¹, J Cogan⁵, E Cogneras⁷, P Collins⁹, A Comerma-Montells², A Contu³⁸, A Cook⁴, M Coombes⁴, S Coquereau³³, G Corti⁹, B Couturier⁹, G A Cowan³⁴, D C Craik²⁵, S Cunliffe⁴⁵, R Currie³⁴, C D'Ambrosio⁹, P David³³, P N Y David¹, A Davis¹⁸, I De Bonis⁴⁹, K De Bruyn¹, S De Capua¹⁹, M De Cian¹⁷, J M De Miranda³², L De Paula¹³, W De Silva¹⁸, P De Simone²¹, D Decamp⁴⁹, M Deckenhoff⁸, L Del Buono³³, D Derkach⁴², O Deschamps⁷, F Dettori³⁹, A Di Canto²⁴, H Dijkstra⁹, M Dogaru⁴⁰, S Donleavy⁶, F Dordei²⁴, A Dosil Suárez³, D Dossett²⁵, A Dovbnya⁵⁰, F Dupertuis³⁰, R Dzhelyadin²², A Dziurda⁴⁸, A Dzyuba¹¹, S Easo^{9

51}, U Egede⁴⁵, V Egorychev²⁷, S Eidelman³⁷, D van Eijk¹, S Eisenhardt³⁴, U Eitschberger⁸, R Ekelhof⁸, L Eklund^{9

10}, I El Rifai⁷, Ch Elsasser¹⁷, D Elsby³⁶, A Falabella⁴², C Färber²⁴, G Fardell³⁴, C Farinelli¹, S Farry⁵², V Fave³⁰, D Ferguson³⁴, V Fernandez Albor³, F Ferreira Rodrigues³², M Ferro-Luzzi⁹, S Filippov⁵³, M Fiore²⁸, C Fitzpatrick⁹, M Fontana²⁰, F Fontanelli⁴⁴, R Forty⁹, O Francisco¹³, M Frank⁹, C Frei⁹, M Frosini¹⁶, S Furcas⁴¹, E Furfaro⁴³, A Gallas Torreira³, D Galli⁴², M Gandelman¹³, P Gandini²³, Y Gao⁴⁷, J Garofoli²³, P Garosi¹⁹, J Garra Tico²⁹, L Garrido², C Gaspar⁹, R Gauld⁴⁶, E Gersabeck²⁴, M Gersabeck¹⁹, T Gershon^{9

25}, Ph Ghez⁴⁹, V Gibson²⁹, V V Gligorov⁹, C Göbel²⁶, D Golubkov²⁷, A Golutvin^{27

9

45}, A Gomes¹³, H Gordon⁴⁶, C Gotti⁴¹, M Grabalosa Gándara⁷, R Graciani Diaz², L A Granado Cardoso⁹, E Graugés², G Graziani¹⁶, A Grecu⁴⁰, E Greening⁴⁶, S Gregson²⁹, O Grünberg⁵⁴, B Gui²³, E Gushchin⁵³, Yu Guz^{22

9}, T Gys⁹, C Hadjivasiliou²³, G Haefeli³⁰, C Haen⁹, S C Haines²⁹, S Hall⁴⁵, T Hampson⁴, S Hansmann-Menzemer²⁴, N Harnew⁴⁶, S T Harnew⁴, J Harrison¹⁹, T Hartmann⁵⁴, J He⁹, V Heijne¹, K Hennessy⁶, P Henrard⁷, J A Hernando Morata³, E van Herwijnen⁹, A Hicheur³², E Hicks⁶, D Hill⁴⁶, M Hoballah⁷, C Hombach¹⁹, P Hopchev⁴⁹, W Hulsbergen¹, P Hunt⁴⁶, T Huse⁶, N Hussain⁴⁶, D Hutchcroft⁶, D Hynds¹⁰, V Iakovenko⁵⁵, M Idzik⁵⁶, P Ilten⁵², R Jacobsson⁹, A Jaeger²⁴, E Jans¹, P Jaton³⁰, F Jing⁴⁷, M John⁴⁶, D Johnson⁴⁶, C R Jones²⁹, C Joram⁹, B Jost⁹, M Kaballo⁸, S Kandybei⁵⁰, M Karacson⁹, T M Karbach⁹, I R Kenyon³⁶, U Kerzel⁹, T Ketel³⁹, A Keune³⁰, B Khanji⁴¹, O Kochebina¹⁵, I Komarov³⁰, R F Koopman³⁹, P Koppenburg¹, M Korolev³⁵, A Kozlinskiy¹, L Kravchuk⁵³, K Kreplin²⁴, M Kreps²⁵, G Krocker²⁴, P Krokovny³⁷, F Kruse⁸, M Kucharczyk^{41

48}, V Kudryavtsev³⁷, T Kvaratskheliya^{27

9}, V N La Thi³⁰, D Lacarrere⁹, G Lafferty¹⁹, A Lai³⁸, D Lambert³⁴, R W Lambert³⁹, E Lanciotti⁹, G Lanfranchi^{21

9}, C Langenbruch⁹, T Latham²⁵, C Lazzeroni³⁶, R Le Gac⁵, J van Leerdam¹, J-P Lees⁴⁹, R Lefèvre⁷, A Leflat³⁵, J Lefrançois¹⁵, S Leo³¹, O Leroy⁵, T Lesiak⁴⁸, B Leverington²⁴, Y Li⁴⁷, L Li Gioi⁷, M Liles⁶, R Lindner⁹, C Linn²⁴, B Liu⁴⁷, G Liu⁹, S Lohn⁹, I Longstaff¹⁰, J H Lopes¹³, E Lopez Asamar², N Lopez-March³⁰, H Lu⁴⁷, D Lucchesi¹⁴, J Luisier³⁰, H Luo³⁴, F Machefert¹⁵, I V Machikhiliyan^{27

49}, F Maciuc⁴⁰, O Maev^{11

9}, S Malde⁴⁶, G Manca³⁸, G Mancinelli⁵, U Marconi⁴², R Märki³⁰, J Marks²⁴, G Martellotti¹², A Martens³³, A Martín Sánchez¹⁵, M Martinelli¹, D Martinez Santos³⁹, D Martins Tostes¹³, A Martynov³⁵, A Massafferri³², R Matev⁹, Z Mathe⁹, C Matteuzzi⁴¹, E Maurice⁵, A Mazurov^{28

53

9}, J McCarthy³⁶, A McNab¹⁹, R McNulty⁵², B Meadows^{46

18}, F Meier⁸, M Meissner²⁴, M Merk¹, D A Milanes³³, M-N Minard⁴⁹, J Molina Rodriguez²⁶, S Monteil⁷, D Moran¹⁹, P Morawski⁴⁸, M J Morello³¹, R Mountain²³, I Mous¹, F Muheim³⁴, K Müller¹⁷, R Muresan⁴⁰, B Muryn⁵⁶, B Muster³⁰, P Naik⁴, T Nakada³⁰, R Nandakumar⁵¹, I Nasteva³², M Needham³⁴, N Neufeld⁹, A D Nguyen³⁰, T D Nguyen³⁰, C Nguyen-Mau³⁰, M Nicol¹⁵, V Niess⁷, R Niet⁸, N Nikitin³⁵, T Nikodem²⁴, A Nomerotski⁴⁶, A Novoselov²², A Oblakowska-Mucha⁵⁶, V Obraztsov²², S Oggero¹, S Ogilvy¹⁰, O Okhrimenko⁵⁵, R Oldeman³⁸, M Orlandea⁴⁰, J M Otalora Goicochea¹³, P Owen⁴⁵, A Oyanguren², B K Pal²³, A Palano⁵⁷, M Palutan²¹, J Panman⁹, A Papanestis⁵¹, M Pappagallo¹⁰, C Parkes¹⁹, C J Parkinson⁴⁵, G Passaleva¹⁶, G D Patel⁶, M Patel⁴⁵, G N Patrick⁵¹, C Patrignani⁴⁴, C Pavel-Nicorescu⁴⁰, A Pazos Alvarez³, A Pellegrino¹, G Penso¹², M Pepe Altarelli⁹, S Perazzini⁴², D L Perego⁴¹, E Perez Trigo³, A Pérez-Calero Yzquierdo², P Perret⁷, M Perrin-Terrin⁵, K Petridis⁴⁵, A Petrolini⁴⁴, A Phan²³, E Picatoste Olloqui², B Pietrzyk⁴⁹, T Pilař²⁵, D Pinci¹², S Playfer³⁴, M Plo Casasus³, F Polci³³, G Polok⁴⁸, A Poluektov^{37

25}, E Polycarpo¹³, D Popov²⁰, B Popovici⁴⁰, C Potterat², A Powell⁴⁶, J Prisciandaro³⁰, A Pritchard⁶, C Prouve¹⁵, V Pugatch⁵⁵, A Puig Navarro³⁰, G Punzi³¹, W Qian⁴⁹, J H Rademacker⁴, B Rakotomiaramanana³⁰, M S Rangel¹³, I Raniuk⁵⁰, N Rauschmayr⁹, G Raven³⁹, S Redford⁴⁶, M M Reid²⁵, A C Dos Reis³², S Ricciardi⁵¹, A Richards⁴⁵, K Rinnert⁶, V Rives Molina², D A Roa Romero⁷, P Robbe¹⁵, E Rodrigues¹⁹, P Rodriguez Perez³, S Roiser⁹, V Romanovsky²², A Romero Vidal³, J Rouvinet³⁰, T Ruf⁹, F Ruffini³¹, H Ruiz², P Ruiz Valls², G Sabatino¹², J J Saborido Silva³, N Sagidova¹¹, P Sail¹⁰, B Saitta³⁸, C Salzmann¹⁷, B Sanmartin Sedes³, M Sannino⁴⁴, R Santacesaria¹², C Santamarina Rios³, E Santovetti⁴³, M Sapunov⁵, A Sarti²¹, C Satriano¹², A Satta⁴³, M Savrie²⁸, D Savrina^{27

35}, P Schaack⁴⁵, M Schiller³⁹, H Schindler⁹, M Schlupp⁸, M Schmelling²⁰, B Schmidt⁹, O Schneider³⁰, A Schopper⁹, M-H Schune¹⁵, R Schwemmer⁹, B Sciascia²¹, A Sciubba¹², M Seco³, A Semennikov²⁷, K Senderowska⁵⁶, I Sepp⁴⁵, N Serra¹⁷, J Serrano⁵, P Seyfert²⁴, M Shapkin²², I Shapoval^{28

50}, P Shatalov²⁷, Y Shcheglov¹¹, T Shears^{9

6}, L Shekhtman³⁷, O Shevchenko⁵⁰, V Shevchenko²⁷, A Shires⁴⁵, R Silva Coutinho²⁵, T Skwarnicki²³, N A Smith⁶, E Smith^{51

46}, M Smith¹⁹, M D Sokoloff¹⁸, F J P Soler¹⁰, F Soomro²¹, D Souza⁴, B Souza De Paula¹³, B Spaan⁸, A Sparkes³⁴, P Spradlin¹⁰, F Stagni⁹, S Stahl²⁴, O Steinkamp¹⁷, S Stoica⁴⁰, S Stone²³, B Storaci¹⁷, M Straticiuc⁴⁰, U Straumann¹⁷, V K Subbiah⁹, S Swientek⁸, V Syropoulos³⁹, M Szczekowski⁵⁸, P Szczypka^{9

30}, T Szumlak⁵⁶, S T'Jampens⁴⁹, M Teklishyn¹⁵, E Teodorescu⁴⁰, F Teubert⁹, C Thomas⁴⁶, E Thomas⁹, J van Tilburg²⁴, V Tisserand⁴⁹, M Tobin³⁰, S Tolk³⁹, D Tonelli⁹, S Topp-Joergensen⁴⁶, N Torr⁴⁶, E Tournefier^{49

45}, S Tourneur³⁰, M T Tran³⁰, M Tresch¹⁷, A Tsaregorodtsev⁵, P Tsopelas¹, N Tuning¹, M Ubeda Garcia⁹, A Ukleja⁵⁸, D Urner¹⁹, U Uwer²⁴, V Vagnoni⁴², G Valenti⁴², R Vazquez Gomez², P Vazquez Regueiro³, S Vecchi²⁸, J J Velthuis⁴, M Veltri¹⁶, G Veneziano³⁰, M Vesterinen⁹, B Viaud¹⁵, D Vieira¹³, X Vilasis-Cardona², A Vollhardt¹⁷, D Volyanskyy²⁰, D Voong⁴, A Vorobyev¹¹, V Vorobyev³⁷, C Voß⁵⁴, H Voss²⁰, R Waldi⁵⁴, R Wallace⁵², S Wandernoth²⁴, J Wang²³, D R Ward²⁹, N K Watson³⁶, A D Webber¹⁹, D Websdale⁴⁵, M Whitehead²⁵, J Wicht⁹, J Wiechczynski⁴⁸, D Wiedner²⁴, L Wiggers¹, G Wilkinson⁴⁶, M P Williams^{25

51}, M Williams⁵⁹, F F Wilson⁵¹, J Wishahi⁸, M Witek⁴⁸, S A Wotton²⁹, S Wright²⁹, S Wu⁴⁷, K Wyllie⁹, Y Xie^{9

34}, Z Xing²³, Z Yang⁴⁷, R Young³⁴, X Yuan⁴⁷, O Yushchenko²², M Zangoli⁴², M Zavertyaev²⁰, F Zhang⁴⁷, L Zhang²³, W C Zhang⁵², Y Zhang⁴⁷, A Zhelezov²⁴, A Zhokhov²⁷, L Zhong⁴⁷, A Zvyagin⁹

Affiliations

¹ Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands.
² Universitat de Barcelona, Barcelona, Spain.
³ Universidad de Santiago de Compostela, Santiago de Compostela, Spain.
⁴ H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom.
⁵ CNRS/IN2P3, CPPM, Aix-Marseille Université, Marseille, France.
⁶ Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom.
⁷ CNRS/IN2P3, LPC, Clermont Université, Université Blaise Pascal, Clermont-Ferrand, France.
⁸ Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany.
⁹ European Organization for Nuclear Research (CERN), Geneva, Switzerland.
¹⁰ School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom.
¹¹ Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia.
¹² Sezione INFN di Roma La Sapienza, Roma, Italy.
¹³ Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.
¹⁴ Sezione INFN di Padova, Padova, Italy.
¹⁵ LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France.
¹⁶ Sezione INFN di Firenze, Firenze, Italy.
¹⁷ Physik-Institut, Universität Zürich, Zürich, Switzerland.
¹⁸ University of Cincinnati, Cincinnati, OH United States.
¹⁹ School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom.
²⁰ Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany.
²¹ Laboratori Nazionali dell'INFN di Frascati, Frascati, Italy.
²² Institute for High Energy Physics (IHEP), Protvino, Russia.
²³ Syracuse University, Syracuse, NY United States.
²⁴ Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany.
²⁵ Department of Physics, University of Warwick, Coventry, United Kingdom.
²⁶ Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rio de Janeiro, Brazil.
²⁷ Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia.
²⁸ Sezione INFN di Ferrara, Ferrara, Italy.
²⁹ Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom.
³⁰ Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
³¹ Sezione INFN di Pisa, Pisa, Italy.
³² Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil.
³³ LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France.
³⁴ School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom.
³⁵ Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia.
³⁶ University of Birmingham, Birmingham, United Kingdom.
³⁷ Budker Institute of Nuclear Physics (SB RAS) and Novosibirsk State University, Novosibirsk, Russia.
³⁸ Sezione INFN di Cagliari, Cagliari, Italy.
³⁹ Nikhef National Institute for Subatomic Physics and VU University Amsterdam, Amsterdam, The Netherlands.
⁴⁰ Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania.
⁴¹ Sezione INFN di Milano Bicocca, Milano, Italy.
⁴² Sezione INFN di Bologna, Bologna, Italy.
⁴³ Sezione INFN di Roma Tor Vergata, Roma, Italy.
⁴⁴ Sezione INFN di Genova, Genova, Italy.
⁴⁵ Imperial College London, London, United Kingdom.
⁴⁶ Department of Physics, University of Oxford, Oxford, United Kingdom.
⁴⁷ Center for High Energy Physics, Tsinghua University, Beijing, China.
⁴⁸ Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland.
⁴⁹ LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France.
⁵⁰ NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine.
⁵¹ STFC Rutherford Appleton Laboratory, Didcot, United Kingdom.
⁵² School of Physics, University College Dublin, Dublin, Ireland.
⁵³ Institute for Nuclear Research of the Russian Academy of Sciences (INR RAN), Moscow, Russia.
⁵⁴ Institut für Physik, Universität Rostock, Rostock, Germany.
⁵⁵ Institute for Nuclear Research of the National Academy of Sciences (KINR), Kyiv, Ukraine.
⁵⁶ Faculty of Physics and Applied Computer Science, AGH - University of Science and Technology, Kraków, Poland.
⁵⁷ Sezione INFN di Bari, Bari, Italy.
⁵⁸ National Center for Nuclear Research (NCBJ), Warsaw, Poland.
⁵⁹ Massachusetts Institute of Technology, Cambridge, MA United States.

Abstract

An angular analysis of the decay J/ψ→μ⁺μ^- is performed to measure the polarization of prompt J/ψ mesons produced in pp collisions at [Formula: see text]. The dataset corresponds to an integrated luminosity of 0.37 fb^-1 collected with the LHCb detector. The measurement is presented as a function of transverse momentum, p_T, and rapidity, y, of the J/ψ meson, in the kinematic region 2<p_T<15 GeV/c and 2.0<y<4.5.