@article{55a00e62697b4227a05ed647e73d7175,
title = "Observation of B (s)0 →j/ψp p Decays and Precision Measurements of the B (s)0 Masses",
abstract = "The first observation of the decays B(s)0→J/ψpp is reported, using proton-proton collision data corresponding to an integrated luminosity of 5.2 fb-1, collected with the LHCb detector. These decays are suppressed due to limited available phase space, as well as due to Okubo-Zweig-Iizuka or Cabibbo suppression. The measured branching fractions are B(B0→J/ψpp)=[4.51±0.40(stat)±0.44(syst)]×10-7, B(Bs0→J/ψpp)=[3.58±0.19(stat)±0.39(syst)]×10-6. For the Bs0 meson, the result is much higher than the expected value of O(10-9). The small available phase space in these decays also allows for the most precise single measurement of both the B0 mass as 5279.74±0.30(stat)±0.10(syst) MeV and the Bs0 mass as 5366.85±0.19(stat)±0.13(syst) MeV.",
author = "R. Aaij and \{Abell{\'a}n Beteta\}, C. and B. Adeva and M. Adinolfi and Aidala, \{C. A.\} and Z. Ajaltouni and S. Akar and P. Albicocco and J. Albrecht and F. Alessio and M. Alexander and \{Alfonso Albero\}, A. and G. Alkhazov and \{Alvarez Cartelle\}, P. and Alves, \{A. A.\} and S. Amato and S. Amerio and Y. Amhis and L. An and L. Anderlini and G. Andreassi and M. Andreotti and Andrews, \{J. E.\} and F. Archilli and \{Arnau Romeu\}, J. and A. Artamonov and M. Artuso and K. Arzymatov and E. Aslanides and M. Atzeni and B. Audurier and S. Bachmann and Back, \{J. J.\} and S. Baker and V. Balagura and W. Baldini and A. Baranov and Barlow, \{R. J.\} and Barrand, \{G. C.\} and S. Barsuk and W. Barter and M. Bartolini and F. Baryshnikov and V. Batozskaya and B. Batsukh and A. Battig and V. Battista and A. Bay and J. Beddow and F. Bedeschi and I. Bediaga and A. Beiter and Bel, \{L. J.\} and S. Belin and N. Beliy and V. Bellee and N. Belloli and K. Belous and I. Belyaev and G. Bencivenni and E. Ben-Haim and S. Benson and S. Beranek and A. Berezhnoy and R. Bernet and D. Berninghoff and E. Bertholet and A. Bertolin and C. Betancourt and F. Betti and Bettler, \{M. O.\} and Ia Bezshyiko and S. Bhasin and J. Bhom and Bieker, \{M. S.\} and S. Bifani and P. Billoir and A. Birnkraut and A. Bizzeti and M. Bj{\o}rn and Blago, \{M. P.\} and T. Blake and F. Blanc and S. Blusk and D. Bobulska and V. Bocci and \{Boente Garcia\}, O. and T. Boettcher and A. Bondar and N. Bondar and S. Borghi and M. Borisyak and M. Borsato and M. Boubdir and Bowcock, \{T. J.V.\} and C. Bozzi and S. Braun and M. Brodski and J. Brodzicka and \{Brossa Gonzalo\}, A. and D. Brundu and E. Buchanan and A. Buonaura and C. Burr and A. Bursche and J. Buytaert and W. Byczynski and S. Cadeddu and H. Cai and R. Calabrese and R. Calladine and M. Calvi and \{Calvo Gomez\}, M. and A. Camboni and P. Campana and \{Campora Perez\}, \{D. H.\} and L. Capriotti and A. Carbone and G. Carboni and R. Cardinale and A. Cardini and P. Carniti and \{Carvalho Akiba\}, K. and G. Casse and M. Cattaneo and G. Cavallero and R. Cenci and D. Chamont and Chapman, \{M. G.\} and M. Charles and Ph Charpentier and G. Chatzikonstantinidis and M. Chefdeville and V. Chekalina and C. Chen and S. Chen and Chitic, \{S. G.\} and V. Chobanova and M. Chrzaszcz and A. Chubykin and P. Ciambrone and \{Cid Vidal\}, X. and G. Ciezarek and F. Cindolo and Clarke, \{P. E.L.\} and M. Clemencic and Cliff, \{H. V.\} and J. Closier and V. Coco and Coelho, \{J. A.B.\} and J. Cogan and E. Cogneras and L. Cojocariu and P. Collins and T. Colombo and A. Comerma-Montells and A. Contu and G. Coombs and S. Coquereau and G. Corti and M. Corvo and \{Costa Sobral\}, \{C. M.\} and B. Couturier and Cowan, \{G. A.\} and Craik, \{D. C.\} and A. Crocombe and \{Cruz Torres\}, M. and R. Currie and \{Da Cunha Marinho\}, F. and \{Da Silva\}, \{C. L.\} and E. Dall'occo and J. Dalseno and C. D'Ambrosio and A. Danilina and P. D'Argent and A. Davis and \{De Aguiar Francisco\}, O. and \{De Bruyn\}, K. and \{De Capua\}, S. and \{De Cian\}, M. and \{De Miranda\}, \{J. M.\} and \{De Paula\}, L. and \{De Serio\}, M. and \{De Simone\}, P. and \{De Vries\}, \{J. A.\} and Dean, \{C. T.\} and W. Dean and D. Decamp and \{Del Buono\}, L. and B. Delaney and Dembinski, \{H. P.\} and M. Demmer and A. Dendek and D. Derkach and O. Deschamps and F. Desse and F. Dettori and B. Dey and \{Di Canto\}, A. and \{Di Nezza\}, P. and S. Didenko and H. Dijkstra and F. Dordei and M. Dorigo and \{Dos Reis\}, \{A. C.\} and \{Dosil Su{\'a}rez\}, A. and L. Douglas and A. Dovbnya and K. Dreimanis and L. Dufour and G. Dujany and P. Durante and Durham, \{J. M.\} and D. Dutta and R. Dzhelyadin and M. Dziewiecki and A. Dziurda and A. Dzyuba and S. Easo and U. Egede and V. Egorychev and S. Eidelman and S. Eisenhardt and U. Eitschberger and R. Ekelhof and L. Eklund and S. Ely and A. Ene and S. Escher and S. Esen and T. Evans and A. Falabella and C. F{\"a}rber and N. Farley and S. Farry and D. Fazzini and M. F{\'e}o and \{Fernandez Declara\}, P. and \{Fernandez Prieto\}, A. and F. Ferrari and \{Ferreira Lopes\}, L. and \{Ferreira Rodrigues\}, F. and M. Ferro-Luzzi and S. Filippov and Fini, \{R. A.\} and M. Fiorini and M. Firlej and C. Fitzpatrick and T. Fiutowski and F. Fleuret and M. Fontana and F. Fontanelli and R. Forty and \{Franco Lima\}, V. and M. Frank and C. Frei and J. Fu and W. Funk and E. Gabriel and \{Gallas Torreira\}, A. and D. Galli and S. Gallorini and S. Gambetta and Y. Gan and M. Gandelman and P. Gandini and Y. Gao and \{Garcia Martin\}, \{L. M.\} and \{Garc{\'i}a Pardi{\~n}as\}, J. and \{Garcia Plana\}, B. and \{Garra Tico\}, J. and L. Garrido and D. Gascon and C. Gaspar and L. Gavardi and G. Gazzoni and D. Gerick and E. Gersabeck and M. Gersabeck and T. Gershon and D. Gerstel and Ph Ghez and V. Gibson and Girard, \{O. G.\} and \{Gironella Gironell\}, P. and L. Giubega and K. 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Langenbruch and T. Latham and C. Lazzeroni and \{Le Gac\}, R. and R. Lef{\`e}vre and A. Leflat and F. Lemaitre and O. Leroy and T. Lesiak and B. Leverington and Li, \{P. R.\} and Y. Li and Z. Li and X. Liang and T. Likhomanenko and R. Lindner and F. Lionetto and V. Lisovskyi and G. Liu and X. Liu and D. Loh and A. Loi and I. Longstaff and Lopes, \{J. H.\} and Lovell, \{G. H.\} and D. Lucchesi and \{Lucio Martinez\}, M. and Y. Luo and A. Lupato and E. Luppi and O. Lupton and A. Lusiani and X. Lyu and F. MacHefert and F. MacIuc and V. MacKo and P. MacKowiak and S. Maddrell-Mander and O. Maev and K. Maguire and D. Maisuzenko and Majewski, \{M. W.\} and S. Malde and B. Malecki and A. Malinin and T. Maltsev and H. Malygina and G. Manca and G. Mancinelli and D. Marangotto and J. Maratas and Marchand, \{J. F.\} and U. Marconi and \{Marin Benito\}, C. and M. Marinangeli and P. Marino and J. Marks and Marshall, \{P. J.\} and G. Martellotti and M. Martinelli and \{Martinez Santos\}, D. and \{Martinez Vidal\}, F. and A. Massafferri and M. Materok and R. Matev and A. Mathad and Z. Mathe and C. Matteuzzi and A. Mauri and E. Maurice and B. Maurin and M. McCann and A. McNab and R. McNulty and Mead, \{J. V.\} and B. Meadows and C. Meaux and N. Meinert and D. Melnychuk and M. Merk and A. Merli and E. Michielin and Milanes, \{D. A.\} and E. Millard and Minard, \{M. N.\} and L. Minzoni and Mitzel, \{D. S.\} and A. M{\"o}dden and A. Mogini and Moise, \{R. D.\} and T. Momb{\"a}cher and Monroy, \{I. A.\} and S. Monteil and M. Morandin and G. Morello and Morello, \{M. J.\} and O. Morgunova and J. Moron and Morris, \{A. B.\} and R. Mountain and F. Muheim and M. Mukherjee and M. Mulder and D. M{\"u}ller and J. M{\"u}ller and K. M{\"u}ller and V. M{\"u}ller and Murphy, \{C. H.\} and D. Murray and P. Naik and T. Nakada and R. Nandakumar and A. Nandi and T. Nanut and I. Nasteva and M. Needham and N. Neri and S. Neubert and N. Neufeld and R. 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Polci and \{Poli Lener\}, M. and A. Poluektov and N. Polukhina and I. Polyakov and E. Polycarpo and Pomery, \{G. J.\} and S. Ponce and A. Popov and D. Popov and S. Poslavskii and E. Price and J. Prisciandaro and C. Prouve and V. Pugatch and \{Puig Navarro\}, A. and H. Pullen and G. Punzi and W. Qian and J. Qin and R. Quagliani and B. Quintana and Raab, \{N. V.\} and B. Rachwal and Rademacker, \{J. H.\} and M. Rama and \{Ramos Pernas\}, M. and Rangel, \{M. S.\} and F. Ratnikov and G. Raven and \{Ravonel Salzgeber\}, M. and M. Reboud and F. Redi and S. Reichert and F. Reiss and \{Remon Alepuz\}, C. and Z. Ren and V. Renaudin and S. Ricciardi and S. Richards and K. Rinnert and P. Robbe and A. Robert and Rodrigues, \{A. B.\} and E. Rodrigues and \{Rodriguez Lopez\}, \{J. A.\} and M. Roehrken and S. Roiser and A. Rollings and V. Romanovskiy and \{Romero Vidal\}, A. and Roth, \{J. D.\} and M. Rotondo and Rudolph, \{M. S.\} and T. Ruf and \{Ruiz Vidal\}, J. and \{Saborido Silva\}, \{J. J.\} and N. Sagidova and B. Saitta and \{Salustino Guimaraes\}, V. and \{Sanchez Gras\}, C. and \{Sanchez Mayordomo\}, C. and \{Sanmartin Sedes\}, B. and R. Santacesaria and \{Santamarina Rios\}, C. and M. Santimaria and E. Santovetti and G. Sarpis and A. Sarti and C. Satriano and A. Satta and M. Saur and D. Savrina and S. Schael and M. Schellenberg and M. Schiller and H. Schindler and M. Schmelling and T. Schmelzer and B. Schmidt and O. Schneider and A. Schopper and Schreiner, \{H. F.\} and M. Schubiger and S. Schulte and Schune, \{M. H.\} and R. Schwemmer and B. Sciascia and A. Sciubba and A. Semennikov and Sepulveda, \{E. S.\} and A. Sergi and N. Serra and J. Serrano and L. Sestini and A. Seuthe and P. Seyfert and M. Shapkin and Y. Shcheglov and T. Shears and L. Shekhtman and V. Shevchenko and E. Shmanin and Siddi, \{B. G.\} and \{Silva Coutinho\}, R. and \{Silva De Oliveira\}, L. and G. Simi and S. Simone and I. Skiba and N. Skidmore and T. Skwarnicki and Slater, \{M. W.\} and Smeaton, \{J. G.\} and E. Smith and Smith, \{I. T.\} and M. Smith and M. Soares and \{Soares Lavra\}, L. and Sokoloff, \{M. D.\} and Soler, \{F. J.P.\} and \{Souza De Paula\}, B. and B. Spaan and \{Spadaro Norella\}, E. and P. Spradlin and F. Stagni and M. Stahl and S. Stahl and P. Stefko and S. Stefkova and O. Steinkamp and S. Stemmle and O. Stenyakin and M. Stepanova and H. Stevens and A. Stocchi and S. Stone and B. Storaci and S. Stracka and Stramaglia, \{M. E.\} and M. Straticiuc and U. Straumann and S. Strokov and J. Sun and L. Sun and Y. Sun and K. Swientek and A. Szabelski and T. Szumlak and M. Szymanski and Z. Tang and T. Tekampe and G. Tellarini and F. Teubert and E. Thomas and Tilley, \{M. J.\} and V. Tisserand and S. T'Jampens and M. Tobin and S. Tolk and L. Tomassetti and D. Tonelli and Tou, \{D. Y.\} and \{Tourinho Jadallah Aoude\}, R. and E. Tournefier and M. Traill and Tran, \{M. T.\} and A. Trisovic and A. Tsaregorodtsev and G. Tuci and A. Tully and N. Tuning and A. Ukleja and A. Usachov and A. Ustyuzhanin and U. Uwer and A. Vagner and V. Vagnoni and A. Valassi and S. Valat and G. Valenti and \{Van Beuzekom\}, M. and \{Van Herwijnen\}, E. and \{Van Tilburg\}, J. and \{Van Veghel\}, M. and \{Vazquez Gomez\}, R. and \{Vazquez Regueiro\}, P. and \{V{\'a}zquez Sierra\}, C. and S. Vecchi and Velthuis, \{J. J.\} and M. Veltri and G. Veneziano and A. Venkateswaran and M. Vernet and M. Veronesi and M. Vesterinen and \{Viana Barbosa\}, \{J. V.\} and D. Vieira and \{Vieites Diaz\}, M. and H. Viemann and X. Vilasis-Cardona and A. Vitkovskiy and M. Vitti and V. Volkov and A. Vollhardt and \{Vom Bruch\}, D. and B. Voneki and A. Vorobyev and V. Vorobyev and N. Voropaev and R. Waldi and J. Walsh and J. Wang and M. Wang and Y. Wang and Z. Wang and Ward, \{D. R.\} and Wark, \{H. M.\} and Watson, \{N. K.\} and D. Websdale and A. Weiden and C. Weisser and M. Whitehead and G. Wilkinson and M. Wilkinson and I. Williams and M. Williams and Williams, \{M. 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year = "2019",
month = may,
day = "17",
doi = "10.1103/PhysRevLett.122.191804",
language = "English",
volume = "122",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "19",
}