Measurement of the tau lepton polarization and r(d*) in the decay (b)over-bar -> d*tau(-)(nu)over-bar(tau) with one-prong hadronic tau decays at belle
文献类型：期刊论文
| 作者 | Hirose, S.52; Iijima, T.52,53; Adachi, I.10,14; Adamczyk, K.58; Aihara, H.81; Al Said, S.36,75; Asner, D. M.63; Atmacan, H.71; Aushev, T.51; Ayad, R.75 |
| 刊名 | Physical review d
 |
| 出版日期 | 2018-01-10 |
| 卷号 | 97期号:1页码:17 |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/physrevd.97.012004 |
| 通讯作者 | Hirose, s.() |
| 英文摘要 | With the full data sample of 772 x 10(6) b (b) over bar pairs recorded by the belle detector at the kekb electron-positron collider, the decay (b) over bar -> d+ tau(-)(nu) over bar (tau) is studied with the hadronic tau decays tau(-) -> pi(-)nu(tau) and tau(-) -> rho(-)nu(tau). the tau polarization p-tau(d*) in two-body hadronic tau decays is measured, as well as the ratio of the branching fractions r(d*) = b((b) over bar -> d*tau(-) (nu) over bar (tau))/b((b) over bar -> d*l(-) (nu) over bar (l),where l(-) denotes an electron or a muon. our results, p-tau (d*) = - 0.38 +/- 0.51(stat)(+0.21)(-0.16) (syst) and r(d*) = 0.270 +/- 0.035(stat)(+0.028)(-0.025)(syst), are consistent with the theoretical predictions of the standard model. the polarization values of p-tau(d*) > +0.5 are excluded at the 90% confidence level. |
| WOS关键词 | TAUONIC B-DECAYS ; DISPERSIVE BOUNDS ; MESON DECAYS ; FORM-FACTORS ; MODEL ; IDENTIFICATION ; DETECTOR ; KEKB |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| WOS类目 | Astronomy & Astrophysics ; Physics, Particles & Fields |
| 语种 | 英语 |
| 出版者 | AMER PHYSICAL SOC |
| WOS记录号 | WOS:000419711200003 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2178246 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Hirose, S. |
| 作者单位 | 1.Univ Basque Country UPV EHU, Bilbao 48080, Spain 2.SB RAS, Budker Inst Nucl Phys, Novosibirsk 630090, Russia 3.Charles Univ Prague, Fac Math & Phys, Prague 12116, Czech Republic 4.Univ Cincinnati, Cincinnati, OH 45221 USA 5.Deutsch Elektr Synchrotron, D-22607 Hamburg, Germany 6.Univ Florida, Gainesville, FL 32611 USA 7.Fu Jen Catholic Univ, Dept Phys, Taipei 24205, Taiwan 8.Justus Liebig Univ Giessen, D-35392 Giessen, Germany 9.Gifu Univ, Gifu 5011193, Japan 10.Grad Univ Adv Studies, SOKENDAI, Hayama 2400193, Japan |
| 推荐引用方式 GB/T 7714 | Hirose, S.,Iijima, T.,Adachi, I.,et al. Measurement of the tau lepton polarization and r(d*) in the decay (b)over-bar -> d*tau(-)(nu)over-bar(tau) with one-prong hadronic tau decays at belle[J]. Physical review d,2018,97(1):17. |
| APA | Hirose, S..,Iijima, T..,Adachi, I..,Adamczyk, K..,Aihara, H..,...&Zupanc, A..(2018).Measurement of the tau lepton polarization and r(d*) in the decay (b)over-bar -> d*tau(-)(nu)over-bar(tau) with one-prong hadronic tau decays at belle.Physical review d,97(1),17. |
| MLA | Hirose, S.,et al."Measurement of the tau lepton polarization and r(d*) in the decay (b)over-bar -> d*tau(-)(nu)over-bar(tau) with one-prong hadronic tau decays at belle".Physical review d 97.1(2018):17. |
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