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$sigma$ Meson In $J/Psi$ Decays | | Wujun Huo
; Xinmin Zhang
; Tao Huang
; | | Date: |
3 Dec 2001 | | Journal: | Phys.Rev. D65 (2002) 097505 | | Subject: | hep-ph | | Affiliation: | IHEP, CAS, P.R.China | | Abstract: | Recently BES at BEPC found evidence for the existence of the $sigma$ meson in the process of $J/Psi o sigmaomega opipiomega$. In this paper we firstly discuss the relevant coupling $g_{sigmapipi}$ and show that the linear $sigma$ model gives rise to a reasonable description of the $sigma$ decay into $pi$’s, then we calculate the coupling constant $g^{th}_{J/Psisigmaomega}$ by using the perturbative QCD technique and the light-cone wave functions of the $sigma$ and $omega$ mesons. The results show that the theoretical value of $g^{th}_{J/Psisigmaomega}$ is within the range of experimental value $g_{J/Psisigmaomega}$. | | Source: | arXiv, hep-ph/0112025 | | Services: | Forum | Review | PDF | Favorites | |
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