Analysis of FCNC ΞqQ → Λql+l- decay in light-cone sum rules


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ALIYEV T., SAVCI M., BİLMİŞ S.

Physical Review D, vol.106, no.3, 2022 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 106 Issue: 3
  • Publication Date: 2022
  • Doi Number: 10.1103/physrevd.106.034017
  • Journal Name: Physical Review D
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, INSPEC, zbMATH
  • Middle East Technical University Affiliated: Yes

Abstract

© 2022 authors. Published by the American Physical Society.The weak decays of doubly heavy ΞQQ baryon induced by flavor changing b→d and c→u flavor changing neutral current within the light-cone sum rules are studied. The sum rules are constructed and analyzed for the corresponding transition form factors using the parallel components of the light-cone distribution amplitudes for ΛQ baryon. Having the results for the form factors, the corresponding branching ratios for ΞQQ→ΛQl+l- decays are estimated. While the branching ratio due to b→d transition is around 10-9, in c→u transition case, it is found as around 10-13. Hence, Ξbb→Λbl+l- decay has the potential of being discovered at LHCb. However, Ξbb→Λbl+l- is difficult to be measured due to the extremely small values of obtained branching ratio. Our results on the branching ratio are also compared with the results of the light-front approach.