Bhubanjyoti Bhattacharya

Model-independent determination of the axial mass parameter in quasielastic neutrino-nucleon scattering

Quasielastic neutrino-nucleon scattering is a basic signal process for neutrino oscillation studies. At accelerator energies, the corresponding cross section is subject to significant uncertainty due to the poorly constrained axial-vector form factor of the nucleon. A model-independent description of the axial-vector form factor is presented. Data from the MiniBooNE experiment for quasielastic neutrino scattering on 12 C are analyzed under the assumption of a definite nuclear model. The value of the axial mass parameter, mA = 0.85 +0.22 −0.07 ± 0.09GeV, is found to differ significantly from extractions based on traditional form factor models. Implications for future neutrino scattering and pion electroproduction measurements are discussed.

Simultaneous Explanation of the

A bstractRK and RD*

and

{R}_{D^{\left(*\right)}}

Puzzles: a Model Analysis

are two B-decay measurements that presently exhibit discrepancies with the SM. Recently, using an effective field theory approach, it was demonstrated that a new-physics model can simultaneously explain both the RK and RD*

\to

{R}_{D^{\left(*\right)}}

Flavor symmetry and decays of charmed mesons to pairs of light pseudoscalars

puzzles. There are two UV completions that can give rise to the effective Lagrangian: (i) V B: a vector boson that transforms as an SU(2)L triplet, as in the SM, (ii) U1: an SU(2)L-singlet vector leptoquark. In this paper, we examine these models individually. A key point is that V B contributes to Bs0‐B¯s0