Measurements of B(B̄0→Λc+p̄) and B(B- →Λc+p̄π-) and studies of Λc+π- resonances

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; Kukartsev, G; Lynch, G; Osipenkov, I; Ronan, M; Tackmann, K; Tanabe, T; Hawkes, C; Soni, N; Watson, A; Koch, H; Schroeder, T; Walker, D; Asgeirsson, D; Cuhadar Donszelmann, T; Fulsom, B; Hearty, C; Mattison, T; Mckenna, J; Barrett, M; Khan, A; Teodorescu, L; 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; Blanc, F; Bloom, P; Ford, W; Gaz, A; Hirschauer, J; Kreisel, A; 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; Dubitzky, R; 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; Fermino 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; 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; Barlow, N; Barlow, R; Chia, Y; Edgar, C; Lafferty, G; West, T; Yi, J; Anderson, J; Chen, C; Jawahery, A; Roberts, D; Simi, G; Tuggle, J; Dallapiccola, C; Hertzbach, S; Li, X; Salvati, E; Saremi, S; Cowan, R; Dujmic, D; Fisher, P; Koeneke, K; Sciolla, G; Spitznagel, M; Taylor, F; Yamamoto, R; Zhao, M; Mclachlin, S; 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; Baak, M; 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; 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; Biesiada, J; Lopes 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; Roethel, W; Wilson, F; Emery, S; Escalier, M; Esteve, L; Gaidot, A; Ganzhur, S; Hamel 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 GP,; 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; Bula, R; 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

doi:10.1103/PhysRevD.78.112003

We present an investigation of the decays B̄0→Λc+p̄ and B-→Λc+p̄π- based on 383×106 Υ(4S) →BB̄ decays recorded with the BABAR detector. We measure the branching fractions of these decays; their ratio is B(B-→Λc+p̄π-)/ B(B̄0→Λc+p̄)=15.4±1.8±0.3. The B-→Λc+p̄π- process exhibits an enhancement at the Λc+p̄ threshold and is a laboratory for searches for excited charm baryon states. We observe the resonant decays B-→Σc(2455)0p̄ and B-→Σc(2800)0p̄ but see no evidence for B-→Σc(2520) 0p̄. This is the first observation of the decay B-→Σc(2800) 0p̄; however, the mass of the observed excited Σc0 state is (2846±8±10)MeV/c2, which is somewhat inconsistent with previous measurements. Finally, we examine the angular distribution of the B-→Σc(2455)0p̄ decays and measure the spin of the Σc(2455)0 baryon to be 1/2, as predicted by the quark model.

Aubert, B., Bona, M., Karyotakis, Y., Lees, J., Poireau, V., Prencipe, E., et al. (2008). Measurements of B(B̄0→Λc+p̄) and B(B- →Λc+p̄π-) and studies of Λc+π- resonances. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 78(11) [10.1103/PhysRevD.78.112003].