%0 Generic %1 huang2016revisiting %A Huang, Zhuo-Ran %A Jin, Hong Ying %A Steele, T. G. %A Zhang, Zhu Feng %D 2016 %K +light_hybrid_decays %R 10.1103/PhysRevD.94.054037 %T Revisiting the b1 pi and rho pi decay modes of the 1-+ light hybrid state with light-cone QCD sum rules %U http://arxiv.org/abs/1608.03028 %X We study the $\rho\pi$ and $b_1\pi$ decay modes of the $1^-+$ light hybrid state within the framework of light-cone QCD sum rules. We use both the tensor current $\bar\psi\sigma_\mu\nu\psi$ and the derivative current $\psiD_\mu\gamma_5\psi$ as interpolating currents to calculate the partial decay width of the $b_1\pi$ decay mode. Comparing the sum rules obtained by using different currents, we obtain $\Gamma(\pi_1b_1\pi)$ = 8--23, 32--86 and 52--151\,MeV for $m_1^-+$ = 1.6, 1.8 and 2.0\,GeV respectively, which favour the results from the flux tube models and lattice simulations. We also use the tensor current to study the $\rho\pi$ decay mode, and although an extended stability criterion is needed, our results suggest a small partial decay width.

@misc{huang2016revisiting, abstract = {We study the $\rho\pi$ and $b_1\pi$ decay modes of the $1^{-+}$ light hybrid state within the framework of light-cone QCD sum rules. We use both the tensor current $\bar\psi\sigma_{\mu\nu}\psi$ and the derivative current $\bar{\psi}\overleftrightarrow{D}_\mu\gamma_5\psi$ as interpolating currents to calculate the partial decay width of the $b_1\pi$ decay mode. Comparing the sum rules obtained by using different currents, we obtain $\Gamma(\pi_1\to b_1\pi)$ = 8--23, 32--86 and 52--151\,MeV for $m_{1^{-+}}$ = 1.6, 1.8 and 2.0\,GeV respectively, which favour the results from the flux tube models and lattice simulations. We also use the tensor current to study the $\rho\pi$ decay mode, and although an extended stability criterion is needed, our results suggest a small partial decay width.}, added-at = {2020-05-14T20:41:59.000+0200}, author = {Huang, Zhuo-Ran and Jin, Hong Ying and Steele, T. G. and Zhang, Zhu Feng}, biburl = {https://www.bibsonomy.org/bibtex/2b55161ccfa822977e425beab617ad9ca/dharnett}, description = {1608.03028.pdf}, doi = {10.1103/PhysRevD.94.054037}, interhash = {0996423aadb55da447c530b8c15488b2}, intrahash = {b55161ccfa822977e425beab617ad9ca}, keywords = {+light_hybrid_decays}, note = {cite arxiv:1608.03028Comment: 12 pages, 7 figures, minor texts have been corrected}, timestamp = {2020-05-14T20:41:59.000+0200}, title = {Revisiting the b1 pi and rho pi decay modes of the 1-+ light hybrid state with light-cone QCD sum rules}, url = {http://arxiv.org/abs/1608.03028}, year = 2016 }