Authors
B Aubert, R Barate, M Bona, D Boutigny, F Couderc, Y Karyotakis, JP Lees, V Poireau, V Tisserand, A Zghiche, E Graugès, A Palano, JC Chen, ND Qi, G Rong, P Wang, YS Zhu, G Eigen, I Ofte, B Stugu, GS Abrams, M Battaglia, J Button-Shafer, RN Cahn, E Charles, MS Gill, Y Groysman, RG Jacobsen, JA Kadyk, LT Kerth, Yu G Kolomensky, G Kukartsev, G Lynch, LM Mir, TJ Orimoto, M Pripstein, NA Roe, MT Ronan, WA Wenzel, Amo-Sánchez P Del, M Barrett, KE Ford, AJ Hart, TJ Harrison, CM Hawkes, SE Morgan, AT Watson, T Held, H Koch, B Lewandowski, M Pelizaeus, K Peters, T Schroeder, M Steinke, JT Boyd, JP Burke, WN Cottingham, D Walker, DJ Asgeirsson, T Çuhadar-Dönszelmann, BG Fulsom, C Hearty, NS Knecht, TS Mattison, JA Mckenna, A Khan, P Kyberd, M Saleem, DJ Sherwood, L Teodorescu, VE Blinov, AD Bukin, VP Druzhinin, VB Golubev, AP Onuchin, SI Serednyakov, Yu I Skovpen, EP Solodov, YK Todyshev, DS Best, M Bondioli, M Bruinsma, M Chao, S Curry, I Eschrich, D Kirkby, AJ Lankford, P Lund, M Mandelkern, E Martin, RK Mommsen, W Röthel, DP Stoker, S Abachi, C Buchanan, SD Foulkes, JW Gary, O Long, BC Shen, K Wang, L Zhang, HK Hadavand, EJ Hill, HP Paar, S Rahatlou, V Sharma, JW Berryhill, C Campagnari, A Cunha, B Dahmes, TM Hong, D Kovalskyi, JD Richman, TW Beck, AM Eisner, CJ Flacco, CA Heusch, J Kroseberg, WS Lockman, G Nesom, T Schalk, BA Schumm, A Seiden, P Spradlin, DC Williams, MG Wilson, J Albert, E Chen, A Dvoretskii, F Fang, DG Hitlin, I Narsky, T Piatenko, FC Porter, A Ryd, A Samuel, G Mancinelli, BT Meadows, K Mishra, MD Sokoloff, F Blanc, PC Bloom, Si Chen, WT Ford, JF Hirschauer, A Kreisel, M Nagel, U Nauenberg, A Olivas, WO Ruddick
Publication date
2006/7/26
Conference
33rd International Conference on High-Energy Physics, ICHEP 06
Description
CP violation in B0B0bar mixing is characterized by the value of the parameter |q/p| being different from 1, and the Standard Model predicts this difference to be smaller than 10^{-3}. We present a measurement of this parameter using a partial reconstruction of one of the B mesons in the semileptonic channel D*- l+ nu_l, where only the hard lepton and the soft pion from the D*- --> D0bar pi- decay are reconstructed. The flavor of the other B is determined by means of lepton tagging. The determination of |q/p| is then performed with a fit to the proper time difference of the two B decays. We use a luminosity of 200.8 fb^-1, collected at the Y(4S) resonance by the BaBar detector at the PEP-II asymmetrical-energy e+e- collider, in the period 1999-2004. We obtain the preliminary result: |q/p| - 1 = (6.5 +/- 3.4(stat.) +/- 2.0(syst.)) x 10^{-3}
Scholar articles
B Aubert, R Barate, M Bona, D Boutigny, F Couderc… - 33rd International Conference on High-Energy Physics …, 2006