$B_s^0 - \bar B_s^0$ mixing and $b \to s $ transitions in isosinglet down quark model

  title={\$B\_s^0 - \bar B\_s^0\$ mixing and \$b \to s \$ transitions in isosinglet down quark model},
  author={Rukmani Mohanta and Anjan Kumar Giri},
  journal={Physical Review D},
The recent observation of the mass difference in $B_s$ system seems to be not in complete agreement with the corresponding standard model value. We consider the model with an extra vector like down quark to explain this discrepancy and obtain the constraints on the new physics parameters. Thereafter, we show that with these new constraints this model can successfully explain other observed deviations associated with $b \to s$ transitions, namely, $B_s \to \psi \phi$, $B\to K \pi$ and $B\to \phi… 
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JHEP 0706

  • 072
  • 2007

Heavy Flavours II


  • Theor. Phys. 101, 1313 (1999); M. Bando, T. Kugo and K. Yoshioka, Prog. Theor. Phys. 104, 211
  • 2000


  • Rev. D 55, 2845 (1997); A. K. Giri and R. Mohanta, Phys. Rev. D 68, 014020 (2003); ibid 69, 014008 (2004); Mod. Phys. Lett. A 19, 1903 (2004); JHEP 11, 084 (2004); Euro. Phys. J. C 45, 151 (2006); R. Mohanta, Phys. Rev. D 71, 114013
  • 2005


  • Rev. D 69, 115011 (2004); S. Khalil, Phys. Rev. D 74, 035005 (2006); B. Dutta and Y. Nimura, Phys. Rev. Lett. 97, 241802 (2006); R. Arnowitt, B. Dutta, B. Hu and S. Oh, Phys. Lett. B 641, 305 (2006); X. G. He and G. Valencia, Phys. Rev. D 74, 013011 (2006); S. Chang, C. S. Kim and J. Song, J. High E
  • 2007

Errutum ibid

  • 2001


  • Rev. D 64, 015007 (2001); G. Barenboim and F. J. Botella, Phys. Lett. B 433, 385
  • 1998

hep-ph/0307251; N

  • G. Deshpande and D. K. Ghosh, Phys. Lett. B 593, 135
  • 2004

) ; B . Dutta and Y . Nimura

  • Phys . Rev . Lett .
  • 2006