Measurement of the B → Xℓ+ℓ- Branching fraction and search for direct CP violation from a sum of exclusive final states

Lees, Jp; Poireau, V; Tisserand, V; Grauges, E; Palano, A; Eigen, G; Stugu, B; Brown, Dn; Kerth, Lt; Kolomensky, Yg; Lee, Mj; Lynch, G; Koch, H; Schroeder, T; Hearty, C; Mattison, Ts; Mckenna, Ja; Ry, So; Khan, A; Blinov, Ve; Buzykaev, Ar; Druzhinin, Vp; Golubev, Vb; Kravchenko, Ea; Onuchin, Ap; Serednyakov, Si; Skovpen, Yi; Solodov, Ep; Todyshev, Ky; Yushkov, An; Lankford, Aj; Mandelkern, M; Dey, B; Gary, Jw; Long, O; Campagnari, C; Sevilla, Mf; Hong, Tm; Kovalskyi, D; Richman, Jd; West, Ca; Eisner, Am; Lockman, Ws; Schumm, Ba; Seiden, A; Chao, Ds; Cheng, Ch; Echenard, B; Flood, Kt; Hitlin, Dg; Miyashita, Ts; Ongmongkolkul, P; Porter, Fc; Andreassen, R; Huard, Z; Meadows, Bt; Pushpawela, Bg; Sokoloff, Md; Sun, L; Bloom, Pc; Ford, Wt; Gaz, A; Nauenberg, U; Smith, Jg; Wagner, Sr; Ayad, R; Toki, Wh; Spaan, B; Schwierz, R; Bernard, D; Verderi, M; Playfer, S; Bettoni, D; Bozzi, C; Calabrese, R; Cibinetto, G; Fioravanti, E; Garzia, I; Luppi, E; Piemontese, L; Santoro, V; Calcaterra, A; De Sangro, R; Finocchiaro, G; Martellotti, S; 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; Morii, M; Adametz, A; Uwer, U; Lacker, Hm; Dauncey, Pd; Mallik, U; Chen, C; Cochran, J; Meyer, Wt; Prell, S; Ahmed, H; Gritsan, Av; Arnaud, N; Davier, M; Derkach, D; Grosdidier, G; Le Diberder, F; Lutz, Am; Malaescu, B; Roudeau, P; Stocchi, A; Wormser, G; Lange, Dj; Wright, Dm; Coleman, Jp; Fry, Jr; Gabathuler, E; Hutchcroft, De; Payne, Dj; Touramanis, C; Bevan, Aj; Di Lodovico, F; Sacco, R; Cowan, G; Bougher, J; Brown, Dn; Davis, Cl; Denig, Ag; Fritsch, M; Gradl, W; Griessinger, K; Hafner, A; Prencipe, E; Schubert, Kr; Barlow, Rj; Lafferty, Gd; Cenci, R; Hamilton, B; Jawahery, A; Roberts, Da; Cowan, R; Dujmic, D; Sciolla, G; Cheaib, R; Patel, Pm; Robertson, Sh; Biassoni, P; Neri, N; Palombo, F; Cremaldi, L; Godang, R; Sonnek, P; Summers, Dj; Simard, M; Taras, P; De Nardo, G; Monorchio, D; Onorato, G; Sciacca, C; Martinelli, M; Raven, G; Jessop, Cp; Losecco, Jm; Honscheid, K; Kass, R; Brau, J; Frey, R; Sinev, Nb; Strom, D; Torrence, E; Feltresi, E; Margoni, M; Morandin, M; Posocco, M; Rotondo, M; Simi, G; Simonetto, F; Stroili, R; Akar, S; Ben Haim, E; Bomben, M; Bonneaud, Gr; Briand, H; Calderini, G; Chauveau, J; 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; Chrzaszcz, M; Forti, F; Giorgi, Ma; Lusiani, A; Oberhof, B; Paoloni, E; Perez, A; Rizzo, G; Walsh, Jj; Pegna, Dl; Olsen, J; Smith, Ajs; Faccini, R; Ferrarotto, F; Ferroni, F; Gaspero, M; Gioi, Ll; Piredda, G; Bunger, C; Grunberg, O; Hartmann, T; Leddig, T; Voss, C; Waldi, R; Adye, T; Olaiya, Eo; Wilson, Ff; Emery, S; De Monchenault, Gh; Vasseur, G; Yeche, C; Anulli, F; Aston, D; Bard, Dj; Benitez, Jf; Cartaro, C; Convery, Mr; Dorfan, J; Dubois Felsmann, Gp; Dunwoodie, W; Ebert, M; Field, Rc; Fulsom, Bg; Gabareen, Am; Graham, Mt; Hast, C; Innes, Wr; Kim, P; Kocian, Ml; Leith, Dwgs; Lewis, P; Lindemann, D; Lindquist, B; Luitz, S; Luth, V; Lynch, Hl; Macfarlane, Db; Muller, Dr; Neal, H; Nelson, S; Perl, M; Pulliam, T; Ratcliff, Bn; Roodman, A; Salnikov, Aa; Schindler, Rh; Snyder, A; Su, D; Sullivan, Mk; Va'Vra, J; Wagner, Ap; Wang, Wf; Wisniewski, Wj; Wittgen, M; Wright, Dh; Wulsin, Hw; Ziegler, V; Park, W; Purohit, Mv; White, Rm; Wilson, Jr; Randle Conde, A; Sekula, Sj; Bellis, M; Burchat, Pr; Puccio, Emt; Alam, Ms; Ernst, Ja; Gorodeisky, R; Guttman, N; Peimer, Dr; Soffer, A; Spanier, Sm; Ritchie, Jl; Ruland, Am; Schwitters, Rf; Wray, Bc; Izen, Jm; Lou, Xc; Bianchi, F; De Mori, F; Filippi, A; Gamba, D; Zambito, S; Lanceri, Livio; Vitale, Lorenzo; Martinez Vidal, F; Oyanguren, A; Villanueva Perez, P; Albert, J; Banerjee, S; Bernlochner, Fu; Choi, Hhf; King, Gj; Kowalewski, R; Lewczuk, Mj; Lueck, T; Nugent, Im; Roney, Jm; Sobie, Rj; Tasneem, N; Gershon, Tj; Harrison, Pf; Latham, Te; Band, Hr; Dasu, S; Pan, Y; Prepost, R; Sl, Wu

doi:10.1103/PhysRevLett.112.211802

We measure the total branching fraction of the flavor-changing neutral-current process B -> X(s)l(+)l(-), along with partial branching fractions in bins of dilepton and hadronic system (X-s) mass, using a sample of 471 x 10(6)Upsilon(4S) -> B (B) over bar events recorded with the BABAR detector. The admixture of charged and neutral B mesons produced at PEP-II2 are reconstructed by combining a dilepton pair with 10 different X-s final states. Extrapolating from a sum over these exclusive modes, we measure a lepton-flavor-averaged inclusive branching fraction B(B -> X(s)l(+)l(-)) = [6.73(-0.64)(+0.70)(stat)(-0.25)(+0.34)(exp syst) +/- 0.50(model syst)] x 10(-6) for m(l+l-)(2) > 0.1 GeV2/c(4). Restricting our analysis exclusively to final states from which a decaying B meson's flavor can be inferred, we additionally report measurements of the direct CP asymmetry A(CP) in bins of dilepton mass; over the full dilepton mass range, we find A(CP) = 0.04 +/- 0.11 +/- 0.01 for a leptonflavor-averaged sample.

Measurement of the B → Xℓ+ℓ- Branching fraction and search for direct CP violation from a sum of exclusive final states / Lees, Jp; Poireau, V; Tisserand, V; Grauges, E; Palano, A; Eigen, G; Stugu, B; Brown, Dn; Kerth, Lt; Kolomensky, Yg; Lee, Mj; Lynch, G; Koch, H; Schroeder, T; Hearty, C; Mattison, Ts; Mckenna, Ja; So, Ry; Khan, A; Blinov, Ve; Buzykaev, Ar; Druzhinin, Vp; Golubev, Vb; Kravchenko, Ea; Onuchin, Ap; Serednyakov, Si; Skovpen, Yi; Solodov, Ep; Todyshev, Ky; Yushkov, An; Lankford, Aj; Mandelkern, M; Dey, B; Gary, Jw; Long, O; Campagnari, C; Sevilla, Mf; Hong, Tm; Kovalskyi, D; Richman, Jd; West, Ca; Eisner, Am; Lockman, Ws; Schumm, Ba; Seiden, A; Chao, Ds; Cheng, Ch; Echenard, B; Flood, Kt; Hitlin, Dg; Miyashita, Ts; Ongmongkolkul, P; Porter, Fc; Andreassen, R; Huard, Z; Meadows, Bt; Pushpawela, Bg; Sokoloff, Md; Sun, L; Bloom, Pc; Ford, Wt; Gaz, A; Nauenberg, U; Smith, Jg; Wagner, Sr; Ayad, R; Toki, Wh; Spaan, B; Schwierz, R; Bernard, D; Verderi, M; Playfer, S; Bettoni, D; Bozzi, C; Calabrese, R; Cibinetto, G; Fioravanti, E; Garzia, I; Luppi, E; Piemontese, L; Santoro, V; Calcaterra, A; de Sangro, R; Finocchiaro, G; Martellotti, S; 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; Morii, M; Adametz, A; Uwer, U; Lacker, Hm; Dauncey, Pd; Mallik, U; Chen, C; Cochran, J; Meyer, Wt; Prell, S; Ahmed, H; Gritsan, Av; Arnaud, N; Davier, M; Derkach, D; Grosdidier, G; Le Diberder, F; Lutz, Am; Malaescu, B; Roudeau, P; Stocchi, A; Wormser, G; Lange, Dj; Wright, Dm; Coleman, Jp; Fry, Jr; Gabathuler, E; Hutchcroft, De; Payne, Dj; Touramanis, C; Bevan, Aj; Di Lodovico, F; Sacco, R; Cowan, G; Bougher, J; Brown, Dn; Davis, Cl; Denig, Ag; Fritsch, M; Gradl, W; Griessinger, K; Hafner, A; Prencipe, E; Schubert, Kr; Barlow, Rj; Lafferty, Gd; Cenci, R; Hamilton, B; Jawahery, A; Roberts, Da; Cowan, R; Dujmic, D; Sciolla, G; Cheaib, R; Patel, Pm; Robertson, Sh; Biassoni, P; Neri, N; Palombo, F; Cremaldi, L; Godang, R; Sonnek, P; Summers, Dj; Simard, M; Taras, P; De Nardo, G; Monorchio, D; Onorato, G; Sciacca, C; Martinelli, M; Raven, G; Jessop, Cp; Losecco, Jm; Honscheid, K; Kass, R; Brau, J; Frey, R; Sinev, Nb; Strom, D; Torrence, E; Feltresi, E; Margoni, M; Morandin, M; Posocco, M; Rotondo, M; Simi, G; Simonetto, F; Stroili, R; Akar, S; Ben Haim, E; Bomben, M; Bonneaud, Gr; Briand, H; Calderini, G; Chauveau, J; 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; Chrzaszcz, M; Forti, F; Giorgi, Ma; Lusiani, A; Oberhof, B; Paoloni, E; Perez, A; Rizzo, G; Walsh, Jj; Pegna, Dl; Olsen, J; Smith, Ajs; Faccini, R; Ferrarotto, F; Ferroni, F; Gaspero, M; Gioi, Ll; Piredda, G; Bunger, C; Grunberg, O; Hartmann, T; Leddig, T; Voss, C; Waldi, R; Adye, T; Olaiya, Eo; Wilson, Ff; Emery, S; de Monchenault, Gh; Vasseur, G; Yeche, C; Anulli, F; Aston, D; Bard, Dj; Benitez, Jf; Cartaro, C; Convery, Mr; Dorfan, J; Dubois Felsmann, Gp; Dunwoodie, W; Ebert, M; Field, Rc; Fulsom, Bg; Gabareen, Am; Graham, Mt; Hast, C; Innes, Wr; Kim, P; Kocian, Ml; Leith, Dwgs; Lewis, P; Lindemann, D; Lindquist, B; Luitz, S; Luth, V; Lynch, Hl; Macfarlane, Db; Muller, Dr; Neal, H; Nelson, S; Perl, M; Pulliam, T; Ratcliff, Bn; Roodman, A; Salnikov, Aa; Schindler, Rh; Snyder, A; Su, D; Sullivan, Mk; Va'Vra, J; Wagner, Ap; Wang, Wf; Wisniewski, Wj; Wittgen, M; Wright, Dh; Wulsin, Hw; Ziegler, V; Park, W; Purohit, Mv; White, Rm; Wilson, Jr; Randle Conde, A; Sekula, Sj; Bellis, M; Burchat, Pr; Puccio, Emt; Alam, Ms; Ernst, Ja; Gorodeisky, R; Guttman, N; Peimer, Dr; Soffer, A; Spanier, Sm; Ritchie, Jl; Ruland, Am; Schwitters, Rf; Wray, Bc; Izen, Jm; Lou, Xc; Bianchi, F; De Mori, F; Filippi, A; Gamba, D; Zambito, S; Lanceri, Livio; Vitale, Lorenzo; Martinez Vidal, F; Oyanguren, A; Villanueva Perez, P; Albert, J; Banerjee, S; Bernlochner, Fu; Choi, Hhf; King, Gj; Kowalewski, R; Lewczuk, Mj; Lueck, T; Nugent, Im; Roney, Jm; Sobie, Rj; Tasneem, N; Gershon, Tj; Harrison, Pf; Latham, Te; Band, Hr; Dasu, S; Pan, Y; Prepost, R; Wu, Sl. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 112:21(2014), pp. 211802.211802-1-211802.211802-8. [10.1103/PhysRevLett.112.211802]