Measurement of the [Formula: see text] production cross-section in proton-proton collisions via the decay [Formula: see text]

R Aaij¹, C Abellán Beteta², B Adeva³, M Adinolfi⁴, A Affolder⁵, Z Ajaltouni⁶, S Akar⁷, 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 An¹⁶, L Anderlini¹⁷, J Anderson², R Andreassen¹⁸, M Andreotti¹⁹, J E Andrews²⁰, R B Appleby²¹, O Aquines Gutierrez²², F Archilli⁹, A Artamonov²³, M Artuso²⁴, E Aslanides⁷, G Auriemma¹², M Baalouch⁶, S Bachmann²⁵, J J Back²⁶, A Badalov²⁷, C Baesso²⁸, W Baldini¹⁹, R J Barlow²¹, C Barschel⁹, S Barsuk¹⁵, W Barter²⁹, V Batozskaya³⁰, V Battista³¹, A Bay³¹, L Beaucourt³², J Beddow¹⁰, F Bedeschi³³, I Bediaga³⁴, S Belogurov³⁵, K Belous²³, I Belyaev³⁵, E Ben-Haim³⁶, G Bencivenni³⁷, S Benson⁹, J Benton⁴, A Berezhnoy³⁸, R Bernet², M-O Bettler²⁹, M van Beuzekom¹, A Bien²⁵, S Bifani³⁹, T Bird²¹, A Bizzeti¹⁷, P M Bjørnstad²¹, T Blake²⁶, F Blanc³¹, J Blouw²², S Blusk²⁴, V Bocci¹², A Bondar⁴⁰, N Bondar^{11

9}, W Bonivento^{41

9}, S Borghi²¹, A Borgia²⁴, M Borsato¹⁵, T J V Bowcock⁵, E Bowen², C Bozzi¹⁹, T Brambach⁸, J Bressieux³¹, D Brett²¹, M Britsch²², T Britton²⁴, J Brodzicka²¹, N H Brook⁴, H Brown⁵, A Bursche², G Busetto¹⁴, J Buytaert⁹, S Cadeddu⁴¹, R Calabrese¹⁹, M Calvi⁴², M Calvo Gomez²⁷, P Campana^{37

9}, D Campora Perez⁹, A Carbone⁴³, G Carboni⁴⁴, R Cardinale^{45

9}, A Cardini⁴¹, L Carson⁴⁶, K Carvalho Akiba¹³, G Casse⁵, L Cassina⁴², L Castillo Garcia⁹, M Cattaneo⁹, Ch Cauet⁸, R Cenci²⁰, M Charles³⁶, Ph Charpentier⁹, M Chefdeville³², S Chen²¹, S-F Cheung⁴⁷, N Chiapolini², M Chrzaszcz^{48

2}, K Ciba⁹, X Cid Vidal⁹, G Ciezarek⁴⁹, P E L Clarke⁴⁶, M Clemencic⁹, H V Cliff²⁹, J Closier⁹, V Coco⁹, J Cogan⁷, E Cogneras⁶, V Cogoni⁴¹, L Cojocariu⁵⁰, P Collins⁹, A Comerma-Montells²⁵, A Contu^{41

9}, A Cook⁴, M Coombes⁴, S Coquereau³⁶, G Corti⁹, M Corvo¹⁹, I Counts⁵¹, B Couturier⁹, G A Cowan⁴⁶, D C Craik²⁶, M Cruz Torres²⁸, S Cunliffe⁴⁹, R Currie⁴⁶, C D'Ambrosio⁹, J Dalseno⁴, P David³⁶, P N Y David¹, A Davis¹⁸, K De Bruyn¹, S De Capua²¹, M De Cian²⁵, J M De Miranda³⁴, L De Paula¹³, W De Silva¹⁸, P De Simone³⁷, D Decamp³², M Deckenhoff⁸, L Del Buono³⁶, N Déléage³², D Derkach⁴⁷, O Deschamps⁶, F Dettori⁹, A Di Canto⁹, H Dijkstra⁹, S Donleavy⁵, F Dordei²⁵, M Dorigo³¹, A Dosil Suárez³, D Dossett²⁶, A Dovbnya⁵², K Dreimanis⁵, G Dujany²¹, F Dupertuis³¹, P Durante⁹, R Dzhelyadin²³, A Dziurda⁴⁸, A Dzyuba¹¹, S Easo^{9

53}, U Egede⁴⁹, V Egorychev³⁵, S Eidelman⁴⁰, S Eisenhardt⁴⁶, U Eitschberger⁸, R Ekelhof⁸, L Eklund¹⁰, I El Rifai⁶, E Elena², Ch Elsasser², S Ely²⁴, S Esen²⁵, H-M Evans²⁹, T Evans⁴⁷, A Falabella⁴³, C Färber²⁵, C Farinelli¹, N Farley³⁹, S Farry⁵, R F Fay⁵, D Ferguson⁴⁶, V Fernandez Albor³, F Ferreira Rodrigues³⁴, M Ferro-Luzzi⁹, S Filippov⁵⁴, M Fiore¹⁹, M Fiorini¹⁹, M Firlej⁵⁵, C Fitzpatrick³¹, T Fiutowski⁵⁵, P Fol⁴⁹, M Fontana²², F Fontanelli⁴⁵, R Forty⁹, O Francisco¹³, M Frank⁹, C Frei⁹, M Frosini¹⁷, J Fu^{56

9}, E Furfaro⁴⁴, A Gallas Torreira³, D Galli⁴³, S Gallorini^{14

9}, S Gambetta⁴⁵, M Gandelman¹³, P Gandini²⁴, Y Gao¹⁶, J García Pardiñas³, J Garofoli²⁴, J Garra Tico²⁹, L Garrido²⁷, C Gaspar⁹, R Gauld⁴⁷, L Gavardi⁸, G Gavrilov¹¹, A Geraci⁵⁶, E Gersabeck²⁵, M Gersabeck²¹, T Gershon²⁶, Ph Ghez³², A Gianelle¹⁴, S Gianì³¹, V Gibson²⁹, L Giubega⁵⁰, V V Gligorov⁹, C Göbel²⁸, D Golubkov³⁵, A Golutvin^{35

9

49}, A Gomes³⁴, C Gotti⁴², M Grabalosa Gándara⁶, R Graciani Diaz²⁷, L A Granado Cardoso⁹, E Graugés²⁷, G Graziani¹⁷, A Grecu⁵⁰, E Greening⁴⁷, S Gregson²⁹, P Griffith³⁹, L Grillo²⁵, O Grünberg⁵⁷, B Gui²⁴, E Gushchin⁵⁴, Yu Guz^{23

9}, T Gys⁹, C Hadjivasiliou²⁴, G Haefeli³¹, C Haen⁹, S C Haines²⁹, S Hall⁴⁹, B Hamilton²⁰, T Hampson⁴, X Han²⁵, S Hansmann-Menzemer²⁵, N Harnew⁴⁷, S T Harnew⁴, J Harrison²¹, J He⁹, T Head⁹, V Heijne¹, K Hennessy⁵, P Henrard⁶, L Henry³⁶, J A Hernando Morata³, E van Herwijnen⁹, M Heß⁵⁷, A Hicheur¹³, D Hill⁴⁷, M Hoballah⁶, C Hombach²¹, W Hulsbergen¹, P Hunt⁴⁷, N Hussain⁴⁷, D Hutchcroft⁵, D Hynds¹⁰, M Idzik⁵⁵, P Ilten⁵¹, R Jacobsson⁹, A Jaeger²⁵, J Jalocha⁴⁷, E Jans¹, P Jaton³¹, A Jawahery²⁰, F Jing¹⁶, M John⁴⁷, D Johnson⁹, C R Jones²⁹, C Joram⁹, B Jost⁹, N Jurik²⁴, M Kaballo⁸, S Kandybei⁵², W Kanso⁷, M Karacson⁹, T M Karbach⁹, S Karodia¹⁰, M Kelsey²⁴, I R Kenyon³⁹, T Ketel⁵⁸, B Khanji⁴², C Khurewathanakul³¹, S Klaver²¹, K Klimaszewski³⁰, O Kochebina¹⁵, M Kolpin²⁵, I Komarov³¹, R F Koopman⁵⁸, P Koppenburg^{9

1}, M Korolev³⁸, A Kozlinskiy¹, L Kravchuk⁵⁴, K Kreplin²⁵, M Kreps²⁶, G Krocker²⁵, P Krokovny⁴⁰, F Kruse⁸, W Kucewicz⁴⁸, M Kucharczyk^{42

48}, V Kudryavtsev⁴⁰, K Kurek³⁰, T Kvaratskheliya³⁵, V N La Thi³¹, D Lacarrere⁹, G Lafferty²¹, A Lai⁴¹, D Lambert⁴⁶, R W Lambert⁵⁸, G Lanfranchi³⁷, C Langenbruch²⁶, B Langhans⁹, T Latham²⁶, C Lazzeroni³⁹, R Le Gac⁷, J van Leerdam¹, J-P Lees³², R Lefèvre⁶, A Leflat³⁸, J Lefrançois¹⁵, S Leo³³, O Leroy⁷, T Lesiak⁴⁸, B Leverington²⁵, Y Li¹⁶, T Likhomanenko⁵⁹, M Liles⁵, R Lindner⁹, C Linn⁹, F Lionetto², B Liu⁴¹, S Lohn⁹, I Longstaff¹⁰, J H Lopes¹³, N Lopez-March³¹, P Lowdon², D Lucchesi¹⁴, H Luo⁴⁶, A Lupato¹⁴, E Luppi¹⁹, O Lupton⁴⁷, F Machefert¹⁵, I V Machikhiliyan³⁵, F Maciuc⁵⁰, O Maev¹¹, S Malde⁴⁷, A Malinin⁵⁹, G Manca⁴¹, G Mancinelli⁷, A Mapelli⁹, J Maratas⁶, J F Marchand³², U Marconi⁴³, C Marin Benito²⁷, P Marino³³, R Märki³¹, J Marks²⁵, G Martellotti¹², A Martens³⁶, A Martín Sánchez¹⁵, M Martinelli³¹, D Martinez Santos^{9

58}, F Martinez Vidal⁶⁰, D Martins Tostes¹³, A Massafferri³⁴, R Matev⁹, Z Mathe⁹, C Matteuzzi⁴², A Mazurov³⁹, M McCann⁴⁹, J McCarthy³⁹, A McNab²¹, R McNulty⁶¹, B McSkelly⁵, B Meadows¹⁸, F Meier⁸, M Meissner²⁵, M Merk¹, D A Milanes³⁶, M-N Minard³², N Moggi⁴³, J Molina Rodriguez²⁸, S Monteil⁶, M Morandin¹⁴, P Morawski⁵⁵, A Mordà⁷, M J Morello³³, J Moron⁵⁵, A-B Morris⁴⁶, R Mountain²⁴, F Muheim⁴⁶, K Müller², M Mussini⁴³, B Muster³¹, P Naik⁴, T Nakada³¹, R Nandakumar⁵³, I Nasteva¹³, M Needham⁴⁶, N Neri⁵⁶, S Neubert⁹, N Neufeld⁹, M Neuner²⁵, A D Nguyen³¹, T D Nguyen³¹, C Nguyen-Mau³¹, M Nicol¹⁵, V Niess⁶, R Niet⁸, N Nikitin³⁸, T Nikodem²⁵, A Novoselov²³, D P O'Hanlon²⁶, A Oblakowska-Mucha^{55

9}, V Obraztsov²³, S Oggero¹, S Ogilvy¹⁰, O Okhrimenko⁶², R Oldeman⁴¹, G Onderwater⁶³, M Orlandea⁵⁰, J M Otalora Goicochea¹³, P Owen⁴⁹, A Oyanguren⁶⁰, B K Pal²⁴, A Palano⁶⁴, F Palombo⁵⁶, M Palutan³⁷, J Panman⁹, A Papanestis^{9

53}, M Pappagallo¹⁰, L L Pappalardo¹⁹, C Parkes²¹, C J Parkinson^{8

39}, G Passaleva¹⁷, G D Patel⁵, M Patel⁴⁹, C Patrignani⁴⁵, A Pazos Alvarez³, A Pearce²¹, A Pellegrino¹, M Pepe Altarelli⁹, S Perazzini⁴³, E Perez Trigo³, P Perret⁶, M Perrin-Terrin⁷, L Pescatore³⁹, E Pesen⁶⁵, K Petridis⁴⁹, A Petrolini⁴⁵, E Picatoste Olloqui²⁷, B Pietrzyk³², T Pilař²⁶, D Pinci¹², A Pistone⁴⁵, S Playfer⁴⁶, M Plo Casasus³, F Polci³⁶, A Poluektov^{40

26}, E Polycarpo¹³, A Popov²³, D Popov²², B Popovici⁵⁰, C Potterat¹³, E Price⁴, J D Price⁵, J Prisciandaro³¹, A Pritchard⁵, C Prouve⁴, V Pugatch⁶², A Puig Navarro³¹, G Punzi³³, W Qian³², B Rachwal⁴⁸, J H Rademacker⁴, B Rakotomiaramanana³¹, M Rama³⁷, M S Rangel¹³, I Raniuk⁵², N Rauschmayr⁹, G Raven⁵⁸, F Redi⁴⁹, S Reichert²¹, M M Reid²⁶, A C Dos Reis³⁴, S Ricciardi⁵³, S Richards⁴, M Rihl⁹, K Rinnert⁵, V Rives Molina²⁷, P Robbe¹⁵, A B Rodrigues³⁴, E Rodrigues²¹, P Rodriguez Perez²¹, S Roiser⁹, V Romanovsky²³, A Romero Vidal³, M Rotondo¹⁴, J Rouvinet³¹, T Ruf⁹, H Ruiz²⁷, P Ruiz Valls⁶⁰, J J Saborido Silva³, N Sagidova¹¹, P Sail¹⁰, B Saitta⁴¹, V Salustino Guimaraes¹³, C Sanchez Mayordomo⁶⁰, B Sanmartin Sedes³, R Santacesaria¹², C Santamarina Rios³, E Santovetti⁴⁴, A Sarti³⁷, C Satriano¹², A Satta⁴⁴, D M Saunders⁴, M Savrie¹⁹, D Savrina^{35

38}, M Schiller⁵⁸, H Schindler⁹, M Schlupp⁸, M Schmelling²², B Schmidt⁹, O Schneider³¹, A Schopper⁹, M-H Schune¹⁵, R Schwemmer⁹, B Sciascia³⁷, A Sciubba¹², M Seco³, A Semennikov³⁵, I Sepp⁴⁹, N Serra², J Serrano⁷, L Sestini¹⁴, P Seyfert²⁵, M Shapkin²³, I Shapoval^{19

52}, Y Shcheglov¹¹, T Shears⁵, L Shekhtman⁴⁰, V Shevchenko⁵⁹, A Shires⁸, R Silva Coutinho²⁶, G Simi¹⁴, M Sirendi²⁹, N Skidmore⁴, T Skwarnicki²⁴, N A Smith⁵, E Smith^{53

47}, E Smith⁴⁹, J Smith²⁹, M Smith²¹, H Snoek¹, M D Sokoloff¹⁸, F J P Soler¹⁰, F Soomro³¹, D Souza⁴, B Souza De Paula¹³, B Spaan⁸, A Sparkes⁴⁶, P Spradlin¹⁰, S Sridharan⁹, F Stagni⁹, M Stahl²⁵, S Stahl²⁵, O Steinkamp², O Stenyakin²³, S Stevenson⁴⁷, S Stoica⁵⁰, S Stone²⁴, B Storaci², S Stracka³³, M Straticiuc⁵⁰, U Straumann², R Stroili¹⁴, V K Subbiah⁹, L Sun¹⁸, W Sutcliffe⁴⁹, K Swientek⁵⁵, S Swientek⁸, V Syropoulos⁵⁸, M Szczekowski³⁰, P Szczypka^{9

31}, D Szilard¹³, T Szumlak⁵⁵, S T'Jampens³², M Teklishyn¹⁵, G Tellarini¹⁹, F Teubert⁹, C Thomas⁴⁷, E Thomas⁹, J van Tilburg¹, V Tisserand³², M Tobin³¹, S Tolk⁵⁸, L Tomassetti¹⁹, D Tonelli⁹, S Topp-Joergensen⁴⁷, N Torr⁴⁷, E Tournefier³², S Tourneur³¹, M T Tran³¹, M Tresch², A Tsaregorodtsev⁷, P Tsopelas¹, N Tuning¹, M Ubeda Garcia⁹, A Ukleja³⁰, A Ustyuzhanin⁵⁹, U Uwer²⁵, C Vacca⁴¹, V Vagnoni⁴³, G Valenti⁴³, A Vallier¹⁵, R Vazquez Gomez³⁷, P Vazquez Regueiro³, C Vázquez Sierra³, S Vecchi¹⁹, J J Velthuis⁴, M Veltri¹⁷, G Veneziano³¹, M Vesterinen²⁵, B Viaud¹⁵, D Vieira¹³, M Vieites Diaz³, X Vilasis-Cardona²⁷, A Vollhardt², D Volyanskyy²², D Voong⁴, A Vorobyev¹¹, V Vorobyev⁴⁰, C Voß⁵⁷, H Voss²², J A de Vries¹, R Waldi⁵⁷, C Wallace²⁶, R Wallace⁶¹, J Walsh³³, S Wandernoth²⁵, J Wang²⁴, D R Ward²⁹, N K Watson³⁹, D Websdale⁴⁹, M Whitehead²⁶, J Wicht⁹, D Wiedner²⁵, G Wilkinson^{9

47}, M P Williams³⁹, M Williams⁵¹, H W Wilschut⁶³, F F Wilson⁵³, J Wimberley²⁰, J Wishahi⁸, W Wislicki³⁰, M Witek⁴⁸, G Wormser¹⁵, S A Wotton²⁹, S Wright²⁹, K Wyllie⁹, Y Xie⁶⁶, Z Xing²⁴, Z Xu³¹, Z Yang¹⁶, X Yuan¹⁶, O Yushchenko²³, M Zangoli⁴³, M Zavertyaev²², L Zhang²⁴, W C Zhang⁶¹, Y Zhang¹⁶, A Zhelezov²⁵, A Zhokhov³⁵, L Zhong¹⁶, A Zvyagin⁹

Affiliations

¹ Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands.
² Physik-Institut, Universität Zürich, Zurich, Switzerland.
³ Universidad de Santiago de Compostela, Santiago de Compostela, Spain.
⁴ H.H. Wills Physics Laboratory, University of Bristol, Bristol, UK.
⁵ Oliver Lodge Laboratory, University of Liverpool, Liverpool, UK.
⁶ LPC, Clermont Université, Université Blaise Pascal, CNRS/IN2P3, Clermont-Ferrand, France.
⁷ CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, 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, UK.
¹¹ Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia.
¹² Sezione INFN di Roma La Sapienza, Rome, Italy.
¹³ Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.
¹⁴ Sezione INFN di Padova, Padua, Italy.
¹⁵ LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France.
¹⁶ Center for High Energy Physics, Tsinghua University, Beijing, China.
¹⁷ Sezione INFN di Firenze, Florence, Italy.
¹⁸ University of Cincinnati, Cincinnati, OH USA.
¹⁹ Sezione INFN di Ferrara, Ferrara, Italy.
²⁰ University of Maryland, College Park, MD USA.
²¹ School of Physics and Astronomy, University of Manchester, Manchester, UK.
²² Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany.
²³ Institute for High Energy Physics (IHEP), Protvino, Russia.
²⁴ Syracuse University, Syracuse, NY USA.
²⁵ Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany.
²⁶ Department of Physics, University of Warwick, Coventry, UK.
²⁷ Universitat de Barcelona, Barcelona, Spain.
²⁸ Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rio de Janeiro, Brazil.
²⁹ Cavendish Laboratory, University of Cambridge, Cambridge, UK.
³⁰ National Center for Nuclear Research (NCBJ), Warsaw, Poland.
³¹ Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
³² LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France.
³³ Sezione INFN di Pisa, Pisa, Italy.
³⁴ Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil.
³⁵ Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia.
³⁶ LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France.
³⁷ Laboratori Nazionali dell'INFN di Frascati, Frascati, Italy.
³⁸ Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia.
³⁹ University of Birmingham, Birmingham, UK.
⁴⁰ Budker Institute of Nuclear Physics (SB RAS) and Novosibirsk State University, Novosibirsk, Russia.
⁴¹ Sezione INFN di Cagliari, Cagliari, Italy.
⁴² Sezione INFN di Milano Bicocca, Milan, Italy.
⁴³ Sezione INFN di Bologna, Bologna, Italy.
⁴⁴ Sezione INFN di Roma Tor Vergata, Rome, Italy.
⁴⁵ Sezione INFN di Genova, Genoa, Italy.
⁴⁶ School of Physics and Astronomy, University of Edinburgh, Edinburgh, UK.
⁴⁷ Department of Physics, University of Oxford, Oxford, UK.
⁴⁸ Henryk Niewodniczanski Institute of Nuclear Physics, Polish Academy of Sciences, Kraków, Poland.
⁴⁹ Imperial College London, London, UK.
⁵⁰ Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania.
⁵¹ Massachusetts Institute of Technology, Cambridge, MA USA.
⁵² NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine.
⁵³ STFC Rutherford Appleton Laboratory, Didcot, UK.
⁵⁴ Institute for Nuclear Research of the Russian Academy of Sciences (INR RAN), Moscow, Russia.
⁵⁵ Faculty of Physics and Applied Computer Science, AGH-University of Science and Technology, Kraków, Poland.
⁵⁶ Sezione INFN di Milano, Milan, Italy.
⁵⁷ Institut für Physik, Universität Rostock, Rostock, Germany.
⁵⁸ Nikhef National Institute for Subatomic Physics, VU University Amsterdam, Amsterdam, The Netherlands.
⁵⁹ National Research Centre Kurchatov Institute, Moscow, Russia.
⁶⁰ Instituto de Fisica Corpuscular (IFIC), Universitat de Valencia-CSIC, Valencia, Spain.
⁶¹ School of Physics, University College Dublin, Dublin, Ireland.
⁶² Institute for Nuclear Research of the National Academy of Sciences (KINR), Kyiv, Ukraine.
⁶³ KVI, University of Groningen, Groningen, The Netherlands.
⁶⁴ Sezione INFN di Bari, Bari, Italy.
⁶⁵ Celal Bayar University, Manisa, Turkey.
⁶⁶ Institute of Particle Physics, Central China Normal University, Wuhan, Hubei China.

PMID: 26190939
PMCID: PMC4498677
DOI: 10.1140/epjc/s10052-015-3502-x

Measurement of the [Formula: see text] production cross-section in proton-proton collisions via the decay [Formula: see text]

R Aaij et al. Eur Phys J C Part Fields. 2015.

. 2015;75(7):311.

doi: 10.1140/epjc/s10052-015-3502-x. Epub 2015 Jul 4.

Authors

Affiliations

¹ Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands.
² Physik-Institut, Universität Zürich, Zurich, Switzerland.
³ Universidad de Santiago de Compostela, Santiago de Compostela, Spain.
⁴ H.H. Wills Physics Laboratory, University of Bristol, Bristol, UK.
⁵ Oliver Lodge Laboratory, University of Liverpool, Liverpool, UK.
⁶ LPC, Clermont Université, Université Blaise Pascal, CNRS/IN2P3, Clermont-Ferrand, France.
⁷ CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, 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, UK.
¹¹ Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia.
¹² Sezione INFN di Roma La Sapienza, Rome, Italy.
¹³ Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.
¹⁴ Sezione INFN di Padova, Padua, Italy.
¹⁵ LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France.
¹⁶ Center for High Energy Physics, Tsinghua University, Beijing, China.
¹⁷ Sezione INFN di Firenze, Florence, Italy.
¹⁸ University of Cincinnati, Cincinnati, OH USA.
¹⁹ Sezione INFN di Ferrara, Ferrara, Italy.
²⁰ University of Maryland, College Park, MD USA.
²¹ School of Physics and Astronomy, University of Manchester, Manchester, UK.
²² Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany.
²³ Institute for High Energy Physics (IHEP), Protvino, Russia.
²⁴ Syracuse University, Syracuse, NY USA.
²⁵ Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany.
²⁶ Department of Physics, University of Warwick, Coventry, UK.
²⁷ Universitat de Barcelona, Barcelona, Spain.
²⁸ Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rio de Janeiro, Brazil.
²⁹ Cavendish Laboratory, University of Cambridge, Cambridge, UK.
³⁰ National Center for Nuclear Research (NCBJ), Warsaw, Poland.
³¹ Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
³² LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France.
³³ Sezione INFN di Pisa, Pisa, Italy.
³⁴ Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil.
³⁵ Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia.
³⁶ LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France.
³⁷ Laboratori Nazionali dell'INFN di Frascati, Frascati, Italy.
³⁸ Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia.
³⁹ University of Birmingham, Birmingham, UK.
⁴⁰ Budker Institute of Nuclear Physics (SB RAS) and Novosibirsk State University, Novosibirsk, Russia.
⁴¹ Sezione INFN di Cagliari, Cagliari, Italy.
⁴² Sezione INFN di Milano Bicocca, Milan, Italy.
⁴³ Sezione INFN di Bologna, Bologna, Italy.
⁴⁴ Sezione INFN di Roma Tor Vergata, Rome, Italy.
⁴⁵ Sezione INFN di Genova, Genoa, Italy.
⁴⁶ School of Physics and Astronomy, University of Edinburgh, Edinburgh, UK.
⁴⁷ Department of Physics, University of Oxford, Oxford, UK.
⁴⁸ Henryk Niewodniczanski Institute of Nuclear Physics, Polish Academy of Sciences, Kraków, Poland.
⁴⁹ Imperial College London, London, UK.
⁵⁰ Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania.
⁵¹ Massachusetts Institute of Technology, Cambridge, MA USA.
⁵² NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine.
⁵³ STFC Rutherford Appleton Laboratory, Didcot, UK.
⁵⁴ Institute for Nuclear Research of the Russian Academy of Sciences (INR RAN), Moscow, Russia.
⁵⁵ Faculty of Physics and Applied Computer Science, AGH-University of Science and Technology, Kraków, Poland.
⁵⁶ Sezione INFN di Milano, Milan, Italy.
⁵⁷ Institut für Physik, Universität Rostock, Rostock, Germany.
⁵⁸ Nikhef National Institute for Subatomic Physics, VU University Amsterdam, Amsterdam, The Netherlands.
⁵⁹ National Research Centre Kurchatov Institute, Moscow, Russia.
⁶⁰ Instituto de Fisica Corpuscular (IFIC), Universitat de Valencia-CSIC, Valencia, Spain.
⁶¹ School of Physics, University College Dublin, Dublin, Ireland.
⁶² Institute for Nuclear Research of the National Academy of Sciences (KINR), Kyiv, Ukraine.
⁶³ KVI, University of Groningen, Groningen, The Netherlands.
⁶⁴ Sezione INFN di Bari, Bari, Italy.
⁶⁵ Celal Bayar University, Manisa, Turkey.
⁶⁶ Institute of Particle Physics, Central China Normal University, Wuhan, Hubei China.

PMID: 26190939
PMCID: PMC4498677
DOI: 10.1140/epjc/s10052-015-3502-x

Abstract

The production of the [Formula: see text] state in proton-proton collisions is probed via its decay to the [Formula: see text] final state with the LHCb detector, in the rapidity range [Formula: see text] and in the meson transverse-momentum range [Formula: see text]. The cross-section for prompt production of [Formula: see text] mesons relative to the prompt [Formula: see text] cross-section is measured, for the first time, to be [Formula: see text] at a centre-of-mass energy [Formula: see text] using data corresponding to an integrated luminosity of 0.7 fb[Formula: see text], and [Formula: see text] at [Formula: see text] using 2.0 fb[Formula: see text]. The uncertainties quoted are, in order, statistical, systematic, and that on the ratio of branching fractions of the [Formula: see text] and [Formula: see text] decays to the [Formula: see text] final state. In addition, the inclusive branching fraction of [Formula: see text]-hadron decays into [Formula: see text] mesons is measured, for the first time, to be [Formula: see text], where the third uncertainty includes also the uncertainty on the [Formula: see text] inclusive branching fraction from [Formula: see text]-hadron decays. The difference between the [Formula: see text] and [Formula: see text] meson masses is determined to be [Formula: see text].

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Figures

**Fig. 1**
Proton–antiproton invariant mass spectrum for candidates originating from a secondary vertex and reconstructed in $\sqrt{s} = 7 TeV$ and $\sqrt{s} = 8 TeV$ data. The *solid blue line* represents the best-fit curve, the *long-dashed red line* corresponds to the $η_{c} (1 S)$ signal, the *dashed-dotted cyan line* corresponds to the $J / ψ$ signal, and the *dashed magenta line* corresponds to the small contribution from $J / ψ \to p \bar{p} π^{0}$ decays with the pion unreconstructed. The *dotted blue line* corresponds to the combinatorial background. The distribution of the difference between data points and the fit function is shown in the *bottom panel*

**Fig. 2**
Proton–antiproton invariant mass spectrum for candidates originating from a primary vertex (*upper panel* in each plot), and distribution of differences between data and the background distribution resulting from the fit (*lower panel* in each plot), in data at a $\sqrt{s} = 7 TeV$ and b $\sqrt{s} = 8 TeV$ centre-of-mass energies. Distributions on the *upper panels* are zero-suppressed

**Fig. 3**
Transverse momentum spectra for $η_{c} (1 S)$ mesons (*red filled circles*). The $p_{T}$ spectra of $J / ψ$ from Refs. [–3] are shown for comparison as *blue open circles*. Prompt production spectra are shown on a and c for data collected at $\sqrt{s} = 7 TeV$ and $\sqrt{s} = 8 TeV$ , respectively. The spectra from inclusive charmonium production in $b$ -hadron decays are shown on b and d for data collected at $\sqrt{s} = 7 TeV$ and $\sqrt{s} = 8 TeV$ , respectively

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References

1. LHCb collaboration, R. Aaij et al., Measurement of $J / ψ$ production in $p p$ collisions at $\sqrt{s} = 7$ TeV. Eur. Phys. J. C 71, 1645 (2011). arXiv:1103.0423
1. LHCb collaboration, R. Aaij et al., Measurement of $J / ψ$ polarization in $p p$ collisions at $\sqrt{s} = 7$ TeV. Eur. Phys. J. C 73, 2631 (2013). arXiv:1307.6379 - PMC - PubMed
1. LHCb collaboration, R. Aaij et al., Production of $J / ψ$ and $Υ$ mesons in $p p$ collisions at $\sqrt{s} = 8$ TeV. JHEP 06, 064 (2013). arXiv:1304.6977
1. CMS collaboration, S. Chatrchyan et al., $J / ψ$ and $ψ (2 S)$ production in $p p$ collisions at $\sqrt{s} = 7 TeV$ . JHEP 02, 011 (2012). arXiv:1111.1557
1. ATLAS collaboration, G. Aad et al., Measurement of the differential cross-sections of inclusive, prompt and non-prompt $J / ψ$ production in proton–proton collisions at $\sqrt{s} = 7 TeV$ . Nucl. Phys. B 850, 387 (2011). arXiv:1104.3038

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Measurement of the [Formula: see text] production cross-section in proton-proton collisions via the decay [Formula: see text]

Affiliations

Measurement of the [Formula: see text] production cross-section in proton-proton collisions via the decay [Formula: see text]

Authors

Affiliations

Abstract

Figures

References

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