$$a_1(1260)$$ a 1 ( 1260 ) -meson longitudinal twist-2 distribution amplitude and the $$D\rightarrow a_1(1260)\ell ^+\nu _\ell $$ D → a 1 ( 1260 ) ℓ + ν ℓ decay processes

$$a_1(1260)$$ a 1 ( 1260 ) -meson longitudinal twist-2 distribution amplitude and the $$D\rightarrow a_1(1260)\ell ^+\nu _\ell $$ D → a 1 ( 1260 ) ℓ + ν ℓ decay processes

Abstract In the paper, we investigate the moments $$\langle \xi _{2;a_1}^{\Vert ;n}\rangle $$ ⟨ ξ 2 ; a 1 ‖ ; n ⟩ of the axial-vector $$a_1(1260)$$ a 1 ( 1260 ) -meson distribution amplitude by using the QCD sum rules approach under the background field theory. By considering the vacuum condensates...

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Bibliographic Details
Main Authors: Dan-Dan Hu, Hai-Bing Fu, Tao Zhong, Zai-Hui Wu, Xing-Gang Wu
Format: Article
Language:English
Published: SpringerOpen 2022-07-01
Series:European Physical Journal C: Particles and Fields
Online Access:https://doi.org/10.1140/epjc/s10052-022-10555-y

Internet

https://doi.org/10.1140/epjc/s10052-022-10555-y

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