Ria Sain

activity

20172026

most citedLepton mass effects and angular observables in

Λ_{b} \to Λ (\to p π) ℓ^{+} ℓ^{-}

21 citations · 60 across the 11 of their papers we have counts for

collaborators

12 papers

hep-ph2026

$Λ_{b} \to Λ ℓ^{+} ℓ^{-}$ and $Λ_{b} \to Λ^{*} ℓ^{+} ℓ^{-}$ decays with polarized leptons

Diganta Das, Vedant Parekh, Ria Sain +1

We present an analysis of lepton polarization observables in the rare flavor-changing neutral current decays $Λ_{b} \to Λ ℓ^{+} ℓ^{-}$ and $Λ_{b} \to Λ^{*} ℓ^{+} ℓ^{-}$ . These decays are…

hep-ph2026

Probing Light Dark Fermions in $B \to D^{(*)} ℓ X_{inv}$ via Rate Distributions

Lipika Kolay, Soumitra Nandi, Shantanu Sahoo +1

Experimental analyses of the semileptonic decays $B \to D^{(*)} ℓ ν ˉ$ typically rely on the assumption that the missing energy originates from a massless neutrino, as predic…

hep-ph2026

$∣ V_{c b} ∣$ determinations from $B ˉ \to D^{(*)} ℓ ν ˉ$ decays within the SM and beyond

Wen-Sheng Fang, Syuhei Iguro, Xin-Qiang Li +3

We investigate the $∣ V_{c b} ∣$ determinations from exclusive semi-leptonic $B ˉ \to D^{(*)} ℓ ν ˉ$ decays, together with comprehensive Bayesian fit analyses of the $\bar{B} \…

hep-ph2025

$Λ_{b} \to Λ^{(*)} ν ν ˉ$ decays and the recent Belle-II $B^{+} \to K^{+} ν ν ˉ$ data

Diganta Das, Dargi Shameer, Ria Sain

The Belle-II experiment has recently reported the first measurement of $B^{+} \to K^{+} ν ν ˉ$ decay which exceeds the Standard Model prediction by approximately 2.7 $σ$ . The deviation…

hep-ph2024

Model-independent analysis of new physics effects in $B \to K_{2}^{*} (1430) μ^{+} μ^{-}$ decay

Juhi Vardani, Ria Sain

Recently, the LHCb Collaboration provided updated measurements for the lepton flavour ratios $R_{K}$ and $R_{K^{*}}$ . The currently observed values align with the predictions of the st…

hep-ph2024★ 4 cited

An Imperative study of the angular observables in $Λ_{b} \to Λ_{c}^{+} (\to Λ π^{+}) ℓ^{-} ν ˉ_{ℓ}$ decay and probing the footprint of new physics

Soumitra Nandi, Shantanu Sahoo, Ria Sain

We study the four-fold angular distribution of the semileptonic $Λ_{b} \to Λ_{c}^{+} (\to Λ π^{+}) ℓ^{-} ν ˉ_{ℓ}$ decay and find out analytical expressions for various asymmetric an…

hep-ph2022★ 3 cited

Lepton Flavor Violating $B \to K_{2}^{*} (1430) μ^{\pm} τ^{\mp}$ Decays

Suman Kumbhakar, Ria Sain, Juhi Vardani

A number of measurements in decays induced by the semileptonic $b \to s$ and $b \to c$ transitions hint towards a possible role of new physics in both sectors. Motivated by these ano…

hep-ph2022★ 13 cited

Flavour bounds on the flavon of a minimal and a non-minimal $Z_{2} \times Z_{N}$ symmetry

Gauhar Abbas, Vartika Singh, Neelam Singh +1

We investigate flavour bounds on the $Z_{2} \times Z_{5}$ and $Z_{2} \times Z_{9}$ flavour symmetries. These flavour symmetries are a minimal and a…

hep-ph2020★ 3 cited

Polarized $Λ_{b}$ baryon decay to $p π$ and a dilepton pair

Diganta Das, Ria Sain

The recent anomalies in $b \to s ℓ^{+} ℓ^{-}$ transitions could originate from some New Physics beyond the Standard Model. Either to confirm or to rule out this assumption, more tes…

hep-ph2019★ 6 cited

A detailed study of the $Λ_{b} \to Λ ℓ^{+} ℓ^{-}$ decays in the Standard Model

Srimoy Bhattacharya, Soumitra Nandi, Sunando Kumar Patra +1

Based on the standard model (SM) of particle physics, we study the decays $Λ_{b} \to Λ ℓ^{+} ℓ^{-}$ in light of the available inputs from lattice and the data from LHCb. We fit the…

hep-ph2019★ 10 cited

Radiative $b$ -baryon decays to measure the photon and $b$ -baryon polarization

Luis Miguel García Martín, Brij Jashal, Fernando Martínez Vidal +4

The radiative decays of $b$ -baryons facilitate the direct measurement of photon helicity in $b \to s γ$ transitions thus serving as an important test of physics beyond the Standard M…

hep-ph2017★ 21 cited

Lepton mass effects and angular observables in $Λ_{b} \to Λ (\to p π) ℓ^{+} ℓ^{-}$

Shibasis Roy, Ria Sain, Rahul Sinha

The flavor changing rare decay $B \to K^{*} (\to K π) ℓ^{+} ℓ^{-}$ is one of the most studied modes due to its sensitivity to physics beyond the standard model and several discrepanci…

Λb​→Λℓ+ℓ− and Λb​→Λ∗ℓ+ℓ− decays with polarized leptons

Probing Light Dark Fermions in B→D(∗)ℓXinv​ via Rate Distributions

∣Vcb​∣ determinations from Bˉ→D(∗)ℓνˉ decays within the SM and beyond

Λb​→Λ(∗)ννˉ decays and the recent Belle-II B+→K+ννˉ data

Model-independent analysis of new physics effects in B→K2∗​(1430)μ+μ− decay

An Imperative study of the angular observables in Λb​→Λc+​(→Λπ+)ℓ−νˉℓ​ decay and probing the footprint of new physics

Lepton Flavor Violating B→K2∗​(1430)μ±τ∓ Decays

Flavour bounds on the flavon of a minimal and a non-minimal Z2​×ZN​ symmetry

Polarized Λb​ baryon decay to pπ and a dilepton pair

A detailed study of the Λb​→Λℓ+ℓ− decays in the Standard Model

Radiative b-baryon decays to measure the photon and b-baryon polarization

Lepton mass effects and angular observables in Λb​→Λ(→pπ)ℓ+ℓ−

$Λ_{b} \to Λ ℓ^{+} ℓ^{-}$ and $Λ_{b} \to Λ^{*} ℓ^{+} ℓ^{-}$ decays with polarized leptons

Probing Light Dark Fermions in $B \to D^{(*)} ℓ X_{inv}$ via Rate Distributions

$∣ V_{c b} ∣$ determinations from $B ˉ \to D^{(*)} ℓ ν ˉ$ decays within the SM and beyond

$Λ_{b} \to Λ^{(*)} ν ν ˉ$ decays and the recent Belle-II $B^{+} \to K^{+} ν ν ˉ$ data

Model-independent analysis of new physics effects in $B \to K_{2}^{*} (1430) μ^{+} μ^{-}$ decay

An Imperative study of the angular observables in $Λ_{b} \to Λ_{c}^{+} (\to Λ π^{+}) ℓ^{-} ν ˉ_{ℓ}$ decay and probing the footprint of new physics

Lepton Flavor Violating $B \to K_{2}^{*} (1430) μ^{\pm} τ^{\mp}$ Decays

Flavour bounds on the flavon of a minimal and a non-minimal $Z_{2} \times Z_{N}$ symmetry

Polarized $Λ_{b}$ baryon decay to $p π$ and a dilepton pair

A detailed study of the $Λ_{b} \to Λ ℓ^{+} ℓ^{-}$ decays in the Standard Model

Radiative $b$ -baryon decays to measure the photon and $b$ -baryon polarization

Lepton mass effects and angular observables in $Λ_{b} \to Λ (\to p π) ℓ^{+} ℓ^{-}$