A Measurement of the Semileptonic Branching Fraction of the B_s Meson

Lees, Jp; Poireau, V; Tisserand, V; Tico, Jg; Grauges, E; Martinelli, M; Milanes, Da; Palano, A; Pappagallo, M; Eigen, G; Stugu, B; Brown, Dn; Kerth, Lt; Kolomensky, Yg; Lynch, G; Koch, H; Schroeder, T; Asgeirsson, Dj; Hearty, C; Mattison, Ts; Mckenna, Ja; Khan, A; Blinov, Ve; Buzykaev, Ar; Druzhinin, Vp; Golubev, Vb; Kravchenko, Ea; Onuchin, Ap; Serednyakov, Si; Skovpen, Yi; Solodov, Ep; Todyshev, Ky; Yushkov, An; Bondioli, M; Kirkby, D; Lankford, Aj; Mandelkern, M; Stoker, Dp; Atmacan, H; Gary, Jw; Liu, F; Long, O; Vitug, Gm; Campagnari, C; Hong, Tm; Kovalskyi, D; Richman, Jd; West, Ca; Eisner, Am; Kroseberg, J; Lockman, Ws; Martinez, Aj; Schalk, T; Schumm, Ba; Seiden, A; Cheng, Ch; Doll, Da; Echenard, B; Flood, Kt; Hitlin, Dg; Ongmongkolkul, P; Porter, Fc; Rakitin, Ay; Andreassen, R; Dubrovin, Ms; Huard, Z; Meadows, Bt; Sokoloff, Md; Sun, L; Bloom, Pc; Ford, Wt; Gaz, A; Nagel, M; Nauenberg, U; Smith, Jg; Wagner, Sr; Ayad, R; Toki, Wh; Spaan, B; Kobel, Mj; Schubert, Kr; Schwierz, R; Bernard, D; Verderi, M; Clark, Pj; Playfer, S; Bettoni, Diego; Bozzi, Concezio; Calabrese, Roberto; Cibinetto, Gianluigi; Fioravanti, Elisa; Garzia, Isabella; Luppi, Eleonora; Munerato, M; Negrini, M; Piemontese, L; Santoro, Valentina; Baldini Ferroli, R; Calcaterra, A; de Sangro, R; Finocchiaro, G; Nicolaci, M; Patteri, P; Peruzzi, Im; Piccolo, M; Rama, M; Zallo, A; Contri, R; Guido, E; Lo Vetere, M; Monge, Mr; Passaggio, S; Patrignani, C; Robutti, E; Bhuyan, B; Prasad, V; Lee, Cl; Morii, M; Edwards, Aj; Adametz, A; Marks, J; Uwer, U; Bernlochner, Fu; Ebert, M; Lacker, Hm; Lueck, T; Dauncey, Pd; Tibbetts, M; Behera, Pk; Mallik, U; Chen, C; Cochran, J; Meyer, Wt; Prell, S; Rosenberg, Ei; Rubin, Ae; Gritsan, Av; Guo, Zj; Arnaud, N; Davier, M; Grosdidier, G; Le Diberder, F; Lutz, Am; Malaescu, B; Roudeau, P; Schune, Mh; Stocchi, A; Wormser, G; Lange, Dj; Wright, Dm; Bingham, I; Chavez, Ca; Coleman, Jp; Fry, Jr; Gabathuler, E; Hutchcroft, De; Payne, Dj; Touramanis, C; Bevan, Aj; Di Lodovico, F; Sacco, R; Sigamani, M; Cowan, G; Brown, Dn; Davis, Cl; Denig, Ag; Fritsch, M; Gradl, W; Hafner, A; Prencipe, E; Alwyn, Ke; Bailey, D; Barlow, Rj; Jackson, G; Lafferty, Gd; Behn, E; Cenci, R; Hamilton, B; Jawahery, A; Roberts, Da; Simi, G; Dallapiccola, C; Cowan, R; Dujmic, D; Sciolla, G; Lindemann, D; Patel, Pm; Robertson, Sh; Schram, M; Biassoni, P; Lazzaro, A; Lombardo, V; Neri, N; Palombo, F; Stracka, S; Cremaldi, L; Godang, R; Kroeger, R; Sonnek, P; Summers, Dj; Nguyen, X; Taras, P; De Nardo, G; Monorchio, D; Onorato, G; Sciacca, C; Raven, G; Snoek, Hl; Jessop, Cp; Knoepfel, Kj; Losecco, Jm; Wang, Wf; Honscheid, K; Kass, R; Brau, J; Frey, R; Sinev, Nb; Strom, D; Torrence, E; Feltresi, E; Gagliardi, N; Margoni, M; Morandin, M; Posocco, M; Rotondo, M; Simonetto, F; Stroili, R; Akar, S; Ben Haim, E; Bomben, M; Bonneaud, Gr; Briand, H; Calderini, G; Chauveau, J; Hamon, O; Leruste, P; Marchiori, G; Ocariz, J; Sitt, S; Biasini, M; Manoni, E; Pacetti, S; Rossi, A; Angelini, C; Batignani, G; Bettarini, S; Carpinelli, M; Casarosa, G; Cervelli, A; Forti, F; Giorgi, Ma; Lusiani, A; Oberhof, B; Paoloni, E; Perez, A; Rizzo, G; Walsh, Jj; Pegna, Dl; C, Lu; Olsen, J; Ajs, Smith; Telnov, Av; Anulli, F; Cavoto, G; Faccini, R; Ferrarotto, F; Ferroni, F; Gioi, Ll; Mazzoni, Ma; Piredda, G; Bunger, C; Grunberg, O; Hartmann, T; Leddig, T; Schroder, H; Waldi, R; Adye, T; Olaiya, Eo; Wilson, Ff; Emery, S; de Monchenault GH,; Vasseur, G; Yeche, C; Aston, D; Bard, Dj; Bartoldus, R; Cartaro, C; Convery, Mr; Dorfan, J; Dubois Felsmann GP,; Dunwoodie, W; Field, Rc; Sevilla, Mf; Fulsom, Bg; Gabareen, Am; Graham, Mt; Grenier, P; Hast, C; Innes, Wr; Kelsey, Mh; Kim, H; Kim, P; Kocian, Ml; Dwgs, Leith; Lewis, P; S, Li; Lindquist, B; Luitz, S; Luth, V; Lynch, Hl; Macfarlane, Db; Muller, Dr; Neal, H; Nelson, S; Ofte, I; Perl, M; Pulliam, T; Ratcliff, Bn; Roodman, A; Salnikov, Aa; Schindler, Rh; Snyder, A; D, Su; Sullivan, Mk; Va'Vra, J; Wagner, Ap; Weaver, M; Wisniewski, Wj; Wittgen, M; Wright, Dh; Wulsin, Hw; Yarritu, Ak; Young, Cc; Ziegler, V; Park, W; Purohit, Mv; White, Rm; Wilson, Jr; Randle Conde, A; Sekula, Sj; Bellis, M; Benitez, Jf; Burchat, Pr; Miyashita, Ts; Alam, Ms; Ernst, Ja; Gorodeisky, R; Guttman, N; Peimer, Dr; Soffer, A; Lund, P; Spanier, Sm; Eckmann, R; Ritchie, Jl; Ruland, Am; Schilling, Cj; Schwitters, Rf; Wray, Bc; Izen, Jm; Lou, Xc; Bianchi, F; Gamba, D; Lanceri, L; Vitale, L; Martinez Vidal, F; Oyanguren, A; Ahmed, H; Albert, J; Banerjee, S; Hhf, Choi; King, Gj; Kowalewski, R; Lewczuk, Mj; Nugent, Im; Roney, Jm; Sobie, Rj; Tasneem, N; Gershon, Tj; Harrison, Pf; Latham, Te; Emt, Puccio; Band, Hr; Dasu, S; Pan, Y; Prepost, R; Sl, Wu

doi:10.1103/PhysRevD.85.011101

We report a measurement of the inclusive semileptonic branching fraction of the B_s meson using data collected with the BaBar detector in the center-of-mass (CM) energy region above the Upsilon(4S) resonance. We use the inclusive yield of phi mesons and the phi yield in association with a high-momentum lepton to perform a simultaneous measurement of the semileptonic branching fraction and the production rate of B_s mesons relative to all B mesons as a function of CM energy. The inclusive semileptonic branching fraction of the B_s meson is determined to be B(B_s to l nu X)=9.5 (+2.5/-2.0)(stat)(+1.1/-1.9)(syst)%, where l indicates the average of e and mu.