Search for the decay D 0 → π + π − μ +
LHCb collaboration,R. Aaij,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,S. Amato,S. Amerio,Y. Amhis,L. Anderlini,J. Anderson,R. Andreassen,J. E. Andrews,R. B. Appleby,O. Aquines Gutierrez,F. Archilli,А. Артамонов,M. Artuso,E. Aslanides,G. Auriemma,M. Baalouch,S. Bachmann,J. J. Back,A. Badalov,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, G. Bencivenni,S. Benson,J. Benton,A. Berezhnoy,R. Bernet,M. O. Bettler,M. van Beuzekom,A. Bień,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,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 García,M. Cattaneo,Ch. Cauet,R. Cenci,M. Charles,Ph. Charpentier,S. F. Cheung,N. Chiapolini,M. Chrząszcz,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,M. Cruz Torres,S. Cunliffe,R. Currie, C. D’Ambrosio, P. David,P. 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. Décamp,M. Deckenhoff,L. Del Buono,N. Déĺeage,Д. Деркач,O. Deschamps,F. Dettori,A. Di Canto,H. Dijkstra,M. Dogaru,S. Donleavy,F. Dordei,A. Dosil Suárez,D. Dossett,A. Dovbnya,F. Dupertuis,P. Durante,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. Elsässer,A. Falabella,C. Färber,C. Farinelli,S. Farry,D. Ferguson,V. Fernandez Albor,F. Ferreira Rodrigues,M. Ferro‐Luzzi,S. Filippov,M. Fiore,C. Fitzpatrick,M. Fontana,F. Fontanelli,R. Forty,O. De Aguiar Francisco,M. Frank,C. Frei,M. Frosini,E. Furfaro,A. Gallas Torreira,D. Galli,M. Gandelman,P. Gandini,Y. Gao,J. Garofoli,P. Garosi,J. Garra Ticó,L. Garrido,C. Gaspar,R. Gauld,E. Gersabeck,M. Gersabeck,T. Gershon, Ph. Ghez,V. Gibson, L. Giubega,V. V. Gligorov,C. Göbel,D. Golubkov,A. Golutvin,A. Gomes,P. A. Gorbounov,Hamish Gordon,M. Grabalosa Gándara,R. Graciani Diaz,L. A. Granado Cardoso,E. Graugés, G. Graziani,A. Grecu,E. Greening,S. Gregson,P. Griffith,L. Grillo,O. Grünberg,B. Gui,E. Gushchin,Yu. Guz,T. Gys,C. Hadjivasiliou,G. Haefeli,C. Haen,S. C. Haines,S. Hall,B. Hamilton,T. Hampson,S. Hansmann-Menzemer,N. Harnew,S. T. Harnew,J. Harrison,T. Hartmann,Jun He,T. Head,V. Heijne,K. Hennessy,P. Henrard,J. A. Hernando Morata,E. van Herwijnen,M. Heß,A. Hicheur,E. Hicks,D. Hill,M. Hoballah,C. Hombach,W. Hulsbergen,P. Hunt,T. Huse,N. Hussain,D. Hutchcroft,D. Hynds,В. Яковенко,M. Idzik,P. Ilten,R. Jacobsson,A. Jaeger,E. Jans,P. Jaton,A. Jawahery,F. Jing,M. John,D. Johnson,C. R. Jones, C. Joram,B. Jost,M. Kaballo,S. Kandybei,W. Kanso,M. Karacson,T. M. Karbach,I. R. Kenyon,T. Ketel,B. Khanji,O. Kochebina,I. Komarov,R. F. Koopman,P. Koppenburg,М. Королев,A. Kozlinskiy,L. Kravchuk,K. Kreplin,M. Kreps,G. Krocker,P. Krokovny,F. Kruse,M. Kucharczyk,V. Kudryavtsev,K. Kurek,T. Kvaratskheliya,V. N. La Thi,D. Lacarrère,G. D. 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,N. López-March,H. Lu,D. Lucchesi,J. Luisier,H. Luo,O. Lupton,F. Machefert,I. V. Machikhiliyan,F. Maciuc,O. Maev,S. Malde,G. Manca,G. Mancinelli,J. Maratas,U. Marconi,P. Marino,R. Märki,J. Marks,G. Martellotti,A. Martens,A. Martín Sánchez,M. Martinelli,D. Martínez Santos,D. Martins Tostes,A. Martynov,A. Massafferri,R. Matev,Z. Máthé,C. Matteuzzi,E. Maurice,A. Mazurov,J. McCarthy,A. McNab,R. McNulty,B. McSkelly,B. Meadows,F. Meier,M. Meissner,M. Merk,D. A. Milanes,M.-N. Minard,J. Molina Rodriguez,S. Monteil,D. Moran,P. Morawski,A. Mordà,M. J. Morello,R. Mountain,I. Mous,F. Muheim,K. Müller,R. Mureşan,B. Muryn,B. Muster,P. Naik,T. Nakada,R. Nandakumar,I. Nasteva,M. Needham,S. Neubert,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. Obłąkowska-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 Álvarez,A. Pearce,A. Pellegrino,G. Penso,M. Pepe Altarelli,S. Perazzini,E. Pérez Trigo,A. Pérez-Calero Yzquierdo,P. Perret,M. Perrin-Terrin,L. Pescatore,E. Pesen,G. Pessina,K. Petridis,A. Petrolini,A. Phan,E. Picatoste Olloqui,B. Pietrzyk,T. Pilař,D. Pinci,S. Playfer,M. Pló Casasús, F. Polci,G. Polok,A. Poluektov,E. Polycarpo,A. Popov,D. Popov,B. Popovici,C. Potterat,A. Powell,J. Prisciandaro,A. Pritchard,C. Prouvé,V. Pugatch,A. Puig Navarro,G. Punzi,W. Qian,B. Rachwał,J. H. Rademacker,B. Rakotomiaramanana,M. S. Rangel,I. Raniuk,N. Rauschmayr,G. Raven,S. Redford,S. Reichert,M. M. Reid,A. C. dos Reis,S. Ricciardi,A. Richards,K. Rinnert,V. Rives Molina,D. A. Roa Romero,P. Robbe,D. A. Roberts,A. B. Rodrigues,E. Rodrigues,P. Rodríguez Pérez,S. Roiser,V. Romanovsky,A. Romero Vidal,M. Rotondo,J. Rouvinet,T. Ruf,F. Ruffini,H. Ruiz,P. Ruiz Valls,G. Sabatino,J. J. Saborido Silva,N. Sagidova,P. Sail,B. Saitta,V. Salustino Guimarães,B. Sanmartin Sedes,R. Santacesaria,C. Santamarina Ríos,E. Santovetti,M. Sapunov,A. Sarti,C. Satriano,A. Satta,M. Savrié,D. Savrina,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,Y. Shcheglov,T. Shears,L. Shekhtman,О. Shevchenko,V. Shevchenko,A. Shires,R. Silva Coutinho, M. Sirendi,N. Skidmore,T. Skwarnicki,N. Smith, E. Smith,E. Smith,J. G. 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. Stevenson,S. Stoica,S. Stone,B. Storaci,M. Straticiuc,U. Straumann,V. K. Subbiah,L. Sun,W. Sutcliffe,S. Swientek,V. Syropoulos,M. Szczekowski,P. Szczypka,D. Szilard,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,A. Ustyuzhanin,U. Uwer,V. Vagnoni,G. Valenti,A. Vallier,R. Vazquez Gomez,P. Vázquez Regueiro,C. Vázquez Sierra,S. Vecchi,J. J. Velthuis,M. Veltri,G. Veneziano,M. Vesterinen,B. Viaud,D. Vieira,X. Vilasís-Cardona,A. Vollhardt,D. Volyanskyy,D. Voong,A. Vorobyev,V. Vorobyev,C. Voß,H. Voss,R. Waldi,C. Wallace,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. Williams,M. Williams,F. F. Wilson,J. Wimberley,J. Wishahi,W. Wiślicki,M. Witek,G. Wormser,S. A. Wotton,S. Wright,S. Wu,K. Wyllie,Y. Xie,Z. Xing,Z. Yang,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
Physics Letters B（2014）
引用 6|浏览2
摘要
A search for the D0 to \pi+ \pi- \mu+ \mu- decay, where the muon pair does not originate from a resonance, is performed using proton-proton collision data corresponding to an integrated luminosity of 1.0 fb-1 recorded by the LHCb experiment at a centre-of-mass energy of 7 TeV. No signal is observed and an upper limit on the relative branching fraction with respect to the resonant decay mode D0 to \pi+ \pi- \phi(to \mu+ \mu-), under the assumption of a phase-space model, is found to be B(D0 to \pi+ \pi- mu+ mu-)/B(D0 to \pi+ \pi- \phi(to \mu+ \mu-)) < 0.96 at the 90% confidence level. The upper limit on the absolute branching fraction is evaluated to be B(D0 to \pi+ \pi- \mu+ \mu-) < 5.5 x 10-7 at 90% confidence level. This is the most stringent to date.
更多查看译文
关键词
decay,<mmlmath xmlnsmml=http//wwww3org/1998/math/mathml
AI 理解论文
溯源树
样例
生成溯源树，研究论文发展脉络
Chat Paper
正在生成论文摘要