Observation of time-dependent cp violation in b-0 ->eta k-'(0) decays and improved measurements of cp asymmetries in b-0 ->phi k-0, (ksksks0)-k-0-k-0 and b-0 -> j/psi k-0 decays
文献类型：期刊论文
| 作者 | Chen, K. -F.; Hara, K.; Hazumi, M.; Higuchi, T.; Miyabayashi, K.; Nakahama, Y.; Sumisawa, K.; Tajima, O.; Ushiroda, Y.; Yusa, Y. |
| 刊名 | Physical review letters
 |
| 出版日期 | 2007-01-19 |
| 卷号 | 98期号:3页码:6 |
| ISSN号 | 0031-9007 |
| DOI | 10.1103/physrevlett.98.031802 |
| 通讯作者 | Chen, k. -f.() |
| 英文摘要 | 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). |
| WOS关键词 | B-DECAYS ; BELLE ; PHYSICS |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Multidisciplinary |
| 语种 | 英语 |
| 出版者 | AMERICAN PHYSICAL SOC |
| WOS记录号 | WOS:000243587200016 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2175841 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Chen, K. -F. |
| 作者单位 | 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 |
| 推荐引用方式 GB/T 7714 | Chen, K. -F.,Hara, K.,Hazumi, M.,et al. Observation of time-dependent cp violation in b-0 ->eta k-'(0) decays and improved measurements of cp asymmetries in b-0 ->phi k-0, (ksksks0)-k-0-k-0 and b-0 -> j/psi k-0 decays[J]. Physical review letters,2007,98(3):6. |
| APA | Chen, K. -F..,Hara, K..,Hazumi, M..,Higuchi, T..,Miyabayashi, K..,...&Zupanc, A..(2007).Observation of time-dependent cp violation in b-0 ->eta k-'(0) decays and improved measurements of cp asymmetries in b-0 ->phi k-0, (ksksks0)-k-0-k-0 and b-0 -> j/psi k-0 decays.Physical review letters,98(3),6. |
| MLA | Chen, K. -F.,et al."Observation of time-dependent cp violation in b-0 ->eta k-'(0) decays and improved measurements of cp asymmetries in b-0 ->phi k-0, (ksksks0)-k-0-k-0 and b-0 -> j/psi k-0 decays".Physical review letters 98.3(2007):6. |
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