We study the decays B0 to J/psi pi+pi- and B+ to J/psi pi+pi0, including intermediate resonances, using a sample of 382 million BBbar pairs recorded by the BaBar detector at the PEP-II e+e- B factory. We measure the branching fractions B(B0 ->J/psi rho0) = (2.7 +/- 0.3 +/- 0.17) x 10-5 and B(B+ ->J/psi rho+) = (5.0 +/- 0.7 +/-0.31) x 10-5. We also set the following upper limits at the 90% confidence level: B(B0 -> J/psi pi+ \pi- non-resonant) < 1.2 x 10-5, B(B0 -> J/psi f_2(1270)) < 4.6 x 10-6, and B(B+ -> J/psi pi+ pi0 non-resonant) < 4.4 x 10-6. We measure the charge asymmetry in charged B decays to J/psi rho to be -0.11 +/- 0.12 +/- 0.08
Branching fraction and charge asymmetry measurements in B -> J/psi pi pi decays / 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, E. Charles, C.T. Day, 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, M. Pripstein, N.A. Roe, M.T. Ronan, W.A. Wenzel, M. Barrett, K.E. Ford, T.J. Harrison, A.J. Hart, C.M. Hawkes, S.E. Morgan, A.T. Watson, M. Fritsch, K. Goetzen, H. Koch, B. Lewandowski, M. Pelizaeus, K. Peters, T. Schroeder, M. Steinke, J.T. Boyd, J.P. Burke, N. Chevalier, W.N. Cottingham, M.P. Kelly, 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, R.K. Mommsen, W. Roethel, D.P. Stoker, C. Buchanan, 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, S. Rahatlou, V. Sharma, J.W. Berryhill, C. Campagnari, A. Cunha, B. Dahmes, T.M. Hong, 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, M. Dickopp, V. Klose, 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, P. Grenier, S. Schrenk, 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, G. Brandenburg, K.S. Chaisanguanthum, M. Morii, 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, M.T. Naisbit, J.C. Williams, 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, A. Lazzaro, V. Lombardo, F. Palombo, J.M. Bauer, L. Cremaldi, V. Eschenburg, R. Godang, R. Kroeger, J. Reidy, 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, J.M. Losecco, T. Allmendinger, G. Benelli, K.K. Gan, K. Honscheid, D. Hufnagel, P.D. Jackson, H. Kagan, R. Kass, T. Pulliam, A.M. Rahimi, R. Ter Antonyan, Q.K. Wong, J. Brau, R. Frey, O. Igonkina, M. Lu, C.T. Potter, N.B. Sinev, D. Strom, J. Strube, E. Torrence, A. Dorigo, F. Galeazzi, M. Margoni, M. Morandin, M. Posocco, M. Rotondo, F. Simonetto, R. Stroili, C. Voci, M. Benayoun, 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, R. Covarelli, S. Pacetti, M. Pioppi, 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, D.E. Wagoner, J. Biesiada, 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, F.F. Wilson, R. Aleksan, 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. Fan, R.C. Field, T. Glanzman, S.J. Gowdy, T. Hadig, V. Halyo, C. Hast, T. Hryn’ova, W.R. Innes, M.H. Kelsey, 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, S.A. Majewski, B.A. Petersen, C. Roat, M. Ahmed, S. Ahmed, M.S. Alam, J.A. Ernst, M.A. Saeed, F.R. Wappler, S.B. Zain, W. Bugg, 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, B. Bhuyan, C.M. Brown, D. Fortin, K. Hamano, R. Kowalewski, J.M. Roney, R.J. Sobie, J.J. Back, P.F. Harrison, T.E. Latham, G.B. Mohanty, H.R. Band, X. Chen, B. Cheng, M. Datta, A.M. Eichenbaum, K.T.F.M. Graham, J.J. Hollar, J.R. Johnson, P.E. Kutter, H. Li, R. Liu, B. Mellado, A. Mihalyi, Y. Pan, R. Prepost, 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. - 76:3(2007), pp. 031101.031101.1-031101.031101.9. [10.1103/PhysRevD.76.031101]
Branching fraction and charge asymmetry measurements in B -> J/psi pi pi decays
A. Lazzaro;F. Palombo;N. Neri;
2007
Abstract
We study the decays B0 to J/psi pi+pi- and B+ to J/psi pi+pi0, including intermediate resonances, using a sample of 382 million BBbar pairs recorded by the BaBar detector at the PEP-II e+e- B factory. We measure the branching fractions B(B0 ->J/psi rho0) = (2.7 +/- 0.3 +/- 0.17) x 10-5 and B(B+ ->J/psi rho+) = (5.0 +/- 0.7 +/-0.31) x 10-5. We also set the following upper limits at the 90% confidence level: B(B0 -> J/psi pi+ \pi- non-resonant) < 1.2 x 10-5, B(B0 -> J/psi f_2(1270)) < 4.6 x 10-6, and B(B+ -> J/psi pi+ pi0 non-resonant) < 4.4 x 10-6. We measure the charge asymmetry in charged B decays to J/psi rho to be -0.11 +/- 0.12 +/- 0.08Pubblicazioni consigliate
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