Light-cone distribution amplitudes of light JPC = 2−− tensor mesons in QCD

Autor: T.M. Aliev, S. Bilmis, Kwei-Chou Yang
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Nuclear Physics B, Vol 931, Iss C, Pp 132-145 (2018)
Druh dokumentu: article
ISSN: 0550-3213
1873-1562
DOI: 10.1016/j.nuclphysb.2018.04.008
Popis: We present a study for two-quark light-cone distribution amplitudes for the 13D2 light tensor meson states with quantum number JPC=2−−. Because of the G-parity, the chiral-even two-quark light-cone distribution amplitudes of this tensor meson are antisymmetric under the interchange of momentum fractions of the quark and antiquark in the SU(3) limit, while the chiral-odd ones are symmetric. The asymptotic leading-twist LCDAs with the strange quark mass correction are shown. We estimate the relevant parameters, the decay constants fT and fT⊥, and first Gegenbauer moment a1⊥, by using the QCD sum rule method. These parameters play a central role in the investigation of B meson decaying into the 2−− tensor mesons.
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