Skip to main content
eScholarship
Open Access Publications from the University of California

Measurement of the B_{s}^{0}→μ^{+}μ^{-} Branching Fraction and Effective Lifetime and Search for B^{0}→μ^{+}μ^{-} Decays.

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

Published Web Location

http://doi.org/10.1103/PhysRevLett.118.191801
No data is associated with this publication.
Abstract

A search for the rare decays B_{s}^{0}→μ^{+}μ^{-} and B^{0}→μ^{+}μ^{-} is performed at the LHCb experiment using data collected in pp collisions corresponding to a total integrated luminosity of 4.4  fb^{-1}. An excess of B_{s}^{0}→μ^{+}μ^{-} decays is observed with a significance of 7.8 standard deviations, representing the first observation of this decay in a single experiment. The branching fraction is measured to be B(B_{s}^{0}→μ^{+}μ^{-})=(3.0±0.6_{-0.2}^{+0.3})×10^{-9}, where the first uncertainty is statistical and the second systematic. The first measurement of the B_{s}^{0}→μ^{+}μ^{-} effective lifetime, τ(B_{s}^{0}→μ^{+}μ^{-})=2.04±0.44±0.05  ps, is reported. No significant excess of B^{0}→μ^{+}μ^{-} decays is found, and a 95% confidence level upper limit, B(B^{0}→μ^{+}μ^{-})<3.4×10^{-10}, is determined. All results are in agreement with the standard model expectations.

Item not freely available? Link broken?
Report a problem accessing this item