2017/03/31 by Lobsang Dhargyal, Dhargyal, Lobsang
Physics and Astronomy · Computer Science · #Particle physics theoretical and experimental studies #Computational Physics and Python Applications #Dark Matter and Cosmic Phenomena
paper · pdf · doi:10.48550/arxiv.1703.10735
It has been known that B → D(*) τντ are good observables in the search for the charged Higgs. The recent obervation of deviation from standard-model by almost 4σ by Babar, Belle and LHCb in R(D(*)) revived the interest in possible signal of presence of charged Higgs in these modes. But such a large deviation in the rates, where standard-model has tree level contribution, coming from a charged Higgs alone is highly unlikely. However these decay modes are good probes to search for small charged Higgs signal if we can construct sensitive observables in these modes. In this work we would like to propose four new observables which shows much more sensitivity to the presence of charged Higgs than the usual observables such as Aλ^D(*) and Aθ^D(*). These four observable are (1) \frac1AλD, (2) Y1(q2) = \fracADθADλ, (3) Y2(q2) = \fracdΓ(B → D*τντ)dΓD(λτ=+1/2) - dΓD(λτ=-1/2) and (4) Y3(q2) = (\fracq2m2τ)(ADλ + 1)\frac1ADλ.