Simultaneous measurement of the B0 meson lifetime and mixing frequency with B0→D*-l+νl decays

Aubert, B.; Barate, R.; Boutigny, D.; Gaillard, J.; Hicheur, A.; Karyotakis, Y.; Lees, J.; Robbe, P.; Tisserand, V.; Zghiche, A.; Palano, A.; Pompili, A.; Chen, J.; Qi, N.; Rong, G.; Wang, P.; Zhu, Y.; Eigen, G.; Ofte, I.; Stugu, B.; Abrams, G.; Borgland, A.; Breon, A.; Brown, D.; Button Shafer, J.; Cahn, R.; Charles, E.; Gill, M.; Gritsan, A.; Groysman, Y.; Jacobsen, R.; Kadel, R.; Kadyk, J.; Kerth, L.; Kolomensky, Y.; Kral, J.; Leclerc, C.; Levi, M.; Lynch, G.; Mir, L.; Oddone, P.; Orimoto, T.; Pripstein, M.; Roe, N.; Romosan, A.; Ronan, M.; Shelkov, V.; Telnov, A.; Wenzel, W.; Harrison, T.; Hawkes, C.; Knowles, D.; O’Neale, S.; Penny, R.; Watson, A.; Watson, N.; Deppermann, T.; Goetzen, K.; Koch, H.; Lewandowski, B.; Pelizaeus, M.; Peters, K.; Schmuecker, H.; Steinke, M.; Barlow, N.; Bhimji, W.; Boyd, J.; Chevalier, N.; Clark, P.; Cottingham, W.; Mackay, C.; Wilson, F.; Hearty, C.; Mattison, T.; Mckenna, J.; Thiessen, D.; Jolly, S.; Kyberd, P.; Mckemey, A.; Blinov, V.; Bukin, A.; Buzykaev, A.; Golubev, V.; Ivanchenko, V.; Korol, A.; Kravchenko, E.; Onuchin, A.; Serednyakov, S.; Skovpen, Y.; Yushkov, A.; Best, D.; Chao, M.; Kirkby, D.; Lankford, A.; Mandelkern, M.; Mcmahon, S.; Mommsen, R.; Stoker, D.; Buchanan, C.; Hadavand, H.; Hill, E.; Macfarlane, D.; Paar, H.; Rahatlou, S.; Raven, G.; Schwanke, U.; Sharma, V.; Berryhill, J.; Campagnari, C.; Dahmes, B.; Kuznetsova, N.; Levy, S.; Long, O.; Lu, A.; Mazur, M.; Richman, J.; Verkerke, W.; Beringer, J.; Eisner, A.; Grothe, M.; Heusch, C.; Lockman, W.; Pulliam, T.; Schalk, T.; Schmitz, R.; Schumm, B.; Seiden, A.; Turri, M.; Walkowiak, W.; Williams, D.; Wilson, M.; Albert, J.; Chen, E.; Dubois Felsmann, G.; Dvoretskii, A.; Hitlin, D.; Narsky, I.; Porter, F.; Ryd, A.; Samuel, A.; Yang, S.; Jayatilleke, S.; Mancinelli, G.; Meadows, B.; Sokoloff, M.; Barillari, T.; Blanc, F.; Bloom, P.; Ford, W.; Nauenberg, U.; Olivas, A.; Rankin, P.; Roy, J.; Smith, J.; van Hoek, W.; Zhang, L.; Harton, J.; Hu, T.; Soffer, A.; Toki, W.; Wilson, R.; Zhang, J.; Altenburg, D.; Brandt, T.; Brose, J.; Colberg, T.; Dickopp, M.; Dubitzky, R.; Hauke, A.; Maly, E.; Müller Pfefferkorn, R.; Nogowski, R.; Otto, S.; Schubert, K.; Schwierz, R.; Spaan, B.; Wilden, L.; Bernard, D.; Bonneaud, G.; Brochard, F.; Cohen Tanugi, J.; T’Jampens, S.; Thiebaux, C.; Vasileiadis, G.; Verderi, M.; Anjomshoaa, A.; Bernet, R.; Khan, A.; Lavin, D.; Muheim, F.; Playfer, S.; Swain, J.; Tinslay, J.; Falbo, M.; Borean, C.; Bozzi, C.; Piemontese, L.; Sarti, A.; Treadwell, E.; Anulli, F.; Baldini Ferroli, R.; Calcaterra, A.; de Sangro, R.; Falciai, D.; Finocchiaro, G.; Patteri, P.; Peruzzi, I.; Piccolo, M.; Zallo, A.; Bagnasco, S.; Buzzo, A.; Contri, R.; Crosetti, G.; Lo Vetere, M.; Macri, M.; Monge, M.; Passaggio, S.; Pastore, F.; Patrignani, C.; Robutti, E.; Santroni, A.; Tosi, S.; Bailey, S.; Morii, M.; Grenier, G.; Mallik, U.; Cochran, J.; Crawley, H.; Lamsa, J.; Meyer, W.; Prell, S.; Rosenberg, E.; Yi, J.; Davier, M.; Grosdidier, G.; Höcker, A.; Lacker, H.; Laplace, S.; Le Diberder, F.; Lepeltier, V.; Lutz, A.; Petersen, T.; Plaszczynski, S.; Schune, M.; Tantot, L.; Wormser, G.; Bionta, R.; Brigljević, V.; Lange, D.; van Bibber, K.; Wright, D.; Bevan, A.; Fry, J.; Gabathuler, E.; Gamet, R.; George, M.; Kay, M.; Payne, D.; Sloane, R.; Touramanis, C.; Aspinwall, M.; Bowerman, D.; Dauncey, P.; Egede, U.; Eschrich, I.; Morton, G.; Nash, J.; Sanders, P.; Taylor, G.; Back, J.; Bellodi, G.; Dixon, P.; Harrison, P.; Shorthouse, H.; Strother, P.; Vidal, P.; Cowan, G.; Flaecher, H.; George, S.; Green, M.; Kurup, A.; Marker, C.; Mcmahon, T.; Ricciardi, S.; Salvatore, F.; Vaitsas, G.; Winter, M.; Brown, D.; Davis, C.; Allison, J.; Barlow, R.; Forti, A.; Hart, P.; Jackson, F.; Lafferty, G.; Lyon, A.; Savvas, N.; Weatherall, J.; Williams, J.; Farbin, A.; Jawahery, A.; Lillard, V.; Roberts, D.; Blaylock, G.; Dallapiccola, C.; Flood, K.; Hertzbach, S.; Kofler, R.; Koptchev, V.; Moore, T.; Staengle, H.; Willocq, S.; Cowan, R.; Sciolla, G.; Taylor, F.; Yamamoto, R.; Milek, M.; Patel, P.; Palombo, F.; Bauer, J.; Cremaldi, L.; Eschenburg, V.; Kroeger, R.; Reidy, J.; Sanders, D.; Summers, D.; Zhao, H.; Hast, C.; Taras, P.; Nicholson, H.; Cartaro, C.; Cavallo, N.; De Nardo, G.; Fabozzi, F.; Gatto, C.; Lista, L.; Paolucci, P.; Piccolo, D.; Sciacca, C.; Losecco, J.; Alsmiller, J.; Gabriel, T.; Brau, B.; Brau, J.; Frey, R.; Iwasaki, M.; Potter, C.; Sinev, N.; Strom, D.; Torrence, E.; Colecchia, F.; Dorigo, A.; Galeazzi, F.; Margoni, M.; Morandin, M.; Posocco, M.; Rotondo, M.; Simonetto, F.; Stroili, R.; Tiozzo, G.; Voci, C.; Benayoun, M.; Briand, H.; Chauveau, J.; David, P.; de la Vaissière, C.; Del Buono, L.; Hamon, O.; Leruste, P.; Ocariz, J.; Pivk, M.; Roos, L.; Stark, J.; Manfredi, P.; Re, V.; Speziali, V.; Gladney, L.; Guo, Q.; Panetta, J.; Angelini, C.; Batignani, G.; Bettarini, S.; Bondioli, M.; Bucci, F.; Calderini, G.; Campagna, E.; Carpinelli, M.; Forti, F.; Giorgi, M.; Lusiani, A.; Marchiori, G.; Martinez Vidal, F.; Morganti, M.; Neri, N.; Paoloni, E.; Rama, M.; Rizzo, G.; Sandrelli, F.; Triggiani, G.; Walsh, J.; Haire, M.; Judd, D.; Paick, K.; Turnbull, L.; Wagoner, D.; Danielson, N.; Elmer, P.; Lu, C.; Miftakov, V.; Olsen, J.; Smith, A.; Tumanov, A.; Varnes, E.; Bellini, F.; Cavoto, G.; del Re, D.; Faccini, R.; Ferrarotto, F.; Ferroni, F.; Gaspero, M.; Leonardi, E.; Mazzoni, M.; Morganti, S.; Piredda, G.; Safai Tehrani, F.; Serra, M.; Voena, C.; Christ, S.; Wagner, G.; Waldi, R.; Adye, T.; De Groot, N.; Franek, B.; Geddes, N.; Gopal, G.; Olaiya, E.; Xella, S.; Aleksan, R.; Emery, S.; Gaidot, A.; Giraud, P.; Hamel de Monchenault, G.; Kozanecki, W.; Langer, M.; London, G.; Mayer, B.; Schott, G.; Serfass, B.; Vasseur, G.; Yeche, C.; Zito, M.; Purohit, M.; Yumiceva, F.; Weidemann, A.; Abe, K.; Aston, D.; Bartoldus, R.; Berger, N.; Boyarski, A.; Buchmueller, O.; Convery, M.; Coupal, D.; Dong, D.; Dorfan, J.; Dunwoodie, W.; Field, R.; Glanzman, T.; Gowdy, S.; Grauges Pous, E.; Hadig, T.; Halyo, V.; Himel, T.; Hryn’Ova, T.; Huffer, M.; Innes, W.; Jessop, C.; Kelsey, M.; Kim, P.; Kocian, M.; Langenegger, U.; Leith, D.; Luitz, S.; Luth, V.; Lynch, H.; Marsiske, H.; Menke, S.; Messner, R.; Muller, D.; O’Grady, C.; Ozcan, V.; Perazzo, A.; Perl, M.; Petrak, S.; Ratcliff, B.; Robertson, S.; Roodman, A.; Salnikov, A.; Schietinger, T.; Schindler, R.; Schwiening, J.; Simi, G.; Snyder, A.; Soha, A.; Stelzer, J.; Su, D.; Sullivan, M.; Tanaka, H.; Va’Vra, J.; Wagner, S.; Weaver, M.; Weinstein, A.; Wisniewski, W.; Wright, D.; Young, C.; Burchat, P.; Cheng, C.; Meyer, T.; Roat, C.; Bugg, W.; Krishnamurthy, M.; Spanier, S.; Izen, J.; Kitayama, I.; Lou, X.; Bianchi, F.; Bona, M.; Gamba, D.; Bosisio, L.; Della Ricca, G.; Dittongo, S.; Lanceri, L.; Poropat, P.; Vitale, L.; Vuagnin, G.; Henderson, R.; Panvini, R.; Banerjee, S.; Brown, C.; Fortin, D.; Jackson, P.; Kowalewski, R.; Roney, J.; Band, H.; Dasu, S.; Datta, M.; Eichenbaum, A.; Hu, H.; Johnson, J.; Liu, R.; Di Lodovico, F.; Mohapatra, A.; Pan, Y.; Prepost, R.; Sekula, S.; von Wimmersperg Toeller, J.; Wu, J.; Wu, S.; Yu, Z.; Neal, H.

doi:10.1103/PhysRevD.67.072002

We measure the B0 lifetime τB0 and the B 0-B̄0 oscillation frequency Δmd with a sample of approximately 14000 exclusively reconstructed B 0→D*-ℓ+vℓ signal events, selected from 23 million BB̄ pairs recorded at the Y(45) resonance with the BABAR detector at the Stanford Linear Accelerator Center. The decay position of the other B is determined with the remaining tracks in the event, and its b-quark flavor at the time of decay is determined with a tagging algorithm that exploits the correlation between the flavor of the b quark and the charges of its decay products. The lifetime and oscillation frequencies are measured simultaneously with an unbinned maximum-likelihood fit that uses, for each event, the measured difference in decay times of the two B mesons (Δt), the calculated uncertainty on Δt, the signal and background probabilities, and b-quark tagging information for the other B. The results are τB0=(1.523-0.023+0.024±0.022) ps and Δmd=(0.492±0.018 ±0.013) ps-1. The statistical correlation coefficient between τB0 and Δm d is -0.22.

Simultaneous measurement of the B0 meson lifetime and mixing frequency with B0→D*-l+νl decays / B. Aubert, R. Barate, D. Boutigny, J. Gaillard, A. Hicheur, Y. Karyotakis, J. Lees, P. Robbe, V. Tisserand, A. Zghiche, A. Palano, A. Pompili, J. Chen, N. Qi, G. Rong, P. Wang, Y. Zhu, G. Eigen, I. Ofte, B. Stugu, G. Abrams, A. Borgland, A. Breon, D. Brown, J. Button-Shafer, R. Cahn, E. Charles, M. Gill, A. Gritsan, Y. Groysman, R. Jacobsen, R. Kadel, J. Kadyk, L. Kerth, Y. Kolomensky, J. Kral, C. LeClerc, M. Levi, G. Lynch, L. Mir, P. Oddone, T. Orimoto, M. Pripstein, N. Roe, A. Romosan, M. Ronan, V. Shelkov, A. Telnov, W. Wenzel, T. Harrison, C. Hawkes, D. Knowles, S. O’Neale, R. Penny, A. Watson, N. Watson, T. Deppermann, K. Goetzen, H. Koch, B. Lewandowski, M. Pelizaeus, K. Peters, H. Schmuecker, M. Steinke, N. Barlow, W. Bhimji, J. Boyd, N. Chevalier, P. Clark, W. Cottingham, C. Mackay, F. Wilson, C. Hearty, T. Mattison, J. McKenna, D. Thiessen, S. Jolly, P. Kyberd, A. McKemey, V. Blinov, A. Bukin, A. Buzykaev, V. Golubev, V. Ivanchenko, A. Korol, E. Kravchenko, A. Onuchin, S. Serednyakov, Y. Skovpen, A. Yushkov, D. Best, M. Chao, D. Kirkby, A. Lankford, M. Mandelkern, S. McMahon, R. Mommsen, D. Stoker, C. Buchanan, H. Hadavand, E. Hill, D. MacFarlane, H. Paar, S. Rahatlou, G. Raven, U. Schwanke, V. Sharma, J. Berryhill, C. Campagnari, B. Dahmes, N. Kuznetsova, S. Levy, O. Long, A. Lu, M. Mazur, J. Richman, W. Verkerke, J. Beringer, A. Eisner, M. Grothe, C. Heusch, W. Lockman, T. Pulliam, T. Schalk, R. Schmitz, B. Schumm, A. Seiden, M. Turri, W. Walkowiak, D. Williams, M. Wilson, J. Albert, E. Chen, G. Dubois-Felsmann, A. Dvoretskii, D. Hitlin, I. Narsky, F. Porter, A. Ryd, A. Samuel, S. Yang, S. Jayatilleke, G. Mancinelli, B. Meadows, M. Sokoloff, T. Barillari, F. Blanc, P. Bloom, W. Ford, U. Nauenberg, A. Olivas, P. Rankin, J. Roy, J. Smith, W. van Hoek, L. Zhang, J. Harton, T. Hu, A. Soffer, W. Toki, R. Wilson, J. Zhang, D. Altenburg, T. Brandt, J. Brose, T. Colberg, M. Dickopp, R. Dubitzky, A. Hauke, E. Maly, R. Müller-Pfefferkorn, R. Nogowski, S. Otto, K. Schubert, R. Schwierz, B. Spaan, L. Wilden, D. Bernard, G. Bonneaud, F. Brochard, J. Cohen-Tanugi, S. T’Jampens, C. Thiebaux, G. Vasileiadis, M. Verderi, A. Anjomshoaa, R. Bernet, A. Khan, D. Lavin, F. Muheim, S. Playfer, J. Swain, J. Tinslay, M. Falbo, C. Borean, C. Bozzi, L. Piemontese, A. Sarti, E. Treadwell, F. Anulli, R. Baldini-Ferroli, A. Calcaterra, R. de Sangro, D. Falciai, G. Finocchiaro, P. Patteri, I. Peruzzi, M. Piccolo, A. Zallo, S. Bagnasco, A. Buzzo, R. Contri, G. Crosetti, M. Lo Vetere, M. Macri, M. Monge, S. Passaggio, F. Pastore, C. Patrignani, E. Robutti, A. Santroni, S. Tosi, S. Bailey, M. Morii, G. Grenier, U. Mallik, J. Cochran, H. Crawley, J. Lamsa, W. Meyer, S. Prell, E. Rosenberg, J. Yi, M. Davier, G. Grosdidier, A. Höcker, H. Lacker, S. Laplace, F. Le Diberder, V. Lepeltier, A. Lutz, T. Petersen, S. Plaszczynski, M. Schune, L. Tantot, G. Wormser, R. Bionta, V. Brigljević, D. Lange, K. van Bibber, D. Wright, A. Bevan, J. Fry, E. Gabathuler, R. Gamet, M. George, M. Kay, D. Payne, R. Sloane, C. Touramanis, M. Aspinwall, D. Bowerman, P. Dauncey, U. Egede, I. Eschrich, G. Morton, J. Nash, P. Sanders, G. Taylor, J. Back, G. Bellodi, P. Dixon, P. Harrison, H. Shorthouse, P. Strother, P. Vidal, G. Cowan, H. Flaecher, S. George, M. Green, A. Kurup, C. Marker, T. McMahon, S. Ricciardi, F. Salvatore, G. Vaitsas, M. Winter, D. Brown, C. Davis, J. Allison, R. Barlow, A. Forti, P. Hart, F. Jackson, G. Lafferty, A. Lyon, N. Savvas, J. Weatherall, J. Williams, A. Farbin, A. Jawahery, V. Lillard, D. Roberts, G. Blaylock, C. Dallapiccola, K. Flood, S. Hertzbach, R. Kofler, V. Koptchev, T. Moore, H. Staengle, S. Willocq, R. Cowan, G. Sciolla, F. Taylor, R. Yamamoto, M. Milek, P. Patel, F. Palombo, J. Bauer, L. Cremaldi, V. Eschenburg, R. Kroeger, J. Reidy, D. Sanders, D. Summers, H. Zhao, C. Hast, P. Taras, H. Nicholson, C. Cartaro, N. Cavallo, G. De Nardo, F. Fabozzi, C. Gatto, L. Lista, P. Paolucci, D. Piccolo, C. Sciacca, J. LoSecco, J. Alsmiller, T. Gabriel, B. Brau, J. Brau, R. Frey, M. Iwasaki, C. Potter, N. Sinev, D. Strom, E. Torrence, F. Colecchia, A. Dorigo, F. Galeazzi, M. Margoni, M. Morandin, M. Posocco, M. Rotondo, F. Simonetto, R. Stroili, G. Tiozzo, C. Voci, M. Benayoun, H. Briand, J. Chauveau, P. David, C. de la Vaissière, L. Del Buono, O. Hamon, P. Leruste, J. Ocariz, M. Pivk, L. Roos, J. Stark, P. Manfredi, V. Re, V. Speziali, L. Gladney, Q. Guo, J. Panetta, C. Angelini, G. Batignani, S. Bettarini, M. Bondioli, F. Bucci, G. Calderini, E. Campagna, M. Carpinelli, F. Forti, M. Giorgi, A. Lusiani, G. Marchiori, F. Martinez-Vidal, M. Morganti, N. Neri, E. Paoloni, M. Rama, G. Rizzo, F. Sandrelli, G. Triggiani, J. Walsh, M. Haire, D. Judd, K. Paick, L. Turnbull, D. Wagoner, N. Danielson, P. Elmer, C. Lu, V. Miftakov, J. Olsen, A. Smith, A. Tumanov, E. Varnes, F. Bellini, G. Cavoto, D. del Re, R. Faccini, F. Ferrarotto, F. Ferroni, M. Gaspero, E. Leonardi, M. Mazzoni, S. Morganti, G. Piredda, F. Safai Tehrani, M. Serra, C. Voena, S. Christ, G. Wagner, R. Waldi, T. Adye, N. De Groot, B. Franek, N. Geddes, G. Gopal, E. Olaiya, S. Xella, R. Aleksan, S. Emery, A. Gaidot, P. Giraud, G. Hamel de Monchenault, W. Kozanecki, M. Langer, G. London, B. Mayer, G. Schott, B. Serfass, G. Vasseur, C. Yeche, M. Zito, M. Purohit, F. Yumiceva, A. Weidemann, K. Abe, D. Aston, R. Bartoldus, N. Berger, A. Boyarski, O. Buchmueller, M. Convery, D. Coupal, D. Dong, J. Dorfan, W. Dunwoodie, R. Field, T. Glanzman, S. Gowdy, E. Grauges-Pous, T. Hadig, V. Halyo, T. Himel, T. Hryn’ova, M. Huffer, W. Innes, C. Jessop, M. Kelsey, P. Kim, M. Kocian, U. Langenegger, D. Leith, S. Luitz, V. Luth, H. Lynch, H. Marsiske, S. Menke, R. Messner, D. Muller, C. O’Grady, V. Ozcan, A. Perazzo, M. Perl, S. Petrak, B. Ratcliff, S. Robertson, A. Roodman, A. Salnikov, T. Schietinger, R. Schindler, J. Schwiening, G. Simi, A. Snyder, A. Soha, J. Stelzer, D. Su, M. Sullivan, H. Tanaka, J. Va’vra, S. Wagner, M. Weaver, A. Weinstein, W. Wisniewski, D. Wright, C. Young, P. Burchat, C. Cheng, T. Meyer, C. Roat, W. Bugg, M. Krishnamurthy, S. Spanier, J. Izen, I. Kitayama, X. Lou, F. Bianchi, M. Bona, D. Gamba, L. Bosisio, G. Della Ricca, S. Dittongo, L. Lanceri, P. Poropat, L. Vitale, G. Vuagnin, R. Henderson, R. Panvini, S. Banerjee, C. Brown, D. Fortin, P. Jackson, R. Kowalewski, J. Roney, H. Band, S. Dasu, M. Datta, A. Eichenbaum, H. Hu, J. Johnson, R. Liu, F. Di Lodovico, A. Mohapatra, Y. Pan, R. Prepost, S. Sekula, J. von Wimmersperg-Toeller, J. Wu, S. Wu, Z. Yu, H. Neal. - In: PHYSICAL REVIEW D. - ISSN 0556-2821. - 67:7(2003).

Simultaneous measurement of the B0 meson lifetime and mixing frequency with B0→D*-l+νl decays

B. Aubert;R. Barate;D. Boutigny;J. Gaillard;A. Hicheur;Y. Karyotakis;J. Lees;P. Robbe;V. Tisserand;A. Zghiche;A. Palano;A. Pompili;J. Chen;N. Qi;G. Rong;P. Wang;Y. Zhu;G. Eigen;I. Ofte;B. Stugu;G. Abrams;A. Borgland;A. Breon;D. Brown;J. Button Shafer;R. Cahn;E. Charles;M. Gill;A. Gritsan;Y. Groysman;R. Jacobsen;R. Kadel;J. Kadyk;L. Kerth;Y. Kolomensky;J. Kral;C. LeClerc;M. Levi;G. Lynch;L. Mir;P. Oddone;T. Orimoto;M. Pripstein;N. Roe;A. Romosan;M. Ronan;V. Shelkov;A. Telnov;W. Wenzel;T. Harrison;C. Hawkes;D. Knowles;S. O’Neale;R. Penny;A. Watson;N. Watson;T. Deppermann;K. Goetzen;H. Koch;B. Lewandowski;M. Pelizaeus;K. Peters;H. Schmuecker;M. Steinke;N. Barlow;W. Bhimji;J. Boyd;N. Chevalier;P. Clark;W. Cottingham;C. Mackay;F. Wilson;C. Hearty;T. Mattison;J. McKenna;D. Thiessen;S. Jolly;P. Kyberd;A. McKemey;V. Blinov;A. Bukin;A. Buzykaev;V. Golubev;V. Ivanchenko;A. Korol;E. Kravchenko;A. Onuchin;S. Serednyakov;Y. Skovpen;A. Yushkov;D. Best;M. Chao;D. Kirkby;A. Lankford;M. Mandelkern;S. McMahon;R. Mommsen;D. Stoker;C. Buchanan;H. Hadavand;E. Hill;D. MacFarlane;H. Paar;S. Rahatlou;G. Raven;U. Schwanke;V. Sharma;J. Berryhill;C. Campagnari;B. Dahmes;N. Kuznetsova;S. Levy;O. Long;A. Lu;M. Mazur;J. Richman;W. Verkerke;J. Beringer;A. Eisner;M. Grothe;C. Heusch;W. Lockman;T. Pulliam;T. Schalk;R. Schmitz;B. Schumm;A. Seiden;M. Turri;W. Walkowiak;D. Williams;M. Wilson;J. Albert;E. Chen;G. Dubois Felsmann;A. Dvoretskii;D. Hitlin;I. Narsky;F. Porter;A. Ryd;A. Samuel;S. Yang;S. Jayatilleke;G. Mancinelli;B. Meadows;M. Sokoloff;T. Barillari;F. Blanc;P. Bloom;W. Ford;U. Nauenberg;A. Olivas;P. Rankin;J. Roy;J. Smith;W. van Hoek;L. Zhang;J. Harton;T. Hu;A. Soffer;W. Toki;R. Wilson;J. Zhang;D. Altenburg;T. Brandt;J. Brose;T. Colberg;M. Dickopp;R. Dubitzky;A. Hauke;E. Maly;R. Müller Pfefferkorn;R. Nogowski;S. Otto;K. Schubert;R. Schwierz;B. Spaan;L. Wilden;D. Bernard;G. Bonneaud;F. Brochard;J. Cohen Tanugi;S. T’Jampens;C. Thiebaux;G. Vasileiadis;M. Verderi;A. Anjomshoaa;R. Bernet;A. Khan;D. Lavin;F. Muheim;S. Playfer;J. Swain;J. Tinslay;M. Falbo;C. Borean;C. Bozzi;L. Piemontese;A. Sarti;E. Treadwell;F. Anulli;R. Baldini Ferroli;A. Calcaterra;R. de Sangro;D. Falciai;G. Finocchiaro;P. Patteri;I. Peruzzi;M. Piccolo;A. Zallo;S. Bagnasco;A. Buzzo;R. Contri;G. Crosetti;M. Lo Vetere;M. Macri;M. Monge;S. Passaggio;F. Pastore;C. Patrignani;E. Robutti;A. Santroni;S. Tosi;S. Bailey;M. Morii;G. Grenier;U. Mallik;J. Cochran;H. Crawley;J. Lamsa;W. Meyer;S. Prell;E. Rosenberg;J. Yi;M. Davier;G. Grosdidier;A. Höcker;H. Lacker;S. Laplace;F. Le Diberder;V. Lepeltier;A. Lutz;T. Petersen;S. Plaszczynski;M. Schune;L. Tantot;G. Wormser;R. Bionta;V. Brigljević;D. Lange;K. van Bibber;D. Wright;A. Bevan;J. Fry;E. Gabathuler;R. Gamet;M. George;M. Kay;D. Payne;R. Sloane;C. Touramanis;M. Aspinwall;D. Bowerman;P. Dauncey;U. Egede;I. Eschrich;G. Morton;J. Nash;P. Sanders;G. Taylor;J. Back;G. Bellodi;P. Dixon;P. Harrison;H. Shorthouse;P. Strother;P. Vidal;G. Cowan;H. Flaecher;S. George;M. Green;A. Kurup;C. Marker;T. McMahon;S. Ricciardi;F. Salvatore;G. Vaitsas;M. Winter;D. Brown;C. Davis;J. Allison;R. Barlow;A. Forti;P. Hart;F. Jackson;G. Lafferty;A. Lyon;N. Savvas;J. Weatherall;J. Williams;A. Farbin;A. Jawahery;V. Lillard;D. Roberts;G. Blaylock;C. Dallapiccola;K. Flood;S. Hertzbach;R. Kofler;V. Koptchev;T. Moore;H. Staengle;S. Willocq;R. Cowan;G. Sciolla;F. Taylor;R. Yamamoto;M. Milek;P. Patel;F. Palombo;J. Bauer;L. Cremaldi;V. Eschenburg;R. Kroeger;J. Reidy;D. Sanders;D. Summers;H. Zhao;C. Hast;P. Taras;H. Nicholson;C. Cartaro;N. Cavallo;G. De Nardo;F. Fabozzi;C. Gatto;L. Lista;P. Paolucci;D. Piccolo;C. Sciacca;J. LoSecco;J. Alsmiller;T. Gabriel;B. Brau;J. Brau;R. Frey;M. Iwasaki;C. Potter;N. Sinev;D. Strom;E. Torrence;F. Colecchia;A. Dorigo;F. Galeazzi;M. Margoni;M. Morandin;M. Posocco;M. Rotondo;F. Simonetto;R. Stroili;G. Tiozzo;C. Voci;M. Benayoun;H. Briand;J. Chauveau;P. David;C. de la Vaissière;L. Del Buono;O. Hamon;P. Leruste;J. Ocariz;M. Pivk;L. Roos;J. 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2003

Abstract

We measure the B0 lifetime τB0 and the B 0-B̄0 oscillation frequency Δmd with a sample of approximately 14000 exclusively reconstructed B 0→D*-ℓ+vℓ signal events, selected from 23 million BB̄ pairs recorded at the Y(45) resonance with the BABAR detector at the Stanford Linear Accelerator Center. The decay position of the other B is determined with the remaining tracks in the event, and its b-quark flavor at the time of decay is determined with a tagging algorithm that exploits the correlation between the flavor of the b quark and the charges of its decay products. The lifetime and oscillation frequencies are measured simultaneously with an unbinned maximum-likelihood fit that uses, for each event, the measured difference in decay times of the two B mesons (Δt), the calculated uncertainty on Δt, the signal and background probabilities, and b-quark tagging information for the other B. The results are τB0=(1.523-0.023+0.024±0.022) ps and Δmd=(0.492±0.018 ±0.013) ps-1. The statistical correlation coefficient between τB0 and Δm d is -0.22.

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	Settori scientifico-disciplinari dell'articolo
	
				Settore FIS/04 - Fisica Nucleare e Subnucleare
			
	Data di pubblicazione
	
				2003
			
	Rivista in ANCE
	
				PHYSICAL REVIEW D
			
	DOI
	
				https://dx.doi.org/10.1103/PhysRevD.67.072002
			
	Tipologia
	
				Article (author)
			
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				01 - Articolo su periodico

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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/183153

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