中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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
刊名PHYSICAL REVIEW D
出版日期2018
卷号98期号:9页码:95018
ISSN号2470-0010
DOI10.1103/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
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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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