Weak $$\Xi _{QQ} \rightarrow \Sigma _Q \ell ^+ \ell ^-$$ decays induced by FCNC in QCD-Reference-Cited by-同舟云学术

Weak $$\Xi _{QQ} \rightarrow \Sigma _Q \ell ^+ \ell ^-$$ decays induced by FCNC in QCD

Published:2022-10-02 Issue:10 Volume:82 Page:
ISSN:1434-6052
Container-title:The European Physical Journal C
language:en
Short-container-title:Eur. Phys. J. C

Author:

Aliev T. M.^ORCID,Savci M.^ORCID,Bilmis S.^ORCID

Abstract

AbstractWith the discovery of the doubly heavy

$$\Xi _{cc}$$

Ξ cc baryon, comprehensive studies of the properties of the doubly heavy baryons are started. In the present work, we examine the

$$\Xi _{bb} \rightarrow \Sigma _b \ell ^+ \ell ^-$$

Ξ bb → Σ b ℓ + ℓ - and

$$\Xi _{cc} \rightarrow \Sigma _c \ell ^+ \ell ^-$$

Ξ cc → Σ c ℓ + ℓ - decays induced by flavor-changing neutral currents (FCNC) in the framework of the light-cone sum rules. After obtaining the sum rules for the form factors induced by the tensor current, the branching ratios of the relevant transitions are estimated. We found that the branching ratio for the

$$c \rightarrow u$$

c → u transition is around five orders smaller than the

$$b \rightarrow d$$

b → d transition. Our findings are also compared with other approaches.

Publisher

Springer Science and Business Media LLC

Subject

Physics and Astronomy (miscellaneous),Engineering (miscellaneous)

Link

https://link.springer.com/content/pdf/10.1140/epjc/s10052-022-10845-5.pdf

Reference36 articles.

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3. LHCb Collaboration, R. Aaij et al., Measurement of the lifetime of the doubly charmed baryon $$\Xi _{cc}^{++}$$. Phys. Rev. Lett. 121(5), 052002 (2018). arXiv:1806.02744

4. T. Aliev, S. Bilmis, Properties of doubly heavy baryons in QCD. Turk. J. Phys. 46(1), 1–26 (2022). arXiv:2203.02965

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