Observation of b ->eta ' k-* and evidence for b+->eta ' p(+)
文献类型：期刊论文
| 作者 | Aubert, B.; Barate, R.; Bona, M.; Boutigny, D.; Couderc, F.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Tisserand, V.; Zghiche, A. |
| 刊名 | Physical review letters
 |
| 出版日期 | 2007-02-02 |
| 卷号 | 98期号:5页码:7 |
| ISSN号 | 0031-9007 |
| DOI | 10.1103/physrevlett.98.051802 |
| 通讯作者 | Aubert, b.() |
| 英文摘要 | We present an observation of b -> eta'k*. the data sample corresponds to 232 x 10(6) bb pairs collected with the babar detector at the pep-ii asymmetric-energy b factory at the stanford linear accelerator center. we measure the branching fractions (in units of 10(-6)) b(b-0 -> eta'k-*0) = 3.8 +/- 1.1 +/- 0.5 and b(b+ -> eta'k*+) = 4.9(-1.7)(+1.9) +/- 0.8, where the first error is statistical and the second systematic. a simultaneous fit results in the observation of b -> eta'k-* with b(b -> eta'k-*) = 4.1(-0.9)(+1.0) +/- 0.5. we also search for b -> eta'rho and eta'f(0)(980)(f(0) -> pi(+) pi(-)) with results and 90% confidence level upper limits b(b+ -> eta'rho(+)) = 8.7(-2.8-1.3)(+3.1+2.3) (< 14), b(b0 -> eta'rho(0)) < 3.7, and b(b-0 -> eta'f(0)(980)(f(0) -> pi(+) pi(-))) < 1.5. charge asymmetries in the channels with significant yields are consistent with zero. |
| WOS关键词 | QCD FACTORIZATION ; DECAY |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000244646100018 |
| 出版者 | AMERICAN PHYSICAL SOC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2175848 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Aubert, B. |
| 作者单位 | 1.Phys Particules Lab, F-74941 Annecy Le Vieux, France 2.Univ Barcelona, Fac Fis, Dept ECM, E-08028 Barcelona, Spain 3.Univ Bari, Dipartmento Fis, I-70126 Bari, Italy 4.Ist Nazl Fis Nucl, I-70126 Bari, Italy 5.Inst High Energy Phys, Beijing 100039, Peoples R China 6.Univ Bergen, Inst Phys, N-5007 Bergen, Norway 7.Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA 8.Univ Calif Berkeley, Berkeley, CA 94720 USA 9.Univ Birmingham, Birmingham B15 2TT, W Midlands, England 10.Ruhr Univ Bochum, Inst Expt Phys, D-44780 Bochum, Germany |
| 推荐引用方式 GB/T 7714 | Aubert, B.,Barate, R.,Bona, M.,et al. Observation of b ->eta ' k-* and evidence for b+->eta ' p(+)[J]. Physical review letters,2007,98(5):7. |
| APA | Aubert, B..,Barate, R..,Bona, M..,Boutigny, D..,Couderc, F..,...&Neal, H..(2007).Observation of b ->eta ' k-* and evidence for b+->eta ' p(+).Physical review letters,98(5),7. |
| MLA | Aubert, B.,et al."Observation of b ->eta ' k-* and evidence for b+->eta ' p(+)".Physical review letters 98.5(2007):7. |
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