Two-body strong decay of light mesons with Gaussian expansion method

Chen, Xiaoyun; Yan, Z.; Ping, J. L.

doi:10.1142/s0217751x14501759

Cited by 2 publications

(1 citation statement)

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“…In Refs. [44][45][46], the authors also use GEM to calculate the spectrum and open channel strong decays of light mesons and some specific charmonia, where the coupled channel induced mass shift is not considered. Even though the mass shifts can be partly absorbed by redefining the potential, the potential model cannot describe near-threshold effects [47].…”

Section: Introductionmentioning

confidence: 99%

Coupled-channel effects for the bottomonium with realistic wave functions

Anwar

Zou

2016

Phys. Rev. D

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With Gaussian expansion method (GEM), realistic wave functions are used to calculate coupledchannel effects for the bottomonium under the framework of 3 P 0 model. The simplicity and accuracy of GEM are explained. We calculate the mass shifts, probabilities of the B meson continuum, S − D mixing angles, strong and dielectric decay widths. Our calculation shows that both S − D mixing and the B meson continuum can contribute to the suppression of the vector meson's dielectric decay width. We suggest more precise measurements on the radiative decays of Υ(10580) and Υ(11020) to distinguish these two effects. The above quantities are also calculated with simple harmonic oscillator (SHO) wave function approximation for comparison. The deviation between GEM and SHO indicates that it is essential to treat the wave functions accurately for near threshold states.

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