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- Title
Investigation of Bd(s)∗→Dd+(Ds+)τ−v̄τ decays in W′ model and scalar leptoquark model.
- Authors
Mahata, S.; Mandal, M.; Biswas, S.; Biswas, A.; Sahoo, S.
- Abstract
Inspired by recent anomalies associated with the b hadron decays, a theoretical investigation on B d (s) ∗ → D d + (D s +) τ − v ̄ τ decays has been performed in W ′ model and scalar leptoquark model. To implicate these models, new coupling parameters are fixed by χ 2 fitting using recent experimental results from b → c τ v ̄ τ transition as constraints. We have estimated branching fraction, lepton flavor universality (LFU) parameter, forward–backward asymmetry and lepton-spin asymmetry in the standard model (SM) as well as above two new physics (NP) models. Except lepton-spin asymmetry, significant deviations from the SM predictions are observed in W ′ model for both channels. In comparison to other observables, lepton-spin asymmetry shifts slightly from the SM in scalar leptoquark model. Our results may be helpful to the experimental communities to explore these decays and W ′ boson and leptoquark at the colliders.
- Subjects
STANDARD model (Nuclear physics); HADRON decay; BOSONS; PHYSICS; LEPTONS (Nuclear physics)
- Publication
International Journal of Modern Physics A: Particles & Fields; Gravitation; Cosmology; Nuclear Physics, 2023, Vol 38, Issue 22/23, p1
- ISSN
0217-751X
- Publication type
Article
- DOI
10.1142/S0217751X23501130