Fourth generation effects in rare B-s -> l(+)l(-) and B-s -> l(+)l(-)gamma decays

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Aliev T., Ozpineci A., Savci M.

EUROPEAN PHYSICAL JOURNAL C, vol.27, no.3, pp.405-410, 2003 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 27 Issue: 3
  • Publication Date: 2003
  • Doi Number: 10.1140/epjc/s2002-01110-6
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.405-410
  • Middle East Technical University Affiliated: Yes


The contribution of the fourth generation quarks to the rare B-s --> l(+)l(-) and B-s --> l(+)l(-)gamma decays are studied. Constraints on the extended Cabibbo-Kobayashi-Maskawa matrix elements \VtbV*(ts)\ and \Vt'bV*(t's)\, are obtained from the existing experimental result for the branching ratio of the B --> X(s)gamma decay. The branching ratios of the above-mentioned decays, as well as the photon spectrum in the B-s --> l(+)l(-)gamma decay, are studied. It is found that the results are sensitive to the existence of the fourth generation.