The mean lifetime of the tau lepton is measured in a sample of 25700 tau pairs collected in 1992 with the ALEPH detector at LEP. A new analysis of the 1-1 topology events is introduced. In this analysis, the dependence of the impact parameter sum distribution on the daughter track momenta is taken into account, yielding improved precision compared to other impact parameter sum methods. Three other analyses of the one- and three-prong tau decays are updated with increased statistics. The measured lifetime is 293.5+/-3.1+/-1.7 fs. Including previous (1989-1991) ALEPH measurements, the combined tau lifetime is 293.7+/-2.7+/-1.6 fs.
Measurement of the τ lepton lifetime / Buskulic, D; Casper, D; Debonis, I; Decamp, D; Ghez, P; Goy, C; Lees, Jp; Lucotte, A; Minard, Mn; Odier, P; Pietrzyk, B; Ariztizabal, F; Chmeissani, M; Crespo, Jm; Efthymiopoulos, I; Fernandez, E; Fernandezbosman, M; Gaitan, V; Garrido, L; Martinez, M; Orteu, S; Pacheco, A; Padilla, C; Palla, F; Pascual, A; Perlas, Ja; Sanchez, F; Teubert, F; Colaleo, A; Creanza, D; Depalma, M; Farilla, A; Gelao, G; Girone, M; Iaselli, G; Maggi, G; Maggi, M; Marinelli, N; Natali, S; Nuzzo, S; Ranieri, A; Raso, G; Romano, F; 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; Bonvicini, G; Cattaneo, M; Comas, P; Coyle, P; Drevermann, H; Engelhardt, A; Forty, Rw; Frank, M; Hagelberg, R; Harvey, J; Jacobsen, R; Janot, P; Jost, B; Kneringer, E; Knobloch, J; Lehraus, I; Markou, C; Martin, Eb; Mato, P; Minten, A; Miquel, R; Oest, T; Palazzi, P; Pater, Jr; Pusztaszeri, Jf; Ranjard, F; Rensing, P; Rolandi, L; Schlatter, D; Schmelling, M; Schneider, O; Tejessy, W; Tomalin, Ir; Venturi, A; Wachsmuth, H; Wiedenmann, W; Wildish, T; Witzeling, W; Wotschack, J; Ajaltouni, Z; Bardadinotwinowska, M; 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; Saadi, F; Fearnley, T; Hansen, Jb; Hansen, Jd; Hansen, Jr; Hansen, Ph; Nilsson, Bs; Kyriakis, A; Simopoulou, E; Siotis, I; Vayaki, A; Zachariadou, K; Blondel, A; Bonneaud, G; Brient, Jc; Bourdon, P; Passalacqua, L; Rouge, A; Rumpf, M; Tanaka, R; Valassi, A; Verderi, M; Videau, H; Candlin, Dj; Parsons, Mi; Focardi, E; Parrini, G; Corden, M; Delfino, 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; Pepealtarelli, M; Dorris, Sj; Halley, Aw; Tenhave, I; Knowles, Ig; Lynch, Jg; Morton, Wt; Oshea, V; Raine, C; Reeves, P; Scarr, Jm; Smith, K; Smith, Mg; Thompson, As; Thomson, F; Thorn, S; Turnbull, Rm; Becker, U; Braun, O; Geweniger, C; Graefe, G; Hanke, P; Hepp, V; Kluge, Ee; Putzer, A; Rensch, B; Schmidt, M; Sommer, J; Stenzel, H; Tittel, K; Werner, S; Wunsch, M; Beuselinck, R; Binnie, Dm; Cameron, W; Colling, Dj; Dornan, Pj; Konstantinidis, N; Moneta, L; Moutoussi, A; Nash, J; Sanmartin, G; Sedgbeer, Jk; Stacey, Am; Dissertori, G; Girtler, P; Kuhn, D; Rudolph, G; Bowdery, Ck; Brodbeck, Tj; Colrain, P; Crawford, G; Finch, Aj; Foster, F; Hughes, G; Sloan, T; Whelan, Ep; Williams, Mi; Galla, A; Greene, Am; Kleinknecht, K; Quast, G; Raab, J; Renk, B; Sander, Hg; Wanke, R; Vangemmeren, P; Zeitnitz, C; Aubert, Jj; Bencheikh, Am; Benchouk, C; Bonissent, A; Bujosa, G; Calvet, D; Carr, J; Diaconu, C; Etienne, F; Thulasidas, M; Nicod, D; Payre, P; Rousseau, D; Talby, M; Abt, I; Assmann, R; Bauer, C; Blum, W; Brown, D; 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; Wolf, G; Alemany, R; Boucrot, J; Callot, O; Cordier, A; Courault, F; Davier, M; Duflot, L; Grivaz, Jf; Heusse, P; Jacquet, M; Kim, Dw; Lediberder, F; Lefrancois, J; Lutz, Am; Musolino, G; Nikolic, I; Park, Hj; Park, Ic; Schune, Mh; Simion, S; Veillet, Jj; Videau, I; Abbaneo, D; Azzurri, P; Bagliesi, G; Batignani, G; Bettarini, S; Bozzi, C; Calderini, G; Carpinelli, M; Ciocci, Ma; Ciulli, V; Dellorso, R; Fantechi, R; Ferrante, I; Fidecaro, F; 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; Triggiani, G; Vannini, C; Verdini, Pg; Walsh, J; Betteridge, Ap; Blair, Ga; Bryant, Lm; Cerutti, F; Gao, Y; Green, Mg; Johnson, Dl; Medcalf, T; Mir, Lm; Perrodo, P; Strong, Ja; Bertin, V; Botterill, Dr; Clifft, Rw; Edgecock, Tr; Haywood, S; Edwards, M; Maley, P; Norton, Pr; Thompson, Jc; 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; Johnson, Rp; Kim, Hy; Litke, Am; Mcneil, Ma; Taylor, G; Beddall, A; Booth, Cn; Boswell, R; Cartwright, S; Combley, F; Dawson, I; Koksal, A; Letho, M; Newton, Wm; Rankin, C; Thompson, Lf; Bohrer, A; Brandt, S; Cowan, G; Feigl, E; Grupen, C; Lutters, G; Minguetrodriguez, J; Rivera, F; Saraiva, P; Smolik, L; Stephan, F; Apollonio, M; Bosisio, L; Dellamarina, R; Giannini, G; Gobbo, B; Ragusa, F; Rothberg, J; Wasserbaech, S; Armstrong, Sr; Bellantoni, L; Elmer, P; Feng, Z; Ferguson, Dps; Gao, Ys; Gonzalez, S; Grahl, J; Harton, Jl; Hayes, Oj; H, Hu; Mcnamara, Pa; Nachtman, Jm; Orejudos, W; Pan, Yb; Saadi, Y; Schmitt, M; Scott, Ij; Sharma, V; Turk, Jd; Walsh, Am; Wu, Sl; Wu, X; Yamartino, Jm; Zheng, M; Zobernig, G. - In: ZEITSCHRIFT FÜR PHYSIK. C, PARTICLES AND FIELDS. - ISSN 0170-9739. - STAMPA. - 70:4(1996), pp. 549-559. [10.1007/s002880050132]
Measurement of the τ lepton lifetime
Buskulic D; Casper D; DeBonis I; Decamp D; Ghez P; Goy C; Lees JP; Lucotte A; Minard MN; Odier P; Pietrzyk B; Ariztizabal F; Chmeissani M; Crespo JM; Efthymiopoulos I; Fernandez E; FernandezBosman M; Gaitan V; Garrido L; Martinez M; Orteu S; Pacheco A; Padilla C; Palla F; Pascual A; Perlas JA; Sanchez F; Teubert F; Colaleo A; Creanza D ;dePalma M; Farilla A; Gelao G ;Girone M; Iaselli G ;Maggi G ;Maggi M; Marinelli N; Natali S; Nuzzo S; Ranieri A; Raso G; Romano F; 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; Bonvicini G; Cattaneo M; Comas P; Coyle P; Drevermann H; Engelhardt A; Forty RW; Frank M; Hagelberg R; Harvey J; Jacobsen R; Janot P; Jost B; Kneringer E; Knobloch J; Lehraus I; Markou C; Martin EB; Mato P; Minten A; Miquel R; Oest T; Palazzi P; Pater JR; Pusztaszeri JF; Ranjard F; Rensing P; Rolandi L; Schlatter D; Schmelling M; Schneider O; Tejessy W; Tomalin IR; Venturi A; Wachsmuth H; Wiedenmann W; Wildish T; Witzeling W; Wotschack J; Ajaltouni Z; BardadinOtwinowska M; 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; Saadi F; Fearnley T; Hansen JB; Hansen JD; Hansen JR; Hansen PH; Nilsson BS; Kyriakis A; Simopoulou E; Siotis I; Vayaki A; Zachariadou K; Blondel A; Bonneaud G; Brient JC; Bourdon P; Passalacqua L; Rouge A; Rumpf M; Tanaka R; Valassi A; Verderi M; Videau H; Candlin DJ; Parsons MI; Focardi E; Parrini G; Corden M; Delfino 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; PepeAltarelli M; Dorris SJ; Halley AW; tenHave I; Knowles IG; Lynch JG; Morton WT; OShea V; Raine C; Reeves P; Scarr JM; Smith K; Smith MG; Thompson AS; Thomson F; Thorn S; Turnbull RM; Becker U; Braun O; Geweniger C; Graefe G; Hanke P; Hepp V; Kluge EE; Putzer A; Rensch B; Schmidt M; Sommer J; Stenzel H; Tittel K; Werner S; Wunsch M; Beuselinck R; Binnie DM; Cameron W; Colling DJ; Dornan PJ; Konstantinidis N; Moneta L; Moutoussi A; Nash J; SanMartin G; Sedgbeer JK; Stacey AM; Dissertori G; Girtler P; Kuhn D; Rudolph G; Bowdery CK; Brodbeck TJ; Colrain P; Crawford G; Finch AJ; Foster F; Hughes G; Sloan T; Whelan EP; Williams MI; Galla A; Greene AM; Kleinknecht K; Quast G; Raab J; Renk B; Sander HG; Wanke R; vanGemmeren P; Zeitnitz C; Aubert JJ; Bencheikh AM; Benchouk C; Bonissent A; Bujosa G; Calvet D; Carr J; Diaconu C; Etienne F; Thulasidas M; Nicod D; Payre P; Rousseau D; Talby M; Abt I; Assmann R; Bauer C; Blum W; Brown D; 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; Wolf G; Alemany R; Boucrot J; Callot O; Cordier A; Courault F; Davier M; Duflot L; Grivaz JF; Heusse P; Jacquet M; Kim DW; LeDiberder F; Lefrancois J; Lutz AM; Musolino G; Nikolic I; Park HJ; Park IC; Schune MH; Simion S; Veillet JJ; Videau I; Abbaneo D; Azzurri P; Bagliesi G; Batignani G; Bettarini S; Bozzi C; Calderini G; Carpinelli M; Ciocci MA; Ciulli V; DellOrso R; Fantechi R; Ferrante I; Fidecaro F; 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; Triggiani G; Vannini C; Verdini PG; Walsh J; Betteridge AP; Blair GA; Bryant LM; Cerutti F; Gao Y; Green MG; Johnson DL; Medcalf T; Mir LM; Perrodo P; Strong JA; Bertin V; Botterill DR; Clifft RW; Edgecock TR; Haywood S; Edwards M; Maley P; Norton PR; Thompson JC; 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; Johnson RP; Kim HY; Litke AM; McNeil MA; Taylor G; Beddall A; Booth CN; Boswell R; Cartwright S; Combley F; Dawson I; Koksal A; Letho M; Newton WM; Rankin C; Thompson LF; Bohrer A; Brandt S; Cowan G; Feigl E; Grupen C; Lutters G; MinguetRodriguez J; Rivera F; Saraiva P; Smolik L; Stephan F; Apollonio M; Bosisio L; DellaMarina R; Giannini G; Gobbo B; Ragusa F; Rothberg J; Wasserbaech S; Armstrong SR; Bellantoni L; Elmer P; Feng Z; Ferguson DPS; Gao YS; Gonzalez S; Grahl J; Harton JL; Hayes OJ; Hu H; McNamara PA; Nachtman JM; Orejudos W; Pan YB; Saadi Y; Schmitt M; Scott IJ; Sharma V; Turk JD; Walsh AM; Wu SL; Wu X; Yamartino JM; Zheng M; Zobernig G
1996-01-01
Abstract
The mean lifetime of the tau lepton is measured in a sample of 25700 tau pairs collected in 1992 with the ALEPH detector at LEP. A new analysis of the 1-1 topology events is introduced. In this analysis, the dependence of the impact parameter sum distribution on the daughter track momenta is taken into account, yielding improved precision compared to other impact parameter sum methods. Three other analyses of the one- and three-prong tau decays are updated with increased statistics. The measured lifetime is 293.5+/-3.1+/-1.7 fs. Including previous (1989-1991) ALEPH measurements, the combined tau lifetime is 293.7+/-2.7+/-1.6 fs.
Citazione
Measurement of the τ lepton lifetime / Buskulic, D; Casper, D; Debonis, I; Decamp, D; Ghez, P; Goy, C; Lees, Jp; Lucotte, A; Minard, Mn; Odier, P; Pietrzyk, B; Ariztizabal, F; Chmeissani, M; Crespo, Jm; Efthymiopoulos, I; Fernandez, E; Fernandezbosman, M; Gaitan, V; Garrido, L; Martinez, M; Orteu, S; Pacheco, A; Padilla, C; Palla, F; Pascual, A; Perlas, Ja; Sanchez, F; Teubert, F; Colaleo, A; Creanza, D; Depalma, M; Farilla, A; Gelao, G; Girone, M; Iaselli, G; Maggi, G; Maggi, M; Marinelli, N; Natali, S; Nuzzo, S; Ranieri, A; Raso, G; Romano, F; 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; Bonvicini, G; Cattaneo, M; Comas, P; Coyle, P; Drevermann, H; Engelhardt, A; Forty, Rw; Frank, M; Hagelberg, R; Harvey, J; Jacobsen, R; Janot, P; Jost, B; Kneringer, E; Knobloch, J; Lehraus, I; Markou, C; Martin, Eb; Mato, P; Minten, A; Miquel, R; Oest, T; Palazzi, P; Pater, Jr; Pusztaszeri, Jf; Ranjard, F; Rensing, P; Rolandi, L; Schlatter, D; Schmelling, M; Schneider, O; Tejessy, W; Tomalin, Ir; Venturi, A; Wachsmuth, H; Wiedenmann, W; Wildish, T; Witzeling, W; Wotschack, J; Ajaltouni, Z; Bardadinotwinowska, M; 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; Saadi, F; Fearnley, T; Hansen, Jb; Hansen, Jd; Hansen, Jr; Hansen, Ph; Nilsson, Bs; Kyriakis, A; Simopoulou, E; Siotis, I; Vayaki, A; Zachariadou, K; Blondel, A; Bonneaud, G; Brient, Jc; Bourdon, P; Passalacqua, L; Rouge, A; Rumpf, M; Tanaka, R; Valassi, A; Verderi, M; Videau, H; Candlin, Dj; Parsons, Mi; Focardi, E; Parrini, G; Corden, M; Delfino, 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; Pepealtarelli, M; Dorris, Sj; Halley, Aw; Tenhave, I; Knowles, Ig; Lynch, Jg; Morton, Wt; Oshea, V; Raine, C; Reeves, P; Scarr, Jm; Smith, K; Smith, Mg; Thompson, As; Thomson, F; Thorn, S; Turnbull, Rm; Becker, U; Braun, O; Geweniger, C; Graefe, G; Hanke, P; Hepp, V; Kluge, Ee; Putzer, A; Rensch, B; Schmidt, M; Sommer, J; Stenzel, H; Tittel, K; Werner, S; Wunsch, M; Beuselinck, R; Binnie, Dm; Cameron, W; Colling, Dj; Dornan, Pj; Konstantinidis, N; Moneta, L; Moutoussi, A; Nash, J; Sanmartin, G; Sedgbeer, Jk; Stacey, Am; Dissertori, G; Girtler, P; Kuhn, D; Rudolph, G; Bowdery, Ck; Brodbeck, Tj; Colrain, P; Crawford, G; Finch, Aj; Foster, F; Hughes, G; Sloan, T; Whelan, Ep; Williams, Mi; Galla, A; Greene, Am; Kleinknecht, K; Quast, G; Raab, J; Renk, B; Sander, Hg; Wanke, R; Vangemmeren, P; Zeitnitz, C; Aubert, Jj; Bencheikh, Am; Benchouk, C; Bonissent, A; Bujosa, G; Calvet, D; Carr, J; Diaconu, C; Etienne, F; Thulasidas, M; Nicod, D; Payre, P; Rousseau, D; Talby, M; Abt, I; Assmann, R; Bauer, C; Blum, W; Brown, D; 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; Wolf, G; Alemany, R; Boucrot, J; Callot, O; Cordier, A; Courault, F; Davier, M; Duflot, L; Grivaz, Jf; Heusse, P; Jacquet, M; Kim, Dw; Lediberder, F; Lefrancois, J; Lutz, Am; Musolino, G; Nikolic, I; Park, Hj; Park, Ic; Schune, Mh; Simion, S; Veillet, Jj; Videau, I; Abbaneo, D; Azzurri, P; Bagliesi, G; Batignani, G; Bettarini, S; Bozzi, C; Calderini, G; Carpinelli, M; Ciocci, Ma; Ciulli, V; Dellorso, R; Fantechi, R; Ferrante, I; Fidecaro, F; 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; Triggiani, G; Vannini, C; Verdini, Pg; Walsh, J; Betteridge, Ap; Blair, Ga; Bryant, Lm; Cerutti, F; Gao, Y; Green, Mg; Johnson, Dl; Medcalf, T; Mir, Lm; Perrodo, P; Strong, Ja; Bertin, V; Botterill, Dr; Clifft, Rw; Edgecock, Tr; Haywood, S; Edwards, M; Maley, P; Norton, Pr; Thompson, Jc; 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; Johnson, Rp; Kim, Hy; Litke, Am; Mcneil, Ma; Taylor, G; Beddall, A; Booth, Cn; Boswell, R; Cartwright, S; Combley, F; Dawson, I; Koksal, A; Letho, M; Newton, Wm; Rankin, C; Thompson, Lf; Bohrer, A; Brandt, S; Cowan, G; Feigl, E; Grupen, C; Lutters, G; Minguetrodriguez, J; Rivera, F; Saraiva, P; Smolik, L; Stephan, F; Apollonio, M; Bosisio, L; Dellamarina, R; Giannini, G; Gobbo, B; Ragusa, F; Rothberg, J; Wasserbaech, S; Armstrong, Sr; Bellantoni, L; Elmer, P; Feng, Z; Ferguson, Dps; Gao, Ys; Gonzalez, S; Grahl, J; Harton, Jl; Hayes, Oj; H, Hu; Mcnamara, Pa; Nachtman, Jm; Orejudos, W; Pan, Yb; Saadi, Y; Schmitt, M; Scott, Ij; Sharma, V; Turk, Jd; Walsh, Am; Wu, Sl; Wu, X; Yamartino, Jm; Zheng, M; Zobernig, G. - In: ZEITSCHRIFT FÜR PHYSIK. C, PARTICLES AND FIELDS. - ISSN 0170-9739. - STAMPA. - 70:4(1996), pp. 549-559. [10.1007/s002880050132]
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