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- W4200629066 abstract "Within the nonrelativistic quantum chromodynamics framework, we make a comprehensive study on the exclusive production of excited charmonium and bottomonium in $e^+e^-to gamma^*/Z^0 to|(Qbar{Q})[n]rangle +gamma$ ($Q=c$ or $b$ quarks) at future $Z$ factory, where the $[n]$ represents the color-singlet $n^1S_0,~n^3S_1,~n^1P_0$ and $n^3P_J$ ($n=1,2,3,4; J=0,1,2$) Fock states. The improved trace technology is adopted to derive the analytic expressions at the amplitude level, which is useful for calculating the complicated $nP$-wave channels. Total cross sections, differential distributions, and uncertainties are discussed in system. According to our study, production rates of heavy quarkonia of high excited Fock states are considerable at future $Z$ factory. The cross sections of charmonium for $2S$, $3S$, $4S$, $1P$, $2P$, $3P$ and $4P$-wave states are about $53.5%$, $30.4%$, $23.7%$, $13.7%$, $6.8%$, $9.2%$, and $9.2%$ of that of the $1S$ state, respectively. And cross sections of bottomonium for $2S$, $3S$, $4S$, $1P$, $2P$, $3P$ and $4P$-wave states are about $39.3%$, $12.3%$, $14.3%$, $7.1%$, $3.1%$, $2.7%$, and $3.1%$ of that of the $1S$ state, respectively. The main uncertainties come from the radial wave functions at the origin and their derivatives at the origin under different potential models. Then, such super $Z$ factory should be a good platform to study the properties of the high excited charmonium and bottomonium states." @default.
- W4200629066 created "2021-12-31" @default.
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- W4200629066 date "2021-12-07" @default.
- W4200629066 modified "2023-09-26" @default.
- W4200629066 title "Production of excited heavy quarkonia in $e^+e^- to gamma^*/Z^0 to |(Qbar{Q})[n]rangle +gamma$ at super $Z$ factory" @default.
- W4200629066 hasPublicationYear "2021" @default.
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