A measurement of the semileptonic branching ratio BR(b-baryon -> pl(v)over-bar-X) and a study of inclusive pi(+/-), K-+/-, (p,(p)over-bar) production in Z decays

Barate, R; Buskulic, D; Decamp, D; Ghez, P; Goy, C; Lees, Jp; Lucotte, A; Minard, Mn; Nief, Jy; Pietrzyk, B; Boix, G; Casado, Mp; Chmeissani, M; Crespo, Jm; Delfino, M; Fernandez, E; Fernandez Bosman, M; Garrido, L; Grauges, E; Juste, A; Martinez, M; Merino, G; Miquel, R; Mir, Lm; Park, Ic; Pascual, A; Perlas, Ja; Riu, I; Sanchez, F; Colaleo, A; Creanza, Donato Maria; De Palma, M; Gelae, G; Iaselli, Giuseppe; Maggi, Giorgio Pietro; Maggi, R; Marinelli, N; Nuzzo, S; Ranieri, A; Raso, G; Ruggieri, F; Selvaggi, G; Silvestris, L; Tempesta, P; Tricomi, A; Zito, G; Huang, X; Lin, J; Ouyang, Q; Wang, T; Xie, Y; R, Xu; Xue, S; Zhang, J; Zhang, L; Zhao, W; Abbaneo, D; Alemany, R; Becker, U; Bright Thomas, P; Casper, D; Cattaneo, M; Cerutti, F; Ciulli, V; Dissertori, G; Drevermann, H; Forty, Rw; Frank, M; Hagelberg, R; Hansen, Jb; Harvey, J; Janot, P; Jost, B; Lehraus, I; Mato, P; Minten, A; Moneta, L; Pacheco, A; Pusztaszeri, Jf; Ranjard, F; Rolandi, L; Rousseau, D; Schlatter, D; Schmitt, M; Schneider, O; Tejessy, W; Teubert, F; Tomalin, Ir; Wachsmuth, H; Wagner, A; Ajaltouni, Z; Badaud, F; Chazelle, G; Deschamps, O; Falvard, A; Ferdi, C; Gay, P; Guicheney, C; Henrard, P; Jousset, J; Michel, B; Monteil, S; Montret, Jc; Pallin, D; Perret, P; Podlyski, F; Proriol, J; Rosnet, P; Fearnley, T; Hansen, Jd; Hansen, Jr; Hansen, Ph; Nilsson, Bs; Rensch, B; Waananen, A; Daskalakis, G; Kyriakis, A; Markou, C; Simopoulou, E; Siotis, I; Vayaki, A; Blondel, A; Bonneaud, G; Brient, Jc; Bourdon, P; Rouge, A; Rumpf, M; Valassi, A; Verderi, M; Videau, H; Candlin, Dj; Parsons, Mi; Boccali, T; Focardi, E; Parrini, G; Zachariadou, K; Corden, M; Georgiopoulos, C; Jaffe, De; Antonelli, A; Bencivenni, G; Bologna, G; Bossi, F; Campana, P; Capon, G; Chiarella, V; Felici, G; Laurelli, P; Mannocchi, G; Murtas, F; Murtas, Gp; Passalacqua, L; Pepe Altarelli, M; Curtis, L; Dorris, Sj; Halley, Aw; Lynch, Jg; Negus, P; O'Shea, V; Raine, C; Scarr, Jm; Smith, K; Teixeira Dias, P; Thompson, As; Thomson, E; Thomson, F; Buchmuller, O; Dhamotharan, S; Geweniger, C; Graefe, G; Hanke, P; Hansper, G; Hepp, V; Kluge, Ee; Putzer, A; Sommer, J; Tittel, K; Werner, S; Wunsch, M; Beuselinck, R; Binnie, Dm; Cameron, W; Dornan, Pj; Girone, M; Goodsir, S; Martin, Eb; Moutoussi, A; Nash, J; Sedgbeer, Jk; Spagnolo, P; Williams, Md; Ghete, Vm; Girtler, P; Kneringer, E; Kuhn, D; Rudolph, G; Betteridge, Ap; Bowdery, Ck; Buck, Pg; Colrain, P; Crawford, G; Finch, Aj; Foster, F; Hughes, G; Rwl, Jones; Williams, Mi; Giehl, I; Greene, Am; Hoffmann, C; Jakobs, K; Kleinknecht, K; Quast, G; Renk, B; Rohne, E; Sander, Hg; Van Gemmeren, P; Zeitnitz, C; Aubert, Jj; Benchouk, C; Bonissent, A; Bujosa, G; Carr, J; Coyle, P; Diaconu, C; Etienne, F; Leroy, O; Motsch, F; Payre, P; Talby, M; Sadouki, A; Thulasidas, N; Trabelsi, K; Aleppo, M; Antonelli, M; Ragusa, F; Berlich, R; Blum, W; Buscher, V; Dietl, H; Ganis, G; Gotzhein, C; Kroha, H; Lutjens, G; Lutz, G; Mannert, C; Manner, W; Moser, Hg; Richter, R; Rosado Schlosser, A; Schael, S; Settles, R; Seywerd, H; Stenzel, H; Wiedenmann, W; Wolf, G; Boucrot, J; Callot, O; Chen, S; Choi, Y; Cordier, A; Davier, H; Duflot, L; Grivaz, Jf; Heusse, P; Hocker, A; Jacholkowska, A; Kim, Dw; Le Diberder, F; Lefrancois, J; Lutz, Am; Nikolic, I; Schune, Mh; Tournefier, E; Veillet, Jj; Videau, I; Zerwas, D; Azzurri, P; Bagliesi, G; Batignani, G; Bettarini, S; Bozzi, C; Calderini, G; Carpinelli, M; Ciocci, Ma; Dell'Orso, R; Fantechi, R; Ferrante, I; Foa, L; Forti, F; Giassi, A; Giorgi, Ma; Gregorio, A; Ligabue, F; Lusiani, A; Marrocchesi, Ps; Messineo, A; Palla, F; Rizzo, G; Sanguinetti, G; Sciaba, A; Steinberger, J; Tenchini, R; Tonelli, G; Vannini, C; Venturi, A; Verdini, Pg; Blair, Ga; Bryant, Lm; Chambers, Jt; Green, Mg; Medcalf, T; Perrodo, P; Strong, Ja; Von Wimmersperg Toeller Jh,; Botterill, Dr; Clifft, Rw; Edgecock, Tr; Haywood, S; Norton, Pr; Thompson, Jc; Wright, Ae; Bloch Devaux, B; Colas, P; Emery, S; Kozanecki, W; Lancon, E; Lemaire, Mc; Locci, E; Perez, P; Rander, J; Renardy, Jf; Roussarie, A; Schuller, Jp; Schwindling, J; Trabelsi, A; Vallage, B; Black, Sn; Dann, Jh; Johnson, Rp; Kim, Hy; Konstantinidis, N; Litke, Am; Mcneil, Ma; Taylor, G; Booth, Cn; Caj, Brew; Cartwright, S; Combley, F; Kelly, Ms; Lehto, M; Reeve, J; Thompson, Lf; Affholderbach, K; Bohrer, A; Brandt, S; Cowan, G; Grupen, C; Saraiva, P; Smolik, L; Stephan, F; Apollonio, M; Bosisio, L; Della Marina, R; Giannini, G; Gobbo, B; Musolino, G; Rothberg, J; Wasserbaech, S; Armstrong, Sr; Charles, E; Elmer, P; Dps, Ferguson; Gao, Y; Gonzalez, S; Greening, Tc; Hayes, Oj; H, Hu; Jin, S; Mcnamara, Pa; Nachtman, Jm; Nielsen, J; Orejudos, W; Pan, Yb; Saadi, Y; Scott, Ij; Walsh, J; Sl, Wu; X, Wu; Yamartino, Jm; Zobernig, G.

doi:10.1007/s100529800975

Inclusive pi(+/-), K+/- and (p,(p)over-bar) production is investigated using data recorded by the ALEPH detector between 1992 and 1994. The momentum spectra and multiplicities are measured separately in Z --> b(b)over-bar, Z --> c(c)over-bar and Z --> u(u)over-bar, d(d)over-bar; s(s)over-bar decays. The number of protons found in b-hadron decays is used to estimate the fraction of b-baryons in b events to be (10.2 +/- 0.7 +/- 2.7)% assuming BR(b-baryon --> pX) = (58 +/- 6)%. From an additional study of proton-lepton correlations in b events, the branching ratio BR(b-baryon --> pl(v)over-bar-X) = (4.63 +/- 0.72 +/- 0.98)% is obtained. The ratio BR(b-baryon --> pl(nu)over-bar-X)/BR(b-baryon --> pX) is found to be 0.080 +/- 0.012 +/- 0.014.

A measurement of the semileptonic branching ratio BR(b-baryon -> pl(v)over-bar-X) and a study of inclusive pi(+/-), K-+/-, (p,(p)over-bar) production in Z decays / Barate, R., Buskulic, D., Decamp, D., Ghez, P., Goy, C., Lees, J.p., Lucotte, A., Minard, M.n., Nief, J.y., Pietrzyk, B., Boix, G., Casado, M.p., Chmeissani, M., Crespo, J.m., Delfino, M., Fernandez, E., Fernandez Bosman, M., Garrido, L., Grauges, E., Juste, A., et al.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - STAMPA. - 5:2(1998), pp. 205-227. [10.1007/s100529800975]