Anomalies in (semi)-leptonic B decays B&plusmn; &rarr;&tau;&plusmn; &nu;, B&plusmn; &rarr;D &tau;&plusmn; &nu; and B&plusmn; &rarr; D* &tau;&plusmn; &nu;, and possible resolution with sterile neutrino

Gorazd Cvetic; Francis Halzen; C. S. Kim; Sechul Oh

doi:10.1088/1674-1137/41/11/113102

Chinese Physics C> 2017, Vol. 41> Issue(11) : 113102 DOI: 10.1088/1674-1137/41/11/113102

Anomalies in (semi)-leptonic B decays B^± →τ^± ν, B^± →D τ^± ν and B^± → D^* τ^± ν, and possible resolution with sterile neutrino

Gorazd Cvetic ¹ ,
Francis Halzen ^2,, ,
C. S. Kim ^3,, ,
Sechul Oh ^4,,

1.
Wisconsin IceCube Particle Astrophysics Center and Department of Physics, University of Wisconsin, Madison, WI, 53706, USA
2.
Department of Physics and IPAP, Yonsei University, Seoul 120-749, Korea
3.
University College, Yonsei University, Incheon 406-840, Korea

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Abstract：
The universality of the weak interactions can be tested in semileptonic b → c transitions, and in particular in the ratios R (D^*)) Γ(B → D^*) τν)/Γ(B→ D^*) lν) (where l=μ or e). Due to the recent differences between the experimental measurements of these observables by BaBar, Belle and LHCb on the one hand and the Standard Model predicted values on the other hand, we study the predicted ratios R (D^*))=Γ(B → D^*)τ +"missing")/Γ(B → D^*) lν) in scenarios with an additional sterile heavy neutrino of mass~1 GeV. Further, we evaluate the newly defined ratio R(0) Γ(B →τ +"missing")/Γ(B →μν) in such scenarios, in view of the future possibilities of measuring the quantity at Belle-Ⅱ.
- sterile neutrino ,
- lepton universality ,
- semileptonic m B decays

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Gorazd Cvetic, Francis Halzen, C. S. Kim and Sechul Oh. Anomalies in (semi)-leptonic B decays B^± →τ^± ν, B^± →D τ^± ν and B^± → D^* τ^± ν, and possible resolution with sterile neutrino[J]. Chinese Physics C, 2017, 41(11): 113102. doi: 10.1088/1674-1137/41/11/113102

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Received: 2017-07-12

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G.C. acknowledges the support by FONDECYT (Chile) (1130599), The work of C.S.K. was supported in part by the NRF grant funded by the Korean government of the MEST (2016R1D1A1A02936965)

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Anomalies in (semi)-leptonic B decays B^± →τ^± ν, B^± →D τ^± ν and B^± → D^* τ^± ν, and possible resolution with sterile neutrino

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通讯作者: 陈斌, bchen63@163.com

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Anomalies in (semi)-leptonic B decays B^± →τ^± ν, B^± →D τ^± ν and B^± → D^* τ^± ν, and possible resolution with sterile neutrino

Corresponding author: Francis Halzen, gorazd.cvetic@usm.cl

Corresponding author: C. S. Kim, gorazd.cvetic@usm.cl

Corresponding author: Sechul Oh, gorazd.cvetic@usm.cl

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