High Energy Physics Seminar: Rusa Mandal, Institute of Mathematical Sciences (IMSc), Chennai  Add To Calendar

  • Date(s): Friday, 8/26 3:00 PM to Friday, 8/26 4:00 PM
  • Speaker: Rusa Mandal
  • Host: James Unwin
  • Campus Address: 2214 SES (Science and Engineering South)

Title: Signal of right-handed currents in the decay B ->K*ll

Abstract: The decay mode B-> K* ll is one of the most promising modes to probe physics beyond the standard model (SM),  since the angular distribution of the decay products enable measurement of several constraining observables. LHCb has recently measured these observables using fb^{-1} of data as a binned function of q^2, the dilepton invariant mass squared. I will discuss that LHCb data implies a signal for new physics and provides unambiguous evidence for right-handed currents, which are absent in the SM. These conclusions are derived in the maximum q^2 limit and are free from hadronic corrections. Our approach differs from other approaches that probe new physics at low q^2 as it does not require estimates of hadronic parameters but relies instead on heavy quark symmetries that are reliable at the maximum$q^2 kinematic endpoint.

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