Aaij, R.Adeva, B.Adinolfi, M.Adrover, C.Affolder, A.Agari, M.Ajaltouni, Z.Albrecht, J.Alessio, F.Alexander, M.Alvarez Cartelle, P.Alves, A. A.Amato, S.Amhis, Y.Amoraal, J.Anderson, J.Nobrega, R. AntunesAppleby, R. B.Gutierrez, O. AquinesArefyev, A.Arrabito, L.Artuso, M.Aslanides, E.Auriemma, G.Bachmann, S.Bailey, D. S.Balagura, V.Baldini, W.Barlow, R. J.Barschel, C.Barsuk, S.Basiladze, S.Bates, A.Bauer, C.Bauer, ThBay, A.Bediaga, I.Belous, K.Belyaev, I.Benayoun, M.Bencivenni, G.Bernet, R.Bettler, M.-O.van Beuzekom, M.Bifani, S.Bizzeti, A.Bjornstad, P. M.Blake, T.Blanc, F.Blanks, C.Blouw, J.Blusk, S.Bobrov, A.Bocci, V.Bochin, B.Bondar, A.Bondar, N.Bonivento, W.Borghi, S.Borgia, A.Bos, E.Bowcock, T. J. V.Bozzi, C.Brambach, T.van den Brand, J.Bressieux, J.Brisbane, S.Britsch, M.Britton, T.Brook, N. H.Brown, H.Buechler-Germann, A.Bursche, A.Buytaert, J.Cadeddu, S.Carvajal, J. M. CaicedoCallot, O.Calvi, M.Calvo Gomez, M.Camboni, A.Cameron, W.Camilleri, L.Campana, P.Carbone, A.Carboni, G.Cardinale, R.Cardini, A.Carson, L.Akiba, K. CarvalhoCasse, G.Cattaneo, M.Charles, M.Charpentier, PhCheng, J.Chiapolini, N.Chlopik, A.Christiansen, J.Ciambrone, P.Cid Vidal, X.Clark, P. J.Clarke, P. E. L.Clemencic, M.Cliff, H. V.Closier, J.Coca, C.Coco, V.Cogan, J.Collins, P.Constantin, F.Conti, G.Contu, A.Coombes, M.Corti, G.Cowan, G. A.Currie, R.D'Almagne, B.D'Ambrosio, C.D'Antone, I.Da Silva, W.Dane, E.David, P.De Bonis, I.De Capua, S.De Cian, M.De Lorenzi, F.De Miranda, J. M.De Paula, L.De Simone, P.Decamp, D.Degaudenzi, H.Deissenroth, M.Del Buono, L.Deplano, C.Deschamps, O.Dettori, F.Dickens, J.Dijkstra, H.Dima, M.Donleavy, S.Dornan, P.Dossett, D.Dovbnya, A.Dupertuis, F.Dzhelyadin, R.Eames, C.Easo, S.Egede, U.Egorychev, V.Eidelman, S.van Eijk, D.Eisele, F.Eisenhardt, S.Eklund, L.d'Enterria, D. G.Esperante Pereira, D.Esteve, L.Fanchini, E.Faerber, C.Fardell, G.Farinelli, C.Farry, S.Fave, V.Fernandez Albor, V.Ferro-Luzzi, M.Filippov, S.Fitzpatrick, C.Flegel, W.Fontanelli, F.Forty, R.Frank, M.Frei, C.Frosini, M.Fungueirino Pazos, J. L.Furcas, S.Gallas Torreira, A.Galli, D.Gandelman, M.Gandini, P.Gao, Y.Garnier, J.-C.Garofoli, J.Garrido, L.Gaspar, C.Gassner, J.Gauvin, N.Gavillet, P.Gersabeck, M.Gershon, T.Ghez, PhGibson, V.Gligorov, V. V.Goebel, C.Golubkov, D.Golutvin, A.Gomes, A.Gong, G.Gong, H.Gordon, H.Grabalosa Gandara, M.Graciani Diaz, R.Cardoso, L. A. GranadoGrauges, E.Graziani, G.Grecu, A.Gregson, S.Gui, B.Gushchin, E.Guz, YuGuzik, Z.Gys, T.Haefeli, G.Haines, S. C.Hampson, T.Hansmann-Menzemer, S.Harji, R.Harnew, N.Harrison, P. F.He, J.Hennessy, K.Henrard, P.Hernando Morata, J. A.van Herwijnen, E.Hicheur, A.Hicks, E.Hilke, H. J.Hofmann, W.Holubyev, K.Hopchev, P.Hulsbergen, W.Hunt, P.Huse, T.Huston, R. S.Hutchcroft, D.Iakovenko, V.Iglesias Escudero, C.Ilgner, C.Ilten, P.Imong, J.Jacobsson, R.Hussein, M. JahjahJans, E.Jansen, F.Jaton, P.Jean-Marie, B.Jing, F.John, M.Johnson, D.Jones, C. R.Jost, B.Kapusta, F.Karbach, T. M.Kashchuk, A.Keaveney, J.Kerzel, U.Ketel, T.Keune, A.Khanji, B.Kim, Y. M.Knecht, M.Koblitz, S.Konoplyannikov, A.Koppenburg, P.Korolev, M.Kozlinskiy, A.Kravchuk, L.Krocker, G.Krokovny, P.Kruse, F.Kruzelecki, K.Kucharczyk, M.Kukulak, S.Kumar, R.Kvaratskheliya, T.La Thi, V. N.Lacarrere, D.Lafferty, G.Lai, A.Lambert, R. W.Lanfranchi, G.Langenbruch, C.Latham, T.Le Gac, R.van Leerdam, J.Lees, J.-P.Lefevre, R.Leflat, A.Lefrancois, J.Lehner, F.Leroy, O.Lesiak, T.Li, L.Li, Y. Y.Gioi, L. LiLibby, J.Lieng, M.Liles, M.Lindner, R.Linn, C.Liu, B.Liu, G.Loechner, S.Lopes, J. H.Lopez Asamar, E.Lopez-March, N.Luisier, J.M'charek, B.Machefert, F.Machikhiliyan, I. V.Maciuc, F.Maev, O.Magnin, J.Maier, A.Malde, S.Mamunur, R. M. D.Manca, G.Mancinelli, G.Mangiafave, N.Marconi, U.Maerki, R.Marks, J.Martellotti, G.Martens, A.Martin, L.Sanchez, A. MartinSantos, D. MartinezMassafferri, A.Mathe, Z.Matteuzzi, C.Matveev, M.Matveev, V.Maurice, E.Maynard, B.Mazurov, A.McGregor, G.McNulty, R.Mclean, C.Meissner, M.Merk, M.Merkel, J.Merkin, M.Messi, R.Miglioranzi, S.Milanes, D. A.Minard, M.-N.Montei, S.Moran, D.Morawski, P.Morris, J. V.Moscicki, J.Mountain, R.Mous, I.Muheim, F.Mueller, K.Muresan, R.Murtas, F.Muryn, B.Musy, M.Mylroie-Smith, J.Naik, P.Nakada, T.Nandakumar, R.Nardulli, J.Nawrot, A.Nedos, M.Needham, M.Neufeld, N.Neustroev, P.Nicol, M.Nies, S.Niess, V.Nikitin, N.Oblakowska-Mucha, A.Obraztsov, V.Oggero, S.Okhrimenko, O.Oldeman, R.Orlandea, M.Ostankov, A.Pal, B.Palacios, J.Palutan, M.Panman, J.Papanestis, A.Pappagallo, M.Parkes, C.Parkinson, C. J.Passaleva, G.Patel, G. D.Patel, M.Paterson, S. K.Patrick, G. N.Patrignani, C.Pauna, E.Pauna (Chiojdeanu), C.Pavel (Nicorescu), C.Pazos Alvarez, A.Pellegrino, A.Penso, G.Altarelli, M. PepePerazzini, S.Perego, D. L.Perez Trigo, E.Perez-Calero Yzquierdo, A.Perret, P.Pessina, G.Petrella, A.Petrolini, A.Pie Valls, B.Pietrzyk, B.Pinci, D.Plackett, R.Playfer, S.Plo Casasus, M.Polok, G.Poluektov, A.Polycarpo, E.Popov, D.Popovici, B.Potterat, C.Powell, A.Pozzi, S.du Pree, T.Pugatch, V.Puig Navarro, A.Qian, W.Rademacker, J. H.Rakotomiaramanana, B.Raniuk, I.Raven, G.Redford, S.Reece, W.dos Reis, A. C.Ricciardi, S.Rinnert, K.Romero, D. A. RoaRobbe, P.Rodrigues, E.Rodrigues, F.Rodriguez Cobo, C.Rodriguez Perez, P.Rogers, G. J.Romanovsky, V.Rouvinet, J.Ruf, T.Ruiz, H.Rusinov, V.Sabatino, G.Saborido Silva, J. J.Sagidova, N.Sail, P.Saitta, B.Salzmann, C.Varela, A. SambadeSannino, M.Santacesaria, R.Santinelli, R.Santovetti, E.Sapunov, M.Saputi, A.Sarti, A.Satriano, C.Satta, A.Savrie, M.Savrina, D.Schaack, P.Schiller, M.Schleich, S.Schmelling, M.Schmidt, B.Schneider, O.Schneider, T.Schopper, A.Schune, M.-H.Schwemmer, R.Sciubba, A.Seco, M.Semennikov, A.Senderowska, K.Serra, N.Serrano, J.Shao, B.Shapkin, M.Shapoval, I.Shatalov, P.Shcheglov, Y.Shears, T.Shekhtman, L.Shevchenko, O.Shevchenko, V.Shires, A.Simioni, E.Skottowe, H. P.Skwarnicki, T.Smale, N.Smith, A.Smith, A. C.Sobczak, K.Soler, F. J. P.Solomin, A.Somogy, P.Soomro, F.Paula, DeSouza, B.Spaan, B.Sparkes, A.Spiridenkov, E.Spradlin, P.Srednicki, A.Stagni, F.Steiner, S.Steinkamp, O.Stenyakin, O.Stoica, S.Stone, S.Storaci, B.Straumann, U.Styles, N.Szczekowski, M.Szczypka, P.Szumlak, T.T'Jampens, S.Talanov, V.Tarkovskiy, E.Teodorescu, E.Terrier, H.Teubert, F.Thomas, C.Thomas, E.van Tilburg, J.Tisserand, V.Tobin, M.Topp-Joergensen, S.Tran, M. T.Traynor, S.Trunk, U.Tsaregorodtsev, A.Tuning, N.Ukleja, A.Urquijo, P.Uwer, U.Vagnoni, V.Valenti, G.Vazquez Gomez, R.Vazquez Regueiro, P.Vecchi, S.Velthuis, J. J.Veltri, M.Vervink, K.Viaud, B.Videau, I.Vilasis-Cardona, X.Visniakov, J.Vollhardt, A.Voong, D.Vorobyev, A.Vorobyev, AnVoss, H.Wacker, K.Wandernoth, S.Wang, J.Ward, D. R.Webber, A. D.Websdale, D.Whitehead, M.Wiedner, D.Wiggers, L.Wilkinson, G.Williams, M. P.Williams, M.Wilson, F. F.Wishahi, J.Witek, M.Witzeling, W.Wotton, S. A.Wyllie, K.Xie, Y.Xing, F.Yang, Z.Smit, G. YbelesYoung, R.Yushchenko, O.Zavertyaev, M.Zeng, M.Zhang, L.Zhang, W. C.Zhang, Y.Zhelezov, A.Zhong, L.Zverev, E.2011-12-162011-12-162011-12-16201110.1016/j.physletb.2011.02.039https://infoscience.epfl.ch/handle/20.500.14299/74257WOS:000289131600003Using data collected with the LHCb detector in proton-proton collisions at a centre-of-mass energy of 7 TeV, the semileptonic decays (B) over bar (0)(s) -> D+X mu(-)(nu) over bar and (B) over bar (0)(s) -> (DK+X)-K-0 mu(-)(nu) over bar are detected. Two structures are observed in the (DK+)-K-0 mass spectrum at masses consistent with the known D-s1(2536)(+) and D-s2*(2573)(+) mesons. The measured branching fractions relative to the total (B) over bar (0)(s) semileptonic rate are B((B) over bar (0)(s) -> (Ds2X)-X-*mu(-)(nu) over bar /B(B-2(-0) -> X mu(-)(nu) over bar) = (3.3 +/- 1.0 +/- 0.4)%, and B((B) over bar (0)(s) -> (Ds2X)-X-*mu(-)(nu) over bar /B(B-2(-0) -> X mu(-)(nu) over bar) = (5.4 +/- 1.2 +/- 0.5)%, where the first uncertainty is statistical and the second is systematic. This is the first observation of the D-s2*(+) state in B-s2*(+) decays; we also measure its mass and width. (C) 2011 CERN. Published by Elsevier B.V. All rights reserved.LhcSemileptonic b decays(B)over-bar(s)(0) mesontext::journal::journal article::research article