Timelike-helicity y B → ππ form factor from light-cone sum rules with dipion distribution amplitudes
We complete the set of QCD light-cone sum rules for B→ππ transition form factors, deriving a new sum rule for the timelike-helicity form factor F[subscript t] in terms of dipion distribution amplitudes. This sum rule, in the leading twist-two approximation, is directly related to the pion vector for...
Main Authors: | Cheng, Shan, Khodjamirian, Alexander, Virto, Javier |
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Other Authors: | Massachusetts Institute of Technology. Center for Theoretical Physics |
Format: | Article |
Language: | English |
Published: |
American Physical Society
2018
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Online Access: | http://hdl.handle.net/1721.1/113609 |
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