Observation of charmonium pairs produced exclusively in pp collisions

Aaij R.; Adeva B.; Adinolfi M.; Affolder A.; Ajaltouni Z.; Akar S.; Albrecht J.; Alessio F.; Alexander M.; Ali S.; Alkhazov G.; Alvarez Cartelle P.; Alves A.A., Jr.; Amato S.; Amerio S.; Amhis Y.; An L.; Anderlini L.; Anderson J.; Andreassen R.; Andreotti M.; Andrews J.E.; Appleby R.B.; Aquines Gutierrez O.; Archilli F.; Artamonov A.; Artuso M.; Aslanides E.; Auriemma G.; Baalouch M.; Bachmann S.; Back J.J.; Badalov A.; Baldini W.; Barlow R.J.; Barschel C.; Barsuk S.; Barter W.; Batozskaya V.; Battista V.; Bay A.; Beaucourt L.; Beddow J.; Bedeschi F.; Bediaga I.; Belogurov S.; Belous K.; Belyaev I.; Ben Haim E.; Bencivenni G.; Benson S.; Benton J.; Berezhnoy A.; Bernet R.; Bettler M.O.; Van Beuzekom M.; Bien A.; Bifani S.; Bird T.; Bizzeti A.; Bjørnstad P.M.; Blake T.; Blanc F.; Blouw J.; Blusk S.; Bocci V.; Bondar A.; Bondar N.; Bonivento W.; Borghi S.; Borgia A.; Borsato M.; Bowcock T.J.V.; Bowen E.; Bozzi C.; Brambach T.; Van Den Brand J.; Bressieux J.; Brett D.; Britsch M.; Britton T.; Brodzicka J.; Brook N.H.; Brown H.; Bursche A.; Busetto G.; Buytaert J.; Cadeddu S.; Calabrese R.; Calvi M.; Calvo Gomez M.; Campana P.; Campora Perez D.; Carbone A.; Carboni G.; Cardinale R.; Cardini A.; Carson L.; Carvalho Akiba K.; Casse G.; Cassina L.; Castillo Garcia L.; Cattaneo M.; Cauet Ch.; Cenci R.; Charles M.; Charpentier Ph.; Chefdeville M.; Chen S.; Cheung S.F.; Chiapolini N.; Chrzaszcz M.; Ciba K.; Cid Vidal X.; Ciezarek G.; Clarke P.E.L.; Clemencic M.; Cliff H.V.; Closier J.; Coco V.; Cogan J.; Cogneras E.; Cojocariu L.; Collins P.; Comerma Montells A.; Contu A.; Cook A.; Coombes M.; Coquereau S.; Corti G.; Corvo M.; Counts I.; Couturier B.; Cowan G.A.; Craik D.C.; Cruz Torres M.; Cunliffe S.; Currie R.; D'Ambrosio C.; Dalseno J.; David P.; David P.N.Y.; Davis A.; De Bruyn K.; De Capua S.; De Cian M.; De Miranda J.M.; De Paula L.; De Silva W.; De Simone P.; Decamp D.; Deckenhoff M.; Del Buono L.; Déléage N.; Derkach D.; Deschamps O.; Dettori F.; Di Canto A.; Dijkstra H.; Donleavy S.; Dordei F.; Dorigo M.; Dosil Suárez A.; Dossett D.; Dovbnya A.; Dreimanis K.; Dujany G.; Dupertuis F.; Durante P.; Dzhelyadin R.; Dziurda A.; Dzyuba A.; Easo S.; Egede U.; Egorychev V.; Eidelman S.; Eisenhardt S.; Eitschberger U.; Ekelhof R.; Eklund L.; El Rifai I.; Elsasser Ch.; Ely S.; Esen S.; Evans H.M.; Evans T.; Falabella A.; Färber C.; Farinelli C.; Farley N.; Farry S.; Fay R.F.; Ferguson D.; Fernandez Albor V.; Ferreira Rodrigues F.; Ferro Luzzi M.; Filippov S.; Fiore M.; Fiorini M.; Firlej M.; Fitzpatrickv C.; Fiutowski T.; Fontana M.; Fontanelli F.; Forty R.; Francisco O.; Frank M.; Frei C.; Frosini M.; Fu J.; Furfaro E.; Gallas Torreira A.; Galli D.; Gallorini S.; Gambetta S.; Gandelman M.; Gandini P.; Gao Y.; García Pardi Nas J.; Garofoli J.; Garra Tico J.; Garrido L.; Gaspar C.; Gauld R.; Gavardi L.; Gavrilov G.; Geraci A.; Gersabeck E.; Gersabeck M.; Gershon T.; Ghez Ph.; Gianelle A.; Giani' S.; Gibson V.; Giubega L.; Gligorov V.V.; Göbel C.; Golubkov D.; Golutvin A.; Gomes A.; Gotti C.; Grabalosa Gándara M.; Graciani Diaz R.; Granado Cardoso L.A.; Graugés E.; Graziani G.; Grecu A.; Greening E.; Gregson S.; Griffith P.; Grillo L.; Grünberg O.; Gui B.; Gushchin E.; Guz Yu.; Gys T.; Hadjivasiliou C.; Haefeli G.; Haen C.; Haines S.C.; Hall S.; Hamilton B.; Hampson T.; Han X.; Hansmann Menzemer S.; Harnew N.; Harnew S.T.; Harrison J.; He J.; Head T.; Heijne V.; Hennessy K.; Henrard P.; Henry L.; Hernando Morata J.A.; Van Herwijnen E.; Heß M.; Hicheur A.; Hill D.; Hoballah M.; Hombach C.; Hulsbergen W.; Hunt P.; Hussain N.; Hutchcroft D.; Hynds D.; Idzik M.; Ilten P.; Jacobsson R.; Jaeger A.; Jalocha J.; Jans E.; Jaton P.; Jawahery A.; Jing F.; John M.; Johnson D.; Jones C.R.; Joram C.; Jost B.; Jurik N.; Kaballo M.; Kandybei S.; Kanso W.; Karacson M.; Karbach T.M.; Karodia S.; Kelsey M.; Kenyon I.R.; Ketel T.; Khanji B.; Khurewathanakul C.; Klaver S.; Klimaszewski K.; Kochebina O.; Kolpin M.; Komarov I.; Koopman R.F.; Koppenburg P.; Korolev M.; Kozlinskiy A.; Kravchuk L.; Kreplin K.; Kreps M.; Krocker G.; Krokovny P.; Kruse F.; Kucewicz W.; Kucharczyk M.; Kudryavtsev V.; Kurek K.; Kvaratskheliya T.; La Thi V.N.; Lacarrere D.; Lafferty G.; Lai A.; Lambert D.; Lambert R.W.; Lanfranchi G.; Langenbruch C.; Langhans B.; Latham T.; Lazzeroni C.; Le Gac R.; Van Leerdam J.; Lees J.P.; Lefèvre R.; Leflat A.; Lefranҫois J.; Leo S.; Leroy O.; Lesiak T.; Leverington B.; Li Y.; Likhomanenko T.; Liles M.; Lindner R.; Linn C.; Lionetto F.; Liu B.; Lohn S.; Longstaff I.; Lopes J.H.; Lopez March N.; Lowdon P.; Lu H.; Lucchesi D.; Luo H.; Lupato A.; Luppi E.; Lupton O.; Machefert F.; MacHikhiliyan I.V.; Maciuc F.; Maev O.; Malde S.; Malinin A.; Manca G.; Mancinelli G.; Mapelli A.; Maratas J.; Marchand J.F.; Marconi U.; Marin Benito C.; Marino P.; Märki R.; Marks J.; Martellotti G.; Martens A.; Martín Sánchez A.; Martinelli M.; Martinez Santos D.; Martinez Vidal F.; Martins Tostes D.; Massafferri A.; Matev R.; Mathe Z.; Matteuzzi C.; Mazurov A.; McCann M.; McCarthy J.; McNab A.; McNulty R.; McSkelly B.; Meadows B.; Meier F.; Meissner M.; Merk M.; Milanes D.A.; Minard M.N.; Moggi N.; Molina Rodriguez J.; Monteil S.; Morandin M.; Morawski P.; Mordà A.; Morello M.J.; Moron J.; Morris A.B.; Mountain R.; Muheim F.; Müller K.; Mussini M.; Muster B.; Naik P.; Nakada T.; Nandakumar R.; Nasteva I.; Needham M.; Neri N.; Neubert S.; Neufeld N.; Neuner M.; Nguyen A.D.; Nguyen T.D.; Nguyen Mau C.; Nicol M.; Niess V.; Niet R.; Nikitin N.; Nikodem T.; Novoselov A.; O'Hanlon D.P.; Oblakowska Mucha A.; Obraztsov V.; Oggero S.; Ogilvy S.; Okhrimenko O.; Oldeman R.; Onderwater G.; Orlandea M.; Osorio Rodrigues B.; Otalora Goicochea J.M.; Owen P.; Oyanguren A.; Pal B.K.; Palano A.; Palombo F.; Palutan M.; Panman J.; Papanestis A.; Pappagallo M.; Pappalardo L.L.; Parkes C.; Parkinson C.J.; Passaleva G.; Patel G.D.; Patel M.; Patrignani C.; Pazos Alvarez A.; Pearce A.; Pellegrino A.; Pepe Altarelli M.; Perazzini S.; Perez Trigo E.; Perret P.; Perrin Terrin M.; Pescatore L.; Pesen E.; Petridis K.; Petrolini A.; Picatoste Olloqui E.; Pietrzyk B.; Pilař T.; Pinci D.; Pistone A.; Playfer S.; Plo Casasus M.; Polci F.; Poluektov A.; Polycarpo E.; Popov A.; Popov D.; Popovici B.; Potterat C.; Price E.; Prisciandaro J.; Pritchard A.; Prouve C.; Pugatch V.; Puig Navarro A.; Punzi G.; Qian W.; Rachwal B.; Rademacker J.H.; Rakotomiaramanana B.; Rama M.; Rangel M.S.; Raniuk I.; Rauschmayr N.; Raven G.; Reichert S.; Reid M.M.; Dos Reis A.C.; Ricciardi S.; Richards S.; Rihl M.; Rinnert K.; Rives Molina V.; Roa Romero D.A.; Robbe P.; Rodrigues A.B.; Rodrigues E.; Rodriguez Perez P.; Roiser S.; Romanovsky V.; Romero Vidal A.; Rotondo M.; Rouvinet J.; Ruf T.; Ruiz H.; Ruiz Valls P.; Saborido Silva J.J.; Sagidova N.; Sail P.; Saitta B.; Salustino Guimaraes V.; Sanchez Mayordomo C.; Sanmartin Sedes B.; Santacesaria R.; Santamarina Rios C.; Santovetti E.; Sarti A.; Satriano C.; Satta A.; Saunders D.M.; Savrie M.; Savrina D.; Schiller M.; Schindler H.; Schlupp M.; Schmelling M.; Schmidt B.; Schneider O.; Schopper A.; Schune M.H.; Schwemmer R.; Sciascia B.; Sciubba A.; Seco M.; Semennikov A.; Sepp I.; Serra N.; Serrano J.; Sestini L.; Seyfert P.; Shapkin M.; Shapoval I.; Shcheglov Y.; Shears T.; Shekhtman L.; Shevchenko V.; Shires A.; Silva Coutinho R.; Simi G.; Sirendi M.; Skidmore N.; Skwarnicki T.; Smith N.A.; Smith E.; Smith J.; Smith M.; Snoek H.; Sokoloff M.D.; Soler F.J.P.; Soomro F.; Souza D.; Souza De Paula B.; Spaan B.; Sparkes A.; Spradlin P.; Sridharan S.; Stagni F.; Stahl M.; Stahl S.; Steinkamp O.; Stenyakin O.; Stevenson S.; Stoica S.; Stone S.; Storaci B.; Stracka S.; Straticiuc M.; Straumann U.; Stroili R.; Subbiah V.K.; Sun L.; Sutcliffe W.; Swientek K.; Swientek S.; Syropoulos V.; Szczekowski M.; Szczypka P.; Szilard D.; Szumlak T.; T'Jampens S.; Teklishyn M.; Tellarini G.; Teubert F.; Thomas C.; Thomas E.; Van Tilburg J.; Tisserand V.; Tobin M.; Tolk S.; Tomassetti L.; Tonelli D.; Topp Joergensen S.; Torr N.; Tournefier E.; Tourneur S.; Tran M.T.; Tresch M.; Tsaregorodtsev A.; Tsopelas P.; Tuning N.; Ubeda Garcia M.; Ukleja A.; Ustyuzhanin A.; Uwer U.; Vagnoni V.; Valenti G.; Vallier A.; Vazquez Gomez R.; Vazquez Regueiro P.; Vázquez Sierra C.; Vecchi S.; Velthuis J.J.; Veltri M.; Veneziano G.; Vesterinen M.; Viaud B.; Vieira D.; Vieites Diaz M.; Vilasis Cardona X.; Vollhardt A.; Volyanskyy D.; Voong D.; Vorobyev A.; Vorobyev V.; Voß C.; Voss H.; De Vries J.A.; Waldi R.; Wallace C.; Wallace R.; Walsh J.; Wandernoth S.; Wang J.; Ward D.R.; Watson N.K.; Websdale D.; Whitehead M.; Wicht J.; Wiedner D.; Wilkinson G.; Williams M.P.; Williams M.; Wilson F.F.; Wimberley J.; Wishahi J.; Wislicki W.; Witek M.; Wormser G.; Wotton S.A.; Wright S.; Wu S.; Wyllie K.; Xie Y.; Xing Z.; Xu Z.; Yang Z.; Yuan X.; Yushchenko O.; Zangoli M.; Zavertyaev M.; Zhang L.; Zhang W.C.; Zhang Y.; Zhelezov A.; Zhokhov A.; Zhong L.; Zvyagin A.

Observation of charmonium pairs produced exclusively in pp collisions

dc.contributor.author	Aaij R.
dc.contributor.author	Adeva B.
dc.contributor.author	Adinolfi M.
dc.contributor.author	Affolder A.
dc.contributor.author	Ajaltouni Z.
dc.contributor.author	Akar S.
dc.contributor.author	Albrecht J.
dc.contributor.author	Alessio F.
dc.contributor.author	Alexander M.
dc.contributor.author	Ali S.
dc.contributor.author	Alkhazov G.
dc.contributor.author	Alvarez Cartelle P.
dc.contributor.author	Alves A.A., Jr.
dc.contributor.author	Amato S.
dc.contributor.author	Amerio S.
dc.contributor.author	Amhis Y.
dc.contributor.author	An L.
dc.contributor.author	Anderlini L.
dc.contributor.author	Anderson J.
dc.contributor.author	Andreassen R.
dc.contributor.author	Andreotti M.
dc.contributor.author	Andrews J.E.
dc.contributor.author	Appleby R.B.
dc.contributor.author	Aquines Gutierrez O.
dc.contributor.author	Archilli F.
dc.contributor.author	Artamonov A.
dc.contributor.author	Artuso M.
dc.contributor.author	Aslanides E.
dc.contributor.author	Auriemma G.
dc.contributor.author	Baalouch M.
dc.contributor.author	Bachmann S.
dc.contributor.author	Back J.J.
dc.contributor.author	Badalov A.
dc.contributor.author	Baldini W.
dc.contributor.author	Barlow R.J.
dc.contributor.author	Barschel C.
dc.contributor.author	Barsuk S.
dc.contributor.author	Barter W.
dc.contributor.author	Batozskaya V.
dc.contributor.author	Battista V.
dc.contributor.author	Bay A.
dc.contributor.author	Beaucourt L.
dc.contributor.author	Beddow J.
dc.contributor.author	Bedeschi F.
dc.contributor.author	Bediaga I.
dc.contributor.author	Belogurov S.
dc.contributor.author	Belous K.
dc.contributor.author	Belyaev I.
dc.contributor.author	Ben Haim E.
dc.contributor.author	Bencivenni G.
dc.contributor.author	Benson S.
dc.contributor.author	Benton J.
dc.contributor.author	Berezhnoy A.
dc.contributor.author	Bernet R.
dc.contributor.author	Bettler M.O.
dc.contributor.author	Van Beuzekom M.
dc.contributor.author	Bien A.
dc.contributor.author	Bifani S.
dc.contributor.author	Bird T.
dc.contributor.author	Bizzeti A.
dc.contributor.author	Bjørnstad P.M.
dc.contributor.author	Blake T.
dc.contributor.author	Blanc F.
dc.contributor.author	Blouw J.
dc.contributor.author	Blusk S.
dc.contributor.author	Bocci V.
dc.contributor.author	Bondar A.
dc.contributor.author	Bondar N.
dc.contributor.author	Bonivento W.
dc.contributor.author	Borghi S.
dc.contributor.author	Borgia A.
dc.contributor.author	Borsato M.
dc.contributor.author	Bowcock T.J.V.
dc.contributor.author	Bowen E.
dc.contributor.author	Bozzi C.
dc.contributor.author	Brambach T.
dc.contributor.author	Van Den Brand J.
dc.contributor.author	Bressieux J.
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dc.contributor.author	Britsch M.
dc.contributor.author	Britton T.
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dc.contributor.author	Cheung S.F.
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dc.contributor.author	Chrzaszcz M.
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dc.contributor.author	Cliff H.V.
dc.contributor.author	Closier J.
dc.contributor.author	Coco V.
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dc.contributor.author	Collins P.
dc.contributor.author	Comerma Montells A.
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dc.contributor.author	Cook A.
dc.contributor.author	Coombes M.
dc.contributor.author	Coquereau S.
dc.contributor.author	Corti G.
dc.contributor.author	Corvo M.
dc.contributor.author	Counts I.
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dc.contributor.author	Cowan G.A.
dc.contributor.author	Craik D.C.
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dc.contributor.author	Currie R.
dc.contributor.author	D'Ambrosio C.
dc.contributor.author	Dalseno J.
dc.contributor.author	David P.
dc.contributor.author	David P.N.Y.
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dc.contributor.author	De Capua S.
dc.contributor.author	De Cian M.
dc.contributor.author	De Miranda J.M.
dc.contributor.author	De Paula L.
dc.contributor.author	De Silva W.
dc.contributor.author	De Simone P.
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dc.contributor.author	Deckenhoff M.
dc.contributor.author	Del Buono L.
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dc.contributor.author	Derkach D.
dc.contributor.author	Deschamps O.
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dc.contributor.author	Dijkstra H.
dc.contributor.author	Donleavy S.
dc.contributor.author	Dordei F.
dc.contributor.author	Dorigo M.
dc.contributor.author	Dosil Suárez A.
dc.contributor.author	Dossett D.
dc.contributor.author	Dovbnya A.
dc.contributor.author	Dreimanis K.
dc.contributor.author	Dujany G.
dc.contributor.author	Dupertuis F.
dc.contributor.author	Durante P.
dc.contributor.author	Dzhelyadin R.
dc.contributor.author	Dziurda A.
dc.contributor.author	Dzyuba A.
dc.contributor.author	Easo S.
dc.contributor.author	Egede U.
dc.contributor.author	Egorychev V.
dc.contributor.author	Eidelman S.
dc.contributor.author	Eisenhardt S.
dc.contributor.author	Eitschberger U.
dc.contributor.author	Ekelhof R.
dc.contributor.author	Eklund L.
dc.contributor.author	El Rifai I.
dc.contributor.author	Elsasser Ch.
dc.contributor.author	Ely S.
dc.contributor.author	Esen S.
dc.contributor.author	Evans H.M.
dc.contributor.author	Evans T.
dc.contributor.author	Falabella A.
dc.contributor.author	Färber C.
dc.contributor.author	Farinelli C.
dc.contributor.author	Farley N.
dc.contributor.author	Farry S.
dc.contributor.author	Fay R.F.
dc.contributor.author	Ferguson D.
dc.contributor.author	Fernandez Albor V.
dc.contributor.author	Ferreira Rodrigues F.
dc.contributor.author	Ferro Luzzi M.
dc.contributor.author	Filippov S.
dc.contributor.author	Fiore M.
dc.contributor.author	Fiorini M.
dc.contributor.author	Firlej M.
dc.contributor.author	Fitzpatrickv C.
dc.contributor.author	Fiutowski T.
dc.contributor.author	Fontana M.
dc.contributor.author	Fontanelli F.
dc.contributor.author	Forty R.
dc.contributor.author	Francisco O.
dc.contributor.author	Frank M.
dc.contributor.author	Frei C.
dc.contributor.author	Frosini M.
dc.contributor.author	Fu J.
dc.contributor.author	Furfaro E.
dc.contributor.author	Gallas Torreira A.
dc.contributor.author	Galli D.
dc.contributor.author	Gallorini S.
dc.contributor.author	Gambetta S.
dc.contributor.author	Gandelman M.
dc.contributor.author	Gandini P.
dc.contributor.author	Gao Y.
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dc.contributor.author	Garofoli J.
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dc.contributor.author	Garrido L.
dc.contributor.author	Gaspar C.
dc.contributor.author	Gauld R.
dc.contributor.author	Gavardi L.
dc.contributor.author	Gavrilov G.
dc.contributor.author	Geraci A.
dc.contributor.author	Gersabeck E.
dc.contributor.author	Gersabeck M.
dc.contributor.author	Gershon T.
dc.contributor.author	Ghez Ph.
dc.contributor.author	Gianelle A.
dc.contributor.author	Giani' S.
dc.contributor.author	Gibson V.
dc.contributor.author	Giubega L.
dc.contributor.author	Gligorov V.V.
dc.contributor.author	Göbel C.
dc.contributor.author	Golubkov D.
dc.contributor.author	Golutvin A.
dc.contributor.author	Gomes A.
dc.contributor.author	Gotti C.
dc.contributor.author	Grabalosa Gándara M.
dc.contributor.author	Graciani Diaz R.
dc.contributor.author	Granado Cardoso L.A.
dc.contributor.author	Graugés E.
dc.contributor.author	Graziani G.
dc.contributor.author	Grecu A.
dc.contributor.author	Greening E.
dc.contributor.author	Gregson S.
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dc.contributor.author	Grünberg O.
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dc.contributor.author	Gushchin E.
dc.contributor.author	Guz Yu.
dc.contributor.author	Gys T.
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dc.contributor.author	Haefeli G.
dc.contributor.author	Haen C.
dc.contributor.author	Haines S.C.
dc.contributor.author	Hall S.
dc.contributor.author	Hamilton B.
dc.contributor.author	Hampson T.
dc.contributor.author	Han X.
dc.contributor.author	Hansmann Menzemer S.
dc.contributor.author	Harnew N.
dc.contributor.author	Harnew S.T.
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dc.contributor.author	He J.
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dc.contributor.author	Heijne V.
dc.contributor.author	Hennessy K.
dc.contributor.author	Henrard P.
dc.contributor.author	Henry L.
dc.contributor.author	Hernando Morata J.A.
dc.contributor.author	Van Herwijnen E.
dc.contributor.author	Heß M.
dc.contributor.author	Hicheur A.
dc.contributor.author	Hill D.
dc.contributor.author	Hoballah M.
dc.contributor.author	Hombach C.
dc.contributor.author	Hulsbergen W.
dc.contributor.author	Hunt P.
dc.contributor.author	Hussain N.
dc.contributor.author	Hutchcroft D.
dc.contributor.author	Hynds D.
dc.contributor.author	Idzik M.
dc.contributor.author	Ilten P.
dc.contributor.author	Jacobsson R.
dc.contributor.author	Jaeger A.
dc.contributor.author	Jalocha J.
dc.contributor.author	Jans E.
dc.contributor.author	Jaton P.
dc.contributor.author	Jawahery A.
dc.contributor.author	Jing F.
dc.contributor.author	John M.
dc.contributor.author	Johnson D.
dc.contributor.author	Jones C.R.
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dc.contributor.author	Jost B.
dc.contributor.author	Jurik N.
dc.contributor.author	Kaballo M.
dc.contributor.author	Kandybei S.
dc.contributor.author	Kanso W.
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dc.contributor.author	Kochebina O.
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dc.date.accessioned	2024-07-22T08:14:52Z
dc.date.available	2024-07-22T08:14:52Z
dc.date.issued	2014
dc.description.abstract	A search is performed for the central exclusive production of pairs of charmonia produced in proton-proton collisions. Using data corresponding to an integrated luminosity of 3 fb -1 collected at centre-of-mass energies of 7 and 8 TeV, J/ψJ/ψ and J/ψψ (2S) pairs are observed, which have been produced in the absence of any other activity inside the LHCb acceptance that is sensitive to charged particles in the pseudorapidity ranges (-3.5, -1.5) and (1.5, 5.0). Searches are also performed for pairs of P-wave charmonia and limits are set on their production. The cross-sections for these processes, where the dimeson system has a rapidity between 2.0 and 4.5, are measured to be σ J/ψJ/ψ = 58 ± 10(stat) ± 6(syst) pb, σ J/ψψ(2S) = 63 -18 +27 (stat) ± 10(syst) pb, σ ψ(2S)ψ(2S) < 237 pb, σ χc0χc0 < 69 nb, σ χc1χc1 < 45 pb, σ χc2χc2 141 pb, where the upper limits are set at the 90% confidence level. The measured J/ψJ/ψ and J/ψψ (2S) cross-sections are consistent with theoretical expectations. © CERN 2014 On behalf of the LHCb Collaboration.
dc.identifier.DOI-ID	10.1088/0954-3899/41/11/115002
dc.identifier.issn	09543899
dc.identifier.uri	http://akademikarsiv.cbu.edu.tr:4000/handle/123456789/16664
dc.language.iso	English
dc.publisher	Institute of Physics Publishing
dc.rights	All Open Access; Hybrid Gold Open Access
dc.title	Observation of charmonium pairs produced exclusively in pp collisions
dc.type	Article

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Observation of charmonium pairs produced exclusively in pp collisions

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