Branching Fraction Measurements of the Rare B_{s}^{0}→ϕμ^{+}μ^{-} and B_{s}^{0}→f_{2}^{'}(1525)μ^{+}μ^{-} Decays.

R Aaij,E Millard,R Calabrese,L Meyer Garcia,Ph Ghez,M Piccini,S Vecchi,F C R Bishop,J B Zonneveld,C Patrignani,U Marconi,O Lupton,B Sciascia,A Palano,F Muheim,R Oldeman,M Zeng,S Simone,E Van Herwijnen,B D C Westhenry,R Lefèvre,D Torres Machado,A Beiter,K Gizdov,S Eidelman,J F Marchand,M Mulder,D Y Tou,C L Da Silva,V Chulikov,T Pajero,M Féo,C Trippl,S Luchuk,C Langenbruch,A B Rodrigues,M Smith,T Nanut,D J Unverzagt,C Vázquez Sierra,A Kondybayeva,C Satriano,L Shchutska,J Eschle,G Haefeli,L Bian,S Eisenhardt,D Pereima,M P Blago,E Aslanides,M Santimaria,A G Morris,B Mitreska,H Yin,I Longstaff,F Redi,D Xiao,Y Gan,L Mcconnell,M Atzeni,M H Schune,G Robertson,A Konoplyannikov,M Williams,L R Madhan Mohan,C Chen,E Ben-Haim,W Kucewicz,T Colombo,S Jakobsen,D Sanchez Gonzalo,W Byczynski,D Wiedner,F Dettori,G Tuci,W Funk,M Patel,L Dufour,M Frank,M Reboud,O Deschamps,M D Sokoloff,M Shapkin,G Valenti,S De Capua,A Mcnab,M Bjørn,O De Aguiar Francisco,G Liu,N Valls Canudas,S Cali,M Franco Sevilla,A Lupato,D Strekalina,F Goncalves Abrantes,T Kvaratskheliya,V Pugatch,I Williams,A Danilina,M Hushchyn,K Klimaszewski,P Griffith,S Borghi,F Stagni,G Cavallero,A Rollings,J Fu,D Lucchesi,F F Wilson,R Santacesaria,M Needham,M Martinelli,R Mcnulty,K Wyllie,C M Costa Sobral,F Maciuc,S Amato,M Veronesi,M Palutan,H Afsharnia,Y Yao,U Uwer,F Reiss,C B Van Hulse,P D’Argent,P Koppenburg,M Whitehead,U Egede,L Congedo,G Corti,C Fitzpatrick,C Giugliano,L Martinazzoli,J Buytaert,N Neufeld,M Cruz Torres,D J White,A Ryzhikov,A Semennikov,Y Zhang,M Goncerz,L G Scantlebury Smead,M Wang,A B Morris,M Pappagallo,S Esen,B Spaan,F Teubert,E Franzoso,W Hu,S Petrucci,L L Pappalardo,S Bhasin,A Hicheur,V Vagnoni,A C Dos Reis,P Naik,A Vorobyev,H C Bernstein,D Maisuzenko,F Suljik,S Taneja,R Vazquez Gomez,P Mackowiak,G Bencivenni,J M De Miranda,A Mödden,T Latham,F Fleuret,D Murray,M Chefdeville,S Liu,J Lomba Castro,G Graziani,A Philippov,A Jawahery,M Vieites Diaz,D P O’Hanlon,L Capriotti,C Frei,N Cooke,B G Siddi,A M Hennequin,M Ramos Pernas,G J Kunde,R Nandakumar,X Han,E Shmanin,S Didenko,N Skidmore,N K Watson,D Websdale,M S Bieker,A Ossowska,M Witek,E Cogneras,T Evans,Ia Bezshyiko,W Parker,E M Niel,V Chobanova,C Weisser,S Akar,T Harrison,P Muzzetto,A Papanestis,P Stefko,T Szumlak,B Adeva,L Li,D Melnychuk,A Ukleja,Z Yang,M F Cicala,S Schael,S Kholodenko,J Qin,W Krupa,C R Jones,O Steinkamp,K R Mattioli,P Collins,B Jost,M J Morello,S Celani,V Dobishuk,J J Lane,D Golubkov,J Maratas,G Casse,D S Mitzel,M G Chapman,C Wang,S Kandybei,D Bobulska,S Ferreres Sole,V Vorobyev,P Carniti,F J P Soler,P Vincent,A Merli,I Nasteva,X Huang,S Schulte,D Galli,N Voropaev,J M Durham,K De Bruyn,M Schmelling,L Tomassetti,M Giovannetti,M Adinolfi,T Nakada,T Shears,O Schneider,T Boettcher,T Skwarnicki,K Carvalho Akiba,E Spadaro Norella,F Polci,W Baldini,G Martellotti,M Schubiger,J M Fernandez-Tenllado Arribas,A Valassi,B Khanji,V Jevtic,M Borsato,G Passaleva,V Duk,D Hynds,V S Kirsebom,R Lindner,L Calero Diaz,G Wilkinson,F Desse,D Marangotto,C Betancourt,L Sestini,C Parkes,S Maccolini,B K Jashal,V Obraztsov,L An,M T Tran,V Lukashenko,R Matev,A Smetkina,T Fiutowski,M.-N Minard,G Raven,A Brossa Gonzalo,A Venkateswaran,C H Murphy,V Matiunin,M Fontana,Y Xie,H Mu,B Pagare,S Zucchelli,D Pinci,S Cholak,M Mikhasenko,M Rotondo,J Closier,F Blanc,A Petrolini,F Bedeschi,J P Grabowski,Y Kang,E Luppi,M Romero Lamas,S Ek-In,N Tuning,G Manca,A Zhelezov,M Calvi,R Waldi,L Promberger,X Yuan,M Karacson,L Cojocariu,S Aiola,C Hasse,M Poli Lener,S Gromov,M Garau,M Kreps,B Audurier,D Gerick,A Butkevich,B Pietrzyk,J García Pardiñas,V Renaudin,S Cadeddu,G Simi,Q Xu,F Ferrari,S Filippov,C Nunez,D Hill,R Cardinale,B Souza De Paula,L Grillo,T Ruf,Y Pan,R Kopecna,R Forty,O Yushchenko,A Kharisova,T J V Bowcock,G Bassi,J A Rodriguez Lopez,R Currie,S Chen,M Wilkinson,M Poliakova,A Schopper,A Golutvin,B Quintana,M Idzik,Y Sun,B Leverington,M Gandelman,P Kravchenko,P A Günther,V Lisovskyi,C Abellán Beteta,A Bay,V Franco Lima,J Brodzicka,G Morello,D Popov,K Petridis,O Stenyakin,B Passalacqua,C Matteuzzi,A Bitadze,A Buonaura,M Rama,A Battig,D Zhang,A Usachov,M Bachmayer,Z Li,R Jacobsson,A Contu,T Grammatico,C Nguyen-Mau,V Romanovskiy,J Heuel,B Dey,S Ely,R Mountain,F Betti,S Bifani,A Maevskiy,A Bursche,J A B Coelho,M Van Dijk,L Minzoni,S Koliiev,K Dreimanis,Y Luo,M Straticiuc,M Brodski,J Walsh,P Ilten,G Lanfranchi,D C Craik,R Ribatti,N Polukhina,V Shevchenko,T Mombächer,B Couturier,L Sun,G Alkhazov,E Polycarpo,A Alfonso Albero,S T’Jampens,V Balagura,R Wang,J A De Vries,N Jurik,R Le Gac,D Manuzzi,A Inglessi,P Gironella Gironell,A Bertolin,R J Hunter,A Andreianov,M Cattaneo,B Meadows,I Kostiuk,S Neubert,C Bertella,A Boyer,E L Gkougkousis,C Gu,P Campana,V Placinta,R J Barlow,A Casais Vidal,D A Friday,F L Souza De Almeida,D Ilin,A Leflat,N Sagidova,V Egorychev,A Mathad,E Graverini,M De Serio,M Borisyak,J H Lopes,C Sanchez Gras,H Malygina,Y Zheng,P Krokovny,P Ciambrone,L De Paula,L Witola,H M Wark,N Harnew,K Rinnert,N V Raab,A Tully,A Szabelski,L Kravchuk,G Ciezarek,S Klaver,K A Thomson,L Giubega,H Stevens,A Vagner,A Cardini,V Gibson,L Dieste Maronas,D Vieira,T Blake,M Calvo Gomez,B Saitta,D De Simone,X Cid Vidal,G Coombs,L A Granado Cardoso,A Mauri,R Schwemmer,Q Han,C Burr,F Alessio,Z Wang,A Villa,M S Rangel,M Ferrillo,P Durante,G Chatzikonstantinidis,M W Dudek,F Dordei,M Guarise,X Liang,R Quagliani,P Robbe,D Hutchcroft,R E Geertsema,E Dall’Occo,S Braun,I Belyaev,D Lancierini,F Archilli,S Sellam,A Dziurda,B Delaney,S Popov,E Gersabeck,C J Parkinson,M Veltri,Z Aliouche,L Douglas,J Cogan,M Hatch,K M Fischer,A Pellegrino,M Pepe Altarelli,W Barter,D Gerstel,N S Nolte,T Lesiak,D Berninghoff,M Fiorini,J Albrecht,S Gambetta,A Seuthe,J J Back,L Ferreira Lopes,E Thomas,H Liu,J J Velthuis,C J G Onderwater,A Loi,I A Monroy,G Frau,M Zavertyaev,D M Shangase,M Hecker,A Oyanguren,W Hulsbergen,A Berezhnoy,S Stahl,S Meloni,L Del Buono,O Kot,I Solovyev,S Bachmann,B Fang,X Zhu,K Arzymatov,Y Zhou,K Müller,J Sun,C Bozzi,S Ponce,H Dijkstra,G Sarpis,J Plews,A Lai,A Sergi,P Billoir,P Alvarez Cartelle,W Qian,A Minotti,K Heijhoff,P E L Clarke,J Mauricio,M Mazurek,J Fan,L Henry,S Capelli,O Lantwin,N Sahoo,G Pietrzyk,H.-P Dembinski,C D’Ambrosio,Y Gao,M Schiller,F Lazzari,Z Ren,S Zhang,P Seyfert,F Ratnikov,S G Weber,N Bondar,H V Cliff,T Gaintseva,A Carbone,P M Hamilton,S E Mitchell,D Fazzini,M Clemencic,N Meinert,P J Marshall,Z Ajaltouni,P Li,P Ibis,C A Chavez Barajas,M W Majewski,M Firlej,L Eklund,S Kretzschmar,N Neri,A Dovbnya,E Rodrigues,T Ketel,A Pearce,A Pastore,L Soares Lavra,K Prasanth,F Baryshnikov,M Tobin,T Ovsiannikova,J M Otalora Goicochea,C Remon Alepuz,B R Gruberg Cazon,F A Garcia Rosales,N Serra,Q Zou,E Gabriel,L Zhang,B Garcia Plana,J Marks,J Crkovská,F Fontanelli,C Haen,Q Fuehring,S Perazzini,Z Zhu,V Belavin,D Savrina,A Satta,S Belin,A Dendek,A Gioventù,M E Stramaglia,S Stone,J Cerasoli,M Kucharczyk,N Nikitin,R Newcombe,M Vesterinen,K Heinicke,E Vilella Figueras,K Hennessy,F Machefert,A Snoch,E Epple,T Gys,A Romero Vidal,S Li,J G Smeaton,P De Simone,G Mancinelli,I Polyakov,G H Lovell,M Merk,O Zenaiev,I Carli,Y Amhis,C Gaspar,J L Cobbledick,S Escher,K Belous,S Nieswand,J J Saborido Silva,M Morandin,E Smith,J Bhom,S E Hollitt,D Brundu,V Denysenko,D Dutta,M De Cian,M Hilton,T D Nguyen,G Meier,A Gallas Torreira,Y Wang,M Charles,H Li,A Davis,P Garcia Moreno,E Graugés,B Schmidt,A Bizzeti,R Bernet,A Chubykin,M Pili,S Monteil,T Halewood-Leagas,J He,V Kudryavtsev,S Barsuk,M S Rudolph,E Santovetti,A Ene,S Farry,J D Shupperd,J A Boelhauve,T Hadavizadeh,O Maev,M Stahl,M Van Beuzekom,S A Wotton,L Shekhtman,C T Dean,M John,M Alexander,F Keizer,A Massafferri,T Ackernley,S Mariani,R Silva Coutinho,P Kopciewicz,A Grecu,D Johnson,S Ricciardi,H Viemann,L Anderlini,J H Rademacker,E Jans,J T Borsuk,M Sarpis,S Poslavskii,A Falabella,C Gotti,J S Butter,V Coco,Y Lu,M Gersabeck,L E Yeomans,P Spradlin,R A Fini,Y Yang,J Wang,P Gandini,T Kirn,I Bediaga,C Göbel,V Tisserand,M Saur,A Chernov,M Kenzie,R D Moise,S H Lee,J Dalseno,L M Garcia Martin,H Cai,F Ferreira Rodrigues,I Corredoira Fernandez,G Punzi,P Owen,H Pullen,A Dzyuba,E Zaffaroni,S Maddrell-Mander,G Carboni,M Andreotti,T Gershon,G Wormser,S Malde,S Blusk,F Kress,D Müller,S Easo,M Bartolini,S Hansmann-Menzemer,A Bondar,M Mccann,T H Hancock,O Leroy,A Sarti,H Schindler,A Gomes,J C Smallwood,B Batsukh,A Ustyuzhanin,M Materok,J D Roth,S Kotriakhova,G J Pomery,A Petrov,M Petruzzo,Ph Charpentier,E Maurice,G Panshin,Y Fan,E Gushchin,R Lane,A Poluektov,R Calladine,F Pisani,M Marinangeli,M Artuso,A Lusiani,C Pappenheimer,M Van Veghel,T Maltsev,J Ruiz Vidal,Y Li,P Perret,P Di Nezza,X Vilasis‐Cardona ,M S Soares ,D Décamp ,M Xu ,Guanghua Gong ,M Birch ,Ilaria Neri ,D J D Thompson ,A Brea Rodríguez ,W Krzemień ,J Moroń ,A Zharkova ,Sergio Gómez Fernández ,C Marín Benito ,Rafał Dominik Krawczyk ,Ryunosuke Hugo O'neil ,Mario Edgardo Olivares ,Zhiyu Xiang ,Tamaki Holly Mcgrath ,Thomas Peter Jones ,Matteo Salomoni ,R Ma ,P Baladrón Rodríguez ,Alex Daniel Fernez ,H Sazak ,J Ryżka ,Yu Guz ,X R Lyu ,M Petrič ,А Артамонов ,Zhe Xu ,Wenqian Huang ,A Obłąkowska-Mucha ,Z Máthé ,Patrícia Camargo Magalhães ,M Lucio Martínez ,В Жуков ,Е Говоркова ,Igor Slazyk ,W Wiślicki ,Dorothea Vom Bruch ,Hilbrand Steffen Kuindersma ,M Slater ,James Vincent Mead ,C Prouvé ,I Gorelov ,P Pais ,I Shchemerov ,A G Downes ,K Świentek ,F Martínez Vidal ,O Kitouni ,P N Swallow ,P A Gorbounov ,C J Pawley ,L Carus ,Resmi P K ,A M Donohoe ,А Малинин ,Di Yang ,L Calefice ,O Boente García ,S A Bouchiba ,V Maćko ,Alessandro Di Cicco ,Maik Becker ,Alexander Mclean Marshall ,M Chrząszcz ,Angel Fernando Campoverde Quezada ,Marko Milovanovic ,A Fernández Prieto ,D A Milanés ,Feng Jiang ,Ll Garrido ,T H Lin ,S Legotin ,M Pló Casasús ,C Santamarina Ríos ,J S Yu ,Philipp Roloff ,Efren Rodriguez Rodriguez ,Elisabet Golobardes ,M P Williams ,A Scarabotto ,L Pica ,Peter Švihra ,К Ившин ,A J Chadwick ,Mara Senghi Soares ,M Ferro‐Luzzi ,K Vos ,Aristeidis Fkiaras ,Xu Li ,Д Деркач ,Ning Qin ,D Zuliani ,M Szymański ,Jifeng Hu ,B Rachwał ,J J Malczewski ,И Белов ,Xue-Qing Hu ,Xiaokang Zhou ,D Martínez Santos ,A Terentev ,Artur Ishteev ,M Jeżabek ,V Bellée ,R A Mohammed ,M Zdybał ,G D Lafferty ,Thi Thuy Hang Pham ,A S Boldyrev ,D S Fitzgerald ,J Baptista De Souza Leite ,Ekaterina Trifonova ,Lishuang Ma ,Hangyi Wu ,Eduard Ursov ,H R Qi ,R I Rabadán Trejo ,Zhihong Shen ,Alastair Roger Tanner ,L M Greeven ,P Vázquez Regueiro ,M Karpov ,Aleksandr Solovev ,D Saranin ,Camille Normand ,C A Aidala ,Jan Patrick Hammerich ,Vladimir Gligorov ,J M Basels ,L L Gerken ,Henryk Karol Giemza ,S L Yang ,М Королев ,R Litvinov ,Jingyi Xu ,Olga Madejczyk ,Andrea Lampis ,Y Shang ,A Güth ,S Dadabaev ,Jan Langer ,D Lacarrère ,E B Shields ,J Haimberger ,M J Bradley ,Ao Xu ,B Małecki ,G Zunica

doi:10.1103/physrevlett.127.151801

Abstract

The branching fraction of the rare B_{s}^{0}→ϕμ^{+}μ^{-} decay is measured using data collected by the LHCb experiment at center-of-mass energies of 7, 8, and 13TeV, corresponding to integrated luminosities of 1, 2, and 6 fb^{-1}, respectively. The branching fraction is reported in intervals of q^{2}, the square of the dimuon invariant mass. In the q^{2} region between 1.1 and 6.0 GeV^{2}/c^{4}, the measurement is found to lie 3.6 standard deviations below a standard model prediction based on a combination of light cone sum rule and lattice QCD calculations. In addition, the first observation of the rare B_{s}^{0}→f_{2}^{'}(1525)μ^{+}μ^{-} decay is reported with a statistical significance of 9 standard deviations and its branching fraction is determined.

Highlights

Background fromB0 → Kþπ−μþμ− and Λ0b → pK−μþμ− decays is found to be non-negligible in the wide mðKþK−Þ window
For the rare B0s → φμþμ− decay, a simultaneous extended maximum-likelihood fit of the data samples for the different periods is performed in intervals of q2, where the signal yields are parametrized using Eq (1) and the differential branching fraction is shared between the samples
The relative branching fraction measurement is affected by systematic uncertainties on the fit model and the efficiency ratio, where the latter is determined using standard model (SM)

Summary

Introduction

Background fromB0 → Kþπ−μþμ− and Λ0b → pK−μþμ− decays is found to be non-negligible in the wide mðKþK−Þ window. The yields of the normalization mode for the different data-taking periods are determined using extended unbinned maximum-likelihood fits to the mðKþK−μþμ−Þ distribution. The yields of the normalization mode NJ=ψφ are determined to be 62980 Æ 270, 70970 Æ 290, and 148490 Æ 410 for the three different data-taking periods, where the uncertainties are statistical only.

Results

Conclusion