Journal Article

FZJ-2021-04422

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Chiral dynamics and S-wave contributions in ${\bar{B}}^0/D^0 \rightarrow \pi ^{\pm }\eta \ l^{\mp } \nu $ decays

Shi, Y.-J. (Corresponding author) ; Meißner, U.-G.FZJ*

2021
Springer Heidelberg

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Please use a persistent id in citations: http://hdl.handle.net/2128/29105  doi:10.1140/epjc/s10052-021-09208-3

Abstract: In this work, we analyze the semi-leptonic decays B¯0/D0→(a0(980)±→π±η)l∓ν within light-cone sum rules. The two and three-body light-cone distribution amplitudes (LCDAs) of the B meson and the only available two-body LCDA of the D meson are used. To include the finite-width effect of the a0(980), we use a scalar form factor to describe the final-state interaction between the πη mesons, which was previously calculated within unitarized Chiral Perturbation Theory. The result for the decay branching fraction of the D0 decay is in good agreement with that measured by the BESIII Collaboration, while the branching fraction of the B¯0 decay can be tested in future experiments.

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Contributing Institute(s):

1. Theorie der Starken Wechselwirkung (IAS-4)
2. Theorie der starken Wechselwirkung (IKP-3)

Research Program(s):

1. 5111 - Domain-Specific Simulation & Data Life Cycle Labs (SDLs) and Research Groups (POF4-511) (POF4-511)

Appears in the scientific report 2021

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