2023/05/28 by Das, Nilakshi, Adhikary, Amit, Dutta, Rupak
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph)
paper · doi:10.48550/arxiv.2305.17766
Recent experimental measurements on the anomalies observed in B meson decays have pointed towards the possibility of new physics. The LHCb collaboration has reported a significant deviation, exceeding 3.2σ, from the predictions of the standard model. This discrepancy is observed in the combined measurement on the ratio of branching ratio R(D)-R(D^⋆) for the decays corresponding to B→ Dℓν and B→ D^⋆ℓν processes. Furthermore, the other observables, such as RJ/ψ, PτD^⋆, FLD^⋆, and RΛc in the b→ cℓν transition, have also exhibited noticeable deviations from the standard model predictions. Motivated by these anomalies in the b→ cτν transitions, we perform a log-likelihood fit incorporating new physics scalar couplings and explored the implications of a charged Higgs boson within a generic two Higgs doublet model. Our comprehensive analysis, focused on the τν and bτν final states, was performed using the High Luminosity run of the Large Hadron Collider (HL-LHC). We demonstrate the sensitivity of the collider search for a low-mass charged Higgs boson while considering the current experimental constraints on various b→ cτν flavor observables.