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Exclusive semileptonic rare decays \(B \to K^{(*)} l^ + l^-\) in a SUSY SO(10) GUT

  • Wen-Jun LiEmail author
  • Yuan-Ben Dai
  • Chao-Shang Huang
theoretical physics

Abstract.

In the SUSY SO(10) GUT context, we study the exclusive processes \(B \to K^{(*)} l^ + l^-(l = \mu,\tau)\). Using the Wilson coefficients of the relevant operators including the new operators \(\smash{Q_{1,2}^{(\prime)}}\) which are induced by neutral Higgs boson (NHB) penguins, we evaluate some possible observables associated with these processes like the invariant mass spectrum (IMS), lepton pair forward-backward asymmetry (FBA), lepton polarization asymmetries etc. In this model the contributions from Wilson coefficients \(C_{Q_{1,2}}^\prime\), among new contributions, are dominant. Our results show that the NHB effects are sensitive to the FBA, \(\mathrm {d}L/\mathrm {d}\hat{s}\), and \(\mathrm {d}T/\mathrm {d}\hat{s}\) of \(B \to K^{(*)} \tau^ + \tau^-\) decay, which are expected to be measured in B factories, the deviation of \(\mathrm {d}T/\mathrm {d}\hat{s}\) in \(B \to K \mu^ + \mu^-\) can reach 0.1 from SM, which could be seen in B factories, and the average of the normal polarization \(\mathrm {d}N/\mathrm {d}\hat{s}\) can reach several percent for \(B \to K \mu^ + \mu^-\) and it is 0.05 or so for \(B\to K \tau^ + \tau^-\), which could be measured in the future super B factories and provide useful information to probe new physics and discriminate different models.

Keywords

Mass Spectrum Field Theory Elementary Particle Quantum Field Theory Higgs Boson 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin/Heidelberg 2005

Authors and Affiliations

  1. 1.Institute of Theoretical PhysicsAcademia SinicaBeijingChina
  2. 2.Graduate School of the Chinese Academy of ScienceBeijingChina

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