A. Datta

activity

19932026

most citedSimultaneous Explanation of the

R_{K}

and

R (D^{(*)})

Puzzles

287 citations · 3.8k across the 126 of their papers we have counts for

collaborators

Showing 2012 · hep-phShow all

7 papers · 2 filters

hep-ph2012

$B \to V V$ Decays - Polarization and Triple Products

Alakabha Datta

We discuss how triple product asymmetries can be used to discover and constrain new physics in $B \to V V$ decays.

hep-ph2012

Predictions for $B \to τ μ ˉ + μ τ ˉ$

Dris Boubaa, Alakabha Datta, Murugeswaran Duraisamy +1

The observation of $B \to τ μ ˉ + μ τ ˉ$ at present experiments would be a clear sign of new physics. In this paper we calculate this process in a 2HDM framework where the decay…

hep-ph2012★ 11 cited

Reducing Penguin Pollution

Bhubanjyoti Bhattacharya, Alakabha Datta, David London

The most common decay used for measuring 2beta_s, the phase of Bs-Bsbar mixing, is Bs -> J/psi phi. This decay is dominated by the colour-suppressed tree diagram, but there are oth…

hep-ph2012★ 18 cited

New Physics in b -> s Transitions and the B_{d,s}^0 -> V_1 V_2 Angular Analysis

Alakabha Datta, Murugeswaran Duraisamy, David London

We suppose that there is new physics (NP) in b -> s transitions, and examine its effect on the angular distribution of B_q^0 -> V_1 V_2 (q=d,s), where V_{1,2} are vector mesons. We…

hep-ph2012★ 145 cited

Diagnosing New Physics in $b \to c τ ν_{τ}$ decays in the light of the recent BaBar result

Alakabha Datta, Murugeswaran Duraisamy, Diptimoy Ghosh

The BaBar Collaboration has recently reported the measurement of the ratio of the branching fractions of $B ˉ \to D (D^{*}) τ^{-} ν_{τ} ˉ$ to $\bar{B} \to D(D^{*}) \ell^{-} \b…

hep-ph2012★ 13 cited

Nonstandard interactions of tau neutrino via charged Higgs and $W^{'}$ contribution

Ahmed Rashed, Murugeswaran Duraisamy, Alakabha Datta

We consider charged Higgs and $W^{'}$ gauge boson contributions to the quasielastic scattering $ν_{τ} + n \to τ^{-} + p$ and $ν ˉ_{τ} + p \to τ^{+} + n$ . These effects modify…

hep-ph2012★ 15 cited

Measuring beta_s with Bs -> K0() K0bar() -- a Reappraisal

Bhubanjyoti Bhattacharya, Alakabha Datta, Maxime Imbeault +1

The Bs-Bsbar mixing phase, beta_s, can be extracted from Bs -> K0(*) K0bar(*), but there is a theoretical error if the second amplitude, Vub* Vus P'uc, is non-negligible. Ciuchini,…

B→VV Decays - Polarization and Triple Products

Predictions for B→τμˉ​+μτˉ