The lifetimes of the B-0 and B+ mesons have been measured with the ALEPH detector at LEP, using approximately 3 million hadronic Z decays collected in the period 1991-1994. In the first of three methods, semileptonic decays of B-0 and B+ mesons were partially reconstructed by identifying events containing a lepton with an associated D*(-) or (D) over bar(0) meson. The second method used fully reconstructed B-0 and B+ mesons. The third method, used to measure the B-0 lifetime, employed a partial reconstruction technique to identify B-0 --> D*(-)pi(+)X decays. The combined results are tau(0) = 1.55 +/- 0.06 +/- 0.03 ps, tau(+) = 1.58 +/- 0.09 +/- 0.03 ps, tau(+)/tau(0) = 1.03 +/- 0.08 +/- 0.02.
Improved measurement of theB 0 andB + meson lifetimes / Buskulic, D; Debonis, I; Decamp, D; Ghez, P; Coy, C; Lees, Jp; Lucotte, A; Minard, Mn; Odier, P; Pietrzyk, B; Casado, Mp; Chmeissani, M; Crespo, Jm; Delfino, M; Efthymiopoulos, I; Fernandez, E; Fernandezbosman, M; Garrido, L; Juste, A; Martinez, M; Orteu, S; Pacheco, A; Padilla, C; Pascual, A; Perlas, Ja; Riu, I; Sanchez, F; Teubert, F; Colaleo, A; Creanza, D; Depalma, M; Gelao, G; Girone, M; Iaselli, G; Maggi, G; Maggi, M; Marinelli, N; Nuzzo, S; Ranieri, A; Raso, G; Ruggieri, F; Selvaggi, G; Silvestris, L; Tempesta, P; Zito, G; Huang, X; Lin, J; Ouyang, Q; Wang, T; Xie, Y; Xu, R; Xue, S; Zhang, J; Zhang, L; Zhao, W; Alemany, R; Bazarko, Ao; Bonvicini, G; Cattaneo, M; Comas, P; Coyle, P; Drevermann, H; Forty, Rw; Frank, M; Hagelberg, R; Harvey, J; Janot, P; Jost, B; Kneringer, E; Knobloch, J; Lehraus, I; Martin, Eb; Mato, P; Minten, A; Miquel, R; Mir, Lm; Moneta, L; Oest, T; Palla, F; Pater, Jr; Pusztaszeri, Jf; Ranjard, F; Rensing, P; Rolandi, L; Schlatter, D; Schmelling, M; Schneider, O; Tejessy, W; Tomalin, Ir; Venturi, A; Wachsmuth, H; Wagner, A; Wildish, T; Ajaltouni, Z; Barres, A; Boyer, C; Falvard, A; Gay, P; Guicheney, C; Henrard, P; Jousset, J; Michel, B; Monteil, S; Montret, Jc; Pallin, D; Perret, P; Podlyski, F; Proriol, J; Rossignol, Jm; Fearnley, T; Hansen, Jb; Hansen, Jd; Hansen, Jr; Hansen, Ph; Nilsson, Bs; Waananen, A; Kyriakis, A; Markou, C; Simopoulou, E; Siotis, I; Vayaki, A; Zachariadou, K; Blondel, A; Bonneaud, G; Brient, Jc; Bourdon, P; Rouge, A; Rumpf, M; Valassi, A; Verderi, M; Videau, H; Candlin, Dj; Parsons, Mi; Focardi, E; Parrini, G; Corden, M; Georgiopoulos, C; Jaffe, De; Antonelli, A; Bencivenni, G; Bologna, G; Bossi, F; Campana, P; Capon, G; Gasper, D; Chiarella, V; Felici, G; Laurelli, P; Mannocchi, G; Murtas, F; Murtas, Gp; Passalacqua, L; Pepealtarelli, M; Curtis, L; Dorris, Sj; Halley, Aw; Knowles, Ig; Lynch, Jg; Oshea, V; Raine, C; Reeves, P; Scarr, Jm; Smith, K; Thompson, As; Thomson, F; Thorn, S; Turnbull, Rm; Becker, U; Geweniger, C; Graefe, G; Hanke, P; Hansper, G; Hepp, V; Kluge, Ee; Putzer, A; Rensch, B; Schmidt, M; Sommer, J; Stenzel, H; Tittel, K; Werner, S; Wunsch, M; Abbaneo, D; Beuselinck, R; Binnie, Dm; Cameron, W; Dornan, Pj; Moutoussi, A; Nash, J; Sedgbeer, Jk; Stacey, Am; Williams, Md; Dissertori, G; Girtler, P; Kuhn, D; Rudolph, G; Betteridge, Ap; Bowdery, Ck; Colrain, P; Crawford, G; Finch, Aj; Foster, F; Hughes, G; Sloan, T; Williams, Mi; Galla, A; Greene, Am; Kleinknecht, K; Quast, G; Renk, B; Rohne, E; Sander, Hg; Zeitnitz, Pvgc; Aubert, Jj; Bencheikh, Am; Benchouk, C; Bonissent, A; Bujosa, G; Calvet, D; Carr, J; Diaconu, C; Etienne, F; Konstantinidis, N; Payre, P; Rousseau, D; Talby, M; Sadouki, A; Thulasidas, M; Trabelsi, K; Aleppo, M; Ragusa, F; Abt, I; Assmann, R; Bauer, C; Blum, W; Dietl, H; Dydak, F; Ganis, G; Gotzhein, C; Jakobs, K; Kroha, H; Lutjens, G; Lutz, G; Manner, W; Moser, Hg; Richter, R; Rosadoschlosser, A; Schael, S; Settles, R; Seywerd, H; Stdenis, R; Wiedenmann, W; Wolf, G; Boucrot, J; Callot, O; Cordier, A; Davier, M; Duflot, L; Grivaz, Jf; Heusse, P; Jacquet, M; Kim, Dw; Lediberder, F; Lefranois, J; Lutz, Am; Nikolic, I; Park, Hj; Park, Ic; Schune, Mh; Simion, S; Veillet, Jj; Videau, I; Azzurri, P; Bagliesi, G; Batignani, G; Bettarini, S; Bozzi, C; Calderini, G; Carpinelli, M; Ciocci, Ma; Ciulli, V; Dellorso, R; Fantechi, R; Ferrante, I; Foa, L; Forti, F; Giassi, A; Giorgi, Ma; Gregorio, A; Ligabue, F; Lusiani, A; Marrocchesi, Ps; Messineo, A; Rizzo, G; Sanguinetti, G; Sciaba, A; Spagnolo, P; Steinberger, J; Tenchini, R; Tonelli, G; Vannini, C; Verdini, Pg; Walsh, J; Blair, Ga; Bryant, Lm; Cerutti, F; Chambers, Jt; Gao, Y; Green, Mg; Medcalf, T; Perrodo, P; Strong, Ja; Vonwimmerspergtoeller, Jh; Botterill, Dr; Clifft, Rw; Edgecock, Tr; Haywood, S; Maley, P; Norton, Pr; Thompson, Jc; Wright, Ae; Blochdevaux, B; Colas, P; Emery, S; Kozanecki, W; Lancon, E; Lemaire, Mc; Locci, E; Marx, B; Perez, P; Rander, J; Renardy, Jf; Roussarie, A; Schuller, Jp; Schwindling, J; Trabelsi, A; Vallage, B; Black, Sn; Dann, Jh; Johnson, Rp; Kim, Hy; Litke, Am; Mcneil, Ma; Taylor, G; Booth, Cn; Boswell, R; Brew, Caj; Cartwright, S; Combley, F; Koksal, A; Letho, M; Newton, Wm; Reeve, J; Thompson, Lf; Bohrer, A; Brandt, S; Buscher, V; Cowan, G; Grupen, C; Lutters, G; Minguetrodriguez, J; Rivera, F; Saraiva, P; Smolik, L; Stephan, F; Apollonio, M; Bosisio, L; Dellamarina, R; Giannini, G; Gobbo, B; Musolino, G; Rothberg, J; Wasserbaech, S; Armstrong, Sr; Bellantoni, L; Elmer, P; Feng, Z; Ferguson, Dps; Gao, Ys; Gonzales, S; Grahl, J; Greening, Tc; Harton, Jl; Hayes, Oj; H, Hu; Mcnamara, Pa; Nachtman, Jm; Orejudos, W; Pan, Yb; Saadi, Y; Schmitt, M; Scott, Ij; Sharma, V; Walsh, Am; Wu, Sl; Wu, X; Yamartino, Jm; Zheng, M; Zobernig, G. - In: ZEITSCHRIFT FÜR PHYSIK. C, PARTICLES AND FIELDS. - ISSN 0170-9739. - STAMPA. - 71:1(1996), pp. 31-44. [10.1007/s002880050145]
Improved measurement of theB 0 andB + meson lifetimes
Buskulic D; DeBonis I; Decamp D; Ghez P; Coy C; Lees JP; Lucotte A; Minard MN; Odier P; Pietrzyk B; Casado MP; Chmeissani M; Crespo JM; Delfino M; Efthymiopoulos I; Fernandez E; FernandezBosman M; Garrido L; Juste A; Martinez M; Orteu S; Pacheco A; Padilla C; Pascual A; Perlas JA; Riu I; Sanchez F; Teubert F; Colaleo A; Creanza D ;dePalma M; Gelao G ;Girone M; Iaselli G ;Maggi G ;Maggi M; Marinelli N; Nuzzo S; Ranieri A; Raso G; Ruggieri F; Selvaggi G; Silvestris L; Tempesta P; Zito G; Huang X; Lin J; Ouyang Q; Wang T; Xie Y; Xu R; Xue S; Zhang J; Zhang L; Zhao W; Alemany R; Bazarko AO; Bonvicini G; Cattaneo M; Comas P; Coyle P; Drevermann H; Forty RW; Frank M; Hagelberg R; Harvey J; Janot P; Jost B; Kneringer E; Knobloch J; Lehraus I; Martin EB; Mato P; Minten A; Miquel R; Mir LM; Moneta L; Oest T; Palla F; Pater JR; Pusztaszeri JF; Ranjard F; Rensing P; Rolandi L; Schlatter D; Schmelling M; Schneider O; Tejessy W; Tomalin IR; Venturi A; Wachsmuth H; Wagner A; Wildish T; Ajaltouni Z; Barres A; Boyer C; Falvard A; Gay P; Guicheney C; Henrard P; Jousset J; Michel B; Monteil S; Montret JC; Pallin D; Perret P; Podlyski F; Proriol J; Rossignol JM; Fearnley T; Hansen JB; Hansen JD; Hansen JR; Hansen PH; Nilsson BS; Waananen A; Kyriakis A; Markou C; Simopoulou E; Siotis I; Vayaki A; Zachariadou K; Blondel A; Bonneaud G; Brient JC; Bourdon P; Rouge A; Rumpf M; Valassi A; Verderi M; Videau H; Candlin DJ; Parsons MI; Focardi E; Parrini G; Corden M; Georgiopoulos C; Jaffe DE; Antonelli A; Bencivenni G; Bologna G; Bossi F; Campana P; Capon G; Gasper D; Chiarella V; Felici G; Laurelli P; Mannocchi G; Murtas F; Murtas GP; Passalacqua L; PepeAltarelli M; Curtis L; Dorris SJ; Halley AW; Knowles IG; Lynch JG; OShea V; Raine C; Reeves P; Scarr JM; Smith K; Thompson AS; Thomson F; Thorn S; Turnbull RM; Becker U; Geweniger C; Graefe G; Hanke P; Hansper G; Hepp V; Kluge EE; Putzer A; Rensch B; Schmidt M; Sommer J; Stenzel H; Tittel K; Werner S; Wunsch M; Abbaneo D; Beuselinck R; Binnie DM; Cameron W; Dornan PJ; Moutoussi A; Nash J; Sedgbeer JK; Stacey AM; Williams MD; Dissertori G; Girtler P; Kuhn D; Rudolph G; Betteridge AP; Bowdery CK; Colrain P; Crawford G; Finch AJ; Foster F; Hughes G; Sloan T; Williams MI; Galla A; Greene AM; Kleinknecht K; Quast G; Renk B; Rohne E; Sander HG; Zeitnitz PVGC; Aubert JJ; Bencheikh AM; Benchouk C; Bonissent A; Bujosa G; Calvet D; Carr J; Diaconu C; Etienne F; Konstantinidis N; Payre P; Rousseau D; Talby M; Sadouki A; Thulasidas M; Trabelsi K; Aleppo M; Ragusa F; Abt I; Assmann R; Bauer C; Blum W; Dietl H; Dydak F; Ganis G; Gotzhein C; Jakobs K; Kroha H; Lutjens G; Lutz G; Manner W; Moser HG; Richter R; RosadoSchlosser A; Schael S; Settles R; Seywerd H; StDenis R; Wiedenmann W; Wolf G; Boucrot J; Callot O; Cordier A; Davier M; Duflot L; Grivaz JF; Heusse P; Jacquet M; Kim DW; LeDiberder F; Lefranois J; Lutz AM; Nikolic I; Park HJ; Park IC; Schune MH; Simion S; Veillet JJ; Videau I; Azzurri P; Bagliesi G; Batignani G; Bettarini S; Bozzi C; Calderini G; Carpinelli M; Ciocci MA; Ciulli V; DellOrso R; Fantechi R; Ferrante I; Foa L; Forti F; Giassi A; Giorgi MA; Gregorio A; Ligabue F; Lusiani A; Marrocchesi PS; Messineo A; Rizzo G; Sanguinetti G; Sciaba A; Spagnolo P; Steinberger J; Tenchini R; Tonelli G; Vannini C; Verdini PG; Walsh J; Blair GA; Bryant LM; Cerutti F; Chambers JT; Gao Y; Green MG; Medcalf T; Perrodo P; Strong JA; vonWimmerspergToeller JH; Botterill DR; Clifft RW; Edgecock TR; Haywood S; Maley P; Norton PR; Thompson JC; Wright AE; BlochDevaux B; Colas P; Emery S; Kozanecki W; Lancon E; Lemaire MC; Locci E; Marx B; Perez P; Rander J; Renardy JF; Roussarie A; Schuller JP; Schwindling J; Trabelsi A; Vallage B; Black SN; Dann JH; Johnson RP; Kim HY; Litke AM; McNeil MA; Taylor G; Booth CN; Boswell R; Brew CAJ; Cartwright S; Combley F; Koksal A; Letho M; Newton WM; Reeve J; Thompson LF; Bohrer A; Brandt S; Buscher V; Cowan G; Grupen C; Lutters G; MinguetRodriguez J; Rivera F; Saraiva P; Smolik L; Stephan F; Apollonio M; Bosisio L; DellaMarina R; Giannini G; Gobbo B; Musolino G; Rothberg J; Wasserbaech S; Armstrong SR; Bellantoni L; Elmer P; Feng Z; Ferguson DPS; Gao YS; Gonzales S; Grahl J; Greening TC; Harton JL; Hayes OJ; Hu H; McNamara PA; Nachtman JM; Orejudos W; Pan YB; Saadi Y; Schmitt M; Scott IJ; Sharma V; Walsh AM; Wu SL; Wu X; Yamartino JM; Zheng M; Zobernig G
1996-01-01
Abstract
The lifetimes of the B-0 and B+ mesons have been measured with the ALEPH detector at LEP, using approximately 3 million hadronic Z decays collected in the period 1991-1994. In the first of three methods, semileptonic decays of B-0 and B+ mesons were partially reconstructed by identifying events containing a lepton with an associated D*(-) or (D) over bar(0) meson. The second method used fully reconstructed B-0 and B+ mesons. The third method, used to measure the B-0 lifetime, employed a partial reconstruction technique to identify B-0 --> D*(-)pi(+)X decays. The combined results are tau(0) = 1.55 +/- 0.06 +/- 0.03 ps, tau(+) = 1.58 +/- 0.09 +/- 0.03 ps, tau(+)/tau(0) = 1.03 +/- 0.08 +/- 0.02.
Citazione
Improved measurement of theB 0 andB + meson lifetimes / Buskulic, D; Debonis, I; Decamp, D; Ghez, P; Coy, C; Lees, Jp; Lucotte, A; Minard, Mn; Odier, P; Pietrzyk, B; Casado, Mp; Chmeissani, M; Crespo, Jm; Delfino, M; Efthymiopoulos, I; Fernandez, E; Fernandezbosman, M; Garrido, L; Juste, A; Martinez, M; Orteu, S; Pacheco, A; Padilla, C; Pascual, A; Perlas, Ja; Riu, I; Sanchez, F; Teubert, F; Colaleo, A; Creanza, D; Depalma, M; Gelao, G; Girone, M; Iaselli, G; Maggi, G; Maggi, M; Marinelli, N; Nuzzo, S; Ranieri, A; Raso, G; Ruggieri, F; Selvaggi, G; Silvestris, L; Tempesta, P; Zito, G; Huang, X; Lin, J; Ouyang, Q; Wang, T; Xie, Y; Xu, R; Xue, S; Zhang, J; Zhang, L; Zhao, W; Alemany, R; Bazarko, Ao; Bonvicini, G; Cattaneo, M; Comas, P; Coyle, P; Drevermann, H; Forty, Rw; Frank, M; Hagelberg, R; Harvey, J; Janot, P; Jost, B; Kneringer, E; Knobloch, J; Lehraus, I; Martin, Eb; Mato, P; Minten, A; Miquel, R; Mir, Lm; Moneta, L; Oest, T; Palla, F; Pater, Jr; Pusztaszeri, Jf; Ranjard, F; Rensing, P; Rolandi, L; Schlatter, D; Schmelling, M; Schneider, O; Tejessy, W; Tomalin, Ir; Venturi, A; Wachsmuth, H; Wagner, A; Wildish, T; Ajaltouni, Z; Barres, A; Boyer, C; Falvard, A; Gay, P; Guicheney, C; Henrard, P; Jousset, J; Michel, B; Monteil, S; Montret, Jc; Pallin, D; Perret, P; Podlyski, F; Proriol, J; Rossignol, Jm; Fearnley, T; Hansen, Jb; Hansen, Jd; Hansen, Jr; Hansen, Ph; Nilsson, Bs; Waananen, A; Kyriakis, A; Markou, C; Simopoulou, E; Siotis, I; Vayaki, A; Zachariadou, K; Blondel, A; Bonneaud, G; Brient, Jc; Bourdon, P; Rouge, A; Rumpf, M; Valassi, A; Verderi, M; Videau, H; Candlin, Dj; Parsons, Mi; Focardi, E; Parrini, G; Corden, M; Georgiopoulos, C; Jaffe, De; Antonelli, A; Bencivenni, G; Bologna, G; Bossi, F; Campana, P; Capon, G; Gasper, D; Chiarella, V; Felici, G; Laurelli, P; Mannocchi, G; Murtas, F; Murtas, Gp; Passalacqua, L; Pepealtarelli, M; Curtis, L; Dorris, Sj; Halley, Aw; Knowles, Ig; Lynch, Jg; Oshea, V; Raine, C; Reeves, P; Scarr, Jm; Smith, K; Thompson, As; Thomson, F; Thorn, S; Turnbull, Rm; Becker, U; Geweniger, C; Graefe, G; Hanke, P; Hansper, G; Hepp, V; Kluge, Ee; Putzer, A; Rensch, B; Schmidt, M; Sommer, J; Stenzel, H; Tittel, K; Werner, S; Wunsch, M; Abbaneo, D; Beuselinck, R; Binnie, Dm; Cameron, W; Dornan, Pj; Moutoussi, A; Nash, J; Sedgbeer, Jk; Stacey, Am; Williams, Md; Dissertori, G; Girtler, P; Kuhn, D; Rudolph, G; Betteridge, Ap; Bowdery, Ck; Colrain, P; Crawford, G; Finch, Aj; Foster, F; Hughes, G; Sloan, T; Williams, Mi; Galla, A; Greene, Am; Kleinknecht, K; Quast, G; Renk, B; Rohne, E; Sander, Hg; Zeitnitz, Pvgc; Aubert, Jj; Bencheikh, Am; Benchouk, C; Bonissent, A; Bujosa, G; Calvet, D; Carr, J; Diaconu, C; Etienne, F; Konstantinidis, N; Payre, P; Rousseau, D; Talby, M; Sadouki, A; Thulasidas, M; Trabelsi, K; Aleppo, M; Ragusa, F; Abt, I; Assmann, R; Bauer, C; Blum, W; Dietl, H; Dydak, F; Ganis, G; Gotzhein, C; Jakobs, K; Kroha, H; Lutjens, G; Lutz, G; Manner, W; Moser, Hg; Richter, R; Rosadoschlosser, A; Schael, S; Settles, R; Seywerd, H; Stdenis, R; Wiedenmann, W; Wolf, G; Boucrot, J; Callot, O; Cordier, A; Davier, M; Duflot, L; Grivaz, Jf; Heusse, P; Jacquet, M; Kim, Dw; Lediberder, F; Lefranois, J; Lutz, Am; Nikolic, I; Park, Hj; Park, Ic; Schune, Mh; Simion, S; Veillet, Jj; Videau, I; Azzurri, P; Bagliesi, G; Batignani, G; Bettarini, S; Bozzi, C; Calderini, G; Carpinelli, M; Ciocci, Ma; Ciulli, V; Dellorso, R; Fantechi, R; Ferrante, I; Foa, L; Forti, F; Giassi, A; Giorgi, Ma; Gregorio, A; Ligabue, F; Lusiani, A; Marrocchesi, Ps; Messineo, A; Rizzo, G; Sanguinetti, G; Sciaba, A; Spagnolo, P; Steinberger, J; Tenchini, R; Tonelli, G; Vannini, C; Verdini, Pg; Walsh, J; Blair, Ga; Bryant, Lm; Cerutti, F; Chambers, Jt; Gao, Y; Green, Mg; Medcalf, T; Perrodo, P; Strong, Ja; Vonwimmerspergtoeller, Jh; Botterill, Dr; Clifft, Rw; Edgecock, Tr; Haywood, S; Maley, P; Norton, Pr; Thompson, Jc; Wright, Ae; Blochdevaux, B; Colas, P; Emery, S; Kozanecki, W; Lancon, E; Lemaire, Mc; Locci, E; Marx, B; Perez, P; Rander, J; Renardy, Jf; Roussarie, A; Schuller, Jp; Schwindling, J; Trabelsi, A; Vallage, B; Black, Sn; Dann, Jh; Johnson, Rp; Kim, Hy; Litke, Am; Mcneil, Ma; Taylor, G; Booth, Cn; Boswell, R; Brew, Caj; Cartwright, S; Combley, F; Koksal, A; Letho, M; Newton, Wm; Reeve, J; Thompson, Lf; Bohrer, A; Brandt, S; Buscher, V; Cowan, G; Grupen, C; Lutters, G; Minguetrodriguez, J; Rivera, F; Saraiva, P; Smolik, L; Stephan, F; Apollonio, M; Bosisio, L; Dellamarina, R; Giannini, G; Gobbo, B; Musolino, G; Rothberg, J; Wasserbaech, S; Armstrong, Sr; Bellantoni, L; Elmer, P; Feng, Z; Ferguson, Dps; Gao, Ys; Gonzales, S; Grahl, J; Greening, Tc; Harton, Jl; Hayes, Oj; H, Hu; Mcnamara, Pa; Nachtman, Jm; Orejudos, W; Pan, Yb; Saadi, Y; Schmitt, M; Scott, Ij; Sharma, V; Walsh, Am; Wu, Sl; Wu, X; Yamartino, Jm; Zheng, M; Zobernig, G. - In: ZEITSCHRIFT FÜR PHYSIK. C, PARTICLES AND FIELDS. - ISSN 0170-9739. - STAMPA. - 71:1(1996), pp. 31-44. [10.1007/s002880050145]
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