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B $\rightarrow f_2(1270)$ form factors with light-cone sum rules

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arxiv 1804.02953 v1 pith:4HHTVIJJ submitted 2018-04-09 hep-ph nucl-th

Maximilian Emmerich , Matthias Strohmaier , Andreas Schäfer This is my paper · ORCID
classification hep-phnucl-th
keywords amplitudesdistributionfactorsformrulesgiveincludingrightarrow
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We construct the quark-antiquark chiral odd distribution amplitudes including twist-four mass contributions for tensor mesons. We also give quark-antiquark-gluon distribution amplitudes, where we calculate the input parameters with QCD sum rules. With the help of equations of motion we determine the twist-three and twist-four distribution amplitudes including SU(3) breaking terms. We use QCD light-come sum rules to derive the form factors for the decay B $\rightarrow f_2(1270)$ with vector, axial-vector and tensor currents. We also give the $q^2$ dependence of the form factors.

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  1. Hadronic photon correction to $\gamma^{\ast} \gamma \to f_{2}(1270)$ at next-to-leading order

    hep-ph 2026-08 conditional novelty 6.0 of 10

    Hadronic photon corrections to gamma* gamma -> f2(1270) are computed at NLO with NLL resummation, giving updated form factors that raise T0 toward Belle data.

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