Extended Data Fig. 1: Example of combinatorial-background-subtracted invariant-mass distributions and the extracted yields as a function of cosθ* for ϕ and K^*0 mesons.

a, Example of ϕ → K⁺ + K⁻ invariant-mass distributions, with combinatorial background subtracted, integrated over cosθ*. b, Example of \({{\rm{K}}}^{* 0}\,(\bar{{{\rm{K}}}^{* 0}})\to {{\rm{K}}}^{-}{{\rm{\pi }}}^{+}\,({{\rm{K}}}^{+}{{\rm{\pi }}}^{-})\) invariant-mass distributions, with combinatorial background subtracted, integrated over cosθ*. c, Extracted yields of ϕ as a function of cosθ*. d, Extracted yields of K^*0 as a function of cosθ*.