Observation of the Ξb−→J/ψΛK− decay
Roel Aaij,Bernardo Adeva,Marco Adinolfi,Ziad Ajaltouni,Simon Akar,Johannes Albrecht,Federico Alessio,Michael Alexander,S. Ali, G. Alkhazov,P. Alvarez Cartelle,A. A. Alves,Sandra Amato,S. Amerio,Yasmine Amhis,Liupan An,Lucio Anderlini,Guido Andreassi,M. Andreotti,J. E. Andrews,R. B. Appleby,Flavio Archilli,P. d'Argent,J. Arnau Romeu,A. Artamonov,Marina Artuso,Elie Aslanides,G. Auriemma,M. Baalouch,Igor Babuschkin,Sebastian Bachmann,J. J. Back,A. Badalov,C. Baesso,Simon Baker,V. Balagura,W. Baldini,Roger Barlow,C. Barschel,Sergey Barsuk,William Barter,Fedor Baryshnikov,Mateusz Baszczyk,Varvara Batozskaya,Baasansuren Batsukh,Vincenzo Battista,A. Bay,L. Beaucourt,J. Beddow,Franco Bedeschi,Ignacio Bediaga,Lennaert Bel,Violaine Bellee,Nicoletta Belloli,K. Belous,Ivan Belyaev,E. Ben-Haim,G. Bencivenni,Sean Benson,Alexander Berezhnoy,Roland Bernet,A. Bertolin,Christopher Betancourt,Federico Betti,M. O. Bettler,M. van Beuzekom,Ia. Bezshyiko,Simone Bifani,Pierre Billoir,T. Bird,Alex Birnkraut,A. Bitadze,Andrea Bizzeti,Thomas Blake,F. Blanc,J. Blouw,S. Blusk,V. Bocci,T. Boettcher,A. Bondar,Nikolay Bondar,W. Bonivento,Igor Bordyuzhin,Alessio Borgheresi,Silvia Borghi,Maxim Borisyak,Martino Borsato,Francesco Bossu,M. Boubdir,T. J. V. Bowcock,E. Bowen,C. Bozzi,Svende Braun,Markward Britsch,T. Britton,Jolanta Brodzicka,Emma Buchanan,Christopher Burr,Albert Bursche,Jan Buytaert,Sandro Cadeddu,R. Calabrese,Marta Calvi,M. Calvo Gomez,Alessandro Camboni,P. Campana,D. Campora Perez,Lorenzo Capriotti,Angelo Carbone,G. Carboni,Roberta Cardinale,Alessandro Cardini,Paolo Carniti,L. Carson,K. Carvalho Akiba,Gianluigi Casse,L. Cassina,L. Castillo Garcia,Marco Cattaneo,G. Cavallero,R. Cenci,David Chamont,M. Charles,Ph. Charpentier,Georgios Chatzikonstantinidis,Maximilien Chefdeville,Sai-Juan Chen,S.-F. Cheung,Veronika Chobanova,M. Chrzaszcz,X. Cid Vidal,G. Ciezarek,P. E. L. Clarke,Marco Clemencic,H. V. Cliff,J. Closier,Victor Coco,Julien Cogan,E. Cogneras,Violetta Cogoni,Lucian Cojocariu,G. Collazuol,P. Collins,Albert Comerma-Montells,A. Contu,A. Cook,George Coombs,Samuel Coquereau,G. Corti,M. Corvo,C. M. Costa Sobral,B. Couturier,G. A. Cowan,Daniel Charles Craik,Andrew Crocombe,M. Cruz Torres,S. Cunliffe,R. Currie,Carmelo D'Ambrosio,F. Da Cunha Marinho,Elena Dall'Occo,Jeremy Dalseno,P. N. Y. David,Adam Davis,K. De Bruyn,S. De Capua,M. De Cian,J. M. De Miranda,L. De Paula,M. De Serio,P. De Simone,Cameron Thomas Dean,D. Decamp,M. Deckenhoff,L. Del Buono,Moritz Demmer,Adam Dendek,Denis Derkach,Olivier Deschamps,Francesco Dettori,B. Dey,A. Di Canto,Hans Dijkstra,Francesca Dordei,Marco Dorigo,A. Dosil Suárez,A. Dovbnya,Karlis Dreimanis,Laurent Dufour,Giulio Dujany,Kevin Dungs,P. Durante,R. Dzhelyadin,Agnieszka Dziurda,A. Dzyuba,N. Déléage,S. Easo,M. Ebert,U. Egede,V. Egorychev,S. Eidelman,Stephan Eisenhardt,U. Eitschberger,R. Ekelhof,Lars Eklund,Scott Ely,S. Esen,Hal Evans,Timothy Evans,A. Falabella,Nathanael Farley,S. Farry,RF Fay,Davide Fazzini,D. Ferguson,A. Fernandez Prieto,Frank Ferrari,F. Ferreira Rodrigues,M. Ferro-Luzzi,S. Filippov,R. A. Fini,M. Fiore,M. Fiorini,Miroslaw Firlej,C. Fitzpatrick,Tomasz Fiutowski,François Fleuret,Klaus Fohl,Marianna Fontana,F. Fontanelli,Dean Charles Forshaw,Roger Forty,V. Franco Lima,Markus Frank,Christoph Frei,J. Fu,Wolfgang Funk,E. Furfaro,Christian Färber,A. Gallas Torreira,D. Galli,S. Gallorini,Silvia Gambetta,M. Gandelman,Paolo Gandini,Y. N. Gao,L. M. Garcia Martin,J. García Pardiñas,J. Garra Tico,L. Garrido,Philip John Garsed,David Gascon,C. Gaspar,Laura Gavardi,Giulio Gazzoni,David Gerick,E. Gersabeck,Marco Gersabeck,T. J. Gershon,Ph. Ghez,S. Gianì,V. Gibson,Olivier Göran Girard,L. Giubega,Konstantin Gizdov,Vladimir Gligorov,Dmitry Golubkov,A. Golutvin,A. Gomes,I. V. Gorelov,Claudio Gotti,R. Graciani Diaz,L. A. Granado Cardoso,E. Grauges,Elena Graverini,G. Graziani,A. Grecu,P. Griffith,Lucia Grillo,B. R. Gruberg Cazon,O. Grünberg,E. Gushchin,Yu. Guz,T. Gys,C. Göbel,Thomas Hadavizadeh,C. Hadjivasiliou,G. Haefeli,C. Haen,S. C. Haines,B. Hamilton,X. Han,S. Hansmann-Menzemer,Neville Harnew,S. T. Harnew,J. Harrison,Mark Hatch,J. He,T. Head,Arno Heister,Karol Hennessy,P. Henrard,Louis Henry,E. van Herwijnen,M. Heß,A. Hicheur,D. Hill,C. Hombach,H. Hopchev,Wouter Hulsbergen,Thibaud Humair,Mikhail Hushchyn,D. E. Hutchcroft,Marek Idzik,Philip Ilten,R. Jacobsson,A. Jaeger,J. Jalocha,E. Jans,A. Jawahery,Feng Jiang,Malcolm John,D. R. Johnson,C. R. Jones,C. Joram,B. Jost,Nathan Jurik,S. Kandybei,M. Karacson,James Mwangi Kariuki,S. Karodia,Matthieu Kecke,Matthew Kelsey,Matthew Kenzie,Tjeerd Ketel,Egor Khairullin,Basem Khanji,C. Khurewathanakul,T. Kirn,S. Klaver,Konrad Klimaszewski,Serhii Koliiev,Michael Kolpin,I. Komarov,R. F. Koopman,Patrick Koppenburg,Alena Kosmyntseva,Anastasiia Kozachuk,Mohamad Kozeiha,L. Kravchuk,K. Kreplin,Michal Kreps,P. Krokovny,F. Kruse,Wojciech Krzemien,Wojciech Kucewicz,Marcin Kucharczyk,V. Kudryavtsev,Axel Kevin Kuonen,K. Kurek,T. Kvaratskheliya,D. Lacarrere,G. D. Lafferty,A. Lai,G. Lanfranchi,Christoph Langenbruch,T. E. Latham,C. Lazzeroni,R. Le Gac,J. van Leerdam,Alexander Leflat,J. Lefrançois,R. Lefèvre,Florian Lemaitre,E. Lemos Cid,Olivier Leroy,T. Lesiak, B. Leverington,Teng Li,Yang Li,Tatiana Likhomanenko,R. Lindner,C. Linn,Federica Lionetto,Xia-Ji Liu,David Loh,I. Longstaff,J. H. Lopes,D. Lucchesi,M. Lucio Martinez,H. Luo,Anna Lupato,E. Luppi,Oliver Lupton,A. Lusiani,Xiao-Rui Lyu,F. Machefert,F. Maciuc,O. Maev,Kevin Maguire,S. Malde,Alexander Malinin,Timofei Maltsev,G. Manca,G. Mancinelli,P. M. Manning,J. Maratas,Jean François Marchand,U. Marconi,C. Marin Benito,Matthieu Marinangeli,P. Marino,J. Marks,G. Martellotti,Morgan Martin,Maurizio Martinelli,D. Martinez Santos,F. Martinez Vidal,D. Martins Tostes,L. M. Massacrier,A. Massafferri,R. Matev,Abhijit Mathad,Z. Mathe,C. Matteuzzi,Andrea Mauri,Emilie Maurice,Brice Maurin,A. Mazurov,Michael McCann, A. McNab,R. McNulty,B. T. Meadows,F. Meier,M. Meissner,D. Melnychuk,M. Merk,Andrea Merli,Emanuele Michielin,D. A. Milanes,M.-N. Minard,Dominik Stefan Mitzel,Andrea Mogini,J. Molina Rodriguez,I. A. Monroy,S. Monteil,M. Morandin,P. Morawski,A. Mordà,M. J. Morello,Olga Morgunova,Jakub Moron,Antony Morris,R. Mountain,F. Muheim,Mick Mulder,M. Mussini,Dominik Müller,Janine Müller,K. Müller,Vanessa Müller,P. Naik,Tatsuya Nakada,R. Nandakumar,Anita Nandi,I. Nasteva,M. Needham,Nicola Neri,Sebastian Neubert,N. Neufeld,Max Neuner,T. D. Nguyen,Chung Nguyen-Mau,Simon Nieswand,R. Niet,Nikolay Nikitin,T. Nikodem,Alla Nogay,A. Novoselov,Daniel Patrick O'Hanlon,Agnieszka Oblakowska-Mucha,V. Obraztsov,S. Ogilvy,Rudolf Oldeman,C. J. G. Onderwater,J. M. Otalora Goicochea,A. Otto,Patrick Owen,A. Oyanguren,Preema Rennee Pais,A. Palano,F. Palombo,M. Palutan,A. Papanestis,M. Pappagallo,L. L. Pappalardo,William Parker,C. Parkes,G. Passaleva,A. Pastore,G. D. Patel,M. Patel,C. Patrignani,Alex Pearce,Antonio Pellegrino,Gianni Penso,M. Pepe Altarelli,Stefano Perazzini,P. Perret,L. Pescatore,Konstantinos Petridis,A. Petrolini,Alexey A. Petrov,Marco Petruzzo,E. Picatoste Olloqui,B. Pietrzyk,Malgorzata Pikies,D. Pinci,A. Pistone,Alessio Piucci,Vlad-Mihai Placinta,S. Playfer,M. Plo Casasus,Tuomas Poikela,F. Polci,Anton Poluektov,Ivan Polyakov,E. Polycarpo,Gabriela Johanna Pomery,A. Popov,Dmitry Popov,B. Popovici,Stanislav Poslavskii,C. Potterat,Eugenia Price,J. D. Price,Jessica Prisciandaro,A. Pritchard,C. Prouve,Valery Pugatch,A. Puig Navarro,G. Punzi,W. Qian,Renato Quagliani,B. Rachwal,Jonas Rademacker,M. Rama,M. Ramos Pernas,M. S. Rangel,I. Raniuk,Fedor Ratnikov,G. Raven,Federico Redi,Stefanie Reichert,A. C. dos Reis,C. Remon Alepuz,Victor Renaudin,S. Ricciardi,Sophie Richards,Mariana Rihl,Kurt Rinnert,V. Rives Molina,Patrick Robbe,A. B. Rodrigues,Eduardo Rodrigues,J. A. Rodriguez Lopez,P. Rodriguez Perez,A. Rogozhnikov,S. Roiser,Alexandra Paige Rollings,Vladimir Romanovskiy,A. Romero Vidal,John William Ronayne,M. Rotondo,Matthew Scott Rudolph,T. Ruf,P. Ruiz Valls,J. J. Saborido Silva,Elnur Sadykhov,N. Sagidova,Biagio Saitta,V. Salustino Guimaraes,C. Sanchez Mayordomo,B. Sanmartin Sedes,R. Santacesaria,C. Santamarina Rios,Marco Santimaria,E. Santovetti,Alessio Sarti,C. Satriano,A. Satta,Daniel Martin Saunders,D. Savrina,S. Schael,Margarete Schellenberg,Manuel Schiller,H. Schindler,M. Schlupp,M. Schmelling,Timon Schmelzer,B. Schmidt,O. Schneider,A. Schopper,Konstantin Schubert,Maxime Schubiger,M. H. Schune,R. Schwemmer,Barbara Sciascia,A. Sciubba,A. Semennikov,Antonino Sergi,Nicola Serra,J. Serrano,Lorenzo Sestini,Paul Seyfert,M. Shapkin,I. Shapoval,Y. Shcheglov,Tara Shears,L. Shekhtman,V. Shevchenko,Benedetto Gianluca Siddi,R. Silva Coutinho,L. Silva de Oliveira,G. Simi,S. Simone,M. Sirendi,N. Skidmore,Tomasz Skwarnicki,Eluned Smith,Iwan Thomas Smith,J. R. Smith,Mark Smith,H. L. Snoek,l. Soares Lavra,M. D. Sokoloff,F. J. P. Soler,B. Souza De Paula,B. Spaan,P. Spradlin,Srikanth Sridharan,F. Stagni,Marian Stahl,Stephen M. Stahl,Pavol Stefko,Slavomira Stefkova,O. Steinkamp,Simon Stemmle,Oleg Stenyakin,Holger Stevens,S. Stevenson,S. Stoica,Sheldon Stone,B. Storaci,S. Stracka,M. Straticiuc,U. Straumann,L. Sun,W. Sutcliffe,Krzysztof Swientek,V. Syropoulos,M. Szczekowski,Tomasz Szumlak,Stephane T'Jampens,Andrey Tayduganov,Tobias Tekampe,G. Tellarini,F. Teubert,E. Thomas,J. van Tilburg,Matthew James Tilley,V. Tisserand,M. Tobin,S. Tolk,L. Tomassetti,D. Tonelli,S. Topp-Joergensen,Francis Toriello,E. Tournefier,S. Tourneur,K. Trabelsi,Murdo Traill,M. T. Tran,M. Tresch,Ana Trisovic,A. Tsaregorodtsev,P. Tsopelas,Alison Tully,N. Tuning,A. Ukleja,Andrey Ustyuzhanin,U. Uwer,Claudia Vacca,Vincenzo Vagnoni,Andrea Valassi,Sebastien Valat,G. Valenti,R. Vazquez Gomez,P. Vazquez Regueiro,S. Vecchi,M. van Veghel,Jaap Velthuis,M. Veltri,Giovanni Veneziano,Aravindhan Venkateswaran,Maxime Vernet,M. Vesterinen,J. V. Viana Barbosa,B. Viaud,Daniel Vieira,M. Vieites Diaz,Harald Viemann,Xavier Vilasis-Cardona,Marcela Vitti,V. Volkov,A. Vollhardt,Balazs Voneki,A. Vorobyev,V. Vorobyev,Christian Voß,J. A. de Vries,C. Vázquez Sierra,Roland Waldi,C. Wallace,R. Wallace,J. J. Walsh,Jing Wang,D. R. Ward,Heather Mckenzie Wark,N. K. Watson,D. Websdale,Andreas Weiden,Mark Whitehead,Jean Wicht,Guy Wilkinson,Mark Wilkinson,Mark Richard James Williams,M. P. Williams,Thomas N. Williams,F. F. Wilson,J. Wimberley,J. Wishahi,W. Wislicki,M. Witek,G. Wormser,S. A. Wotton,Kenneth Wraight,K. Wyllie,Y. Xie,Z. Xing, Zhijie Xu,Zishuo Yang,Yuezhe Yao,Hang Yin,J. M. Yu,Xuhao Yuan,O. Yushchenko,Kristian Alexander Zarebski,Mikhail Zavertyaev, L. Zhang,Yanxi Zhang,A. Zhelezov,Y. H. Zheng,Xiaofeng Zhu,Valery Zhukov,Stefano Zucchelli
Physics Letters B(2017)
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摘要
The observation of the decay $\\varXi^{-}_{b}\\to J/\\psi\\varLambda K^{-}$ is reported, using a data sample corresponding to an integrated luminosity of $3~\\mathrm{fb}^{-1}$, collected by the LHCb detector in $pp$ collisions at centre-of-mass energies of $7$ and $8~\\mathrm{TeV}$. The production rate of $\\varXi_{b}^{-}$ baryons detected in the decay $\\varXi_{b}^{-}\\to J/\\psi\\varLambda K^{-}$ is measured relative to that of $\\varLambda_{b}^{0}$ baryons using the decay $\\varLambda_{b}^{0}\\to J/\\psi \\varLambda$. Integrated over the $b$-baryon transverse momentum $p_{\\rm T}<25~\\mathrm{GeV/}c $ and rapidity $2.0更多
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