Mixing angle between P1 3 and P1 1 states in heavy axial vector mesons within the QCD sum rules framework

Date

2025-01-01

Author

Alıyev, Tahmasıb
Bilmiş, Selçuk
Savcı, Mustafa

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In this study, we calculate the mixing angles between the axial-vector mesons D1(s1)-D1(s1)′ and B1(s1)-B1(s1)′ using the QCD sum rules approach. Our results are θ1=28.2±0.6°, θ2=26.6±0.6°, θ3=38.6±0.1°, and θ4=38.5±0.1°. These values are in good agreement with the predictions of heavy quark effective theory, particularly for the mixing angle θ=35.3°, and are compatible with several existing results in the literature. The predicted mixing angles can be tested through the analysis of semileptonic decays such as Bc→B1ℓν, Bc→Bs10ℓν, Bs→Ds1ℓν, and Bs→Ds1′ℓν, which can be investigated at experimental facilities such as LHCb and Belle II.

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https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85214709773&origin=inward
https://hdl.handle.net/11511/113265

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Department of Physics, Article