3 years ago

Vector mesons and electromagnetic form factor of the $\mathrm{Λ}$ hyperon

Vector mesons and electromagnetic form factor of the $\mathrm{Λ}$ hyperon
Xu Cao, Jian-Ping Dai, Ya-Ping Xie
The measured electromagnetic form factors of $\mathrm{Λ}$ hyperon in the timelike region are significantly deviated from pQCD prediction. We attribute the nonvanishing cross section near threshold to be the contribution of below-threshold $ϕ(2170)$ state, supporting its exotic structure. Above the t...
Open access
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