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Study of the CP asymmetry of $B^{0} \rightarrow J/\psi K^{0}_{s}$ decays in ALEPH

The decay B0 -> J/psi K0_S is reconstructed with J/psi -> e+ e- or mu+ mu- and K0_S -> pi+ pi-. From the full ALEPH dataset at LEP1 of about 4 million hadronic Z decays, 23 candidates are selected with an estimated purity of 71%. They are used to measure the CP asymmetry of this decay, give...

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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, L., Grauges, E., Martinez, M., Merino, G., Miquel, R., Mir, L.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., Petersen, B.A., 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, P., 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., 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., Nielsen, J., Orejudos, W., Pan, Y.B., Saadi, Y., Scott, I.J., Walsh, J., Wu, S.L., Wu, X., Zobernig, G.
Lenguaje:	eng
Publicado:	2000
Materias:	Particle Physics - Experiment
Acceso en línea:	https://dx.doi.org/10.1016/S0370-2693(00)01091-1 http://cds.cern.ch/record/458487

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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, L. Grauges, E. Martinez, M. Merino, G. Miquel, R. Mir, L.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. Petersen, B.A. 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, P. 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. 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. Nielsen, J. Orejudos, W. Pan, Y.B. Saadi, Y. Scott, I.J. Walsh, J. Wu, S.L. 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, L. Grauges, E. Martinez, M. Merino, G. Miquel, R. Mir, L.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. Petersen, B.A. 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, P. 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. 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. Nielsen, J. Orejudos, W. Pan, Y.B. Saadi, Y. Scott, I.J. Walsh, J. Wu, S.L. Wu, X. Zobernig, G.
author_sort	Barate, R.
collection	CERN
description	The decay B0 -> J/psi K0_S is reconstructed with J/psi -> e+ e- or mu+ mu- and K0_S -> pi+ pi-. From the full ALEPH dataset at LEP1 of about 4 million hadronic Z decays, 23 candidates are selected with an estimated purity of 71%. They are used to measure the CP asymmetry of this decay, given by sin 2beta in the Standard Model, with the result sin 2beta = 0.84 +0.82-1.04 +-0.16. This is combined with existing measurements from other experiments, and increases the confidence level that CP violation has been observed in this channel to 98%.
id	cern-458487
institution	Organización Europea para la Investigación Nuclear
language	eng
publishDate	2000
record_format	invenio
spelling	cern-4584872023-03-14T17:08:58Zdoi:10.1016/S0370-2693(00)01091-1http://cds.cern.ch/record/458487engBarate, 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, L.Grauges, E.Martinez, M.Merino, G.Miquel, R.Mir, L.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.Petersen, B.A.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, P.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.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.Nielsen, J.Orejudos, W.Pan, Y.B.Saadi, Y.Scott, I.J.Walsh, J.Wu, S.L.Wu, X.Zobernig, G.Study of the CP asymmetry of $B^{0} \rightarrow J/\psi K^{0}_{s}$ decays in ALEPHParticle Physics - ExperimentThe decay B0 -> J/psi K0_S is reconstructed with J/psi -> e+ e- or mu+ mu- and K0_S -> pi+ pi-. From the full ALEPH dataset at LEP1 of about 4 million hadronic Z decays, 23 candidates are selected with an estimated purity of 71%. They are used to measure the CP asymmetry of this decay, given by sin 2beta in the Standard Model, with the result sin 2beta = 0.84 +0.82-1.04 +-0.16. This is combined with existing measurements from other experiments, and increases the confidence level that CP violation has been observed in this channel to 98%.The decay B 0 → J /ψ K 0 S is reconstructed with J/ ψ →e + e − or μ + μ − and K 0 S → π + π − . From the full ALEPH dataset at LEP1 of about 4 million hadronic Z decays, 23 candidates are selected with an estimated purity of 71%. They are used to measure the CP asymmetry of this decay, given by sin2 β in the Standard Model, with the result sin 2β=0.84 +0.82 −1.04 ±0.16 . This is combined with existing measurements from other experiments, and increases the confidence level that CP violation has been observed in this channel to 98%.The decay B0 -> J/psi K0_S is reconstructed with J/psi -> e+ e- or mu+ mu- and K0_S -> pi+ pi-. From the full ALEPH dataset at LEP1 of about 4 million hadronic Z decays, 23 candidates are selected with an estimated purity of 71%. They are used to measure the CP asymmetry of this decay, given by sin 2beta in the Standard Model, with the result sin 2beta = 0.84 +0.82-1.04 +-0.16. This is combined with existing measurements from other experiments, and increases the confidence level that CP violation has been observed in this channel to 98%.hep-ex/0009058CERN-EP-2000-119CERN-ALEPH-99-099CERN-EP-2000-119oai:cds.cern.ch:4584872000-09-08
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, L. Grauges, E. Martinez, M. Merino, G. Miquel, R. Mir, L.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. Petersen, B.A. 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, P. 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. 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. Nielsen, J. Orejudos, W. Pan, Y.B. Saadi, Y. Scott, I.J. Walsh, J. Wu, S.L. Wu, X. Zobernig, G. Study of the CP asymmetry of $B^{0} \rightarrow J/\psi K^{0}_{s}$ decays in ALEPH
title	Study of the CP asymmetry of $B^{0} \rightarrow J/\psi K^{0}_{s}$ decays in ALEPH
title_full	Study of the CP asymmetry of $B^{0} \rightarrow J/\psi K^{0}_{s}$ decays in ALEPH
title_fullStr	Study of the CP asymmetry of $B^{0} \rightarrow J/\psi K^{0}_{s}$ decays in ALEPH
title_full_unstemmed	Study of the CP asymmetry of $B^{0} \rightarrow J/\psi K^{0}_{s}$ decays in ALEPH
title_short	Study of the CP asymmetry of $B^{0} \rightarrow J/\psi K^{0}_{s}$ decays in ALEPH
title_sort	study of the cp asymmetry of $b^{0} \rightarrow j/\psi k^{0}_{s}$ decays in aleph
topic	Particle Physics - Experiment
url	https://dx.doi.org/10.1016/S0370-2693(00)01091-1 http://cds.cern.ch/record/458487
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studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT chens studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT cordiera studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT davierm studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT duflotl studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT grivazjf studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT heussep studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT jacholkowskaa studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT lediberderf studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT lefrancoisj studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT lutzam studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT schunemh studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT veilletjj studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT videaui studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT yuanc studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT zerwasd studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT bagliesigiuseppe studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT boccalit studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT calderinig studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT ciulliv studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT foal studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT giassia studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT ligabuef studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT messineoa studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT pallaf studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT sanguinettig studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT sciabaa studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT sguazzonig studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT tenchinir studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT venturia studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT verdinipg studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT blairga studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT cowang studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT greenmg studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT medcalft studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT strongja studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT vonwimmerspergtoellerjh studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT clifftrw studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT edgecocktr studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT nortonpr studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT tomalinir studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT blochdevauxbrigitte studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT colasp studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT emerys studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT kozaneckiw studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT lancone studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT lemairemc studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT loccie studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT perezp studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT randerj studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT renardyjf studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT roussariea studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT schullerjp studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT schwindlingj studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT trabelsia studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT vallageb studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT blacksn studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT dannjh studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT johnsonrp studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT kimhy studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT konstantinidisn studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT litkeam studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT mcneilma studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT taylorg studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT boothcn studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT cartwrights studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT combleyf studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT lehtom studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT thompsonlf studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT affholderbachk studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT boehrerarmin studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT brandts studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT grupenc studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT misiejuka studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT prangeg studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT sieleru studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT gianninig studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT gobbob studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT rothbergj studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT wasserbaechs studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT armstrongsr studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT cranmerk studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT elmerp studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT fergusondps studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT gaoy studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT gonzalezs studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT hayesoj studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT huh studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT jins studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT kilej studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT mcnamarapa studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT nielsenj studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT orejudosw studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT panyb studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT saadiy studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT scottij studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT walshj studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT wusl studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT wux studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph AT zobernigg studyofthecpasymmetryofb0rightarrowjpsik0sdecaysinaleph

Study of the CP asymmetry of $B^{0} \rightarrow J/\psi K^{0}_{s}$ decays in ALEPH

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