First Observation of a Baryonic B_ s ^ 0 Decay.

Author	: R Aaij B Adeva M Adinolfi Z Ajaltouni S Akar J Albrecht F Alessio M Alexander S Ali G Alkhazov Alvarez Cartelle AA Alves S Amato S Amerio Y Amhis L An L Anderlini G Andreassi M Andreotti JE Andrews RB Appleby F Archilli P d'Argent Arnau Romeu A Artamonov M Artuso E Aslanides G Auriemma M Baalouch I Babuschkin S Bachmann JJ Back A Badalov C Baesso S Baker Balagura V W Baldini A Baranov RJ Barlow C Barschel S Barsuk W Barter F Baryshnikov M Baszczyk Batozskaya V Battista V A Bay L Beaucourt J Beddow F Bedeschi I Bediaga A Beiter LJ Bel Bellee V N Belloli K Belous I Belyaev E Ben-Haim G Bencivenni S Benson S Beranek A Berezhnoy R Bernet A Bertolin C Betancourt F Betti MO Bettler M van Beuzekom I Bezshyiko S Bifani P Billoir A Birnkraut A Bitadze A Bizzeti T Blake F Blanc J Blouw S Blusk Bocci V T Boettcher A Bondar N Bondar W Bonivento I Bordyuzhin A Borgheresi S Borghi M Borisyak M Borsato F Bossú M Boubdir TJV Bowcock E Bowen C Bozzi S Braun T Britton J Brodzicka E Buchanan C Burr A Bursche J Buytaert S Cadeddu R Calabrese M Calvi Calvo Gomez A Camboni P Campana DH Perez L Capriotti A Carbone G Carboni R Cardinale A Cardini P Carniti L Carson Carvalho Akiba G Casse L Cassina Castillo Garcia M Cattaneo G Cavallero R Cenci D Chamont M Charles P Charpentier G Chatzikonstantinidis M Chefdeville S Chen SF Cheung Chobanova V M Chrzaszcz A Chubykin Cid Vidal G Ciezarek PEL Clarke M Clemencic HV Cliff J Closier Coco V J Cogan E Cogneras Cogoni V L Cojocariu P Collins A Comerma-Montells A Contu A Cook G Coombs S Coquereau G Corti M Corvo CM Sobral B Couturier GA Cowan DC Craik A Crocombe Cruz Torres S Cunliffe R Currie C D'Ambrosio Da Marinho E Dall'Occo J Dalseno A Davis De Francisco K De Bruyn S De Capua M De Cian JM De Miranda L De Paula M De Serio P De Simone CT Dean D Decamp M Deckenhoff L Del Buono HP Dembinski M Demmer A Dendek D Derkach O Deschamps F Dettori B Dey A Di Canto P Di Nezza H Dijkstra F Dordei M Dorigo Dosil Suárez A Dovbnya K Dreimanis L Dufour G Dujany K Dungs P Durante R Dzhelyadin M Dziewiecki A Dziurda A Dzyuba N Déléage S Easo M Ebert U Egede Egorychev V S Eidelman S Eisenhardt U Eitschberger R Ekelhof L Eklund S Ely S Esen HM Evans T Evans A Falabella N Farley S Farry R Fay D Fazzini D Ferguson G Fernandez Fernandez Prieto F Ferrari Ferreira Rodrigues M Ferro-Luzzi S Filippov RA Fini M Fiore M Fiorini M Firlej C Fitzpatrick T Fiutowski F Fleuret K Fohl M Fontana F Fontanelli DC Forshaw R Forty Franco Lima V M Frank C Frei J Fu W Funk E Furfaro C Färber E Gabriel Gallas Torreira D Galli S Gallorini S Gambetta M Gandelman P Gandini Y Gao LM Martin García Pardiñas Garra Tico L Garrido PJ Garsed D Gascon C Gaspar L Gavardi G Gazzoni D Gerick E Gersabeck M Gersabeck T Gershon P Ghez S Gianì Gibson V OG Girard L Giubega K Gizdov VV Gligorov D Golubkov A Golutvin A Gomes Gorelov IV C Gotti E Govorkova Graciani Diaz LA Cardoso E Grauges E Graverini G Graziani A Grecu R Greim P Griffith L Grillo L Gruber BR Cazon O Grünberg E Gushchin Y Guz T Gys C Göbel T Hadavizadeh C Hadjivasiliou G Haefeli C Haen SC Haines B Hamilton X Han S Hansmann-Menzemer N Harnew ST Harnew J Harrison M Hatch J He T Head A Heister K Hennessy P Henrard L Henry E van Herwijnen M Heß A Hicheur D Hill C Hombach PH Hopchev ZC Huard W Hulsbergen T Humair M Hushchyn D Hutchcroft M Idzik P Ilten R Jacobsson J Jalocha E Jans A Jawahery F Jiang M John D Johnson CR Jones C Joram B Jost N Jurik S Kandybei M Karacson JM Kariuki S Karodia M Kecke M Kelsey M Kenzie T Ketel E Khairullin B Khanji C Khurewathanakul T Kirn S Klaver K Klimaszewski T Klimkovich S Koliiev M Kolpin I Komarov R Kopecna P Koppenburg A Kosmyntseva S Kotriakhova M Kozeiha L Kravchuk M Kreps P Krokovny F Kruse W Krzemien W Kucewicz M Kucharczyk Kudryavtsev V AK Kuonen K Kurek T Kvaratskheliya D Lacarrere G Lafferty A Lai G Lanfranchi C Langenbruch T Latham C Lazzeroni R Le Gac J van Leerdam A Leflat J Lefrançois R Lefèvre F Lemaitre Lemos Cid O Leroy T Lesiak B Leverington T Li Y Li Z Li T Likhomanenko R Lindner F Lionetto X Liu D Loh I Longstaff JH Lopes D Lucchesi Lucio Martinez H Luo A Lupato E Luppi O Lupton A Lusiani X Lyu F Machefert F Maciuc B Maddock O Maev K Maguire S Malde A Malinin T Maltsev G Manca G Mancinelli P Manning J Maratas JF Marchand U Marconi Marin Benito M Marinangeli P Marino J Marks G Martellotti M Martin M Martinelli Martinez Santos Martinez Vidal Martins Tostes LM Massacrier A Massafferri R Matev A Mathad Z Mathe C Matteuzzi A Mauri E Maurice B Maurin A Mazurov M McCann A McNab R McNulty B Meadows F Meier D Melnychuk M Merk A Merli E Michielin DA Milanes MN Minard DS Mitzel A Mogini Molina Rodriguez IA Monroy S Monteil M Morandin MJ Morello O Morgunova J Moron AB Morris R Mountain F Muheim M Mulder M Mussini D Müller J Müller K Müller Müller V P Naik T Nakada R Nandakumar A Nandi I Nasteva M Needham N Neri S Neubert N Neufeld M Neuner TD Nguyen C Nguyen-Mau S Nieswand R Niet N Nikitin T Nikodem A Nogay DP O'Hanlon A Oblakowska-Mucha Obraztsov V S Ogilvy R Oldeman CJG Onderwater A Ossowska JM Goicochea P Owen A Oyanguren PR Pais A Palano M Palutan A Papanestis M Pappagallo LL Pappalardo C Pappenheimer W Parker C Parkes G Passaleva A Pastore M Patel C Patrignani A Pearce A Pellegrino G Penso Pepe Altarelli S Perazzini P Perret L Pescatore K Petridis A Petrolini A Petrov M Petruzzo Picatoste Olloqui B Pietrzyk M Pikies D Pinci A Pistone A Piucci Placinta V S Playfer Plo Casasus T Poikela F Polci Poli Lener A Poluektov I Polyakov E Polycarpo GJ Pomery S Ponce A Popov D Popov B Popovici S Poslavskii C Potterat E Price J Prisciandaro C Prouve Pugatch V Puig Navarro G Punzi C Qian W Qian R Quagliani B Rachwal JH Rademacker M Rama Ramos Pernas MS Rangel I Raniuk F Ratnikov G Raven Ravonel Salzgeber M Reboud F Redi S Reichert AC Reis Remon Alepuz Renaudin V S Ricciardi S Richards M Rihl K Rinnert Rives Molina V P Robbe AB Rodrigues E Rodrigues JA Lopez Rodriguez Perez A Rogozhnikov S Roiser A Rollings Romanovskiy V Romero Vidal JW Ronayne M Rotondo MS Rudolph T Ruf Ruiz Valls JJ Silva E Sadykhov N Sagidova B Saitta Salustino Guimaraes V Sanchez Gonzalo Sanchez Mayordomo Sanmartin Sedes R Santacesaria Santamarina Rios M Santimaria E Santovetti A Sarti C Satriano A Satta DM Saunders D Savrina S Schael M Schellenberg M Schiller H Schindler M Schlupp M Schmelling T Schmelzer B Schmidt O Schneider A Schopper HF Schreiner K Schubert M Schubiger MH Schune R Schwemmer B Sciascia A Sciubba A Semennikov A Sergi N Serra J Serrano L Sestini P Seyfert M Shapkin I Shapoval Y Shcheglov T Shears L Shekhtman Shevchenko V BG Siddi Silva Coutinho Silva de Oliveira G Simi S Simone M Sirendi N Skidmore T Skwarnicki E Smith IT Smith J Smith M Smith Soares Lavra MD Sokoloff FJP Soler Souza De Paula B Spaan P Spradlin S Sridharan F Stagni M Stahl S Stahl P Stefko S Stefkova O Steinkamp S Stemmle O Stenyakin H Stevens S Stoica S Stone B Storaci S Stracka ME Stramaglia M Straticiuc U Straumann L Sun W Sutcliffe K Swientek Syropoulos V M Szczekowski T Szumlak S T'jampens A Tayduganov T Tekampe G Tellarini F Teubert E Thomas J van Tilburg MJ Tilley Tisserand V M Tobin S Tolk L Tomassetti D Tonelli S Topp-Joergensen F Toriello Tourinho Aoude E Tournefier S Tourneur K Trabelsi M Traill MT Tran M Tresch A Trisovic A Tsaregorodtsev P Tsopelas A Tully N Tuning A Ukleja A Ustyuzhanin U Uwer C Vacca A Vagner Vagnoni V A Valassi S Valat G Valenti Vazquez Gomez Vazquez Regueiro S Vecchi M van Veghel JJ Velthuis M Veltri G Veneziano A Venkateswaran TA Verlage M Vernet M Vesterinen JV Barbosa B Viaud D Vieira Vieites Diaz H Viemann X Vilasis-Cardona M Vitti Volkov V A Vollhardt B Voneki A Vorobyev Vorobyev V C Voß JA de Vries Vázquez Sierra R Waldi C Wallace R Wallace J Walsh J Wang DR Ward HM Wark NK Watson D Websdale A Weiden M Whitehead J Wicht G Wilkinson M Wilkinson M Williams MP Williams M Williams T Williams FF Wilson J Wimberley MA Winn J Wishahi W Wislicki M Witek G Wormser SA Wotton K Wraight K Wyllie Y Xie Z Xu Z Yang Z Yang Y Yao H Yin J Yu X Yuan O Yushchenko KA Zarebski M Zavertyaev L Zhang Y Zhang A Zhelezov Y Zheng X Zhu Zhukov V JB Zonneveld S Zucchelli Collaboration. LHCb
Abstract	: We report the first observation of a baryonic B_{s}^{0} decay, B_{s}^{0}→pΛ[over ¯]K^{-}, using proton-proton collision data recorded by the LHCb experiment at center-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3.0 fb^{-1}. The branching fraction is measured to be B(B_{s}^{0}→pΛ[over ¯]K^{-})+B(B_{s}^{0}→p[over ¯]ΛK^{+})=[5.46±0.61±0.57±0.50(B)±0.32(f_{s}/f_{d})]×10^{-6}, where the first uncertainty is statistical and the second systematic, the third uncertainty accounts for the experimental uncertainty on the branching fraction of the B^{0}→pΛ[over ¯]π^{-} decay used for normalization, and the fourth uncertainty relates to the knowledge of the ratio of b-quark hadronization probabilities f_{s}/f_{d}.
Year of Publication	: 2017
Journal	: Physical review letters
Volume	: 119
Issue	: 4
Number of Pages	: 041802
Date Published	: 2017
ISSN Number	: 0031-9007
URL	: http://link.aps.org/abstract/PRL/v119/p041802
DOI	: 10.1103/PhysRevLett.119.041802
Short Title	: Phys Rev Lett
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