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Study of $D^{0}-\overline{D}^{0}$ mixing and $D^{0}$ doubly-Cabibbo-suppressed decays
Using a sample of four million hadronic Z events collected in ALEPH from 1991 to 1995, the decays D^{*+} --> D^0 pi_{s}^+, with D^0 decaying to K^- pi^+ or to K^+ pi^-, are studied. The relative br anching ratio $B(\D^0 \to \K^+ \pi^-) / B(\D^0 \to \K^- \pi^+)$ is measured to be ( 1.84 \pm 0.59(\...
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Lenguaje: | eng |
Publicado: |
1998
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1016/S0370-2693(98)00946-0 http://cds.cern.ch/record/361255 |
_version_ | 1780892695468703744 |
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author | Barate, R. Buskulic, D. Decamp, D. Ghez, Philippe Goy, C. Lees, J.P. Lucotte, A. Merle, E. Minard, M.N. Nief, J.Y. Pietrzyk, B. Alemany, R. Boix, G. Casado, M.P. Chmeissani, M. Crespo, J.M. Delfino, M. Fernandez, E. Fernandez-Bosman, M. Garrido, L. Grauges, E. Juste, A. Martinez, M. Merino, G. Miquel, R. Mir, L.M. Park, I.C. Pascual, A. Riu, I. Sanchez, F. Colaleo, A. Creanza, D. De Palma, M. Gelao, G. 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. Becker, U. Bright-Thomas, P. Casper, D. Cattaneo, M. Cerutti, F. Ciulli, V. Dissertori, G. Drevermann, H. Forty, R.W. Frank, M. Hagelberg, R. Halley, A.W. Hansen, J.B. Harvey, John Janot, P. Jost, B. Lehraus, I. Mato, P. Minten, A. Moneta, L. Pacheco, A. Ranjard, F. Rolandi, Gigi Rousseau, D. Schlatter, D. Schmitt, M. Schneider, O. Tejessy, W. Teubert, F. Tomalin, I.R. Wachsmuth, H. 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, J.C. Pallin, D. Perret, P. Podlyski, F. Proriol, J. Rosnet, P. Hansen, J.D. Hansen, J.R. Hansen, P.H. Nilsson, B.S. Rensch, B. Waananen, A. Daskalakis, G. Kyriakis, A. Markou, C. Simopoulou, E. Siotis, I. Vayaki, A. Blondel, A. Bonneaud, G. Brient, J.C. Bourdon, P. Rouge, A. Rumpf, M. Valassi, A. Verderi, M. Videau, H. Focardi, E. Parrini, G. Zachariadou, K. Corden, M. Georgiopoulos, C. Jaffe, D.E. Antonelli, A. Bencivenni, G. Bologna, G. Bossi, F. Campana, P. Capon, G. Chiarella, V. Felici, G. Laurelli, P. Mannocchi, G. Murtas, F. Murtas, G.P. Passalacqua, L. Pepe-Altarelli, M. Curtis, L. Lynch, J.G. Negus, P. O'Shea, V. Raine, C. Scarr, J.M. Smith, K. Teixeira-Dias, P. Thompson, A.S. Thomson, Evelyn J. Buchmuller, O. Dhamotharan, S. Geweniger, C. Graefe, G. 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. Goodsir, S. Martin, E.B. Marinelli, N. Moutoussi, A. Nash, J. Sedgbeer, J.K. Spagnolo, P. Williams, M.D. Ghete, V.M. Girtler, P. Kneringer, E. Kuhn, D. Rudolph, G. Betteridge, A.P. Bowdery, C.K. Buck, P.G. Colrain, P. Crawford, G. Finch, A.J. Foster, F. Hughes, G. Jones, R.W.L. Robertson, N.A. Williams, M.I. Giehl, I. Hoffmann, C. Jakobs, K. Kleinknecht, K. Quast, G. Renk, B. Rohne, E. Sander, H.G. van Gemmeren, P. Zeitnitz, C. Aubert, J.J. Benchouk, C. Bonissent, A. Bujosa, G. Carr, J. Coyle, P. Etienne, F. Leroy, O. Motsch, F. Payre, P. Talby, M. Sadouki, A. Thulasidas, M. Trabelsi, K. Aleppo, M. Antonelli, M. Ragusa, F. Berlich, R. Buescher, Volker Cowan, G. Dietl, H. Ganis, G. Lutjens, G. Mannert, C. Manner, W. Moser, H.G. Schael, S. Settles, R. Seywerd, H. Stenzel, H. Wiedenmann, W. Wolf, G. Boucrot, J. Callot, O. Chen, S. Cordier, A. Davier, M. Duflot, L. Grivaz, J.F. Heusse, P. Hocker, Andreas Jacholkowska, A. Kim, D.W. Le Diberder, F. Lefrancois, J. Lutz, A.M. Schune, M.H. Tournefier, E. Veillet, J.J. Videau, I. Zerwas, D. Azzurri, P. Bagliesi, Giuseppe Batignani, G. Bettarini, S. Boccali, T. Bozzi, C. Calderini, G. Carpinelli, M. Ciocci, M.A. Dell'Orso, R. Fantechi, R. Ferrante, I. Foa, L. Forti, F. Giassi, A. Giorgi, M.A. Gregorio, A. Ligabue, F. Lusiani, A. Marrocchesi, P.S. Messineo, A. Palla, F. Rizzo, G. Sanguinetti, G. Sciaba, A. Sguazzoni, G. Tenchini, R. Tonelli, G. Vannini, C. Venturi, A. Verdini, P.G. Blair, G.A. Bryant, L.M. Chambers, J.T. Green, M.G. Medcalf, T. Perrodo, P. Strong, J.A. von Wimmersperg-Toeller, J.H. Botterill, D.R. Clifft, R.W. Edgecock, T.R. Norton, P.R. Thompson, J.C. Wright, A.E. 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. Kelly, M.S. Lehto, M. Thompson, L.F. Affholderbach, K. Boehrer, Armin Brandt, S. Grupen, C. Saraiva, P. Smolik, L. Stephan, F. Giannini, G. Gobbo, B. Musolino, G. Rothberg, J. Wasserbaech, S. Armstrong, S.R. Charles, E. Elmer, P. Ferguson, D.P.S. Gao, Y. Gonzalez, S. Greening, T.C. Hayes, O.J. Hu, H. Jin, S. McNamara, P.A., III Nachtman, J.M. 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. Buskulic, D. Decamp, D. Ghez, Philippe Goy, C. Lees, J.P. Lucotte, A. Merle, E. Minard, M.N. Nief, J.Y. Pietrzyk, B. Alemany, R. Boix, G. Casado, M.P. Chmeissani, M. Crespo, J.M. Delfino, M. Fernandez, E. Fernandez-Bosman, M. Garrido, L. Grauges, E. Juste, A. Martinez, M. Merino, G. Miquel, R. Mir, L.M. Park, I.C. Pascual, A. Riu, I. Sanchez, F. Colaleo, A. Creanza, D. De Palma, M. Gelao, G. 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. Becker, U. Bright-Thomas, P. Casper, D. Cattaneo, M. Cerutti, F. Ciulli, V. Dissertori, G. Drevermann, H. Forty, R.W. Frank, M. Hagelberg, R. Halley, A.W. Hansen, J.B. Harvey, John Janot, P. Jost, B. Lehraus, I. Mato, P. Minten, A. Moneta, L. Pacheco, A. Ranjard, F. Rolandi, Gigi Rousseau, D. Schlatter, D. Schmitt, M. Schneider, O. Tejessy, W. Teubert, F. Tomalin, I.R. Wachsmuth, H. 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, J.C. Pallin, D. Perret, P. Podlyski, F. Proriol, J. Rosnet, P. Hansen, J.D. Hansen, J.R. Hansen, P.H. Nilsson, B.S. Rensch, B. Waananen, A. Daskalakis, G. Kyriakis, A. Markou, C. Simopoulou, E. Siotis, I. Vayaki, A. Blondel, A. Bonneaud, G. Brient, J.C. Bourdon, P. Rouge, A. Rumpf, M. Valassi, A. Verderi, M. Videau, H. Focardi, E. Parrini, G. Zachariadou, K. Corden, M. Georgiopoulos, C. Jaffe, D.E. Antonelli, A. Bencivenni, G. Bologna, G. Bossi, F. Campana, P. Capon, G. Chiarella, V. Felici, G. Laurelli, P. Mannocchi, G. Murtas, F. Murtas, G.P. Passalacqua, L. Pepe-Altarelli, M. Curtis, L. Lynch, J.G. Negus, P. O'Shea, V. Raine, C. Scarr, J.M. Smith, K. Teixeira-Dias, P. Thompson, A.S. Thomson, Evelyn J. Buchmuller, O. Dhamotharan, S. Geweniger, C. Graefe, G. 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. Goodsir, S. Martin, E.B. Marinelli, N. Moutoussi, A. Nash, J. Sedgbeer, J.K. Spagnolo, P. Williams, M.D. Ghete, V.M. Girtler, P. Kneringer, E. Kuhn, D. Rudolph, G. Betteridge, A.P. Bowdery, C.K. Buck, P.G. Colrain, P. Crawford, G. Finch, A.J. Foster, F. Hughes, G. Jones, R.W.L. Robertson, N.A. Williams, M.I. Giehl, I. Hoffmann, C. Jakobs, K. Kleinknecht, K. Quast, G. Renk, B. Rohne, E. Sander, H.G. van Gemmeren, P. Zeitnitz, C. Aubert, J.J. Benchouk, C. Bonissent, A. Bujosa, G. Carr, J. Coyle, P. Etienne, F. Leroy, O. Motsch, F. Payre, P. Talby, M. Sadouki, A. Thulasidas, M. Trabelsi, K. Aleppo, M. Antonelli, M. Ragusa, F. Berlich, R. Buescher, Volker Cowan, G. Dietl, H. Ganis, G. Lutjens, G. Mannert, C. Manner, W. Moser, H.G. Schael, S. Settles, R. Seywerd, H. Stenzel, H. Wiedenmann, W. Wolf, G. Boucrot, J. Callot, O. Chen, S. Cordier, A. Davier, M. Duflot, L. Grivaz, J.F. Heusse, P. Hocker, Andreas Jacholkowska, A. Kim, D.W. Le Diberder, F. Lefrancois, J. Lutz, A.M. Schune, M.H. Tournefier, E. Veillet, J.J. Videau, I. Zerwas, D. Azzurri, P. Bagliesi, Giuseppe Batignani, G. Bettarini, S. Boccali, T. Bozzi, C. Calderini, G. Carpinelli, M. Ciocci, M.A. Dell'Orso, R. Fantechi, R. Ferrante, I. Foa, L. Forti, F. Giassi, A. Giorgi, M.A. Gregorio, A. Ligabue, F. Lusiani, A. Marrocchesi, P.S. Messineo, A. Palla, F. Rizzo, G. Sanguinetti, G. Sciaba, A. Sguazzoni, G. Tenchini, R. Tonelli, G. Vannini, C. Venturi, A. Verdini, P.G. Blair, G.A. Bryant, L.M. Chambers, J.T. Green, M.G. Medcalf, T. Perrodo, P. Strong, J.A. von Wimmersperg-Toeller, J.H. Botterill, D.R. Clifft, R.W. Edgecock, T.R. Norton, P.R. Thompson, J.C. Wright, A.E. 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. Kelly, M.S. Lehto, M. Thompson, L.F. Affholderbach, K. Boehrer, Armin Brandt, S. Grupen, C. Saraiva, P. Smolik, L. Stephan, F. Giannini, G. Gobbo, B. Musolino, G. Rothberg, J. Wasserbaech, S. Armstrong, S.R. Charles, E. Elmer, P. Ferguson, D.P.S. Gao, Y. Gonzalez, S. Greening, T.C. Hayes, O.J. Hu, H. Jin, S. McNamara, P.A., III Nachtman, J.M. 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 | Using a sample of four million hadronic Z events collected in ALEPH from 1991 to 1995, the decays D^{*+} --> D^0 pi_{s}^+, with D^0 decaying to K^- pi^+ or to K^+ pi^-, are studied. The relative br anching ratio $B(\D^0 \to \K^+ \pi^-) / B(\D^0 \to \K^- \pi^+)$ is measured to be ( 1.84 \pm 0.59(\stat) \pm 0.34(\syst). The two possible contributions to the $\decDW$ decay, doubly Cabibbo-suppr essed decays and D^0-$D^0bar mixing, are disentangled by measuring the proper-time distribution of the reconstructed D^0's. Assuming no interference between the two processes, the upper limit obtai ned on the mixing rate is 0.92% at 95 % CL. The possible effect of interference between the two amplitudes is also assessed. |
id | cern-361255 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 1998 |
record_format | invenio |
spelling | cern-3612552023-03-14T17:01:04Zdoi:10.1016/S0370-2693(98)00946-0http://cds.cern.ch/record/361255engBarate, R.Buskulic, D.Decamp, D.Ghez, PhilippeGoy, C.Lees, J.P.Lucotte, A.Merle, E.Minard, M.N.Nief, J.Y.Pietrzyk, B.Alemany, R.Boix, G.Casado, M.P.Chmeissani, M.Crespo, J.M.Delfino, M.Fernandez, E.Fernandez-Bosman, M.Garrido, L.Grauges, E.Juste, A.Martinez, M.Merino, G.Miquel, R.Mir, L.M.Park, I.C.Pascual, A.Riu, I.Sanchez, F.Colaleo, A.Creanza, D.De Palma, M.Gelao, G.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.Becker, U.Bright-Thomas, P.Casper, D.Cattaneo, M.Cerutti, F.Ciulli, V.Dissertori, G.Drevermann, H.Forty, R.W.Frank, M.Hagelberg, R.Halley, A.W.Hansen, J.B.Harvey, JohnJanot, P.Jost, B.Lehraus, I.Mato, P.Minten, A.Moneta, L.Pacheco, A.Ranjard, F.Rolandi, GigiRousseau, D.Schlatter, D.Schmitt, M.Schneider, O.Tejessy, W.Teubert, F.Tomalin, I.R.Wachsmuth, H.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, J.C.Pallin, D.Perret, P.Podlyski, F.Proriol, J.Rosnet, P.Hansen, J.D.Hansen, J.R.Hansen, P.H.Nilsson, B.S.Rensch, B.Waananen, A.Daskalakis, G.Kyriakis, A.Markou, C.Simopoulou, E.Siotis, I.Vayaki, A.Blondel, A.Bonneaud, G.Brient, J.C.Bourdon, P.Rouge, A.Rumpf, M.Valassi, A.Verderi, M.Videau, H.Focardi, E.Parrini, G.Zachariadou, K.Corden, M.Georgiopoulos, C.Jaffe, D.E.Antonelli, A.Bencivenni, G.Bologna, G.Bossi, F.Campana, P.Capon, G.Chiarella, V.Felici, G.Laurelli, P.Mannocchi, G.Murtas, F.Murtas, G.P.Passalacqua, L.Pepe-Altarelli, M.Curtis, L.Lynch, J.G.Negus, P.O'Shea, V.Raine, C.Scarr, J.M.Smith, K.Teixeira-Dias, P.Thompson, A.S.Thomson, Evelyn J.Buchmuller, O.Dhamotharan, S.Geweniger, C.Graefe, G.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.Goodsir, S.Martin, E.B.Marinelli, N.Moutoussi, A.Nash, J.Sedgbeer, J.K.Spagnolo, P.Williams, M.D.Ghete, V.M.Girtler, P.Kneringer, E.Kuhn, D.Rudolph, G.Betteridge, A.P.Bowdery, C.K.Buck, P.G.Colrain, P.Crawford, G.Finch, A.J.Foster, F.Hughes, G.Jones, R.W.L.Robertson, N.A.Williams, M.I.Giehl, I.Hoffmann, C.Jakobs, K.Kleinknecht, K.Quast, G.Renk, B.Rohne, E.Sander, H.G.van Gemmeren, P.Zeitnitz, C.Aubert, J.J.Benchouk, C.Bonissent, A.Bujosa, G.Carr, J.Coyle, P.Etienne, F.Leroy, O.Motsch, F.Payre, P.Talby, M.Sadouki, A.Thulasidas, M.Trabelsi, K.Aleppo, M.Antonelli, M.Ragusa, F.Berlich, R.Buescher, VolkerCowan, G.Dietl, H.Ganis, G.Lutjens, G.Mannert, C.Manner, W.Moser, H.G.Schael, S.Settles, R.Seywerd, H.Stenzel, H.Wiedenmann, W.Wolf, G.Boucrot, J.Callot, O.Chen, S.Cordier, A.Davier, M.Duflot, L.Grivaz, J.F.Heusse, P.Hocker, AndreasJacholkowska, A.Kim, D.W.Le Diberder, F.Lefrancois, J.Lutz, A.M.Schune, M.H.Tournefier, E.Veillet, J.J.Videau, I.Zerwas, D.Azzurri, P.Bagliesi, GiuseppeBatignani, G.Bettarini, S.Boccali, T.Bozzi, C.Calderini, G.Carpinelli, M.Ciocci, M.A.Dell'Orso, R.Fantechi, R.Ferrante, I.Foa, L.Forti, F.Giassi, A.Giorgi, M.A.Gregorio, A.Ligabue, F.Lusiani, A.Marrocchesi, P.S.Messineo, A.Palla, F.Rizzo, G.Sanguinetti, G.Sciaba, A.Sguazzoni, G.Tenchini, R.Tonelli, G.Vannini, C.Venturi, A.Verdini, P.G.Blair, G.A.Bryant, L.M.Chambers, J.T.Green, M.G.Medcalf, T.Perrodo, P.Strong, J.A.von Wimmersperg-Toeller, J.H.Botterill, D.R.Clifft, R.W.Edgecock, T.R.Norton, P.R.Thompson, J.C.Wright, A.E.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.Kelly, M.S.Lehto, M.Thompson, L.F.Affholderbach, K.Boehrer, ArminBrandt, S.Grupen, C.Saraiva, P.Smolik, L.Stephan, F.Giannini, G.Gobbo, B.Musolino, G.Rothberg, J.Wasserbaech, S.Armstrong, S.R.Charles, E.Elmer, P.Ferguson, D.P.S.Gao, Y.Gonzalez, S.Greening, T.C.Hayes, O.J.Hu, H.Jin, S.McNamara, P.A., IIINachtman, J.M.Nielsen, J.Orejudos, W.Pan, Y.B.Saadi, Y.Scott, I.J.Walsh, J.Wu, S.L.Wu, X.Zobernig, G.Study of $D^{0}-\overline{D}^{0}$ mixing and $D^{0}$ doubly-Cabibbo-suppressed decaysParticle Physics - ExperimentUsing a sample of four million hadronic Z events collected in ALEPH from 1991 to 1995, the decays D^{*+} --> D^0 pi_{s}^+, with D^0 decaying to K^- pi^+ or to K^+ pi^-, are studied. The relative br anching ratio $B(\D^0 \to \K^+ \pi^-) / B(\D^0 \to \K^- \pi^+)$ is measured to be ( 1.84 \pm 0.59(\stat) \pm 0.34(\syst). The two possible contributions to the $\decDW$ decay, doubly Cabibbo-suppr essed decays and D^0-$D^0bar mixing, are disentangled by measuring the proper-time distribution of the reconstructed D^0's. Assuming no interference between the two processes, the upper limit obtai ned on the mixing rate is 0.92% at 95 % CL. The possible effect of interference between the two amplitudes is also assessed.Using a sample of four million hadronic Z events collected in ALEPH from 1991 to 1995, the decays D*+ -> D0pi^+_s, with D0 decaying to K-pi+ or to K+pi-, are studied. The relative branching ratio B(D0 -> K+pi-)/B(D0 -> K-pi+) is measured to be (1.84+-0.59(stat.)+-0.34(syst.))%. The two possible contributions to the D0 -> K+pi- decay, doubly cabibbo-suppressed decays and D0-Dbar0 mixing, are disentangled by measuring the proper-time ditribution of the reconstructed D0's. Assuming no interference between the two processes, the upper limit obtained on the mixing rate is 0.92% at 95% CL. The possible effect of interference between the two amplitudes is also assessed.Using a sample of four million hadronic Z events collected in ALEPH from 1991 to 1995, the decays D*+ -> D0pi^+_s, with D0 decaying to K-pi+ or to K+pi-, are studied. The relative branching ratio B(D0 -> K+pi-)/B(D0 -> K-pi+) is measured to be (1.84+-0.59(stat.)+-0.34(syst.))%. The two possible contributions to the D0 -> K+pi- decay, doubly cabibbo-suppressed decays and D0-Dbar0 mixing, are disentangled by measuring the proper-time ditribution of the reconstructed D0's. Assuming no interference between the two processes, the upper limit obtained on the mixing rate is 0.92% at 95% CL. The possible effect of interference between the two amplitudes is also assessed.Using a sample of four million hadronic Z events collected in ALEPH from 1991 to 1995, the decays D*+ -> D0pi^+_s, with D0 decaying to K-pi+ or to K+pi-, are studied. The relative branching ratio B(D0 -> K+pi-)/B(D0 -> K-pi+) is measured to be (1.84+-0.59(stat.)+-0.34(syst.))%. The two possible contributions to the D0 -> K+pi- decay, doubly cabibbo-suppressed decays and D0-Dbar0 mixing, are disentangled by measuring the proper-time ditribution of the reconstructed D0's. Assuming no interference between the two processes, the upper limit obtained on the mixing rate is 0.92% at 95% CL. The possible effect of interference between the two amplitudes is also assessed.Using a sample of four million hadronic Z events collected in ALEPH from 1991 to 1995, the decays D*+ -> D0pi^+_s, with D0 decaying to K-pi+ or to K+pi-, are studied. The relative branching ratio B(D0 -> K+pi-)/B(D0 -> K-pi+) is measured to be (1.84+-0.59(stat.)+-0.34(syst.))%. The two possible contributions to the D0 -> K+pi- decay, doubly cabibbo-suppressed decays and D0-Dbar0 mixing, are disentangled by measuring the proper-time ditribution of the reconstructed D0's. Assuming no interference between the two processes, the upper limit obtained on the mixing rate is 0.92% at 95% CL. The possible effect of interference between the two amplitudes is also assessed.Using a sample of four million hadronic Z events collected in ALEPH from 1991 to 1995, the decays D*+ -> D0pi^+_s, with D0 decaying to K-pi+ or to K+pi-, are studied. The relative branching ratio B(D0 -> K+pi-)/B(D0 -> K-pi+) is measured to be (1.84+-0.59(stat.)+-0.34(syst.))%. The two possible contributions to the D0 -> K+pi- decay, doubly cabibbo-suppressed decays and D0-Dbar0 mixing, are disentangled by measuring the proper-time ditribution of the reconstructed D0's. Assuming no interference between the two processes, the upper limit obtained on the mixing rate is 0.92% at 95% CL. The possible effect of interference between the two amplitudes is also assessed.Using a sample of four million hadronic Z events collected in ALEPH from 1991 to 1995, the decays D*+ -> D0pi^+_s, with D0 decaying to K-pi+ or to K+pi-, are studied. The relative branching ratio B(D0 -> K+pi-)/B(D0 -> K-pi+) is measured to be (1.84+-0.59(stat.)+-0.34(syst.))%. The two possible contributions to the D0 -> K+pi- decay, doubly cabibbo-suppressed decays and D0-Dbar0 mixing, are disentangled by measuring the proper-time ditribution of the reconstructed D0's. Assuming no interference between the two processes, the upper limit obtained on the mixing rate is 0.92% at 95% CL. The possible effect of interference between the two amplitudes is also assessed.Using a sample of four million hadronic Z events collected in ALEPH from 1991 to 1995, the decays D*+ -> D0pi^+_s, with D0 decaying to K-pi+ or to K+pi-, are studied. The relative branching ratio B(D0 -> K+pi-)/B(D0 -> K-pi+) is measured to be (1.84+-0.59(stat.)+-0.34(syst.))%. The two possible contributions to the D0 -> K+pi- decay, doubly cabibbo-suppressed decays and D0-Dbar0 mixing, are disentangled by measuring the proper-time ditribution of the reconstructed D0's. Assuming no interference between the two processes, the upper limit obtained on the mixing rate is 0.92% at 95% CL. The possible effect of interference between the two amplitudes is also assessed.Using a sample of four million hadronic Z events collected in ALEPH from 1991 to 1995, the decays D*+ -> D0pi^+_s, with D0 decaying to K-pi+ or to K+pi-, are studied. The relative branching ratio B(D0 -> K+pi-)/B(D0 -> K-pi+) is measured to be (1.84+-0.59(stat.)+-0.34(syst.))%. The two possible contributions to the D0 -> K+pi- decay, doubly cabibbo-suppressed decays and D0-Dbar0 mixing, are disentangled by measuring the proper-time ditribution of the reconstructed D0's. Assuming no interference between the two processes, the upper limit obtained on the mixing rate is 0.92% at 95% CL. The possible effect of interference between the two amplitudes is also assessed.Using a sample of four million hadronic Z events collected in ALEPH from 1991 to 1995, the decays D ∗+ → D 0 π s + , with D 0 decaying to K − π + or to K + π − , are studied. The relative branching ratio B (D 0 →K + π − )/ B (D 0 →K − π + ) is measured to be 1.84±0.59( stat. ) ±0.34( syst. ) %. The two possible contributions to the D 0 →K + π − decay, doubly Cabibbo-suppressed decays and D 0 – D ̄ 0 mixing, are disentangled by measuring the proper-time distribution of the reconstructed D 0 's. Assuming no interference between the two processes, the upper limit obtained on the mixing rate is 0.92% at 95% CL . The possible effect of interference between the two amplitudes is also assessed.hep-ex/9811021CERN-EP-98-118CERN-EP-98-118oai:cds.cern.ch:3612551998-07-20 |
spellingShingle | Particle Physics - Experiment Barate, R. Buskulic, D. Decamp, D. Ghez, Philippe Goy, C. Lees, J.P. Lucotte, A. Merle, E. Minard, M.N. Nief, J.Y. Pietrzyk, B. Alemany, R. Boix, G. Casado, M.P. Chmeissani, M. Crespo, J.M. Delfino, M. Fernandez, E. Fernandez-Bosman, M. Garrido, L. Grauges, E. Juste, A. Martinez, M. Merino, G. Miquel, R. Mir, L.M. Park, I.C. Pascual, A. Riu, I. Sanchez, F. Colaleo, A. Creanza, D. De Palma, M. Gelao, G. 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. Becker, U. Bright-Thomas, P. Casper, D. Cattaneo, M. Cerutti, F. Ciulli, V. Dissertori, G. Drevermann, H. Forty, R.W. Frank, M. Hagelberg, R. Halley, A.W. Hansen, J.B. Harvey, John Janot, P. Jost, B. Lehraus, I. Mato, P. Minten, A. Moneta, L. Pacheco, A. Ranjard, F. Rolandi, Gigi Rousseau, D. Schlatter, D. Schmitt, M. Schneider, O. Tejessy, W. Teubert, F. Tomalin, I.R. Wachsmuth, H. 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, J.C. Pallin, D. Perret, P. Podlyski, F. Proriol, J. Rosnet, P. Hansen, J.D. Hansen, J.R. Hansen, P.H. Nilsson, B.S. Rensch, B. Waananen, A. Daskalakis, G. Kyriakis, A. Markou, C. Simopoulou, E. Siotis, I. Vayaki, A. Blondel, A. Bonneaud, G. Brient, J.C. Bourdon, P. Rouge, A. Rumpf, M. Valassi, A. Verderi, M. Videau, H. Focardi, E. Parrini, G. Zachariadou, K. Corden, M. Georgiopoulos, C. Jaffe, D.E. Antonelli, A. Bencivenni, G. Bologna, G. Bossi, F. Campana, P. Capon, G. Chiarella, V. Felici, G. Laurelli, P. Mannocchi, G. Murtas, F. Murtas, G.P. Passalacqua, L. Pepe-Altarelli, M. Curtis, L. Lynch, J.G. Negus, P. O'Shea, V. Raine, C. Scarr, J.M. Smith, K. Teixeira-Dias, P. Thompson, A.S. Thomson, Evelyn J. Buchmuller, O. Dhamotharan, S. Geweniger, C. Graefe, G. 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. Goodsir, S. Martin, E.B. Marinelli, N. Moutoussi, A. Nash, J. Sedgbeer, J.K. Spagnolo, P. Williams, M.D. Ghete, V.M. Girtler, P. Kneringer, E. Kuhn, D. Rudolph, G. Betteridge, A.P. Bowdery, C.K. Buck, P.G. Colrain, P. Crawford, G. Finch, A.J. Foster, F. Hughes, G. Jones, R.W.L. Robertson, N.A. Williams, M.I. Giehl, I. Hoffmann, C. Jakobs, K. Kleinknecht, K. Quast, G. Renk, B. Rohne, E. Sander, H.G. van Gemmeren, P. Zeitnitz, C. Aubert, J.J. Benchouk, C. Bonissent, A. Bujosa, G. Carr, J. Coyle, P. Etienne, F. Leroy, O. Motsch, F. Payre, P. Talby, M. Sadouki, A. Thulasidas, M. Trabelsi, K. Aleppo, M. Antonelli, M. Ragusa, F. Berlich, R. Buescher, Volker Cowan, G. Dietl, H. Ganis, G. Lutjens, G. Mannert, C. Manner, W. Moser, H.G. Schael, S. Settles, R. Seywerd, H. Stenzel, H. Wiedenmann, W. Wolf, G. Boucrot, J. Callot, O. Chen, S. Cordier, A. Davier, M. Duflot, L. Grivaz, J.F. Heusse, P. Hocker, Andreas Jacholkowska, A. Kim, D.W. Le Diberder, F. Lefrancois, J. Lutz, A.M. Schune, M.H. Tournefier, E. Veillet, J.J. Videau, I. Zerwas, D. Azzurri, P. Bagliesi, Giuseppe Batignani, G. Bettarini, S. Boccali, T. Bozzi, C. Calderini, G. Carpinelli, M. Ciocci, M.A. Dell'Orso, R. Fantechi, R. Ferrante, I. Foa, L. Forti, F. Giassi, A. Giorgi, M.A. Gregorio, A. Ligabue, F. Lusiani, A. Marrocchesi, P.S. Messineo, A. Palla, F. Rizzo, G. Sanguinetti, G. Sciaba, A. Sguazzoni, G. Tenchini, R. Tonelli, G. Vannini, C. Venturi, A. Verdini, P.G. Blair, G.A. Bryant, L.M. Chambers, J.T. Green, M.G. Medcalf, T. Perrodo, P. Strong, J.A. von Wimmersperg-Toeller, J.H. Botterill, D.R. Clifft, R.W. Edgecock, T.R. Norton, P.R. Thompson, J.C. Wright, A.E. 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. Kelly, M.S. Lehto, M. Thompson, L.F. Affholderbach, K. Boehrer, Armin Brandt, S. Grupen, C. Saraiva, P. Smolik, L. Stephan, F. Giannini, G. Gobbo, B. Musolino, G. Rothberg, J. Wasserbaech, S. Armstrong, S.R. Charles, E. Elmer, P. Ferguson, D.P.S. Gao, Y. Gonzalez, S. Greening, T.C. Hayes, O.J. Hu, H. Jin, S. McNamara, P.A., III Nachtman, J.M. Nielsen, J. Orejudos, W. Pan, Y.B. Saadi, Y. Scott, I.J. Walsh, J. Wu, S.L. Wu, X. Zobernig, G. Study of $D^{0}-\overline{D}^{0}$ mixing and $D^{0}$ doubly-Cabibbo-suppressed decays |
title | Study of $D^{0}-\overline{D}^{0}$ mixing and $D^{0}$ doubly-Cabibbo-suppressed decays |
title_full | Study of $D^{0}-\overline{D}^{0}$ mixing and $D^{0}$ doubly-Cabibbo-suppressed decays |
title_fullStr | Study of $D^{0}-\overline{D}^{0}$ mixing and $D^{0}$ doubly-Cabibbo-suppressed decays |
title_full_unstemmed | Study of $D^{0}-\overline{D}^{0}$ mixing and $D^{0}$ doubly-Cabibbo-suppressed decays |
title_short | Study of $D^{0}-\overline{D}^{0}$ mixing and $D^{0}$ doubly-Cabibbo-suppressed decays |
title_sort | study of $d^{0}-\overline{d}^{0}$ mixing and $d^{0}$ doubly-cabibbo-suppressed decays |
topic | Particle Physics - Experiment |
url | https://dx.doi.org/10.1016/S0370-2693(98)00946-0 http://cds.cern.ch/record/361255 |
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