We measure branching fractions and integrated rate asymmetries for the rare decays B→K(*)l+l-, where l+l- is either e+e- or μ+μ-, using a sample of 384×106 BB̄ events collected with the BABAR detector at the PEP-II e+e- collider. We find no evidence for direct CP or lepton-flavor asymmetries. However, for dilepton masses below the J/ψ resonance, we find evidence for unexpectedly large isospin asymmetries in both B→Kl+l- and B→K*l+l- which differ, respectively, by 3.2σ and 2.7σ, including systematic uncertainties, from the standard model expectations.

Aubert, B., Bona, M., Karyotakis, Y., Lees, J., Poireau, V., Prencipe, E., et al. (2009). Direct CP, Lepton Flavor, and isospin asymmetries in the decays B→K(*)l+l-. PHYSICAL REVIEW LETTERS, 102(9) [10.1103/PhysRevLett.102.091803].

Direct CP, Lepton Flavor, and isospin asymmetries in the decays B→K(*)l+l-

CARPINELLI, Massimo;
2009

Abstract

We measure branching fractions and integrated rate asymmetries for the rare decays B→K(*)l+l-, where l+l- is either e+e- or μ+μ-, using a sample of 384×106 BB̄ events collected with the BABAR detector at the PEP-II e+e- collider. We find no evidence for direct CP or lepton-flavor asymmetries. However, for dilepton masses below the J/ψ resonance, we find evidence for unexpectedly large isospin asymmetries in both B→Kl+l- and B→K*l+l- which differ, respectively, by 3.2σ and 2.7σ, including systematic uncertainties, from the standard model expectations.
Articolo in rivista - Articolo scientifico
BABAR detector
English
B. Aubert et al. (BABAR Collaboration)
Aubert, B., Bona, M., Karyotakis, Y., Lees, J., Poireau, V., Prencipe, E., et al. (2009). Direct CP, Lepton Flavor, and isospin asymmetries in the decays B→K(*)l+l-. PHYSICAL REVIEW LETTERS, 102(9) [10.1103/PhysRevLett.102.091803].
Aubert, B; Bona, M; Karyotakis, Y; Lees, J; Poireau, V; Prencipe, E; Prudent, X; Tisserand, V; Tico, J; Grauges, E; Lopez, L; Palano, A; Pappagallo, M; Eigen, G; Stugu, B; Sun, L; Abrams, G; Battaglia, M; Brown, D; Cahn, R; Jacobsen, R; Kerth, L; Kolomensky, Y; Lynch, G; Osipenkov, I; Ronan, M; Tackmann, K; Tanabe, T; Hawkes, C; Soni, N; Watson, A; Koch, H; Schroeder, T; Walker, D; Asgeirsson, D; Fulsom, B; Hearty, C; Mattison, T; Mckenna, J; Barrett, M; Khan, A; Blinov, V; Bukin, A; Buzykaev, A; Druzhinin, V; Golubev, V; Onuchin, A; Serednyakov, S; Skovpen, Y; Solodov, E; Todyshev, K; Bondioli, M; Curry, S; Eschrich, I; Kirkby, D; Lankford, A; Lund, P; Mandelkern, M; Martin, E; Stoker, D; Abachi, S; Buchanan, C; Gary, J; Liu, F; Long, O; Shen, B; Vitug, G; Yasin, Z; Zhang, L; Sharma, V; Campagnari, C; Hong, T; Kovalskyi, D; Mazur, M; Richman, J; Beck, T; Eisner, A; Flacco, C; Heusch, C; Kroseberg, J; Lockman, W; Schalk, T; Schumm, B; Seiden, A; Wang, L; Wilson, M; Winstrom, L; Cheng, C; Doll, D; Echenard, B; Fang, F; Hitlin, D; Narsky, I; Piatenko, T; Porter, F; Andreassen, R; Mancinelli, G; Meadows, B; Mishra, K; Sokoloff, M; Bloom, P; Ford, W; Gaz, A; Hirschauer, J; Nagel, M; Nauenberg, U; Smith, J; Ulmer, K; Wagner, S; Ayad, R; Soffer, A; Toki, W; Wilson, R; Altenburg, D; Feltresi, E; Hauke, A; Jasper, H; Karbach, M; Merkel, J; Petzold, A; Spaan, B; Wacker, K; Kobel, M; Mader, W; Nogowski, R; Schubert, K; Schwierz, R; Sundermann, J; Volk, A; Bernard, D; Bonneaud, G; Latour, E; Thiebaux, C; Verderi, M; Clark, P; Gradl, W; Playfer, S; Watson, J; Andreotti, M; Bettoni, D; Bozzi, C; Calabrese, R; Cecchi, A; Cibinetto, G; Franchini, P; Luppi, E; Negrini, M; Petrella, A; Piemontese, L; Santoro, V; Baldini Ferroli, R; Calcaterra, A; de Sangro, R; Finocchiaro, G; Pacetti, S; Patteri, P; Peruzzi, I; Piccolo, M; Rama, M; Zallo, A; Buzzo, A; Contri, R; Lo Vetere, M; Macri, M; Monge, M; Passaggio, S; Patrignani, C; Robutti, E; Santroni, A; Tosi, S; Chaisanguanthum, K; Morii, M; Marks, J; Schenk, S; Uwer, U; Klose, V; Lacker, H; Bard, D; Dauncey, P; Nash, J; Vazquez, W; Tibbetts, M; Behera, P; Chai, X; Charles, M; Mallik, U; Cochran, J; Crawley, H; Dong, L; Meyer, W; Prell, S; Rosenberg, E; Rubin, A; Gao, Y; Gritsan, A; Guo, Z; Lae, C; Denig, A; Fritsch, M; Schott, G; Arnaud, N; Bequilleux, J; D'Orazio, A; Davier, M; da Costa, J; Grosdidier, G; Hocker, A; Lepeltier, V; Le Diberder, F; Lutz, A; Pruvot, S; Roudeau, P; Schune, M; Serrano, J; Sordini, V; Stocchi, A; Wormser, G; Lange, D; Wright, D; Bingham, I; Burke, J; Chavez, C; Fry, J; Gabathuler, E; Gamet, R; Hutchcroft, D; Payne, D; Touramanis, C; Bevan, A; Clarke, C; George, K; Di Lodovico, F; Sacco, R; Sigamani, M; Cowan, G; Flaecher, H; Hopkins, D; Paramesvaran, S; Salvatore, F; Wren, A; Brown, D; Davis, C; Alwyn, K; Bailey, D; Barlow, R; Chia, Y; Edgar, C; Jackson, G; Lafferty, G; West, T; Yi, J; Anderson, J; Chen, C; Jawahery, A; Roberts, D; Simi, G; Tuggle, J; Dallapiccola, C; Li, X; Salvati, E; Saremi, S; Cowan, R; Dujmic, D; Fisher, P; Koeneke, K; Sciolla, G; Spitznagel, M; Taylor, F; Yamamoto, R; Zhao, M; Patel, P; Robertson, S; Lazzaro, A; Lombardo, V; Palombo, F; Bauer, J; Cremaldi, L; Eschenburg, V; Godang, R; Kroeger, R; Sanders, D; Summers, D; Zhao, H; Simard, M; Taras, P; Viaud, F; Nicholson, H; De Nardo, G; Lista, L; Monorchio, D; Onorato, G; Sciacca, C; Raven, G; Snoek, H; Jessop, C; Knoepfel, K; Losecco, J; Wang, W; Benelli, G; Corwin, L; Honscheid, K; Kagan, H; Kass, R; Morris, J; Rahimi, A; Regensburger, J; Sekula, S; Wong, Q; Blount, N; Brau, J; Frey, R; Igonkina, O; Kolb, J; Lu, M; Rahmat, R; Sinev, N; Strom, D; Strube, J; Torrence, E; Castelli, G; Gagliardi, N; Margoni, M; Morandin, M; Posocco, M; Rotondo, M; Simonetto, F; Stroili, R; Voci, C; Sanchez, P; Ben Haim, E; Briand, H; Calderini, G; Chauveau, J; David, P; Del Buono, L; Hamon, O; Leruste, P; Ocariz, J; Perez, A; Prendki, J; Sitt, S; Gladney, L; Biasini, M; Covarelli, R; Manoni, E; Angelini, C; Batignani, G; Bettarini, S; Carpinelli, M; Cervelli, A; Forti, F; Giorgi, M; Lusiani, A; Marchiori, G; Morganti, M; Neri, N; Paoloni, E; Rizzo, G; Walsh, J; Pegna, D; Lu, C; Olsen, J; Smith, A; Telnov, A; Anulli, F; Baracchini, E; Cavoto, G; del Re, D; Di Marco, E; Faccini, R; Ferrarotto, F; Ferroni, F; Gaspero, M; Jackson, P; Li Gioi, L; Mazzoni, M; Morganti, S; Piredda, G; Polci, F; Renga, F; Voena, C; Ebert, M; Hartmann, T; Schroder, H; Waldi, R; Adye, T; Franek, B; Olaiya, E; Wilson, F; Emery, S; Escalier, M; Esteve, L; Ganzhur, S; de Monchenault, G; Kozanecki, W; Vasseur, G; Yeche, C; Zito, M; Chen, X; Liu, H; Park, W; Purohit, M; White, R; Wilson, J; Allen, M; Aston, D; Bartoldus, R; Bechtle, P; Benitez, J; Cenci, R; Coleman, J; Convery, M; Dingfelder, J; Dorfan, J; Dubois Felsmann, G; Dunwoodie, W; Field, R; Gabareen, A; Gowdy, S; Graham, M; Grenier, P; Hast, C; Innes, W; Kaminski, J; Kelsey, M; Kim, H; Kim, P; Kocian, M; Leith, D; Li, S; Lindquist, B; Luitz, S; Luth, V; Lynch, H; Macfarlane, D; Marsiske, H; Messner, R; Muller, D; Neal, H; Nelson, S; O'Grady, C; Ofte, I; Perazzo, A; Perl, M; Ratcliff, B; Roodman, A; Salnikov, A; Schindler, R; Schwiening, J; Snyder, A; Su, D; Sullivan, M; Suzuki, K; Swain, S; Thompson, J; Va'Vra, J; Wagner, A; Weaver, M; West, C; Wisniewski, W; Wittgen, M; Wright, D; Wulsin, H; Yarritu, A; Yi, K; Young, C; Ziegler, V; Burchat, P; Edwards, A; Majewski, S; Miyashita, T; Petersen, B; Wilden, L; Ahmed, S; Alam, M; Ernst, J; Pan, B; Saeed, M; Zain, S; Spanier, S; Wogsland, B; Eckmann, R; Ritchie, J; Ruland, A; Schilling, C; Schwitters, R; Drummond, B; Izen, J; Lou, X; Bianchi, F; Gamba, D; Pelliccioni, M; Bomben, M; Bosisio, L; Cartaro, C; Della Ricca, G; Lanceri, L; Vitale, L; Azzolini, V; Lopez March, N; Martinez Vidal, F; Milanes, D; Oyanguren, A; Albert, J; Banerjee, S; Bhuyan, B; Choi, H; Hamano, K; Kowalewski, R; Lewczuk, M; Nugent, I; Roney, J; Sobie, R; Gershon, T; Harrison, P; Ilic, J; Latham, T; Mohanty, G; Band, H; Chen, X; Dasu, S; Flood, K; Pan, Y; Pierini, M; Prepost, R; Vuosalo, C; Wu, S
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/389366
Citazioni
  • Scopus 93
  • ???jsp.display-item.citation.isi??? 63
Social impact