S. Nandi

activity

20042026

∣ V_{c b} ∣

from

B \to D^{(*)} ℓ ν_{ℓ}

and the Standard Model predictions of

R (D^{(*)})

184 citations · 1.5k across the 51 of their papers we have counts for

collaborators

51 papers

hep-ph2026

Polarisation fractions in $B \to V_{1} V_{2}$ : U-Spin constraints and new physics signatures

Debajyoti Choudhury, Suman Kumbhakar, Anirban Kundu +1

We investigate the decays of $B$ mesons, {\em i.e.}, $B_{d}$ , $B_{s}$ , $B^{+}$ , and their antiparticles, to two light vector mesons ( $B \to V_{1} V_{2}$ ). We use the SU(2) U-spin symmetry, wh…

hep-ph2023★ 9 cited

Constraining inverse moment of $B$ -meson distribution amplitude using Lattice QCD data

Rusa Mandal, Soumitra Nandi, Ipsita Ray

We constrain the inverse moment of the $B$ -meson light-cone distribution amplitude (LCDA), $λ_{B}$ in heavy quark effective theory, using form factor estimates from Lattice QCD colla…

hep-ph2023★ 2 cited

Test of new physics effects in $B ˉ \to (D^{(*)}, π) ℓ^{-} ν ˉ_{ℓ}$ decays with heavy and light leptons

Ipsita Ray, Soumitra Nandi

We study the $B ˉ \to D (D^{*}) ℓ^{-} ν ˉ_{ℓ}$ decays based on the up-to-date available inputs from experiments and the lattice. First, we review the standard model (SM) predi…

hep-ph2022★ 13 cited

Extractions of $∣ V_{u b} ∣/∣ V_{c b} ∣$ from a combined study of the exclusive $b \to u (c) ℓ ν_{ℓ}$ decays

Aritra Biswas, Soumitra Nandi, Ipsita Ray

We have extracted the ratio $∣ V_{u b} ∣/∣ V_{c b} ∣$ from a combined study of the available inputs on $B ˉ \to (π, ρ, ω) ℓ^{-} ν ˉ_{ℓ}$ and $\bar{B}(\bar{B}_s)\to (D^{(\ast)}, D_s…

hep-ph2022★ 10 cited

Study of the $b \to d ℓℓ$ transitions in the Standard Model and test of New Physics sensitivities

Aritra Biswas, Soumitra Nandi, Sunando Kumar Patra +1

After incorporating all the available experimental data and the most up-to-date Lattice and light cone sum rule (LCSR) inputs on the form factors, we analyze the exclusive $b\to u\…

hep-ph2021

Constraining New Physics with Possible Dark Matter Signatures from a Global CKM Fit

Aritra Biswas, Lopamudra Mukherjee, Soumitra Nandi +1

We constrain the parameters of a representative new physics model with possible dark matter (DM) signature from a global CKM fit analysis. The model has neutral quark current inter…

Polarisation fractions in B→V1​V2​: U-Spin constraints and new physics signatures

Constraining inverse moment of B-meson distribution amplitude using Lattice QCD data

Test of new physics effects in Bˉ→(D(∗),π)ℓ−νˉℓ​ decays with heavy and light leptons

Extractions of ∣Vub​∣/∣Vcb​∣ from a combined study of the exclusive b→u(c)ℓνℓ​ decays