Footprints of new physics in transitions

ZR Huang, Y Li, CD Lu, MA Paracha, C Wang - Physical Review D, 2018 - APS
In this work, we perform a combined analysis of the R (D), R (D*), and R (J/ψ) anomalies in a
model-independent manner based on the general framework of the four-fermion effective …

The phenomenology of electric dipole moments in models of scalar leptoquarks

W Dekens, J De Vries, M Jung, KK Vos - Journal of High Energy Physics, 2019 - Springer
A bstract We study the phenomenology of electric dipole moments (EDMs) induced in
various scalar leptoquark models. We consider generic leptoquark couplings to quarks and …

Right-handed neutrinos and R (D (∗))

D Robinson, B Shakya, J Zupan - Journal of High Energy Physics, 2019 - Springer
A bstract We explore scenarios where the R (D (∗)) anomalies arise from semitauonic
decays to a right-handed sterile neutrino. We perform an EFT study of all five simplified …

[HTML][HTML] Revisit to the b→ cτν transition: in and beyond the SM

K Cheung, ZR Huang, HD Li, CD Lü, Y Mao, RY Tang - Nuclear Physics B, 2021 - Elsevier
We perform an analysis of the b→ c τ ν data, including R (D (⁎)), R (J/ψ), P τ (D⁎) and
FLD⁎, within and beyond the Standard Model (SM). We fit the B→ D (⁎) hadronic form …

Quark flavor physics and lattice QCD

M Wingate - The European Physical Journal A, 2021 - Springer
For a long time, investigation into the weak interactions of quarks has guided us toward
understanding the Standard Model we know today. Now in the era of high precision, these …

New physics and the tau polarization vector in b → decays

N Penalva, E Hernandez, J Nieves - Journal of High Energy Physics, 2021 - Springer
A bstract For a general H b→\({H} _c\tau {\overline {\nu}} _ {\tau}\) decay we analyze the role
of the τ polarization vector\({\mathcal {P}}^{\mu}\) in the context of lepton flavor universality …

Constraining new physics with possible dark matter signatures from a global CKM fit

A Biswas, L Mukherjee, S Nandi, SK Patra - Physical Review D, 2023 - APS
We constrain the parameters of a representative new physics model with a possible dark
matter (DM) signature from a global Cabibbo-Kobayashi-Maskawa (CKM) fit analysis. The …

A closer look at observables from exclusive semileptonic B→(π, ρ) ℓνℓ decays

A Biswas, S Nandi - Journal of High Energy Physics, 2021 - Springer
A bstract This article analyses the available inputs in B→ πℓν ℓ and B→ ρℓν ℓ decays which
include the measured values of differential rate in different q 2-bins (lepton invariant mass …

Introduction to flavour physics

J Zupan - arxiv preprint arxiv:1903.05062, 2019 - arxiv.org
We give a brief introduction to flavour physics. The first part covers the flavour structure of the
Standard Model, how the Kobayashi-Maskawa mechanism is tested and provides examples …

Measuring violation in using excited charm mesons

D Aloni, Y Grossman, A Soffer - Physical Review D, 2018 - APS
There is growing evidence for deviation from the standard model predictions in the ratios
between semitauonic and semileptonic B decays, known as the R (D (*)) puzzle. If the …