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  • Kumar, Girish; Mahajan, Namit (Cornell University Library, 2015-11)
    The semi-leptonic baryonic b→s decay, Λb→Λℓ+ℓ−, has been studied and new angular observables and asymmetries have been proposed which can test the presence of new physics beyond the standard model.
  • Hati, Chandan; Kumar, Girish; Mahajan, Namit (Cornell University Library, 2015-11)
    Recent experimental results from the LHCb, BaBar and Belle collaborations on the semitauonic decays of B meson, \bar{B}\rightarrow D^{(\ast)}\tau \bar{\nu}, showing a significant deviation from the Standard Model (SM), ...
  • Kumar, Girish; Mahajan, Namit (arXiv, Cornell University Library, 2014-12)
    We calculate the zeroes of angular observables P′4 and P′5 of 4 - body angular distribution of B→K∗(→Kπ)l+l− where LHCb, in its analysis of form factor independent angular observables, has found deviations from standard ...
  • Das, Diganta; Kindra, Bharti; Kumar, Girish; Mahajan, Namit (Cornell University Library, 2018-12)
    We study the rare decay B→K∗2(1430)(→Kπ)ℓ+ℓ− in the Standard Model and beyond. Working in the transversity basis, we exploit the relations between the heavy-to-light form factors in the limit of heavy quark (mb→∞) and large ...
  • Kumar, Girish (Cornell University Library, 2016-02)
    Recently several anomalies in flavor physics have been observed and it was noticed that leptoquarks might account for the deviations from the Standard Model. In this work, we examine the effects of new physics originated ...
  • Das, Diganta; Hati, Chandan; Kumar, Girish; Mahajan, Namit (Cornell University Library, 2016-05)
    We present a unified explanation for the B-decay anomalies in RD(∗) and RK together with the anomalous muon magnetic moment, consistent with the constraints from the current measurements of leptonic decay rates and D0−D¯0, ...

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