B → T transition form factors in light-cone sum rules
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Type :
Article
Publication Status :
Published
Access :
openAccess
Abstract
We present a new calculation of the semileptonic tree-level and flavor-changing neutral current form
factors describing B-meson transitions to tensor mesons T ¼ D2, K2, a2, f2 (JP ¼ 2þ). We employ the QCD light-cone sum rules approach with B-meson distribution amplitudes. We go beyond the leading-twist accuracy and provide analytically, for the first time, higher-twist corrections for the two-particle contributions up to twist-four terms. We observe that the impact of higher-twist terms to the sum rules is noticeable. We study the phenomenological implications of our results on the radiative B → K 2γ and semileptonic B → D 2lν¯l, B → K 2lþl− decays.
Source :
Physical Review D
Date :
2019-11-11
Volume :
100
Issue :
9
Publisher :
American Physical Society
URI
http://hdl.handle.net/10679/6632https://journals.aps.org/prd/abstract/10.1103/PhysRevD.100.094005
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