Weak ΞQQ→ΣQℓ+ℓ- decays induced by FCNC in QCD

With the discovery of the doubly heavy Ξ cc baryon, comprehensive studies of the properties of the doubly heavy baryons are started. In the present work, we examine the Ξ bb → Σ b ℓ + ℓ - and Ξ cc → Σ c ℓ + ℓ - decays induced by flavor-changing neutral currents (FCNC) in the framework of the light-c...

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Bibliographic Details
Published in:The European physical journal. C, Particles and fields Particles and fields, 2022-10, Vol.82 (10)
Main Authors: Aliev, T. M., Savci, M., Bilmis, S.
Format: Article
Language:English
Subjects:
Astronomy
Astrophysics and Cosmology
Baryons
Elementary Particles
Form factors
Hadrons
Heavy Ions
Light
Measurement Science and Instrumentation
Neutral currents
Nuclear Energy
Nuclear Physics
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quarks
Regular Article - Theoretical Physics
String Theory
Sum rules
Tensors
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Summary:With the discovery of the doubly heavy Ξ cc baryon, comprehensive studies of the properties of the doubly heavy baryons are started. In the present work, we examine the Ξ bb → Σ b ℓ + ℓ - and 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 → u transition is around five orders smaller than the b → d transition. Our findings are also compared with other approaches.
ISSN:1434-6044
1434-6052
DOI:10.1140/epjc/s10052-022-10845-5