Measurement of the $\bar{B}^{0}$ and $B^{-}$ Meson Lifetimes

The lifetimes of the B0 and B- mesons are measured using a sample of about four million hadronic Z decays collected from 1991 to 19 95 with the ALEPH detector at LEP. The data sample has been recently reprocessed, achieving a substantial improvement in the tracking performance. Semileptonic decays o...

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Detalles Bibliográficos
Autores principales: Barate, R., Decamp, D., Ghez, Philippe, Goy, C., Lees, J.P., Merle, E., Minard, M.N., Pietrzyk, B., Bravo, S., Casado, M.P., Chmeissani, M., Crespo, J.M., Fernandez, E., Fernandez-Bosman, M., Garrido, Ll., Grauges, E., Martinez, M., Merino, G., Miquel, R., Mir, Ll.M., Pacheco, A., Ruiz, H., Colaleo, A., Creanza, D., de Palma, M., Iaselli, G., Maggi, G., Maggi, M., 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., Xu, R., Xue, S., Zhang, J., Zhang, L., Zhao, W., Abbaneo, D., Boix, G., Buchmuller, O., Cattaneo, M., Cerutti, F., Dissertori, G., Drevermann, H., Forty, R.W., Frank, M., Greening, T.C., Hansen, J.B., Harvey, John, Janot, P., Jost, B., Lehraus, I., Mato, P., Minten, A., Moutoussi, A., Ranjard, F., Rolandi, Gigi, Schlatter, D., Schmitt, M., Schneider, O., Spagnolo, P., Tejessy, W., Teubert, F., Tournefier, E., Wright, A.E., Ajaltouni, Z., Badaud, F., Chazelle, G., Deschamps, O., Falvard, A., Gay, P., Guicheney, C., Henrard, P., Jousset, J., Michel, B., Monteil, S., Montret, J.C., Pallin, D., Perret, P., Podlyski, F., Hansen, J.D., Hansen, J.R., Hansen, P.H., Nilsson, B.S., Waananen, A., Daskalakis, G., Kyriakis, A., Markou, C., Simopoulou, E., Vayaki, A., Blondel, A., Bonneaud, G., Brient, J.C., Rouge, A., Rumpf, M., Swynghedauw, M., Verderi, M., Videau, H., Focardi, E., Parrini, G., Zachariadou, K., Antonelli, A., Antonelli, M., Bencivenni, G., Bologna, G., Bossi, F., Campana, P., Capon, G., Chiarella, V., Laurelli, P., Mannocchi, G., Murtas, F., Murtas, G.P., Passalacqua, L., Pepe-Altarelli, M., Halley, A.W., Lynch, J.G., Negus, P., O'Shea, V., Raine, C., Teixeira-Dias, P., Thompson, A.S., Cavanaugh, R., Dhamotharan, S., Geweniger, C., Hanke, P., Hansper, G., Hepp, V., Kluge, E.E., Putzer, A., Sommer, J., Tittel, K., Werner, S., Wunsch, M., Beuselinck, R., Binnie, D.M., Cameron, W., Dornan, P.J., Girone, M., Marinelli, N., Sedgbeer, J.K., Thompson, J.C., Thomson, Evelyn J., Ghete, V.M., Girtler, P., Kneringer, E., Kuhn, D., Rudolph, G., Bowdery, C.K., Buck, P.G., Finch, A.J., Foster, F., Hughes, G., Jones, R.W.L., Robertson, N.A., Giehl, I., Jakobs, K., Kleinknecht, K., Quast, G., Renk, B., Rohne, E., Sander, H.G., Wachsmuth, H., Zeitnitz, C., Bonissent, A., Carr, J., Coyle, P., Leroy, O., Payre, P., Rousseau, D., Talby, M., Aleppo, M., Ragusa, F., Dietl, H., Ganis, G., Heister, A., Huttmann, K., Lutjens, G., Mannert, C., Manner, W., Moser, H.G., Schael, S., Settles, R., Stenzel, H., Wiedenmann, W., Wolf, G., Azzurri, P., Boucrot, J., Callot, O., Chen, S., Cordier, A., Davier, M., Duflot, L., Grivaz, J.F., Heusse, Ph., Jacholkowska, A., Le Diberder, F., Lefrancois, J., Lutz, A.M., Schune, M.H., Veillet, J.J., Videau, I., Yuan, C., Zerwas, D., Bagliesi, Giuseppe, Boccali, T., Calderini, G., Ciulli, V., Foa, L., Giassi, A., Ligabue, F., Messineo, A., Palla, F., Rizzo, G., Sanguinetti, G., Sciaba, A., Sguazzoni, G., Tenchini, R., Venturi, A., Verdini, P.G., Blair, G.A., Cowan, G., Green, M.G., Medcalf, T., Strong, J.A., von Wimmersperg-Toeller, J.H., Clifft, R.W., Edgecock, T.R., Norton, P.R., Tomalin, I.R., Bloch-Devaux, Brigitte, Colas, P., Emery, S., Kozanecki, W., Lancon, E., Lemaire, M.C., Locci, E., Perez, P., Rander, J., Renardy, J.F., Roussarie, A., Schuller, J.P., Schwindling, J., Trabelsi, A., Vallage, B., Black, S.N., Dann, J.H., Johnson, R.P., Kim, H.Y., Konstantinidis, N., Litke, A.M., McNeil, M.A., Taylor, G., Booth, C.N., Cartwright, S., Combley, F., Lehto, M., Thompson, L.F., Affholderbach, K., Boehrer, Armin, Brandt, S., Grupen, C., Misiejuk, A., Prange, G., Sieler, U., Giannini, G., Gobbo, B., Rothberg, J., Wasserbaech, S., Armstrong, S.R., Cranmer, K., Elmer, P., Ferguson, D.P.S., Gao, Y., Gonzalez, S., Hayes, O.J., Hu, H., Jin, S., Kile, J., McNamara, P.A., III, Nielsen, J., Orejudos, W., Pan, Y.B., Saadi, Y., Scott, I.J., Walsh, J., Wu, Sau Lan, Wu, X., Zobernig, G.
Lenguaje:eng
Publicado: 2000
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(00)01093-5
http://cds.cern.ch/record/450374
_version_ 1780896118831316992
author Barate, R.
Decamp, D.
Ghez, Philippe
Goy, C.
Lees, J.P.
Merle, E.
Minard, M.N.
Pietrzyk, B.
Bravo, S.
Casado, M.P.
Chmeissani, M.
Crespo, J.M.
Fernandez, E.
Fernandez-Bosman, M.
Garrido, Ll.
Grauges, E.
Martinez, M.
Merino, G.
Miquel, R.
Mir, Ll.M.
Pacheco, A.
Ruiz, H.
Colaleo, A.
Creanza, D.
de Palma, M.
Iaselli, G.
Maggi, G.
Maggi, M.
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.
Xu, R.
Xue, S.
Zhang, J.
Zhang, L.
Zhao, W.
Abbaneo, D.
Boix, G.
Buchmuller, O.
Cattaneo, M.
Cerutti, F.
Dissertori, G.
Drevermann, H.
Forty, R.W.
Frank, M.
Greening, T.C.
Hansen, J.B.
Harvey, John
Janot, P.
Jost, B.
Lehraus, I.
Mato, P.
Minten, A.
Moutoussi, A.
Ranjard, F.
Rolandi, Gigi
Schlatter, D.
Schmitt, M.
Schneider, O.
Spagnolo, P.
Tejessy, W.
Teubert, F.
Tournefier, E.
Wright, A.E.
Ajaltouni, Z.
Badaud, F.
Chazelle, G.
Deschamps, O.
Falvard, A.
Gay, P.
Guicheney, C.
Henrard, P.
Jousset, J.
Michel, B.
Monteil, S.
Montret, J.C.
Pallin, D.
Perret, P.
Podlyski, F.
Hansen, J.D.
Hansen, J.R.
Hansen, P.H.
Nilsson, B.S.
Waananen, A.
Daskalakis, G.
Kyriakis, A.
Markou, C.
Simopoulou, E.
Vayaki, A.
Blondel, A.
Bonneaud, G.
Brient, J.C.
Rouge, A.
Rumpf, M.
Swynghedauw, M.
Verderi, M.
Videau, H.
Focardi, E.
Parrini, G.
Zachariadou, K.
Antonelli, A.
Antonelli, M.
Bencivenni, G.
Bologna, G.
Bossi, F.
Campana, P.
Capon, G.
Chiarella, V.
Laurelli, P.
Mannocchi, G.
Murtas, F.
Murtas, G.P.
Passalacqua, L.
Pepe-Altarelli, M.
Halley, A.W.
Lynch, J.G.
Negus, P.
O'Shea, V.
Raine, C.
Teixeira-Dias, P.
Thompson, A.S.
Cavanaugh, R.
Dhamotharan, S.
Geweniger, C.
Hanke, P.
Hansper, G.
Hepp, V.
Kluge, E.E.
Putzer, A.
Sommer, J.
Tittel, K.
Werner, S.
Wunsch, M.
Beuselinck, R.
Binnie, D.M.
Cameron, W.
Dornan, P.J.
Girone, M.
Marinelli, N.
Sedgbeer, J.K.
Thompson, J.C.
Thomson, Evelyn J.
Ghete, V.M.
Girtler, P.
Kneringer, E.
Kuhn, D.
Rudolph, G.
Bowdery, C.K.
Buck, P.G.
Finch, A.J.
Foster, F.
Hughes, G.
Jones, R.W.L.
Robertson, N.A.
Giehl, I.
Jakobs, K.
Kleinknecht, K.
Quast, G.
Renk, B.
Rohne, E.
Sander, H.G.
Wachsmuth, H.
Zeitnitz, C.
Bonissent, A.
Carr, J.
Coyle, P.
Leroy, O.
Payre, P.
Rousseau, D.
Talby, M.
Aleppo, M.
Ragusa, F.
Dietl, H.
Ganis, G.
Heister, A.
Huttmann, K.
Lutjens, G.
Mannert, C.
Manner, W.
Moser, H.G.
Schael, S.
Settles, R.
Stenzel, H.
Wiedenmann, W.
Wolf, G.
Azzurri, P.
Boucrot, J.
Callot, O.
Chen, S.
Cordier, A.
Davier, M.
Duflot, L.
Grivaz, J.F.
Heusse, Ph.
Jacholkowska, A.
Le Diberder, F.
Lefrancois, J.
Lutz, A.M.
Schune, M.H.
Veillet, J.J.
Videau, I.
Yuan, C.
Zerwas, D.
Bagliesi, Giuseppe
Boccali, T.
Calderini, G.
Ciulli, V.
Foa, L.
Giassi, A.
Ligabue, F.
Messineo, A.
Palla, F.
Rizzo, G.
Sanguinetti, G.
Sciaba, A.
Sguazzoni, G.
Tenchini, R.
Venturi, A.
Verdini, P.G.
Blair, G.A.
Cowan, G.
Green, M.G.
Medcalf, T.
Strong, J.A.
von Wimmersperg-Toeller, J.H.
Clifft, R.W.
Edgecock, T.R.
Norton, P.R.
Tomalin, I.R.
Bloch-Devaux, Brigitte
Colas, P.
Emery, S.
Kozanecki, W.
Lancon, E.
Lemaire, M.C.
Locci, E.
Perez, P.
Rander, J.
Renardy, J.F.
Roussarie, A.
Schuller, J.P.
Schwindling, J.
Trabelsi, A.
Vallage, B.
Black, S.N.
Dann, J.H.
Johnson, R.P.
Kim, H.Y.
Konstantinidis, N.
Litke, A.M.
McNeil, M.A.
Taylor, G.
Booth, C.N.
Cartwright, S.
Combley, F.
Lehto, M.
Thompson, L.F.
Affholderbach, K.
Boehrer, Armin
Brandt, S.
Grupen, C.
Misiejuk, A.
Prange, G.
Sieler, U.
Giannini, G.
Gobbo, B.
Rothberg, J.
Wasserbaech, S.
Armstrong, S.R.
Cranmer, K.
Elmer, P.
Ferguson, D.P.S.
Gao, Y.
Gonzalez, S.
Hayes, O.J.
Hu, H.
Jin, S.
Kile, J.
McNamara, P.A., III
Nielsen, J.
Orejudos, W.
Pan, Y.B.
Saadi, Y.
Scott, I.J.
Walsh, J.
Wu, Sau Lan
Wu, X.
Zobernig, G.
author_facet Barate, R.
Decamp, D.
Ghez, Philippe
Goy, C.
Lees, J.P.
Merle, E.
Minard, M.N.
Pietrzyk, B.
Bravo, S.
Casado, M.P.
Chmeissani, M.
Crespo, J.M.
Fernandez, E.
Fernandez-Bosman, M.
Garrido, Ll.
Grauges, E.
Martinez, M.
Merino, G.
Miquel, R.
Mir, Ll.M.
Pacheco, A.
Ruiz, H.
Colaleo, A.
Creanza, D.
de Palma, M.
Iaselli, G.
Maggi, G.
Maggi, M.
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.
Xu, R.
Xue, S.
Zhang, J.
Zhang, L.
Zhao, W.
Abbaneo, D.
Boix, G.
Buchmuller, O.
Cattaneo, M.
Cerutti, F.
Dissertori, G.
Drevermann, H.
Forty, R.W.
Frank, M.
Greening, T.C.
Hansen, J.B.
Harvey, John
Janot, P.
Jost, B.
Lehraus, I.
Mato, P.
Minten, A.
Moutoussi, A.
Ranjard, F.
Rolandi, Gigi
Schlatter, D.
Schmitt, M.
Schneider, O.
Spagnolo, P.
Tejessy, W.
Teubert, F.
Tournefier, E.
Wright, A.E.
Ajaltouni, Z.
Badaud, F.
Chazelle, G.
Deschamps, O.
Falvard, A.
Gay, P.
Guicheney, C.
Henrard, P.
Jousset, J.
Michel, B.
Monteil, S.
Montret, J.C.
Pallin, D.
Perret, P.
Podlyski, F.
Hansen, J.D.
Hansen, J.R.
Hansen, P.H.
Nilsson, B.S.
Waananen, A.
Daskalakis, G.
Kyriakis, A.
Markou, C.
Simopoulou, E.
Vayaki, A.
Blondel, A.
Bonneaud, G.
Brient, J.C.
Rouge, A.
Rumpf, M.
Swynghedauw, M.
Verderi, M.
Videau, H.
Focardi, E.
Parrini, G.
Zachariadou, K.
Antonelli, A.
Antonelli, M.
Bencivenni, G.
Bologna, G.
Bossi, F.
Campana, P.
Capon, G.
Chiarella, V.
Laurelli, P.
Mannocchi, G.
Murtas, F.
Murtas, G.P.
Passalacqua, L.
Pepe-Altarelli, M.
Halley, A.W.
Lynch, J.G.
Negus, P.
O'Shea, V.
Raine, C.
Teixeira-Dias, P.
Thompson, A.S.
Cavanaugh, R.
Dhamotharan, S.
Geweniger, C.
Hanke, P.
Hansper, G.
Hepp, V.
Kluge, E.E.
Putzer, A.
Sommer, J.
Tittel, K.
Werner, S.
Wunsch, M.
Beuselinck, R.
Binnie, D.M.
Cameron, W.
Dornan, P.J.
Girone, M.
Marinelli, N.
Sedgbeer, J.K.
Thompson, J.C.
Thomson, Evelyn J.
Ghete, V.M.
Girtler, P.
Kneringer, E.
Kuhn, D.
Rudolph, G.
Bowdery, C.K.
Buck, P.G.
Finch, A.J.
Foster, F.
Hughes, G.
Jones, R.W.L.
Robertson, N.A.
Giehl, I.
Jakobs, K.
Kleinknecht, K.
Quast, G.
Renk, B.
Rohne, E.
Sander, H.G.
Wachsmuth, H.
Zeitnitz, C.
Bonissent, A.
Carr, J.
Coyle, P.
Leroy, O.
Payre, P.
Rousseau, D.
Talby, M.
Aleppo, M.
Ragusa, F.
Dietl, H.
Ganis, G.
Heister, A.
Huttmann, K.
Lutjens, G.
Mannert, C.
Manner, W.
Moser, H.G.
Schael, S.
Settles, R.
Stenzel, H.
Wiedenmann, W.
Wolf, G.
Azzurri, P.
Boucrot, J.
Callot, O.
Chen, S.
Cordier, A.
Davier, M.
Duflot, L.
Grivaz, J.F.
Heusse, Ph.
Jacholkowska, A.
Le Diberder, F.
Lefrancois, J.
Lutz, A.M.
Schune, M.H.
Veillet, J.J.
Videau, I.
Yuan, C.
Zerwas, D.
Bagliesi, Giuseppe
Boccali, T.
Calderini, G.
Ciulli, V.
Foa, L.
Giassi, A.
Ligabue, F.
Messineo, A.
Palla, F.
Rizzo, G.
Sanguinetti, G.
Sciaba, A.
Sguazzoni, G.
Tenchini, R.
Venturi, A.
Verdini, P.G.
Blair, G.A.
Cowan, G.
Green, M.G.
Medcalf, T.
Strong, J.A.
von Wimmersperg-Toeller, J.H.
Clifft, R.W.
Edgecock, T.R.
Norton, P.R.
Tomalin, I.R.
Bloch-Devaux, Brigitte
Colas, P.
Emery, S.
Kozanecki, W.
Lancon, E.
Lemaire, M.C.
Locci, E.
Perez, P.
Rander, J.
Renardy, J.F.
Roussarie, A.
Schuller, J.P.
Schwindling, J.
Trabelsi, A.
Vallage, B.
Black, S.N.
Dann, J.H.
Johnson, R.P.
Kim, H.Y.
Konstantinidis, N.
Litke, A.M.
McNeil, M.A.
Taylor, G.
Booth, C.N.
Cartwright, S.
Combley, F.
Lehto, M.
Thompson, L.F.
Affholderbach, K.
Boehrer, Armin
Brandt, S.
Grupen, C.
Misiejuk, A.
Prange, G.
Sieler, U.
Giannini, G.
Gobbo, B.
Rothberg, J.
Wasserbaech, S.
Armstrong, S.R.
Cranmer, K.
Elmer, P.
Ferguson, D.P.S.
Gao, Y.
Gonzalez, S.
Hayes, O.J.
Hu, H.
Jin, S.
Kile, J.
McNamara, P.A., III
Nielsen, J.
Orejudos, W.
Pan, Y.B.
Saadi, Y.
Scott, I.J.
Walsh, J.
Wu, Sau Lan
Wu, X.
Zobernig, G.
author_sort Barate, R.
collection CERN
description The lifetimes of the B0 and B- mesons are measured using a sample of about four million hadronic Z decays collected from 1991 to 19 95 with the ALEPH detector at LEP. The data sample has been recently reprocessed, achieving a substantial improvement in the tracking performance. Semileptonic decays of B0 and B- mesons are partially reconstructed by identifying events containing a lepton with an associated D* or D0 meson. The proper time of the B meson is estimated from the measured decay length and the momentum of the D-lepton system. A fit to the proper time of 1880 D* l- and 2856 D0 l- candidates yields the following results: tau B0 = 1.518 +- 0.053 +- 0.034 ps, tau B- = 1.648 +- 0.049 +- 0.035 ps, tau B- / tau B0 = 1.085 +- 0.059 +- 0.018.
id cern-450374
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2000
record_format invenio
spelling cern-4503742023-03-14T17:59:04Zdoi:10.1016/S0370-2693(00)01093-5http://cds.cern.ch/record/450374engBarate, R.Decamp, D.Ghez, PhilippeGoy, C.Lees, J.P.Merle, E.Minard, M.N.Pietrzyk, B.Bravo, S.Casado, M.P.Chmeissani, M.Crespo, J.M.Fernandez, E.Fernandez-Bosman, M.Garrido, Ll.Grauges, E.Martinez, M.Merino, G.Miquel, R.Mir, Ll.M.Pacheco, A.Ruiz, H.Colaleo, A.Creanza, D.de Palma, M.Iaselli, G.Maggi, G.Maggi, M.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.Xu, R.Xue, S.Zhang, J.Zhang, L.Zhao, W.Abbaneo, D.Boix, G.Buchmuller, O.Cattaneo, M.Cerutti, F.Dissertori, G.Drevermann, H.Forty, R.W.Frank, M.Greening, T.C.Hansen, J.B.Harvey, JohnJanot, P.Jost, B.Lehraus, I.Mato, P.Minten, A.Moutoussi, A.Ranjard, F.Rolandi, GigiSchlatter, D.Schmitt, M.Schneider, O.Spagnolo, P.Tejessy, W.Teubert, F.Tournefier, E.Wright, A.E.Ajaltouni, Z.Badaud, F.Chazelle, G.Deschamps, O.Falvard, A.Gay, P.Guicheney, C.Henrard, P.Jousset, J.Michel, B.Monteil, S.Montret, J.C.Pallin, D.Perret, P.Podlyski, F.Hansen, J.D.Hansen, J.R.Hansen, P.H.Nilsson, B.S.Waananen, A.Daskalakis, G.Kyriakis, A.Markou, C.Simopoulou, E.Vayaki, A.Blondel, A.Bonneaud, G.Brient, J.C.Rouge, A.Rumpf, M.Swynghedauw, M.Verderi, M.Videau, H.Focardi, E.Parrini, G.Zachariadou, K.Antonelli, A.Antonelli, M.Bencivenni, G.Bologna, G.Bossi, F.Campana, P.Capon, G.Chiarella, V.Laurelli, P.Mannocchi, G.Murtas, F.Murtas, G.P.Passalacqua, L.Pepe-Altarelli, M.Halley, A.W.Lynch, J.G.Negus, P.O'Shea, V.Raine, C.Teixeira-Dias, P.Thompson, A.S.Cavanaugh, R.Dhamotharan, S.Geweniger, C.Hanke, P.Hansper, G.Hepp, V.Kluge, E.E.Putzer, A.Sommer, J.Tittel, K.Werner, S.Wunsch, M.Beuselinck, R.Binnie, D.M.Cameron, W.Dornan, P.J.Girone, M.Marinelli, N.Sedgbeer, J.K.Thompson, J.C.Thomson, Evelyn J.Ghete, V.M.Girtler, P.Kneringer, E.Kuhn, D.Rudolph, G.Bowdery, C.K.Buck, P.G.Finch, A.J.Foster, F.Hughes, G.Jones, R.W.L.Robertson, N.A.Giehl, I.Jakobs, K.Kleinknecht, K.Quast, G.Renk, B.Rohne, E.Sander, H.G.Wachsmuth, H.Zeitnitz, C.Bonissent, A.Carr, J.Coyle, P.Leroy, O.Payre, P.Rousseau, D.Talby, M.Aleppo, M.Ragusa, F.Dietl, H.Ganis, G.Heister, A.Huttmann, K.Lutjens, G.Mannert, C.Manner, W.Moser, H.G.Schael, S.Settles, R.Stenzel, H.Wiedenmann, W.Wolf, G.Azzurri, P.Boucrot, J.Callot, O.Chen, S.Cordier, A.Davier, M.Duflot, L.Grivaz, J.F.Heusse, Ph.Jacholkowska, A.Le Diberder, F.Lefrancois, J.Lutz, A.M.Schune, M.H.Veillet, J.J.Videau, I.Yuan, C.Zerwas, D.Bagliesi, GiuseppeBoccali, T.Calderini, G.Ciulli, V.Foa, L.Giassi, A.Ligabue, F.Messineo, A.Palla, F.Rizzo, G.Sanguinetti, G.Sciaba, A.Sguazzoni, G.Tenchini, R.Venturi, A.Verdini, P.G.Blair, G.A.Cowan, G.Green, M.G.Medcalf, T.Strong, J.A.von Wimmersperg-Toeller, J.H.Clifft, R.W.Edgecock, T.R.Norton, P.R.Tomalin, I.R.Bloch-Devaux, BrigitteColas, P.Emery, S.Kozanecki, W.Lancon, E.Lemaire, M.C.Locci, E.Perez, P.Rander, J.Renardy, J.F.Roussarie, A.Schuller, J.P.Schwindling, J.Trabelsi, A.Vallage, B.Black, S.N.Dann, J.H.Johnson, R.P.Kim, H.Y.Konstantinidis, N.Litke, A.M.McNeil, M.A.Taylor, G.Booth, C.N.Cartwright, S.Combley, F.Lehto, M.Thompson, L.F.Affholderbach, K.Boehrer, ArminBrandt, S.Grupen, C.Misiejuk, A.Prange, G.Sieler, U.Giannini, G.Gobbo, B.Rothberg, J.Wasserbaech, S.Armstrong, S.R.Cranmer, K.Elmer, P.Ferguson, D.P.S.Gao, Y.Gonzalez, S.Hayes, O.J.Hu, H.Jin, S.Kile, J.McNamara, P.A., IIINielsen, J.Orejudos, W.Pan, Y.B.Saadi, Y.Scott, I.J.Walsh, J.Wu, Sau LanWu, X.Zobernig, G.Measurement of the $\bar{B}^{0}$ and $B^{-}$ Meson LifetimesParticle Physics - ExperimentThe lifetimes of the B0 and B- mesons are measured using a sample of about four million hadronic Z decays collected from 1991 to 19 95 with the ALEPH detector at LEP. The data sample has been recently reprocessed, achieving a substantial improvement in the tracking performance. Semileptonic decays of B0 and B- mesons are partially reconstructed by identifying events containing a lepton with an associated D* or D0 meson. The proper time of the B meson is estimated from the measured decay length and the momentum of the D-lepton system. A fit to the proper time of 1880 D* l- and 2856 D0 l- candidates yields the following results: tau B0 = 1.518 +- 0.053 +- 0.034 ps, tau B- = 1.648 +- 0.049 +- 0.035 ps, tau B- / tau B0 = 1.085 +- 0.059 +- 0.018.The lifetimes of the B 0 and B − mesons are measured using a sample of about four million hadronic Z decays collected from 1991 to 1995 with the Aleph detector at LEP. The data sample has been recently reprocessed, achieving a substantial improvement in the tracking performance. Semileptonic decays of B 0 and B − mesons are partially reconstructed by identifying events containing a lepton with an associated D ★+ or D 0 meson. The proper time of the B meson is estimated from the measured decay length and the momentum of the D -lepton system. A fit to the proper time of 1880 D ★+ ℓ − and 2856 D 0 ℓ − candidates yields the following results: τ B 0 =1.518±0.053±0.034  ps , τ B − =1.648±0.049±0.035 ps, τ B − /τ B 0 =1.085±0.059±0.018 .The lifetimes of the Bbar0 and B- mesons are measured using a sample of about four million hadronic Z decays collected from 1991 to 1995 with the ALEPH detector at LEP. The data sample has been recently reprocessed, achieving a substantial improvement in the tracking performance. Semileptonic decays of Bbar0 and b- mesons are partially reconstructed by identifying events containing a lepton with an associated D*+ or D0 meson. The proper time of the B meson is estimated from the measured decay length and the momentum of the D-lepton system. A fit to the proper time of 1880 D*+l- and 2856 D0l- candidates yields the following results: tauBbar0 = 1.518 +- 0.053 +- 0.034 ps, tauB = 1.648 +- 0.049 +- 0.035 ps, tauB-/tauBbar0 = 1.085 +- 0.059 +- 0.018.hep-ex/0008016CERN-EP-2000-106CERN-EP-2000-106oai:cds.cern.ch:4503742000-08-03
spellingShingle Particle Physics - Experiment
Barate, R.
Decamp, D.
Ghez, Philippe
Goy, C.
Lees, J.P.
Merle, E.
Minard, M.N.
Pietrzyk, B.
Bravo, S.
Casado, M.P.
Chmeissani, M.
Crespo, J.M.
Fernandez, E.
Fernandez-Bosman, M.
Garrido, Ll.
Grauges, E.
Martinez, M.
Merino, G.
Miquel, R.
Mir, Ll.M.
Pacheco, A.
Ruiz, H.
Colaleo, A.
Creanza, D.
de Palma, M.
Iaselli, G.
Maggi, G.
Maggi, M.
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.
Xu, R.
Xue, S.
Zhang, J.
Zhang, L.
Zhao, W.
Abbaneo, D.
Boix, G.
Buchmuller, O.
Cattaneo, M.
Cerutti, F.
Dissertori, G.
Drevermann, H.
Forty, R.W.
Frank, M.
Greening, T.C.
Hansen, J.B.
Harvey, John
Janot, P.
Jost, B.
Lehraus, I.
Mato, P.
Minten, A.
Moutoussi, A.
Ranjard, F.
Rolandi, Gigi
Schlatter, D.
Schmitt, M.
Schneider, O.
Spagnolo, P.
Tejessy, W.
Teubert, F.
Tournefier, E.
Wright, A.E.
Ajaltouni, Z.
Badaud, F.
Chazelle, G.
Deschamps, O.
Falvard, A.
Gay, P.
Guicheney, C.
Henrard, P.
Jousset, J.
Michel, B.
Monteil, S.
Montret, J.C.
Pallin, D.
Perret, P.
Podlyski, F.
Hansen, J.D.
Hansen, J.R.
Hansen, P.H.
Nilsson, B.S.
Waananen, A.
Daskalakis, G.
Kyriakis, A.
Markou, C.
Simopoulou, E.
Vayaki, A.
Blondel, A.
Bonneaud, G.
Brient, J.C.
Rouge, A.
Rumpf, M.
Swynghedauw, M.
Verderi, M.
Videau, H.
Focardi, E.
Parrini, G.
Zachariadou, K.
Antonelli, A.
Antonelli, M.
Bencivenni, G.
Bologna, G.
Bossi, F.
Campana, P.
Capon, G.
Chiarella, V.
Laurelli, P.
Mannocchi, G.
Murtas, F.
Murtas, G.P.
Passalacqua, L.
Pepe-Altarelli, M.
Halley, A.W.
Lynch, J.G.
Negus, P.
O'Shea, V.
Raine, C.
Teixeira-Dias, P.
Thompson, A.S.
Cavanaugh, R.
Dhamotharan, S.
Geweniger, C.
Hanke, P.
Hansper, G.
Hepp, V.
Kluge, E.E.
Putzer, A.
Sommer, J.
Tittel, K.
Werner, S.
Wunsch, M.
Beuselinck, R.
Binnie, D.M.
Cameron, W.
Dornan, P.J.
Girone, M.
Marinelli, N.
Sedgbeer, J.K.
Thompson, J.C.
Thomson, Evelyn J.
Ghete, V.M.
Girtler, P.
Kneringer, E.
Kuhn, D.
Rudolph, G.
Bowdery, C.K.
Buck, P.G.
Finch, A.J.
Foster, F.
Hughes, G.
Jones, R.W.L.
Robertson, N.A.
Giehl, I.
Jakobs, K.
Kleinknecht, K.
Quast, G.
Renk, B.
Rohne, E.
Sander, H.G.
Wachsmuth, H.
Zeitnitz, C.
Bonissent, A.
Carr, J.
Coyle, P.
Leroy, O.
Payre, P.
Rousseau, D.
Talby, M.
Aleppo, M.
Ragusa, F.
Dietl, H.
Ganis, G.
Heister, A.
Huttmann, K.
Lutjens, G.
Mannert, C.
Manner, W.
Moser, H.G.
Schael, S.
Settles, R.
Stenzel, H.
Wiedenmann, W.
Wolf, G.
Azzurri, P.
Boucrot, J.
Callot, O.
Chen, S.
Cordier, A.
Davier, M.
Duflot, L.
Grivaz, J.F.
Heusse, Ph.
Jacholkowska, A.
Le Diberder, F.
Lefrancois, J.
Lutz, A.M.
Schune, M.H.
Veillet, J.J.
Videau, I.
Yuan, C.
Zerwas, D.
Bagliesi, Giuseppe
Boccali, T.
Calderini, G.
Ciulli, V.
Foa, L.
Giassi, A.
Ligabue, F.
Messineo, A.
Palla, F.
Rizzo, G.
Sanguinetti, G.
Sciaba, A.
Sguazzoni, G.
Tenchini, R.
Venturi, A.
Verdini, P.G.
Blair, G.A.
Cowan, G.
Green, M.G.
Medcalf, T.
Strong, J.A.
von Wimmersperg-Toeller, J.H.
Clifft, R.W.
Edgecock, T.R.
Norton, P.R.
Tomalin, I.R.
Bloch-Devaux, Brigitte
Colas, P.
Emery, S.
Kozanecki, W.
Lancon, E.
Lemaire, M.C.
Locci, E.
Perez, P.
Rander, J.
Renardy, J.F.
Roussarie, A.
Schuller, J.P.
Schwindling, J.
Trabelsi, A.
Vallage, B.
Black, S.N.
Dann, J.H.
Johnson, R.P.
Kim, H.Y.
Konstantinidis, N.
Litke, A.M.
McNeil, M.A.
Taylor, G.
Booth, C.N.
Cartwright, S.
Combley, F.
Lehto, M.
Thompson, L.F.
Affholderbach, K.
Boehrer, Armin
Brandt, S.
Grupen, C.
Misiejuk, A.
Prange, G.
Sieler, U.
Giannini, G.
Gobbo, B.
Rothberg, J.
Wasserbaech, S.
Armstrong, S.R.
Cranmer, K.
Elmer, P.
Ferguson, D.P.S.
Gao, Y.
Gonzalez, S.
Hayes, O.J.
Hu, H.
Jin, S.
Kile, J.
McNamara, P.A., III
Nielsen, J.
Orejudos, W.
Pan, Y.B.
Saadi, Y.
Scott, I.J.
Walsh, J.
Wu, Sau Lan
Wu, X.
Zobernig, G.
Measurement of the $\bar{B}^{0}$ and $B^{-}$ Meson Lifetimes
title Measurement of the $\bar{B}^{0}$ and $B^{-}$ Meson Lifetimes
title_full Measurement of the $\bar{B}^{0}$ and $B^{-}$ Meson Lifetimes
title_fullStr Measurement of the $\bar{B}^{0}$ and $B^{-}$ Meson Lifetimes
title_full_unstemmed Measurement of the $\bar{B}^{0}$ and $B^{-}$ Meson Lifetimes
title_short Measurement of the $\bar{B}^{0}$ and $B^{-}$ Meson Lifetimes
title_sort measurement of the $\bar{b}^{0}$ and $b^{-}$ meson lifetimes
topic Particle Physics - Experiment
url https://dx.doi.org/10.1016/S0370-2693(00)01093-5
http://cds.cern.ch/record/450374
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