First observation of B¯_s⁰→D_s2^*+Xμ-v¯ decays

Aaij, R. et al. (2011) First observation of B¯_s⁰→D_s2^*+Xμ-v¯ decays. Physics Letters B, 698(1), pp. 14-20. (doi: 10.1016/j.physletb.2011.02.039)

Abstract

Using data collected with the LHCb detector in proton–proton collisions at a centre-of-mass energy of 7 TeV, the semileptonic decays B¯_s⁰→D_s^*Xμ-v¯ and B¯_s⁰→D⁰K⁺Xμ-v¯ are detected. Two structures are observed in the D0K+ mass spectrum at masses consistent with the known Ds1+(2536) and D_s2^*(2573)⁺ mesons. The measured branching fractions relative to the total B¯_s⁰ semileptonic rate are B(B¯_s⁰→D_s2^*+Xμ-v¯)/B(B¯_s⁰→D⁰→Xμ-v¯)=(3.3±1.0±0.4)%, B(B¯_s⁰→D_s1^*+Xμ-v¯)/B(B¯_s⁰→D⁰→Xμ-v¯)= (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¯_s⁰ decays; we also measure its mass and width.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Alexander, Dr Michael and Sail, Mr Paul and Rodrigues, Dr Eduardo and Parkes, Dr Christopher and Bates, Mrs Alison and Soler, Professor Paul and Borghi, Dr Silvia and Plackett, Dr Richard and Eklund, Prof Lars
• Authors: 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., Antunes Nobrega, R., Appleby, R.B., Aquines Gutierrez, O., Arefyev, 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, T., Bay, A., Bediaga, I., Belous, K., Belyaev, I., Benayoun, M., Bencivenni, G., Bernet, R., Bettler, M.-O., van Beuzekom, M., Bifani, S., Bizzeti, A., Bjørnstad, 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., Büchler-Germann, A., Bursche, A., Buytaert, J., Cadeddu, S., Caicedo Carvajal, J.M., Callot, O., Calvi, M., Calvo Gomez, M., Camboni, A., Cameron, W., Camilleri, L., Campana, P., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carson, L., Carvalho Akiba, K., Casse, G., Cattaneo, M., Charles, M., Charpentier, P., Cheng, 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., DʼAlmagne, B., DʼAmbrosio, C., DʼAntone, I., Da Silva, W., Dané, 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., dʼEnterria, D.G., Esperante Pereira, D., Estève, L., Fanchini, E., Färber, 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, P., Gibson, V., Gligorov, V.V., Göbel, C., Golubkov, D., Golutvin, A., Gomes, A., Gong, G., Gong, H., Gordon, H., Grabalosa Gándara, M., Graciani Diaz, R., Granado Cardoso, L.A., Graugés, E., Graziani, G., Grecu, A., Gregson, S., Gui, B., Gushchin, E., Guz, Y., Guzik, 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., Jahjah Hussein, M., Jans, 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., Lefèvre, R., Leflat, A., Lefrançois, J., Lehner, F., Leroy, O., Lesiak, T., Li, L., Li, Y.Y., Li Gioi, L., Libby, J., Lieng, M., Liles, M., Lindner, R., Linn, C., Liu, B., Liu, G., Löchner, S., Lopes, J.H., Lopez Asamar, E., Lopez-March, N., Luisier, J., Mʼcharek, 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., Märki, R., Marks, J., Martellotti, G., Martens, A., Martin, L., Martin Sanchez, A., Martinez Santos, D., Massafferri, 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., Monteil, S., Moran, D., Morawski, P., Morris, J.V., Moscicki, J., Mountain, R., Mous, I., Muheim, F., Müller, 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., Pepe Altarelli, M., Perazzini, S., Perego, D.L., Perez Trigo, E., Pérez-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., Roa Romero, D.A., Robbe, 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., Sambade Varela, A., Sannino, 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., Souza De Paula, 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., TʼJampens, 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, A., Voss, 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., Ybeles Smit, G., Young, R., Yushchenko, O., Zavertyaev, 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• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Physics Letters B
• Publisher: Elsevier BV
• ISSN: 0370-2693
• ISSN (Online): 1873-2445
• Published Online: 18 February 2011
• Copyright Holders: Copyright © 2011 CERN, for the benefit of the LHCb Collaboration
• First Published: First published in Physics Letters B 698(1): 14-20
• Publisher Policy: Reproduced under a Creative Commons license

Project Code	Award No	Project Name	Principal Investigator	Funder's Name	Funder Ref	Lead Dept
39596	3	Experimental Particle Physics	Anthony Doyle	Science & Technologies Facilities Council (STFC)	ST/H001077/1	Physics and Astronomy