We present updated measurements of the branching fractions for B0 meson decays to etaK0, etaeta, etaphi, etaomega, eta'K0, eta'eta', eta'phi, and eta'omega, and branching fractions and CP-violating charge asymmetries for B+ decays to etapi+, etaK+, eta'pi+ and eta'K+. The data represent the full dataset of 467 10^{6} BB pairs collected with the BaBar detector at the PEP-II asymmetric-energy e+e- collider at the SLAC National Accelerator Laboratory. Besides large signals for the four charged B decay modes and for B0\to eta'K0, we find evidence for three B0 decay modes at greater than 3.0sigma significance. We find B(B0\to etaK0) = (1.15^{+0.43}_{-0.38} \pm0.09)x10^{-6}, B(B0\to etaomega) = (0.94^{+0.35}_{-0.30}\pm0.09)x10^{-6}, and B(B0\to eta'omega) = (1.01^{+0.46}_{-0.38}\pm0.09)x10^{-6}, where the first (second) uncertainty is statistical (systematic). For the B+\to etaK+ decay mode, we measure the charge asymmetry A_{ch}(B+\to etaK+) = -0.36 \pm 0.11 \pm 0.03.
B meson decays to charmless meson pairs containing eta or eta' mesons / B. Aubert, R. Barate, D. Boutigny, F. Couderc, Y. Karyotakis, J.P. Lees, V. Poireau, V. Tisserand, A. Zghiche, E. Grauges, A. Palano, M. Pappagallo, A. Pompili, J.C. Chen, N.D. Qi, G. Rong, P. Wang, Y.S. Zhu, G. Eigen, I. Ofte, B. Stugu, G.S. Abrams, M. Battaglia, A.B. Breon, D.N. Brown, J. Button Shafer, R.N. Cahn, M.S. Gill, A.V. Gritsan, Y. Groysman, R.G. Jacobsen, J. Kadyk, L.T. Kerth, Y.U.G. Kolomensky, G. Kukartsev, G. Lynch, L.M. Mir, P.J. Oddone, T.J. Orimoto, N.A. Roe, M.T. Ronan, W.A. Wenzel, M. Barrett, K.E. Ford, T.J. Harrison, A.J. Hart, C.M. Hawkes, B. Lewandowski, M. Pelizaeus, K. Peters, T. Schroeder, T. Cuhadar Donszelmann, B.G. Fulsom, C. Hearty, N.S. Knecht, T.S. Mattison, J.A. Mckenna, A. Khan, P. Kyberd, M. Saleem, L. Teodorescu, A.E. Blinov, V.E. Blinov, A.D. Bukin, V.P. Druzhinin, V.B. Golubev, E.A. Kravchenko, A.P. Onuchin, S.I. Serednyakov, Y.U.I. Skovpen, E.P. Solodov, D. Best, M. Bondioli, M. Bruinsma, M. Chao, I. Eschrich, D. Kirkby, A.J. Lankford, M. Mandelkern, B.L. Hartfiel, S.D. Foulkes, J.W. Gary, O. Long, B.C. Shen, K. Wang, L. Zhang, D. del Re, H.K. Hadavand, E.J. Hill, D.B. Macfarlane, H.P. Paar, J.W. Berryhill, C. Campagnari, A. Cunha, M.A. Mazur, J.D. Richman, W. Verkerke, T.W. Beck, A.M. Eisner, C.J. Flacco, C.A. Heusch, J. Kroseberg, W.S. Lockman, G. Nesom, T. Schalk, B.A. Schumm, A. Seiden, P. Spradlin, D.C. Williams, M.G. Wilson, J. Albert, G.P. Dubois Felsmann, A. Dvoretskii, D.G. Hitlin, I. Narsky, T. Piatenko, F.C. Porter, A. Ryd, A. Samuel, R. Andreassen, S. Jayatilleke, G. Mancinelli, B.T. Meadows, M.D. Sokoloff, F. Blanc, P. Bloom, S. Chen, W.T. Ford, U. Nauenberg, A. Olivas, P. Rankin, W.O. Ruddick, J.G. Smith, K.A. Ulmer, S.R. Wagner, J. Zhang, A. Chen, E.A. Eckhart, A. Soffer, W.H. Toki, R.J. Wilson, Q. Zeng, D. Altenburg, E. Feltresi, A. Hauke, B. Spaan, T. Brandt, J. Brose, H.M. Lacker, R. Nogowski, S. Otto, A. Petzold, G. Schott, J. Schubert, K.R. Schubert, R. Schwierz, J.E. Sundermann, D. Bernard, G.R. Bonneaud, C.H. Thiebaux, G. Vasileiadis, M. Verderi, D.J. Bard, P.J. Clark, W. Gradl, F. Muheim, S. Playfer, Y. Xie, M. Andreotti, V. Azzolini, D. Bettoni, C. Bozzi, R. Calabrese, G. Cibinetto, E. Luppi, M. Negrini, L. Piemontese, F. Anulli, R. Baldini Ferroli, A. Calcaterra, R. de Sangro, G. Finocchiaro, P. Patteri, I.M. Peruzzi, M. Piccolo, A. Zallo, A. Buzzo, R. Capra, R. Contri, M. Lo Vetere, M. Macri, M.R. Monge, S. Passaggio, C. Patrignani, E. Robutti, A. Santroni, S. Tosi, S. Bailey, E. Won, J. Wu, R.S. Dubitzky, U. Langenegger, J. Marks, S. Schenk, U. Uwer, W. Bhimji, D.A. Bowerman, P.D. Dauncey, U. Egede, R.L. Flack, J.R. Gaillard, G.W. Morton, J.A. Nash, M.B. Nikolich, G.P. Taylor, W.P. Vazquez, M.J. Charles, W.F. Mader, U. Mallik, A.K. Mohapatra, J. Cochran, H.B. Crawley, V. Eyges, W.T. Meyer, S. Prell, E.I. Rosenberg, A.E. Rubin, J. Yi, N. Arnaud, M. Davier, X. Giroux, G. Grosdidier, A. H¨ocker, F. Le Diberder, V. Lepeltier, A.M. Lutz, A. Oyanguren, T.C. Petersen, M. Pierini, S. Plaszczynski, S. Rodier, P. Roudeau, M.H. Schune, A. Stocchi, G. Wormser, C.H. Cheng, D.J. Lange, M.C. Simani, D.M. Wright, A.J. Bevan, C.A. Chavez, J.P. Coleman, I.J. Forster, J.R. Fry, E. Gabathuler, R. Gamet, K.A. George, D.E. Hutchcroft, R.J. Parry, D.J. Payne, K.C. Schofield, C. Touramanis, C.M. Cormack, F. Di Lodovico, R. Sacco, C.L. Brown, G. Cowan, H.U. Flaecher, M.G. Green, D.A. Hopkins, P.S. Jackson, T.R. Mcmahon, S. Ricciardi, F. Salvatore, D. Brown, C.L. Davis, J. Allison, N.R. Barlow, R.J. Barlow, M.C. Hodgkinson, G.D. Lafferty, C. Chen, A. Farbin, W.D. Hulsbergen, A. Jawahery, D. Kovalskyi, C.K. Lae, V. Lillard, D.A. Roberts, G. Simi, G. Blaylock, C. Dallapiccola, S.S. Hertzbach, R. Kofler, V.B. Koptchev, X. Li, T.B. Moore, S. Saremi, H. Staengle, S. Willocq, R. Cowan, K. Koeneke, G. Sciolla, S.J. Sekula, M. Spitznagel, F. Taylor, R.K. Yamamoto, H. Kim, P.M. Patel, S.H. Robertson, P. Biassoni, A. Lazzaro, V. Lombardo, F. Palombo, S. Stracka, J.M. Bauer, L. Cremaldi, V. Eschenburg, D.A. Sanders, D.J. Summers, H.W. Zhao, S. Brunet, D. Cot´e, P. Taras, B. Viaud, H. Nicholson, N. Cavallo, G. De Nardo, F. Fabozzi, C. Gatto, L. Lista, D. Monorchio, P. Paolucci, D. Piccolo, C. Sciacca, M. Baak, H. Bulten, G. Raven, H.L. Snoek, L. Wilden, C.P. Jessop, K.K. Gan, K. Honscheid, D. Hufnagel, P.D. Jackson, H. Kagan, R. Kass, T. Pulliam, A.M. Rahimi, R. Frey, O. Igonkina, M. Lu, J. Strube, E. Torrence, A. Dorigo, F. Galeazzi, M. Margoni, M. Morandin, M. Posocco, M. Rotondo, F. Simonetto, R. Stroili, C. Voci, H. Briand, J. Chauveau, P. David, L. Del Buono, C.H. de la Vaissi`ere, O. Hamon, M.J.J. John, P.H. Leruste, J. Malcl`es, J. Ocariz, L. Roos, G. Therin, P.K. Behera, L. Gladney, Q.H. Guo, J. Panetta, M. Biasini, C. Angelini, G. Batignani, S. Bettarini, F. Bucci, G. Calderini, M. Carpinelli, R. Cenci, F. Forti, M.A. Giorgi, A. Lusiani, G. Marchiori, M. Morganti, N. Neri, E. Paoloni, M. Rama, G. Rizzo, J. Walsh, M. Haire, D. Judd, N. Danielson, P. Elmer, Y.P. Lau, C. Lu, J. Olsen, A.J.S. Smith, A.V. Telnov, F. Bellini, G. Cavoto, A. D’Orazio, E. Di Marco, R. Faccini, F. Ferrarotto, F. Ferroni, M. Gaspero, L. Li Gioi, M.A. Mazzoni, S. Morganti, G. Piredda, F. Polci, F. Safai Tehrani, C. Voena, H. Schr¨oder, G. Wagner, R. Waldi, T. Adye, N. De Groot, B. Franek, G.P. Gopal, E.O. Olaiya, S. Emery, A. Gaidot, S.F. Ganzhur, P.F. Giraud, G. Graziani, G. Hamel de Monchenault, W. Kozanecki, M. Legendre, G.W. London, B. Mayer, G. Vasseur, C.H. Y`eche, M. Zito, M.V. Purohit, A.W. Weidemann, J.R. Wilson, F.X. Yumiceva, T. Abe, M.T. Allen, D. Aston, R. Bartoldus, N. Berger, A.M. Boyarski, O.L. Buchmueller, R. Claus, M.R. Convery, M. Cristinziani, J.C. Dingfelder, D. Dong, J. Dorfan, D. Dujmic, W. Dunwoodie, S.J. Gowdy, T. Hadig, V. Halyo, C. Hast, T. Hryn’ova, W.R. Innes, P. Kim, D.W.G.S. Leith, J. Libby, S. Luitz, V. Luth, H.L. Lynch, H. Marsiske, R. Messner, D.R. Muller, C.P. O’Grady, V.E. Ozcan, A. Perazzo, M. Perl, B.N. Ratcliff, A. Roodman, A.A. Salnikov, J. Schwiening, A. Snyder, J. Stelzer, D. Su, M.K. Sullivan, K. Suzuki, S. Swain, J.M. Thompson, J. Va’vra, M. Weaver, A.J.R. Weinstein, W.J. Wisniewski, M. Wittgen, D.H. Wright, A.K. Yarritu, K. Yi, C.C. Young, P.R. Burchat, A.J. Edwards, B.A. Petersen, C. Roat, M. Ahmed, M.A. Saeed, M. Krishnamurthy, S.M. Spanier, R. Eck, J.L. Ritchie, A. Satpathy, R.F. Schwitters, J.M. Izen, I. Kitayama, X.C. Lou, S. Ye, F. Bianchi, M. Bona, F. Gallo, D. Gamba, M. Bomben, L. Bosisio, C. Cartaro, F. Cossutti, G. Della Ricca, S. Dittongo, S. Grancagnolo, L. Lanceri, L. Vitale, F. Martinez Vidal, R.S. Panvini, S.W. Banerjee, K. Hamano, R. Kowalewski, J.M. Roney, P.F. Harrison, T.E. Latham, G.B. Mohanty, M. Datta, A.M. Eichenbaum, K.T.F.M. Graham, A. Mihalyi, P. Tan, J.H. von Wimmersperg Toeller, S.L. Wu, Z. Yu, H. Neal. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 80:11(2009), pp. 112002.112002.1-112002.112002.11. [10.1103/PhysRevD.80.112002]
B meson decays to charmless meson pairs containing eta or eta' mesons
P. Biassoni;A. Lazzaro;F. Palombo;S. Stracka;N. Neri;
2009
Abstract
We present updated measurements of the branching fractions for B0 meson decays to etaK0, etaeta, etaphi, etaomega, eta'K0, eta'eta', eta'phi, and eta'omega, and branching fractions and CP-violating charge asymmetries for B+ decays to etapi+, etaK+, eta'pi+ and eta'K+. The data represent the full dataset of 467 10^{6} BB pairs collected with the BaBar detector at the PEP-II asymmetric-energy e+e- collider at the SLAC National Accelerator Laboratory. Besides large signals for the four charged B decay modes and for B0\to eta'K0, we find evidence for three B0 decay modes at greater than 3.0sigma significance. We find B(B0\to etaK0) = (1.15^{+0.43}_{-0.38} \pm0.09)x10^{-6}, B(B0\to etaomega) = (0.94^{+0.35}_{-0.30}\pm0.09)x10^{-6}, and B(B0\to eta'omega) = (1.01^{+0.46}_{-0.38}\pm0.09)x10^{-6}, where the first (second) uncertainty is statistical (systematic). For the B+\to etaK+ decay mode, we measure the charge asymmetry A_{ch}(B+\to etaK+) = -0.36 \pm 0.11 \pm 0.03.Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.