Footprints of new physics in b c Ӡ͠transitions
文献类型：期刊论文
| 作者 | Lu, CD; Wang, C; Huang, Zhuo-Ran, Li, Ying, Lu, Cai-Dian, Paracha, M. Ali; Wang, Chao; Paracha, MA; M.Ali Paracha; Lv CD(吕才典) ; Huang ZR(黄卓然); Wang C(王超); Huang, Zhuo-Ran, Li, Ying, Lu, Cai-Dian, Paracha, M. Ali
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| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2018 |
| 卷号 | 98期号:9页码:95018 |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/PhysRevD.98.095018 |
| 文献子类 | Article |
| 英文摘要 | In this work, we perform a combined analysis of the R(D), R(D*), and R(J/psi) anomalies in a model-independent manner based on the general framework of the four-fermion effective field theory, paying special attention to the use of the hadronic form factors. For the B -> D(D*) transition form factors, we use the heavy quark field theory parametrization which includes the higher-order corrections of O(alpha(s,) Lambda(QCD/mb,c)) and was determined recently from a fit to lattice QCD and light-cone sum rule results in complementary kinematical regions of the momentum transfer. For the B-c -> J/psi(eta(c)) transitions, we use the form factors calculated in the covariant light-front quark model, which are found to be well consistent with the preliminary lattice results. With this particular treatment of hadronic matrix elements, in our analysis the two classes of vector operators are shown to be the most favored single new physics (NP) operators by the current experimental constraints within 2 sigma and the LEP1 data on Br(B-c -> tau nu) as well as the minimum chi(2) fit, while the tensor operator is also allowed but severely constrained, and the scalar ones are excluded. Using the favored ranges and fitted values of the Wilson coefficients of the single NP operators, we also give a prognosis for the physical observables, such as the ratios of decay rates (R(D(D*)), R(J/psi(eta(c)))) and other polarized observables as well as the q(2) distributions. |
| 电子版国际标准刊号 | 2470-0029 |
| WOS关键词 | ANOMALIES |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000451336400007 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/286922]  |
| 专题 | 高能物理研究所_理论物理室 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Lu, CD,Wang, C,Huang, Zhuo-Ran, Li, Ying, Lu, Cai-Dian, Paracha, M. Ali,et al. Footprints of new physics in b c Ӡ͠transitions[J]. PHYSICAL REVIEW D,2018,98(9):95018. |
| APA | Lu, CD.,Wang, C.,Huang, Zhuo-Ran, Li, Ying, Lu, Cai-Dian, Paracha, M. Ali.,Wang, Chao.,Paracha, MA.,...&Li, Y.(2018).Footprints of new physics in b c Ӡ͠transitions.PHYSICAL REVIEW D,98(9),95018. |
| MLA | Lu, CD,et al."Footprints of new physics in b c Ӡ͠transitions".PHYSICAL REVIEW D 98.9(2018):95018. |
入库方式： OAI收割
来源：高能物理研究所
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