Observation of time-dependent CP violation in B0→η′K0 decays and improved measurements of CP asymmetries in B0→φK0, KS0KS0KS0 and B0→J/ψK0 decays

被引：116

作者：

Chen, K. -F. ^{[1
]}

Hara, K.

Hazumi, M.

Higuchi, T.

Miyabayashi, K.

Nakahama, Y.

Sumisawa, K.

Tajima, O.

Ushiroda, Y.

Yusa, Y.

Abe, K.

Adachi, I.

Aihara, H.

Anipko, D.

Arinstein, K.

Aulchenko, V.

Aushev, T.

Aziz, T.

Bakich, A. M.

Balagura, V.

Banerjee, S.

Barberio, E.

Barbero, M.

Bay, A.

Belous, K.

Bitenc, U.

Bizjak, I.

Blyth, S.

Bondar, A.

Bozek, A.

Bracko, M.

Brodzicka, J.

Browder, T. E.

Chang, P.

Chao, Y.

Chen, A.

Chen, W. T.

Cheon, B. G.

Chistov, R.

Choi, S. -K.

Choi, Y.

Choi, Y. K.

Chuvikov, A.

Cole, S.

Dalseno, J.

Danilov, M.

Dash, M.

Dragic, J.

Drutskoy, A.

机构：

[1] Natl Taiwan Univ, Dept Phys, Taipei 10764, Taiwan

[2] Natl United Univ, Miaoli, Taiwan

[3] H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland

[4] Nippon Dent Univ, Niigata, Japan

[5] Niigata Univ, Niigata, Japan

[6] Osaka City Univ, Osaka 558, Japan

[7] Osaka Univ, Osaka, Japan

[8] Panjab Univ, Chandigarh 160014, India

[9] Peking Univ, Beijing 100871, Peoples R China

[10] Princeton Univ, Princeton, NJ 08544 USA

[11] Brookhaven Natl Lab, Res Ctr, RIKEN, Upton, NY 11973 USA

[12] Saga Univ, Saga 840, Japan

[13] Univ Sci & Technol China, Hefei 230026, Peoples R China

[14] Seoul Natl Univ, Seoul, South Korea

[15] Shinshu Univ, Nagano, Japan

[16] Sungkyunkwan Univ, Suwon 440746, South Korea

[17] Univ Sydney, Sydney, NSW 2006, Australia

[18] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India

[19] Toho Univ, Funabashi, Chiba 274, Japan

[20] Tohoku Gakuin Univ, Tagajo, Miyagi 985, Japan

[21] Tohoku Univ, Sendai, Miyagi 980, Japan

[22] Univ Tokyo, Dept Phys, Tokyo, Japan

[23] Tokyo Inst Technol, Tokyo, Japan

[24] Tokyo Metropolitan Univ, Tokyo 158, Japan

[25] Tokyo Univ Agr & Technol, Tokyo, Japan

[26] Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA

[27] Yonsei Univ, Seoul, South Korea

[28] Budker Inst Nucl Phys, Novosibirsk 630090, Russia

[29] Chiba Univ, Chiba, Japan

[30] Chonnam Natl Univ, Kwangju 500757, South Korea

[31] Univ Cincinnati, Cincinnati, OH 45221 USA

[32] Grad Univ Adv Studies, Hayama, Japan

[33] Gyeongsang Natl Univ, Chinju, South Korea

[34] Univ Hawaii, Honolulu, HI 96822 USA

[35] KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki, Japan

[36] Hiroshima Inst Technol, Hiroshima, Japan

[37] Univ Illinois, Urbana, IL 61801 USA

[38] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China

[39] Inst High Energy Phys, Vienna, Austria

[40] Inst High Energy Phys, Protvino, Russia

[41] Inst Theoret & Expt Phys, Moscow 117259, Russia

[42] Jozef Stefan Inst, Ljubljana, Slovenia

[43] Kanagawa Univ, Yokohama, Kanagawa, Japan

[44] Korea Univ, Seoul 136701, South Korea

[45] Kyungpook Natl Univ, Taegu 702701, South Korea

[46] Swiss Fed Inst Technol, EPFL, Lausanne, Switzerland

[47] Univ Ljubljana, Ljubljana, Slovenia

[48] Univ Maribor, SLO-2000 Maribor, Slovenia

[49] Univ Melbourne, Melbourne, Vic, Australia

[50] Nagoya Univ, Nagoya, Aichi, Japan

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.98.031802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present improved measurements of CP-violation parameters in B-0 -> phi K-0, eta K-'(0), (KSKSKS0)-K-0-K-0 decays based on a sample of 535 x 10(6) B (B) over bar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB energy-asymmetric e(+)e(-) collider. We obtain sin2 phi(eff)(1) = +0.64 +/- 0.10(stat) +/- 0.04(syst) for B-0 -> eta K-'(0), +0.50 +/- 0.21(stat) +/- 0.06(syst) for B-0 ->phi K-0, and +0.30 +/- 0.32(stat) +/- 0.08(syst) for B-0 -> (KSKSKS0)-K-0-K-0 decays. We have observed CP violation in the B-0 -> eta K-'(0) decay with a significance of 5.6 standard deviations. We also perform an improved measurement of CP asymmetries in B-0 -> J/psi K-0 decays and obtain sin2 phi(1) = +0.642 +/- 0.031(stat) +/- 0.017(syst).

引用

页数：6

共 34 条

[1] The Belle detector [J].

Abashian, A ;

Abe, K ;

Abe, R ;

Abe, K ;

Adachi, I ;

Ahn, BS ;

Ahn, HS ;

Aihara, H ;

Akatsu, M ;

Akhmetshin, R ;

Alexander, JP ;

Alimonti, G ;

An, Q ;

Aoki, K ;

Asai, M ;

Asano, Y ;

Aso, T ;

Aulchenko, V ;

Bakich, AM ;

Banas, E ;

Behari, S ;

Behera, PK ;

Beiline, D ;

Bondar, A ;

Bozek, A ;

Browder, TE ;

Casey, BCK ;

Chang, P ;

Chang, YH ;

Chao, Y ;

Chen, HS ;

Chen, HF ;

Chen, YQ ;

Cheon, BG ;

Chidzik, S ;

Choi, S ;

Choi, Y ;

Dneprovsky, L ;

Doi, Y ;

Dong, LY ;

Dragic, J ;

Drutskoy, A ;

Eidelman, S ;

Enomoto, R ;

Everton, CW ;

Fang, F ;

Fujii, H ;

Fujimoto, K ;

Fujita, Y ;

Fukunaga, C .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2002, 479 (01) :117-232

[2] Improved measurement of CP-violation parameters sin2φ1 and |λ|, B meson lifetimes, and B0-(B)over-bar0 mixing parameter Δmd -: art. no. 072003 [J].

Abe, K ;

Adachi, I ;

Aihara, H ;

Akatsu, M ;

Asano, Y ;

Aushev, T ;

Aziz, T ;

Bahinipati, S ;

Bakich, AM ;

Ban, Y ;

Banerjee, S ;

Bay, A ;

Bedny, I ;

Bitenc, U ;

Bizjak, I ;

Blyth, S ;

Bondar, A ;

Bozek, A ;

Bracko, M ;

Brodzicka, J ;

Browder, TE ;

Chang, P ;

Chao, Y ;

Chen, A ;

Chen, KF ;

Chen, WT ;

Cheon, BG ;

Chistov, R ;

Choi, SK ;

Choi, Y ;

Chuvikov, A ;

Cole, S ;

Dalseno, J ;

Danilov, M ;

Dash, M ;

Drutskoy, A ;

Eidelman, S ;

Eiges, V ;

Fang, F ;

Fratina, S ;

Gabyshev, N ;

Garmash, A ;

Gershon, T ;

Go, A ;

Gokhroo, G ;

Golob, B ;

Haba, J ;

Hara, K ;

Hastings, NC .

PHYSICAL REVIEW D, 2005, 71 (07) :1-12

[3]

ABE K, HEPEX0507037

[4] Resonances in J/ψ → φπ+π- and φK+K- [J].

Ablikim, M ;

Bai, JZ ;

Ban, Y ;

Bian, JG ;

Bugg, D ;

Cai, X ;

Chang, JF ;

Chen, HF ;

Chen, HS ;

Chen, HX ;

Chen, JC ;

Chen, J ;

Chen, ML ;

Chen, YB ;

Chi, SP ;

Chu, YP ;

Cui, XZ ;

Dai, HL ;

Dai, YS ;

Deng, ZY ;

Dong, LY ;

Dong, QF ;

Du, SX ;

Du, ZZ ;

Fang, J ;

Fang, SS ;

Fu, CD ;

Fu, HY ;

Gao, CS ;

Gao, YN ;

Gong, MY ;

Gong, WX ;

Gu, SD ;

Guo, Y ;

Guo, YQ ;

Guo, ZJ ;

Harris, FA ;

He, KL ;

He, M ;

He, X ;

Heng, YK ;

Hu, HM ;

Hu, T ;

Huang, GS ;

Huang, XP ;

Huang, XT ;

Ji, XB ;

Jiang, CH ;

Jiang, XS .

PHYSICS LETTERS B, 2005, 607 (3-4) :243-253

[5] Observation of CP violation in B→η/K0 decays [J].

Aubert, B. ;

Bona, M. ;

Boutigny, D. ;

Couderc, F. ;

Karyotakis, Y. ;

Lees, J. P. ;

Poireau, V. ;

Tisserand, V. ;

Zghiche, A. ;

Grauges, E. ;

Palano, A. ;

Chen, J. C. ;

Qi, N. D. ;

Rong, G. ;

Wang, P. ;

Zhu, Y. S. ;

Eigen, G. ;

Ofte, I. ;

Stugu, B. ;

Abrams, G. S. ;

Battaglia, M. ;

Brown, D. N. ;

Button-Shafer, J. ;

Cahn, R. N. ;

Charles, E. ;

Gill, M. S. ;

Groysman, Y. ;

Jacobsen, R. G. ;

Kadyk, J. A. ;

Kerth, L. T. ;

Kolomensky, Yu. G. ;

Kukartsev, G. ;

Pegna, D. Lopes ;

Lynch, G. ;

Mir, L. M. ;

Orimoto, T. J. ;

Pripstein, M. ;

Roe, N. A. ;

Ronan, M. T. ;

Wenzel, W. A. ;

Sanchez, P. del Amo ;

Barrett, M. ;

Ford, K. E. ;

Harrison, T. J. ;

Hart, A. J. ;

Hawkes, C. M. ;

Watson, A. T. ;

Held, T. ;

Koch, H. ;

Lewandowski, B. .

PHYSICAL REVIEW LETTERS, 2007, 98 (03)

[6] Branching fraction and CP asymmetries of B0→KS0KS0KS0 -: art. no. 011801 [J].

Aubert, B ;

Barate, R ;

Boutigny, D ;

Couderc, F ;

Karyotakis, Y ;

Lees, JP ;

Poireau, V ;

Tissserand, V ;

Zghiche, A ;

Grauges-Pous, E ;

Palano, A ;

Pompili, A ;

Chen, JC ;

Qi, ND ;

Rong, G ;

Wang, P ;

Zhu, YS ;

Eigen, G ;

Ofte, I ;

Stugu, B ;

Abrams, GS ;

Borgland, AW ;

Breon, AB ;

Brown, DN ;

Button-Shafer, J ;

Cahn, RN ;

Charles, E ;

Day, CT ;

Gill, MS ;

Gritsan, AV ;

Groysman, Y ;

Jacobsen, RG ;

Kadel, RW ;

Kadyk, J ;

Kerth, LT ;

Kolomensky, YG ;

Kukartsev, G ;

Lynch, G ;

Mir, LM ;

Oddone, PJ ;

Orimoto, TJ ;

Pripstein, M ;

Roe, NA ;

Ronan, MT ;

Wenzel, WA ;

Barrett, M ;

Ford, KE ;

Harrison, TJ ;

Hart, AJ ;

Hawkes, CM .

PHYSICAL REVIEW LETTERS, 2005, 95 (01)

[7] Measurements of branching fractions and time-dependent CP-violating asymmetries in B → η′K decays -: art. no. 191802 [J].

Aubert, B ;

Barate, R ;

Boutigny, D ;

Couderc, F ;

Karyotakis, Y ;

Lees, JP ;

Poireau, V ;

Tisserand, V ;

Zghiche, A ;

Grauges-Pous, E ;

Palano, A ;

Pompili, A ;

Chen, JC ;

Qi, ND ;

Rong, G ;

Wang, P ;

Zhu, YS ;

Eigen, G ;

Ofte, I ;

Stugu, B ;

Abrams, GS ;

Borgland, AW ;

Breon, AB ;

Brown, DN ;

Button-Shafer, J ;

Cahn, RN ;

Charles, E ;

Day, CT ;

Gill, MS ;

Gritsan, AV ;

Groysman, Y ;

Jacobsen, RG ;

Kadel, RW ;

Kadyk, J ;

Kerth, LT ;

Kolomensky, YG ;

Kukartsev, G ;

Lynch, G ;

Mir, LM ;

Oddone, PJ ;

Orimoto, TJ ;

Pripstein, M ;

Roe, NA ;

Ronan, MT ;

Wenzel, WA ;

Barrett, M ;

Ford, KE ;

Harrison, TJ ;

Hart, AJ ;

Hawkes, CM .

PHYSICAL REVIEW LETTERS, 2005, 94 (19)

[8] Measurement of CP asymmetries in B0→φK0 and B0 → K+ K- Ks0 decays -: art. no. 091102 [J].

Aubert, B ;

Barate, R ;

Boutigny, D ;

Couderc, F ;

Karyotakis, Y ;

Lees, JP ;

Poireau, V ;

Tisserand, V ;

Zghiche, A ;

Grauges-Pous, E ;

Palano, A ;

Pompili, A ;

Chen, JC ;

Qi, ND ;

Rong, G ;

Wang, P ;

Zhu, YS ;

Eigen, G ;

Ofte, I ;

Stugu, B ;

Abrams, GS ;

Borgland, AW ;

Breon, AB ;

Brown, DN ;

Button-Shafer, J ;

Cahn, RN ;

Charles, E ;

Day, CT ;

Gill, MS ;

Gritsan, AV ;

Groysman, Y ;

Jacobsen, RG ;

Kadel, RW ;

Kadyk, J ;

Kerth, LT ;

Kolomensky, YG ;

Kukartsev, G ;

Lynch, G ;

Mir, LM ;

Oddone, PJ ;

Orimoto, TJ ;

Pripstein, M ;

Roe, NA ;

Ronan, MT ;

Wenzel, WA ;

Barrett, M ;

Ford, KE ;

Harrison, TJ ;

Hart, AJ ;

Hawkes, CM .

PHYSICAL REVIEW D, 2005, 71 (09) :1-8

[9] Muon anomalous magnetic moment, lepton flavor violation, and flavor changing neutral current processes in supersymmetric grand unified theory with right-handed neutrinos [J].

Baek, S ;

Goto, T ;

Okada, Y ;

Okumura, K .

PHYSICAL REVIEW D, 2001, 64 (09)

[10] Corrections to sin(2β) from CP asymmetries in B0 → (π0, ρ0, η, η′, φ)KS decays [J].

Beneke, M .

PHYSICS LETTERS B, 2005, 620 (3-4) :143-150

← 1 2 3 4 →