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7 papers · 2 filters
B -> phi K*, B -> phi Ks and New Physics
Alakabha Datta, Maxime Imbeault, David London
We consider the new-physics (NP) solution to the polarization puzzle in B -> phi K* decays. We note that any such solution must reproduce the data in B -> phi Ks, where there are d…
Electroweak precision constraints on the Lee-Wick Standard Model
Ezequiel Alvarez, Leandro Da Rold, Carlos Schat +1
We present the constraints on the parameter space of the Lee-Wick Standard Model coming from electroweak precision observables. The model predicts a large positive S and a negative…
CP violation in tau -> K pi pi nu_tau
Ken Kiers, Kevin Little, Alakabha Datta +3
We consider CP-violating effects in tau->K pi pi nu_tau, assuming that a charged Higgs boson provides a new amplitude that can interfere with the usual Standard Model amplitude. We…
The B-->pi K Puzzle and Supersymmetry
Maxime Imbeault, Seungwon Baek, David London
At present, there are discrepancies between the measurements of several observables in B-->pi K decays and the predictions of the standard model (the ``B-->pi K puzzle''). Although…
Electroweak precision constraints on the Lee-Wick Standard Model
Ezequiel Alvarez, Leandro Da Rold, Carlos Schat +1
We perform an analysis of the electroweak precision observables in the Lee-Wick Standard Model. The most stringent restrictions come from the S and T parameters that receive import…
Final-state Polarization in Bs Decays
Alakabha Datta, David London, Joaquim Matias +2
Certain Bs --> V_1V_2 decays (V_i is a vector meson) can be related by flavor SU(3) symmetry to corresponding Bd --> V_3V_4 decays. In this paper, we show that the final-state pola…