Studies Of B-0-(B)Over-Bar(0) Mixing Properties With Inclusive Dilepton Events

Nc Hastings, K Abe, K Abe,R Abe, T Abe,I Adachi,H Aihara, M Akatsu,Y Asano, T Aso, V Aulchenko,T Aushev,Am Bakich,Y Ban,E Banas, A Bay,I Bedny,I Bizjak,A Bondar, A Bozek, M Bracko, J Brodzicka,Te Browder,Bck Casey,Mc Chang,P Chang, Y Chao,Kf Chen,Bg Cheon,R Chistov,Sk Choi,Y Choi,Yk Choi,M Danilov,Ly Dong,A Drutskoy,S Eidelman, V Eiges,Y Enari,Cw Everton,F Fang,C Fukunaga, N Gabyshev, A Garmash, T Gershon,B Golob,J Haba, C Hagner, F Handa, T Hara,K Hasuko,H Hayashii,M Hazumi, I Higuchi,L Hinz,T Hokuue, Y Hoshi,Ws Hou,Yb Hsiung,Hc Huang, T Igaki,Y Igarashi,T Iijima, K Inami,A Ishikawa, R Itoh,H Iwasaki, Y Iwasaki,Hk Jang,Jh Kang,Js Kang,P Kapusta,Su Kataoka,N Katayama, H Kawai, T Kawasaki,H Kichimi,Dw Kim, Hj Kim,Ho Kim,H Kim,Jh Kim,Sk Kim,K Kinoshita,S Kobayashi,S Korpar,P Krizan,P Krokovny, R Kulasiri, S Kumar,A Kuzmin,Yj Kwon,Js Lange,G Leder,Sh Lee,J Li,Sw Lin, D Liventsev,Rs Lu,J Macnaughton, G Majumder,F Mandl,D Marlow, T Matsuishi,S Matsumoto,T Matsumoto,W Mitaroff, K Miyabayashi,H Miyake,H Miyata,Gr Moloney, T Mori,T Nagamine, Y Nagasaka,T Nakadaira, E Nakano, M Nakao,Jw Nam,Z Natkaniec,S Nishida,O Nitoh,S Noguchi,T Nozaki,S Ogawa, T Ohshima,T Okabe, S Okuno,Sl Olsen, Y Onuki,H Ozaki,P Pakhlov,H Palka,Cw Park, H Park,Ks Park,Ls Peak,Jp Perroud,Le Piilonen,Fj Ronga,M Rozanska, K Rybicki,H Sagawa, S Saitoh, Y Sakai,Tr Sarangi, M Satapathy,A Satpathy,O Schneider,S Schrenk,J Schumann, C Schwanda, S Semenov,K Senyo, R Seuster,Me Sevior,H Shibuya,V Sidorov,Jb Singh, S Stanic, M Staric,A Sugi,A Sugiyama,K Sumisawa,T Sumiyoshi,S Suzuki,Sy Suzuki, T Takahashi,F Takasaki,K Tamai,N Tamura,J Tanaka,M Tanaka,Gn Taylor,Y Teramoto,S Tokuda,T Tomura,K Trabelsi,T Tsuboyama, T Tsukamoto, S Uehara,K Ueno, Y Unno,S Uno, G Varner,Ke Varvell,Cc Wang,Ch Wang,Jg Wang,Mz Wang,Y Watanabe,E Won,Bd Yabsley,Y Yamada,A Yamaguchi, Y Yamashita, Y Yamashita,M Yamauchi, H Yanai,M Yokoyama,Y Yuan, Y Yusa,Cc Zhang,Zp Zhang, Y Zheng,V Zhilich,D Zontar

PHYSICAL REVIEW D（2003）

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摘要

We report a precise determination of the B-0-(B) over bar (0) mixing parameter Deltam(d) based on the time evolution of same-sign and opposite-sign dilepton yields in Y(4S) decays. Data were collected with the Belle detector at KEKB. Using data samples of 29.4 fb(-1) recorded at the Y(4S) resonance and 3.0 fb(-1) recorded at an energy 60 MeV below the resonance, we measure Deltam(d)=[0.503+/-0.008(stat)+/-0.010(syst)] ps(-1). From the same analysis, we also measure the ratio of charged and neutral B meson production at the Y(4S), f(+)/f(0)=1.01+/-0.03(stat)+/-0.09(syst), and CPT violation parameters in B-0-(B) over bar (0) mixing, R(cos theta)=0.00+/-0.12(stat)+/-0.01(syst) and J(cos theta)=0.03+/-0.01(stat)+/-0.03(syst).

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关键词

KEKB,B meson,Resonance,Bar (unit),Particle physics,Physics,Mixing (physics)

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