| Measurement of the b-s(0)-> mu(+) mu(-) branching fraction and effective lifetime and search for b-0 ->mu(+) mu(-) decays | |
| Aaij, R.40; Adeva, B.39; Adinolfi, M.48; Ajaltouni, Z.5; Akar, S.59; Albrecht, J.10; Alessio, F.40; Alexander, M.53; Ali, S.43; Alkhazov, G.31 | |
| 刊名 | Physical review letters
 |
| 2017-05-11 | |
| 卷号 | 118期号:19页码:11 |
| ISSN号 | 0031-9007 |
| DOI | 10.1103/physrevlett.118.191801 |
| 通讯作者 | Aaij, r.() |
| 英文摘要 | A search for the rare decays b-s(0)->mu(+)mu(-) and b-0 -> mu(+)mu(-) is performed at the lhcb experiment using data collected in pp collisions corresponding to a total integrated luminosity of 4.4 fb(-1). an excess of b-s(0) -> mu(+)mu- decays is observed with a significance of 7.8 standard deviations, representing the first observation of this decay in a single experiment. the branching fraction is measured to be b(b-s(0) -> mu(+)mu(-)) = (3.0 +/- 0.6(-0.2)(+)(0.3)) x 10(-9), where the first uncertainty is statistical and the second systematic. the first measurement of the b-s(0) -> mu(+)mu(-) effective lifetime, tau(b-s(0)-> mu(+) mu(-)) = 2.04 +/- 0.44 +/- 0.05 ps, is reported. no significant excess of b-0 -> mu(+)mu(-) decays is found, and a 95% confidence level upper limit, b(b-0 -> mu(+)mu(-) ) < 3.4 x 10(-10), is determined. all results are in agreement with the standard model expectations. |
| WOS关键词 | SUPERSYMMETRY ; RARE ; TOOL ; B-0 |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Multidisciplinary |
| 语种 | 英语 |
| 出版者 | AMER PHYSICAL SOC |
| WOS记录号 | WOS:000401240300003 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2177418 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Aaij, R. |
| 作者单位 | 1.CBPF, Rio De Janeiro, Brazil 2.Univ Fed Rio de Janeiro, Rio de Janeiro, Brazil 3.Tsinghua Univ, Ctr High Energy Phys, Beijing, Peoples R China 4.Univ Savoie Mont Blanc, CNRS IN2P3, LAPP, Annecy Le Vieux, France 5.Clermont Univ, Univ Blaise Pascal, CNRS IN2P3, LPC, Clermont Ferrand, France 6.Aix Marseille Univ, CNRS IN2P3, CPPM, Marseille, France 7.Univ Paris 11, CNRS IN2P3, LAL, Orsay, France 8.Univ Paris Diderot, CNRS IN2P3, LPNHE, Univ Pierre & Marie Curie, Paris, France 9.Rhein Westfal TH Aachen, Phys Inst 1, Aachen, Germany 10.Tech Univ Dortmund, Fak Phys, Dortmund, Germany |
| 推荐引用方式 GB/T 7714 | Aaij, R.,Adeva, B.,Adinolfi, M.,et al. Measurement of the b-s(0)-> mu(+) mu(-) branching fraction and effective lifetime and search for b-0 ->mu(+) mu(-) decays[J]. Physical review letters,2017,118(19):11. |
| APA | Aaij, R..,Adeva, B..,Adinolfi, M..,Ajaltouni, Z..,Akar, S..,...&Zucchelli, S..(2017).Measurement of the b-s(0)-> mu(+) mu(-) branching fraction and effective lifetime and search for b-0 ->mu(+) mu(-) decays.Physical review letters,118(19),11. |
| MLA | Aaij, R.,et al."Measurement of the b-s(0)-> mu(+) mu(-) branching fraction and effective lifetime and search for b-0 ->mu(+) mu(-) decays".Physical review letters 118.19(2017):11. |
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