학술논문

Determination of f_s/f_d for 7 TeV pp collisions and a measurement of the branching fraction of the decay Bd->D-K+
Document Type
Working Paper
Author
LHCb CollaborationAaij, R.Adeva, 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.Amoraal, J.Anderson, J.Appleby, R. B.Gutierrez, O. AquinesArrabito, 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.Brisbane, S.Britsch, M.Britton, T.Brook, N. H.Büchler-Germann, A.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.Vidal, X. CidClarke, P. E. L.Clemencic, M.Cliff, H. V.Closier, J.Coca, C.Coco, V.Cogan, J.Collins, P.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.David, P. N. Y.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. DinizDossett, D.Dovbnya, A.Dupertuis, F.Dzhelyadin, R.Eames, C.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. EsperanteEstève, 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.Garrido, L.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.Gregson, S.Gui, B.Gushchin, E.Guz, Yu.Gys, T.Haefeli, G.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.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.Hussein, M. JahjahJans, E.Jansen, F.Jaton, P.Jean-Marie, B.Jing, F.John, M.Johnson, D.Jones, C. R.Jost, B.Kandybei, S.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.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.Lefèvre, R.Leflat, A.Lefrançois, J.Leroy, O.Lesiak, T.Li, L.Li, Y. Y.Gioi, L. LiLieng, 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.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.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.Morris, J. V.Mountain, R.Mous, I.Muheim, F.Müller, K.Muresan, R.Muryn, B.Musy, M.Naik, P.Nakada, T.Nandakumar, R.Nardulli, J.Nedos, M.Needham, M.Neufeld, N.Nguyen-Mau, C.Nicol, M.Nies, S.Niess, V.Nikitin, N.Oblakowska-Mucha, A.Obraztsov, V.Oggero, S.Ogilvy, S.Okhrimenko, O.Oldeman, R.Orlandea, M.Goicochea, J. M. OtaloraPal, 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.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.Valls, 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. duPugatch, V.Navarro, A. PuigQian, W.Rademacker, J. H.Rakotomiaramanana, B.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.Cobo, C. RodriguezPerez, P. RodriguezRogers, G. J.Romanovsky, V.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.Sciubba, A.Seco, M.Semennikov, A.Senderowska, K.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.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.Straumann, U.Styles, N.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.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.Yang, Z.Young, R.Yushchenko, O.Zavertyaev, M.Zhang, L.Zhang, W. C.Zhang, Y.Zhelezov, A.Zhong, L.Zverev, E.Zvyagin, A.
Source
Physical Review Letters, Vol.107, No.21, 2011
Subject
High Energy Physics - Experiment
Language
Abstract
The relative abundance of the three decay modes $B_d \to D^- K^+$, $B_d \to D^- \pi^+$ and $B_s \to D_s^- \pi^+$ produced in 7 TeV $pp$ collisions at the LHC is determined from data corresponding to an integrated luminosity of 35 pb$^{-1}$. The branching fraction of $B_d \to D^- K^+$ is found to be $\cal B (B_d \to D^- K^+) = (2.01 \pm 0.18^{\textrm{stat}} \pm 0.14^{\textrm{syst}})\times 10^{-4}$. The ratio of fragmentation fractions \fsfdt is determined through the relative abundance of $B_s \to D_s^- \pi^+$ to $B_d \to D^- K^+$ and $B_d \to D^-\pi^+$, leading to $f_s/f_d = 0.253 \pm 0.017 \pm 0.017 \pm 0.020$, where the uncertainties are statistical, systematic, and theoretical respectively.
Comment: Submitted to PRL (7 pages, 2 Figures, 1 Table); Physical Review Letters, Vol.107, No.21, 2011