학술논문

First observation of the decay $\bar{B}^0_s \to D^0 K^{*0}$ and a measurement of the ratio of branching fractions $\frac{{\cal B}(\bar{B}^0_s \to D^0 K^{*0})}{{\cal B}(\bar{B}^0 \to D^0 \rho^0)}$
Document Type
Working Paper
Author
LHCb CollaborationAaij, R.Beteta, C. AbellanAdeva, B.Adinolfi, M.Adrover, C.Affolder, A.Ajaltouni, Z.Albrecht, J.Alessio, F.Alexander, M.Alkhazov, G.Cartelle, P. AlvarezAlves Jr, A. A.Amato, S.Amhis, Y.Anderson, J.Appleby, R. B.Gutierrez, O. AquinesArchilli, F.Arrabito, L.Artamonov, A.Artuso, M.Aslanides, E.Auriemma, G.Bachmann, S.Back, J. J.Bailey, D. S.Balagura, V.Baldini, W.Barlow, R. J.Barschel, C.Barsuk, S.Barter, W.Bates, A.Bauer, C.Bauer, Th.Bay, A.Bediaga, I.Belous, K.Belyaev, I.Ben-Haim, E.Benayoun, M.Bencivenni, G.Benson, S.Benton, J.Bernet, R.Bettler, M. -O.van Beuzekom, M.Bien, A.Bifani, S.Bizzeti, A.Bjørnstad, P. M.Blake, T.Blanc, F.Blanks, C.Blouw, J.Blusk, S.Bobrov, A.Bocci, V.Bondar, A.Bondar, N.Bonivento, W.Borghi, S.Borgia, A.Bowcock, T. J. V.Bozzi, C.Brambach, T.Brand, J. van denBressieux, J.Brett, D.Brisbane, S.Britsch, M.Britton, T.Brook, N. H.Brown, H.Büchler-Germann, A.Burducea, I.Bursche, A.Buytaert, J.Cadeddu, S.Carvajal, J. M. CaicedoCallot, O.Calvi, M.Gomez, M. CalvoCamboni, A.Campana, P.Carbone, A.Carboni, G.Cardinale, R.Cardini, A.Carson, L.Akiba, K. CarvalhoCasse, G.Cattaneo, M.Charles, M.Charpentier, Ph.Chiapolini, N.Ciba, K.Vidal, X. CidCiezarek, G.Clarke, P. E. L.Clemencic, M.Cliff, H. V.Closier, J.Coca, C.Coco, V.Cogan, J.Collins, P.Comerma-Montells, A.Constantin, F.Conti, G.Contu, A.Cook, A.Coombes, M.Corti, G.Cowan, G. A.Currie, R.D'Almagne, B.D'Ambrosio, C.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.Deckenhoff, M.Degaudenzi, H.Deissenroth, M.Del Buono, L.Deplano, C.Deschamps, O.Dettori, F.Dickens, J.Dijkstra, H.Batista, P. DinizBonal, F. DomingoDonleavy, S.Suárez, A. DosilDossett, D.Dovbnya, A.Dupertuis, F.Dzhelyadin, R.Easo, S.Egede, U.Egorychev, V.Eidelman, S.van Eijk, D.Eisele, F.Eisenhardt, S.Ekelhof, R.Eklund, L.Elsasser, Ch.d'Enterria, D. G.Pereira, D. EsperanteEstéve, L.Falabella, A.Fanchini, E.Färber, C.Fardell, G.Farinelli, C.Farry, S.Fave, V.Albor, V. FernandezFerro-Luzzi, M.Filippov, S.Fitzpatrick, C.Fontana, M.Fontanelli, F.Forty, R.Frank, M.Frei, C.Frosini, M.Furcas, S.Torreira, A. GallasGalli, D.Gandelman, M.Gandini, P.Gao, Y.Garnier, J-C.Garofoli, J.Tico, J. GarraGarrido, L.Gascon, D.Gaspar, C.Gauvin, N.Gersabeck, M.Gershon, T.Ghez, Ph.Gibson, V.Gligorov, V. V.Göbel, C.Golubkov, D.Golutvin, A.Gomes, A.Gordon, H.Gándara, M. GrabalosaDiaz, R. GracianiCardoso, L. A. GranadoGraugés, E.Graziani, G.Grecu, A.Greening, E.Gregson, S.Gui, B.Gushchin, E.Guz, Yu.Gys, T.Haefeli, G.Haen, C.Haines, S. C.Hampson, T.Hansmann-Menzemer, S.Harji, R.Harnew, N.Harrison, J.Harrison, P. F.He, J.Heijne, V.Hennessy, K.Henrard, P.Morata, J. A. Hernandovan Herwijnen, E.Hicks, E.Hofmann, W.Holubyev, K.Hopchev, P.Hulsbergen, W.Hunt, P.Huse, T.Huston, R. S.Hutchcroft, D.Hynds, D.Iakovenko, V.Ilten, P.Imong, J.Jacobsson, R.Jaeger, A.Hussein, M. JahjahJans, E.Jansen, F.Jaton, P.Jean-Marie, B.Jing, F.John, M.Johnson, D.Jones, C. R.Jost, B.Kandybei, S.Karacson, M.Karbach, T. M.Keaveney, J.Kerzel, U.Ketel, T.Keune, A.Khanji, B.Kim, Y. M.Knecht, M.Koblitz, S.Koppenburg, P.Kozlinskiy, A.Kravchuk, L.Kreplin, K.Kreps, M.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, D.Lambert, R. W.Lanciotti, E.Lanfranchi, G.Langenbruch, C.Latham, T.Gac, R. Levan Leerdam, J.Lees, J. -P.Lefévre, R.Leflat, A.Lefrançois, J.Leroy, O.Lesiak, T.Li, L.Gioi, L. LiLieng, M.Liles, M.Lindner, R.Linn, C.Liu, B.Liu, G.Lopes, J. H.Asamar, E. LopezLopez-March, N.Luisier, J.Machefert, F.Machikhiliyan, I. V.Maciuc, F.Maev, O.Magnin, J.Malde, S.Mamunur, R. M. D.Manca, G.Mancinelli, G.Mangiafave, N.Marconi, U.Märki, R.Marks, J.Martellotti, G.Martens, A.Martin, L.Sánchez, A. MartínSantos, D. MartinezMassafferri, A.Mathe, Z.Matteuzzi, C.Matveev, M.Maurice, E.Maynard, B.Mazurov, A.McGregor, G.McNulty, R.Mclean, C.Meissner, M.Merk, M.Merkel, J.Messi, R.Miglioranzi, S.Milanes, D. A.Minard, M. -N.Monteil, S.Moran, D.Morawski, P.Mountain, R.Mous, I.Muheim, F.Müller, K.Muresan, R.Muryn, B.Musy, M.Mylroie-Smith, J.Naik, P.Nakada, T.Nandakumar, R.Nardulli, J.Nasteva, I.Nedos, M.Needham, M.Neufeld, N.Nguyen-Mau, C.Nicol, M.Nies, S.Niess, V.Nikitin, N.Nomerotski, A.Oblakowska-Mucha, A.Obraztsov, V.Oggero, S.Ogilvy, S.Okhrimenko, O.Oldeman, R.Orlandea, M.Goicochea, J. M. OtaloraOwen, P.Pal, K.Palacios, J.Palano, A.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.Pavel-Nicorescu, C.Alvarez, A. PazosPellegrino, A.Penso, G.Altarelli, M. PepePerazzini, S.Perego, D. L.Trigo, E. PerezYzquierdo, A. Pérez-CaleroPerret, P.Perrin-Terrin, M.Pessina, G.Petrella, A.Petrolini, A.Olloqui, E. PicatosteValls, B. PiePietrzyk, B.Pilar, T.Pinci, D.Plackett, R.Playfer, S.Casasus, M. PloPolok, G.Poluektov, A.Polycarpo, E.Popov, D.Popovici, B.Potterat, C.Powell, A.Pree, T. duPrisciandaro, J.Pugatch, V.Navarro, A. PuigQian, W.Rademacker, J. H.Rakotomiaramanana, B.Rangel, M. S.Raniuk, I.Raven, G.Redford, S.Reid, M. M.Reis, A. C. dosRicciardi, S.Rinnert, K.Romero, D. A. RoaRobbe, P.Rodrigues, E.Rodrigues, F.Perez, P. RodriguezRogers, G. J.Roiser, S.Romanovsky, V.Rosello, M.Rouvinet, J.Ruf, T.Ruiz, H.Sabatino, G.Silva, J. J. SaboridoSagidova, N.Sail, P.Saitta, B.Salzmann, C.Sannino, M.Santacesaria, R.Santinelli, R.Santovetti, E.Sapunov, M.Sarti, A.Satriano, C.Satta, A.Savrie, M.Savrina, D.Schaack, P.Schiller, M.Schleich, S.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.Shao, B.Shapkin, M.Shapoval, I.Shatalov, P.Shcheglov, Y.Shears, T.Shekhtman, L.Shevchenko, O.Shevchenko, V.Shires, A.Coutinho, R. SilvaSkottowe, H. P.Skwarnicki, T.Smith, A. C.Smith, N. A.Smith, E.Sobczak, K.Soler, F. J. P.Solomin, A.Soomro, F.De Paula, B. SouzaSpaan, B.Sparkes, A.Spradlin, P.Stagni, F.Stahl, S.Steinkamp, O.Stoica, S.Stone, S.Storaci, B.Straticiuc, M.Straumann, U.Styles, N.Subbiah, V. K.Swientek, S.Szczekowski, M.Szczypka, P.Szumlak, T.T'Jampens, S.Teodorescu, E.Teubert, F.Thomas, C.Thomas, E.van Tilburg, J.Tisserand, V.Tobin, M.Topp-Joergensen, S.Torr, N.Tran, M. T.Tsaregorodtsev, A.Tuning, N.Ukleja, A.Urquijo, P.Uwer, U.Vagnoni, V.Valenti, G.Gomez, R. VazquezRegueiro, P. VazquezVecchi, S.Velthuis, J. J.Veltri, M.Vervink, K.Viaud, B.Videau, I.Vilasis-Cardona, X.Visniakov, J.Vollhardt, A.Voong, D.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.Xing, Z.Yang, Z.Young, R.Yushchenko, O.Zavertyaev, M.Zhang, L.Zhang, W. C.Zhang, Y.Zhelezov, A.Zhong, L.Zverev, E.Zvyagin, A.
Source
Physics Letters B, Volume 706, Issue 1, 30 November 2011, Pages 32-39
Subject
High Energy Physics - Experiment
Language
Abstract
The first observation of the decay $\bar{B}^0_s \to D^0 K^{*0}$ using $pp$ data collected by the LHCb detector at a centre-of-mass energy of 7 TeV, corresponding to an integrated luminosity of 36 pb$^{-1}$, is reported. A signal of $34.4 \pm 6.8$ events is obtained and the absence of signal is rejected with a statistical significance of more than nine standard deviations. The $\bar{B}^0_s \to D^0 K^{*0}$ branching fraction is measured relative to that of $\bar{B}^0 \to D^0 \rho^0$: $\frac{{\cal B}(\bar{B}^0_s \to D^0 K^{*0})}{{\cal B}(\bar{B}^0 \to D^0 \rho^0)} = 1.48 \pm 0.34 \pm 0.15 \pm 0.12$, where the first uncertainty is statistical, the second systematic and the third is due to the uncertainty on the ratio of the $B^0$ and $B^0_s$ hadronisation fractions.
Comment: 10 pages, 3 figures, submitted to Phys. Lett. B; ISSN 0370-2693