LHCb CollaborationAaij, R.Adeva, B.Adinolfi, M.Adrover, C.Affolder, A.Ajaltouni, Z.Albrecht, J.Alessio, F.Alexander, M.Ali, S.Alkhazov, G.Cartelle, P. AlvarezAmato, S.Amerio, S.Amhis, Y.Anderlini, L.Anderson, J.Andreassen, R.Andrews, J. E.Appleby, R. B.Gutierrez, O. AquinesArchilli, F.Artamonov, A.Artuso, M.Aslanides, E.Auriemma, G.Baalouch, M.Bachmann, S.Back, J. J.Baesso, C.Balagura, V.Baldini, W.Barlow, R. J.Barschel, C.Barsuk, S.Barter, W.Bauer, ThBay, A.Beddow, J.Bedeschi, F.Bediaga, I.Belogurov, S.Belous, K.Belyaev, I.Ben-Haim, E.Bencivenni, G.Benson, S.Benton, J.Berezhnoy, A.Bernet, R.Bettler, M-O.Van Beuzekom, M.Bien, A.Bifani, S.Bird, T.Bizzeti, A.Bjornstad, P. M.Blake, T.Blanc, F.Blouw, J.Blusk, S.Bocci, V.Bondar, A.Bondar, N.Bonivento, W.Borghi, S.Borgia, A.Bowcock, T. J. V.Bowen, E.Bozzi, C.Brambach, T.Van Den Brand, J.Bressieux, J.Brett, D.Britsch, M.Britton, T.Brook, N. H.Brown, H.Burducea, I.Bursche, A.Busetto, G.Buytaert, J.Cadeddu, S.Callot, O.Calvi, M.Calvo Gomez, M.Camboni, A.Campana, P.Perez, D. CamporaCarbone, A.Carboni, G.Cardinale, R.Cardini, A.Carranza-Mejia, H.Carson, L.Akiba, K. CarvalhoCasse, G.Garcia, L. CastilloCattaneo, M.Cauet, ChCenci, R.Charles, M.Charpentier, Ph.Chen, P.Chiapolini, N.Chrzaszcz, M.Ciba, K.Vidal, X. CidCiezarek, G.Clarke, P. E. L.Clemencic, M.Cliff, H. V.Closier, J.Coca, C.Coco, V.Cogan, J.Cogneras, E.Collins, P.Comerma-Montells, A.Contu, A.Cook, A.Coombes, M.Coquereau, S.Corti, G.Couturier, B.Cowan, G. A.Craik, D. C.Cunliffe, S.Currie, R.D'Ambrosio, C.David, P.David, P. N. Y.Davis, A.De Bonis, I.De Bruyn, K.De Capua, S.De Cian, M.De Miranda, J. M.De Paula, L.De Silva, W.De Simone, P.Decamp, D.Deckenhoff, M.Del Buono, L.Deleage, N.Derkach, D.Deschamps, O.Dettori, F.Di Canto, A.Dijkstra, H.Dogaru, M.Donleavy, S.Dordei, F.Dosil Suarez, A.Dossett, D.Dovbnya, A.Dupertuis, F.Durante, P.Dzhelyadin, R.Dziurda, A.Dzyuba, A.Easo, S.Egede, U.Egorychev, V.Eidelman, S.Van Eijk, D.Eisenhardt, S.Eitschberger, U.Ekelhof, R.Eklund, L.El Rifai, I.Elsasser, ChFalabella, A.Faerber, C.Fardell, G.Farinelli, C.Farry, S.Fave, V.Ferguson, D.Fernandez Albor, V.Ferreira Rodrigues, F.Ferro-Luzzi, M.Filippov, S.Fiore, M.Fitzpatrick, C.Fontana, M.Fontanelli, F.Forty, R.Francisco, O.Frank, M.Frei, C.Frosini, M.Furcas, S.Furfaro, E.Gallas Torreira, A.Galli, D.Gandelman, M.Gandini, P.Gao, Y.Garofoli, J.Garosi, P.Tico, J. GarraGarrido, L.Gaspar, C.Gauld, R.Gersabeck, E.Gersabeck, M.Gershon, T.Ghez, Ph.Gibson, V.Giubega, L.Gligorov, V. V.Goebel, C.Golubkov, D.Golutvin, A.Gomes, A.Gordon, H.Gandara, M. GrabalosaGraciani Diaz, R.Cardoso, L. A. GranadoGrauges, E.Graziani, G.Grecu, A.Greening, E.Gregson, S.Griffith, P.Gruenberg, O.Gui, B.Gushchin, E.Guz, Yu.Gys, T.Hadjivasiliou, C.Haefeli, G.Haen, C.Haines, S. C.Hall, S.Hamilton, B.Hampson, T.Hansmann-Menzemer, S.Harnew, N.Harnew, S. T.Harrison, J.Hartmann, T.He, J.Head, T.Heijne, V.Hennessy, K.Henrard, P.Hernando Morata, J. A.Van Herwijnen, E.Hicheur, A.Hicks, E.Hill, D.Hoballah, M.Hombach, C.Hopchev, P.Hulsbergen, W.Hunt, P.Huse, T.Hussain, N.Hutchcroft, D.Hynds, D.Iakovenko, V.Idzik, M.Ilten, P.Jacobsson, R.Jaeger, A.Jans, E.Jaton, P.Jawahery, A.Jing, F.John, M.Johnson, D.Jones, C. R.Joram, C.Jost, B.Kaballo, M.Kandybei, S.Kanso, W.Karacson, M.Karbach, T. M.Kenyon, I. R.Ketel, T.Keune, A.Khanji, B.Kochebina, O.Komarov, I.Koopman, R. F.Koppenburg, P.Korolev, M.Kozlinskiy, A.Kravchuk, L.Kreplin, K.Kreps, M.Krocker, G.Krokovny, P.Kruse, F.Kucharczyk, M.Kudryavtsev, V.Kvaratskheliya, T.Thi, V. N. LaLacarrere, D.Lafferty, G.Lai, A.Lambert, D.Lambert, R. W.Lanciotti, E.Lanfranchi, G.Langenbruch, C.Latham, T.Lazzeroni, C.Le Gac, R.Van Leerdam, J.Lees, J-P.Lefevre, R.Leflat, A.Lefrancois, J.Leo, S.Leroy, O.Lesiak, T.Leverington, B.Li, Y.Li Gioi, L.Liles, M.Lindner, R.Linn, C.Liu, B.Liu, G.Lohn, S.Longstaff, I.Lopes, J. H.Lopez-March, N.Lu, H.Lucchesi, D.Luisier, J.Luo, H.Machefert, F.Machikhiliyan, I. V.Maciuc, F.Maev, O.Malde, S.Manca, G.Mancinelli, G.Maratas, J.Marconi, U.Marino, P.Maerki, R.Marks, J.Martellotti, G.Martens, A.Sanchez, A. MartinMartinelli, M.Santos, D. MartinezMartins Tostes, D.Massafferri, A.Matev, R.Mathe, Z.Matteuzzi, C.Maurice, E.Mazurov, A.Mcskelly, B.Mccarthy, J.Mcnab, A.Mcnulty, R.Meadows, B.Meier, F.Meissner, M.Merk, M.Milanes, D. A.Minard, M-N.Rodriguez, J. MolinaMonteil, S.Moran, D.Morawski, P.Morda, A.Morello, M. J.Mountain, R.Mous, I.Muheim, F.Mueller, K.Muresan, R.Muryn, B.Muster, B.Naik, P.Nakada, T.Nandakumar, R.Nasteva, I.Needham, M.Neubert, S.Neufeld, N.Nguyen, A. D.Nguyen, T. D.Nguyen-Mau, C.Nicol, M.Niess, V.Niet, R.Nikitin, N.Nikodem, T.Nomerotski, A.Novoselov, A.Oblakowska-Mucha, A.Obraztsov, V.Oggero, S.Ogilvy, S.Okhrimenko, O.Oldeman, R.Orlandea, M.Otalora Goicochea, J. M.Owen, P.Oyanguren, A.Pal, B. K.Palano, A.Palutan, M.Panman, J.Papanestis, A.Pappagallo, M.Parkes, C.Parkinson, C. J.Passaleva, G.Patel, G. D.Patel, M.Patrick, G. N.Patrignani, C.Pavel-Nicorescu, C.Pazos Alvarez, A.Pellegrino, A.Penso, G.Altarelli, M. PepePerazzini, S.Perez Trigo, E.Perez-Calero Yzquierdo, A.Perret, P.Perrin-Terrin, M.Pescatore, L.Pessina, G.Petridis, K.Petrolini, A.Phan, A.Olloqui, E. PicatostePietrzyk, B.Pilar, T.Pinci, D.Playfer, S.Plo Casasus, M.Polci, F.Polok, G.Poluektov, A.Polycarpo, E.Popov, A.Popov, D.Popovici, B.Potterat, C.Powell, A.Prisciandaro, J.Pritchard, A.Prouve, C.Pugatch, V.Navarro, A. PuigPunzi, G.Qian, W.Rademacker, J. H.Rakotomiaramanana, B.Rangel, M. S.Raniuk, I.Rauschmayr, N.Raven, G.Redford, S.Reid, M. M.Dos Reis, A. C.Ricciardi, S.Richards, A.Rinnert, K.Rives Molina, V.Romero, D. A. RoaRobbe, P.Roberts, D. A.Rodrigues, E.Rodriguez Perez, P.Roiser, S.Romanovsky, V.Romero Vidal, A.Rouvinet, J.Ruf, T.Ruffini, F.Ruiz, H.Ruiz Valls, P.Sabatino, G.Saborido Silva, J. J.Sagidova, N.Sail, P.Saitta, B.Salustino Guimaraes, V.Salzmann, C.Sanmartin Sedes, B.Sannino, M.Santacesaria, R.Santamarina Rios, C.Santovetti, E.Sapunov, M.Sarti, A.Satriano, C.Satta, A.Savrie, M.Savrina, D.Schaack, P.Schiller, M.Schindler, H.Schlupp, M.Schmelling, M.Schmidt, B.Schneider, O.Schopper, A.Schune, M-H.Schwemmer, R.Sciascia, B.Sciubba, A.Seco, M.Semennikov, A.Senderowska, K.Sepp, I.Serra, N.Serrano, J.Seyfert, P.Shapkin, M.Shapoval, I.Shatalov, P.Shcheglov, Y.Shears, T.Shekhtman, L.Shevchenko, O.Shevchenko, V.Shires, A.Coutinho, R. SilvaSirendi, M.Skwarnicki, T.Smith, N. A.Smith, E.Smith, J.Smith, M.Sokoloff, M. D.Soler, F. J. P.Soomro, F.Souza, D.Souza De Paula, B.Spaan, B.Sparkes, A.Spradlin, P.Stagni, F.Stahl, S.Steinkamp, O.Stevenson, S.Stoica, S.Stone, S.Storaci, B.Straticiuc, M.Straumann, U.Subbiah, V. K.Sun, L.Swientek, S.Syropoulos, V.Szczekowski, M.Szczypka, P.Szumlak, T.T'Jampens, S.Teklishyn, M.Teodorescu, E.Teubert, F.Thomas, C.Thomas, E.Van Tilburg, J.Tisserand, V.Tobin, M.Tolk, S.Tonelli, D.Topp-Joergensen, S.Torr, N.Tournefier, E.Tourneur, S.Tran, M. T.Tresch, M.Tsaregorodtsev, A.Tsopelas, P.Tuning, N.Ubeda Garcia, M.Ukleja, A.Urner, D.Ustyuzhanin, A.Uwer, U.Vagnoni, V.Valenti, G.Vallier, A.Van Dijk, M.Vazquez Gomez, R.Vazquez Regueiro, P.Vazquez Sierra, C.Vecchi, S.Velthuis, J. J.Veltri, M.Veneziano, G.Vesterinen, M.Viaud, B.Vieira, D.Vilasis-Cardona, X.Vollhardt, A.Volyanskyy, D.Voong, D.Vorobyev, A.Vorobyev, V.Voss, C.Voss, H.Waldi, R.Wallace, C.Wallace, R.Wandernoth, S.Wang, J.Ward, D. R.Watson, N. K.Webber, A. D.Websdale, D.Whitehead, M.Wicht, J.Wiechczynski, J.Wiedner, D.Wiggers, L.Wilkinson, G.Williams, M. P.Williams, M.Wilson, F. F.Wimberley, J.Wishahi, J.Witek, M.Wotton, S. A.Wright, S.Wu, S.Wyllie, K.Xie, Y.Xing, Z.Yang, Z.Young, R.Yuan, X.Yushchenko, O.Zangoli, M.Zavertyaev, M.Zhang, F.Zhang, L.Zhang, W. C.Zhang, Y.Zhelezov, A.Zhokhov, A.Zhong, L.Zvyagin, A.2013-11-042013-11-042013-11-04201310.1103/PhysRevLett.111.141801https://infoscience.epfl.ch/handle/20.500.14299/96619WOS:000325366100002A search for the lepton-flavor-violating decays B-s(0) -> e(+/-)mu(-/+) and B-0 -> e(+/-)mu(-/+) is performed with a data sample, corresponding to an integrated luminosity of 1.0 fb(-1) of pp collisions at root s = 7 TeV, collected by the LHCb experiment. The observed number of B-s(0) -> e(+/-)mu(-/+) and B-0 -> e(+/-)mu(-/+) candidates is consistent with background expectations. Upper limits on the branching fractions of both decays are determined to be B(B-s(0) -> e(+/-)mu(-/+)) < 1.1(1.4) x 10(-8) and B(B-0 -> e(+/-)mu(-/+)) < 2.8(3.7) x 10(-9) at 90% (95%) confidence level (C.L.). These limits are a factor of 20 lower than those set by previous experiments. Lower bounds on the Pati-Salam leptoquark masses are also calculated, M-LQ(B-s(0) -> e(+/-)mu(-/+)) > 101 TeV/c(2) and M-LQ(B-0 -> e(+/-)mu -/+) > 126 TeV/c(2) at 95% C.L., and are a factor of 2 higher than the previous bounds.text::journal::journal article::research article