TY  - JOUR
AU  - Chen, Y. H.
AU  - Yao, D. L.
AU  - Zheng, H. Q.
PY  - 2018
DA  - 2018//
TI  - A Study of rho-omega Mixing in Resonance Chiral Theory
T2  - Commun. Theor. Phys.
JO  - Communications in Theoretical Physics
SP  - 50
EP  - 58
VL  - 69
IS  - 1
PB  - Iop Publishing Ltd
KW  - Chiral Lagrangians
KW  - vector mesons
KW  - 1/N-C expansion
AB  - The strong and electromagnetic corrections to rho-omega mixing are calculated using an SU(2) version of resonance chiral theory up to next-to-leading orders in 1/N-C expansion, respectively. Up to our accuracy, the effect of the momentum dependence of rho-omega mixing is incorporated due to the inclusion of loop contributions. We analyze the impact of rho-omega mixing on the pion vector form factor by performing numerical fit to the data extracted from e(+)e(-) -> pi(+)pi(-) and tau -> nu(tau)2 pi, while the decay width of omega -> pi(+)pi(-) is taken into account as a constraint. It is found that the momentum dependence is significant in a good description of the experimental data. In addition, based on the fitted values of the involved parameters, we analyze the decay width of omega -> pi(+)pi(-), which turns out to be highly dominated by the rho-omega mixing effect.
SN  - 0253-6102
UR  - http://arxiv.org/abs/1710.11448
UR  - https://doi.org/10.1088/0253-6102/69/1/50
DO  - 10.1088/0253-6102/69/1/50
LA  - English
N1  - WOS:000422832600010
ID  - Chen_etal2018
ER  -