The time dependence of B-d(-)(B) over bar(d)(-0) oscillations is measured by the ALEPH experiment at LEP, using three techniques; two of which are updates of previous measurements. In all cases the charge of the decaying b quark and its decay time are measured in one hemisphere of the event; the quark charge at production is tagged mainly using the opposite hemisphere. The first method uses the charge correlation between a D*(-) and a lepton in the opposite hemisphere; if no lepton is present, the produced quark charge is determined from the hemisphere charges. In the second method, the decay time is measured using a lepton in one hemisphere and the initial state is inferred from the opposite-hemisphere jet charge. The third method uses a lepton in each hemisphere. The data used were collected from 1991 to 1994. The combined result is Delta m(d)=0.446+/-0.032 ps(-1).
Improved measurement of the B d 0 -B̄ d 0 oscillation frequency / Buskulic, D; Debonis, I; Decamp, D; Ghez, P; Goy, C; Lees, Jp; Lucotte, A; Minard, Mn; Nief, Jy; Odier, P; Pietrzyk, B; Casado, Mp; Chmeissani, M; Crespo, Jm; Delfino, M; Efthymiopoulos, I; Fernandez, E; Fernandezbosman, M; Garrido, L; Juste, A; Martinez, M; Orteu, S; Padilla, C; Park, Ic; Pascual, A; Perlas, Ja; Riu, I; Sanchez, F; Teubert, F; Colaleo, A; Creanza, D; Depalma, M; Gelao, G; Girone, M; Iaselli, G; Maggi, G; Maggi, M; Marinelli, N; Nuzzo, S; Ranieri, A; Raso, G; Ruggieri, F; Selvaggi, G; Silvestris, L; Tempesta, P; Tricomi, A; Zito, G; Huang, X; Lin, J; Ouyang, Q; Wang, T; Xie, Y; Xu, R; Xue, S; Zhang, J; Zhang, L; Zhao, W; Alemany, R; Bazarko, Ao; Bonvicini, G; Brightthomas, P; Cattaneo, M; Comas, P; Coyle, P; Drevermann, H; Forty, Rw; Frank, M; Hagelberg, R; Harvey, J; Janot, P; Jost, B; Kneringer, E; Knobloch, J; Lehraus, I; Lutters, G; Martin, Eb; Mato, P; Minten, A; Miquel, R; Mir, Lm; Moneta, L; Oest, T; Pacheco, A; Pusztaszeri, Jf; Ranjard, F; Rensing, P; Rizzo, G; Rolandi, L; Schlatter, D; Schmelling, M; Schmitt, M; Schneider, O; Tejessy, W; Tomalin, Ir; Venturi, A; Wachsmuth, H; Wagner, A; Ajaltouni, Z; Barres, A; Boyer, C; Falvard, A; Gay, P; Guicheney, C; Henrard, P; Jousset, J; Michel, B; Monteil, S; Montret, Jc; Pallin, D; Perret, P; Podlyski, F; Proriol, J; Rosnet, P; Rossignol, Jm; Fearnley, T; Hansen, Jb; Hansen, Jd; Hansen, Jr; Hansen, Ph; Nilsson, Bs; Rensch, B; Waananen, A; Kyriakis, A; Markou, C; Simopoulou, E; Siotis, I; Vayaki, A; Zachariadou, K; Blondel, A; Bonneaud, G; Brient, Jc; Bourdon, P; Rouge, A; Rumpf, M; Valassi, A; Verderi, M; Videau, H; Candlin, Dj; Parsons, Mi; Focardi, E; Parrini, G; Corden, M; Georgiopoulos, C; Jaffe, De; Antonelli, A; Bencivenni, G; Bologna, G; Bossi, F; Campana, P; Capon, G; Casper, D; Chiarella, V; Felici, G; Laurelli, P; Mannocchi, G; Murtas, F; Murtas, Gp; Passalacqua, L; Pepealtarelli, M; Curtis, L; Dorris, Sj; Halley, Aw; Knowles, Ig; Lynch, Jg; Oshea, V; Raine, C; Reeves, P; Scarr, Jm; Smith, K; Teixeiradias, P; Thompson, As; Thomson, F; Thorn, T; Turnbull, Rm; Becker, U; Geweniger, C; Graefe, G; Hanke, P; Hansper, G; Hepp, V; Kluge, Ee; Putzer, A; Schmidt, M; Sommer, J; Stenzel, H; Tittel, K; Werner, S; Wunsch, M; Abbaneo, D; Beuselinck, R; Binnie, Dm; Cameron, W; Doman, Pj; Moutoussi, A; Nash, J; Sedgbeer, Jk; Stacey, Am; Williams, Md; Dissertori, G; Girtler, P; Kuhn, D; Rudolph, G; Betteridge, Ap; Bowdery, Ck; Colrain, P; Crawford, G; Finch, Aj; Foster, F; Hughes, G; Sloan, T; Williams, Mi; Galla, A; Giehl, I; Greene, Am; Hoffmann, C; Jakobs, K; Kleinknecht, K; Quast, G; Renk, B; Rohne, E; Sander, Hg; Vangemmeren, P; Zeitnitz, C; Aubert, Jj; Bencheikh, Am; Benchouk, C; Bonissent, A; Bujosa, G; Calvet, D; Carr, J; Diaconu, C; Etienne, F; Konstantinidis, N; Payre, P; Rousseau, D; Talby, M; Sadouki, A; Thulasidas, M; Trabelsi, K; Aleppo, M; Ragusa, F; Bauer, C; Berlich, R; Blum, W; Buscher, V; Dietl, H; Dydak, F; Ganis, G; Gotzhein, C; Kroha, H; Lutjens, G; Lutz, G; Manner, W; Moser, Hg; Richter, R; Rosadoschlosser, A; Schael, S; Settles, R; Seywerd, H; Stdenis, R; Stenzel, H; Wiedenmann, W; Wolf, G; Boucrot, J; Callot, O; Choi, Y; Cordier, A; Davier, M; Duflot, L; Grivaz, Jf; Heusse, P; Hocker, A; Jacholkowska, Aj; Jacquet, M; Kim, Dw; Lediberder, F; Lefrancois, J; Lutz, Am; Nikolic, I; Park, Hj; Schune, Mh; Simion, S; Veillet, Jj; Videau, I; Zerwas, 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; Foa, L; Forti, F; Giassi, A; Giorgi, Ma; Gregorio, A; Ligabue, F; Lusiani, A; Marrocchesi, Ps; Messineo, A; Palla, F; Sanguinetti, G; Sciaba, A; Spagnolo, P; Steinberger, J; Tenchini, R; Tonelli, G; Vannini, C; Verdini, Pg; Walsh, J; Blair, Ga; Bryant, Lm; Cerutti, F; Chambers, Jt; Gao, Y; Green, Mg; Medcalf, T; Perrodo, P; Strong, Ja; Vonwimmerspergtoeller, Jh; Botterill, Dr; Clifft, Rw; Edgecock, Tr; Haywood, S; Maley, P; Norton, Pr; Thompson, Jc; Wright, Ae; Blochdevaux, B; Colas, P; Emery, S; Kozanecki, W; Lancon, E; Lemaire, Mc; Locci, E; Marx, B; Perez, P; Rander, J; Renardy, Jf; Roussarie, A; Schuller, Jp; Schwindling, J; Trabelsi, A; Vallage, B; Black, Sn; Dann, Jh; Johnson, Rp; Kim, Hy; Litke, Am; Mcneil, Ma; Taylor, G; Booth, Cn; Boswell, R; Brew, Caj; Cartwright, S; Combley, F; Koksal, A; Letho, M; Newton, Wm; Reeve, J; Thompson, Lf; Bohrer, A; Brandt, S; Cowan, G; Grupen, C; Minguetrodriguez, J; Rivera, F; Saraiva, P; Smolik, L; Stephan, F; Apollonio, M; Bosisio, L; Dellamarina, R; Giannini, G; Gobbo, B; Musolino, G; Rothberg, J; Wasserbaech, S. - In: ZEITSCHRIFT FÜR PHYSIK. C, PARTICLES AND FIELDS. - ISSN 0170-9739. - STAMPA. - 75:3(1997), pp. 397-407. [10.1007/s002880050483]
Improved measurement of the B d 0 -B̄ d 0 oscillation frequency
Buskulic D; DeBonis I; Decamp D; Ghez P; Goy C; Lees JP; Lucotte A; Minard MN; Nief JY; Odier P; Pietrzyk B; Casado MP; Chmeissani M; Crespo JM; Delfino M; Efthymiopoulos I; Fernandez E; FernandezBosman M; Garrido L; Juste A; Martinez M; Orteu S; Padilla C; Park IC; Pascual A; Perlas JA; Riu I; Sanchez F; Teubert F; Colaleo A; Creanza D ;dePalma M; Gelao G ;Girone M; Iaselli G ;Maggi G ;Maggi M; Marinelli N; Nuzzo S; Ranieri A; Raso G; Ruggieri F; Selvaggi G; Silvestris L; Tempesta P; Tricomi A; Zito G; Huang X; Lin J; Ouyang Q; Wang T; Xie Y; Xu R; Xue S; Zhang J; Zhang L; Zhao W; Alemany R; Bazarko AO; Bonvicini G; BrightThomas P; Cattaneo M; Comas P; Coyle P; Drevermann H; Forty RW; Frank M; Hagelberg R; Harvey J; Janot P; Jost B; Kneringer E; Knobloch J; Lehraus I; Lutters G; Martin EB; Mato P; Minten A; Miquel R; Mir LM; Moneta L; Oest T; Pacheco A; Pusztaszeri JF; Ranjard F; Rensing P; Rizzo G; Rolandi L; Schlatter D; Schmelling M; Schmitt M; Schneider O; Tejessy W; Tomalin IR; Venturi A; Wachsmuth H; Wagner A; Ajaltouni Z; Barres A; Boyer C; Falvard A; Gay P; Guicheney C; Henrard P; Jousset J; Michel B; Monteil S; Montret JC; Pallin D; Perret P; Podlyski F; Proriol J; Rosnet P; Rossignol JM; Fearnley T; Hansen JB; Hansen JD; Hansen JR; Hansen PH; Nilsson BS; Rensch B; Waananen A; Kyriakis A; Markou C; Simopoulou E; Siotis I; Vayaki A; Zachariadou K; Blondel A; Bonneaud G; Brient JC; Bourdon P; Rouge A; Rumpf M; Valassi A; Verderi M; Videau H; Candlin DJ; Parsons MI; Focardi E; Parrini G; Corden M; Georgiopoulos C; Jaffe DE; Antonelli A; Bencivenni G; Bologna G; Bossi F; Campana P; Capon G; Casper D; Chiarella V; Felici G; Laurelli P; Mannocchi G; Murtas F; Murtas GP; Passalacqua L; PepeAltarelli M; Curtis L; Dorris SJ; Halley AW; Knowles IG; Lynch JG; OShea V; Raine C; Reeves P; Scarr JM; Smith K; TeixeiraDias P; Thompson AS; Thomson F; Thorn T; Turnbull RM; Becker U; Geweniger C; Graefe G; Hanke P; Hansper G; Hepp V; Kluge EE; Putzer A; Schmidt M; Sommer J; Stenzel H; Tittel K; Werner S; Wunsch M; Abbaneo D; Beuselinck R; Binnie DM; Cameron W; Doman PJ; Moutoussi A; Nash J; Sedgbeer JK; Stacey AM; Williams MD; Dissertori G; Girtler P; Kuhn D; Rudolph G; Betteridge AP; Bowdery CK; Colrain P; Crawford G; Finch AJ; Foster F; Hughes G; Sloan T; Williams MI; Galla A; Giehl I; Greene AM; Hoffmann C; Jakobs K; Kleinknecht K; Quast G; Renk B; Rohne E; Sander HG; vanGemmeren P; Zeitnitz C; Aubert JJ; Bencheikh AM; Benchouk C; Bonissent A; Bujosa G; Calvet D; Carr J; Diaconu C; Etienne F; Konstantinidis N; Payre P; Rousseau D; Talby M; Sadouki A; Thulasidas M; Trabelsi K; Aleppo M; Ragusa F; Bauer C; Berlich R; Blum W; Buscher V; Dietl H; Dydak F; Ganis G; Gotzhein C; Kroha H; Lutjens G; Lutz G; Manner W; Moser HG; Richter R; RosadoSchlosser A; Schael S; Settles R; Seywerd H; StDenis R; Stenzel H; Wiedenmann W; Wolf G; Boucrot J; Callot O; Choi Y; Cordier A; Davier M; Duflot L; Grivaz JF; Heusse P; Hocker A; Jacholkowska AJ; Jacquet M; Kim DW; LeDiberder F; Lefrancois J; Lutz AM; Nikolic I; Park HJ; Schune MH; Simion S; Veillet JJ; Videau I; Zerwas 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; Foa L; Forti F; Giassi A; Giorgi MA; Gregorio A; Ligabue F; Lusiani A; Marrocchesi PS; Messineo A; Palla F; Sanguinetti G; Sciaba A; Spagnolo P; Steinberger J; Tenchini R; Tonelli G; Vannini C; Verdini PG; Walsh J; Blair GA; Bryant LM; Cerutti F; Chambers JT; Gao Y; Green MG; Medcalf T; Perrodo P; Strong JA; vonWimmerspergToeller JH; Botterill DR; Clifft RW; Edgecock TR; Haywood S; Maley P; Norton PR; Thompson JC; Wright AE; BlochDevaux B; Colas P; Emery S; Kozanecki W; Lancon E; Lemaire MC; Locci E; Marx B; Perez P; Rander J; Renardy JF; Roussarie A; Schuller JP; Schwindling J; Trabelsi A; Vallage B; Black SN; Dann JH; Johnson RP; Kim HY; Litke AM; McNeil MA; Taylor G; Booth CN; Boswell R; Brew CAJ; Cartwright S; Combley F; Koksal A; Letho M; Newton WM; Reeve J; Thompson LF; Bohrer A; Brandt S; Cowan G; Grupen C; MinguetRodriguez J; Rivera F; Saraiva P; Smolik L; Stephan F; Apollonio M; Bosisio L; DellaMarina R; Giannini G; Gobbo B; Musolino G; Rothberg J; Wasserbaech S
1997-01-01
Abstract
The time dependence of B-d(-)(B) over bar(d)(-0) oscillations is measured by the ALEPH experiment at LEP, using three techniques; two of which are updates of previous measurements. In all cases the charge of the decaying b quark and its decay time are measured in one hemisphere of the event; the quark charge at production is tagged mainly using the opposite hemisphere. The first method uses the charge correlation between a D*(-) and a lepton in the opposite hemisphere; if no lepton is present, the produced quark charge is determined from the hemisphere charges. In the second method, the decay time is measured using a lepton in one hemisphere and the initial state is inferred from the opposite-hemisphere jet charge. The third method uses a lepton in each hemisphere. The data used were collected from 1991 to 1994. The combined result is Delta m(d)=0.446+/-0.032 ps(-1).
Citazione
Improved measurement of the B d 0 -B̄ d 0 oscillation frequency / Buskulic, D; Debonis, I; Decamp, D; Ghez, P; Goy, C; Lees, Jp; Lucotte, A; Minard, Mn; Nief, Jy; Odier, P; Pietrzyk, B; Casado, Mp; Chmeissani, M; Crespo, Jm; Delfino, M; Efthymiopoulos, I; Fernandez, E; Fernandezbosman, M; Garrido, L; Juste, A; Martinez, M; Orteu, S; Padilla, C; Park, Ic; Pascual, A; Perlas, Ja; Riu, I; Sanchez, F; Teubert, F; Colaleo, A; Creanza, D; Depalma, M; Gelao, G; Girone, M; Iaselli, G; Maggi, G; Maggi, M; Marinelli, N; Nuzzo, S; Ranieri, A; Raso, G; Ruggieri, F; Selvaggi, G; Silvestris, L; Tempesta, P; Tricomi, A; Zito, G; Huang, X; Lin, J; Ouyang, Q; Wang, T; Xie, Y; Xu, R; Xue, S; Zhang, J; Zhang, L; Zhao, W; Alemany, R; Bazarko, Ao; Bonvicini, G; Brightthomas, P; Cattaneo, M; Comas, P; Coyle, P; Drevermann, H; Forty, Rw; Frank, M; Hagelberg, R; Harvey, J; Janot, P; Jost, B; Kneringer, E; Knobloch, J; Lehraus, I; Lutters, G; Martin, Eb; Mato, P; Minten, A; Miquel, R; Mir, Lm; Moneta, L; Oest, T; Pacheco, A; Pusztaszeri, Jf; Ranjard, F; Rensing, P; Rizzo, G; Rolandi, L; Schlatter, D; Schmelling, M; Schmitt, M; Schneider, O; Tejessy, W; Tomalin, Ir; Venturi, A; Wachsmuth, H; Wagner, A; Ajaltouni, Z; Barres, A; Boyer, C; Falvard, A; Gay, P; Guicheney, C; Henrard, P; Jousset, J; Michel, B; Monteil, S; Montret, Jc; Pallin, D; Perret, P; Podlyski, F; Proriol, J; Rosnet, P; Rossignol, Jm; Fearnley, T; Hansen, Jb; Hansen, Jd; Hansen, Jr; Hansen, Ph; Nilsson, Bs; Rensch, B; Waananen, A; Kyriakis, A; Markou, C; Simopoulou, E; Siotis, I; Vayaki, A; Zachariadou, K; Blondel, A; Bonneaud, G; Brient, Jc; Bourdon, P; Rouge, A; Rumpf, M; Valassi, A; Verderi, M; Videau, H; Candlin, Dj; Parsons, Mi; Focardi, E; Parrini, G; Corden, M; Georgiopoulos, C; Jaffe, De; Antonelli, A; Bencivenni, G; Bologna, G; Bossi, F; Campana, P; Capon, G; Casper, D; Chiarella, V; Felici, G; Laurelli, P; Mannocchi, G; Murtas, F; Murtas, Gp; Passalacqua, L; Pepealtarelli, M; Curtis, L; Dorris, Sj; Halley, Aw; Knowles, Ig; Lynch, Jg; Oshea, V; Raine, C; Reeves, P; Scarr, Jm; Smith, K; Teixeiradias, P; Thompson, As; Thomson, F; Thorn, T; Turnbull, Rm; Becker, U; Geweniger, C; Graefe, G; Hanke, P; Hansper, G; Hepp, V; Kluge, Ee; Putzer, A; Schmidt, M; Sommer, J; Stenzel, H; Tittel, K; Werner, S; Wunsch, M; Abbaneo, D; Beuselinck, R; Binnie, Dm; Cameron, W; Doman, Pj; Moutoussi, A; Nash, J; Sedgbeer, Jk; Stacey, Am; Williams, Md; Dissertori, G; Girtler, P; Kuhn, D; Rudolph, G; Betteridge, Ap; Bowdery, Ck; Colrain, P; Crawford, G; Finch, Aj; Foster, F; Hughes, G; Sloan, T; Williams, Mi; Galla, A; Giehl, I; Greene, Am; Hoffmann, C; Jakobs, K; Kleinknecht, K; Quast, G; Renk, B; Rohne, E; Sander, Hg; Vangemmeren, P; Zeitnitz, C; Aubert, Jj; Bencheikh, Am; Benchouk, C; Bonissent, A; Bujosa, G; Calvet, D; Carr, J; Diaconu, C; Etienne, F; Konstantinidis, N; Payre, P; Rousseau, D; Talby, M; Sadouki, A; Thulasidas, M; Trabelsi, K; Aleppo, M; Ragusa, F; Bauer, C; Berlich, R; Blum, W; Buscher, V; Dietl, H; Dydak, F; Ganis, G; Gotzhein, C; Kroha, H; Lutjens, G; Lutz, G; Manner, W; Moser, Hg; Richter, R; Rosadoschlosser, A; Schael, S; Settles, R; Seywerd, H; Stdenis, R; Stenzel, H; Wiedenmann, W; Wolf, G; Boucrot, J; Callot, O; Choi, Y; Cordier, A; Davier, M; Duflot, L; Grivaz, Jf; Heusse, P; Hocker, A; Jacholkowska, Aj; Jacquet, M; Kim, Dw; Lediberder, F; Lefrancois, J; Lutz, Am; Nikolic, I; Park, Hj; Schune, Mh; Simion, S; Veillet, Jj; Videau, I; Zerwas, 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; Foa, L; Forti, F; Giassi, A; Giorgi, Ma; Gregorio, A; Ligabue, F; Lusiani, A; Marrocchesi, Ps; Messineo, A; Palla, F; Sanguinetti, G; Sciaba, A; Spagnolo, P; Steinberger, J; Tenchini, R; Tonelli, G; Vannini, C; Verdini, Pg; Walsh, J; Blair, Ga; Bryant, Lm; Cerutti, F; Chambers, Jt; Gao, Y; Green, Mg; Medcalf, T; Perrodo, P; Strong, Ja; Vonwimmerspergtoeller, Jh; Botterill, Dr; Clifft, Rw; Edgecock, Tr; Haywood, S; Maley, P; Norton, Pr; Thompson, Jc; Wright, Ae; Blochdevaux, B; Colas, P; Emery, S; Kozanecki, W; Lancon, E; Lemaire, Mc; Locci, E; Marx, B; Perez, P; Rander, J; Renardy, Jf; Roussarie, A; Schuller, Jp; Schwindling, J; Trabelsi, A; Vallage, B; Black, Sn; Dann, Jh; Johnson, Rp; Kim, Hy; Litke, Am; Mcneil, Ma; Taylor, G; Booth, Cn; Boswell, R; Brew, Caj; Cartwright, S; Combley, F; Koksal, A; Letho, M; Newton, Wm; Reeve, J; Thompson, Lf; Bohrer, A; Brandt, S; Cowan, G; Grupen, C; Minguetrodriguez, J; Rivera, F; Saraiva, P; Smolik, L; Stephan, F; Apollonio, M; Bosisio, L; Dellamarina, R; Giannini, G; Gobbo, B; Musolino, G; Rothberg, J; Wasserbaech, S. - In: ZEITSCHRIFT FÜR PHYSIK. C, PARTICLES AND FIELDS. - ISSN 0170-9739. - STAMPA. - 75:3(1997), pp. 397-407. [10.1007/s002880050483]
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