论文标题
未来$ e^+e^ - $ colliders的$ b_c $ meson的光生效
Photoproduction of the $B_c$ meson at the future $e^+e^-$ colliders
论文作者
论文摘要
在本文中，我们研究了各种$ s $ -Wave $ b_c $状态的光生产，即$ b_c（1 {}^1S_0）$，$ b_c^*（1 {}^1s_0）$，$ b_c（$ b_c（$ b_c（2 {}}}^1s_0）在非权利主义QCD框架内的山脉。初始光子的两个来源可以在生产中实现，即LBS光子和WWA光子。 In addition to the direct photoproduction via the sub-process, $γ+ γ\rightarrow B_c + b + \bar{c}$, we also calculate the resolved photoproduction via the sub-processes, $γ+ g \rightarrow B_c + b + \bar{c}$ and $q + \bar{q} \rightarrow B_c + b + \ bar {c} $带有$ q = u，d，s，g $。数值结果表明，在某些碰撞构型中，单个分辨光增生的贡献显着，甚至显着。在未来的高能量和高亮度$ e^+e^ - $ colleders上，通过光增生机制生成的$ b_c $ meson是有希望可以观察到的，并且可以很好地研究。
In the present paper, we study the photoproduction of various $S$-wave $B_c$ states, i.e. $B_c(1{}^1S_0)$, $B_c^*(1{}^1S_0)$, $B_c(2{}^1S_0)$ and $B^*_c(2{}^3S_1)$, at future $e^+e^-$ colliders within the framework of non-relativistic QCD. Two sources of the initial photons can be realized in the production, i.e., the LBS photon and the WWA photon. In addition to the direct photoproduction via the sub-process, $γ+ γ\rightarrow B_c + b + \bar{c}$, we also calculate the resolved photoproduction via the sub-processes, $γ+ g \rightarrow B_c + b + \bar{c}$ and $q + \bar{q} \rightarrow B_c + b + \bar{c}$ with $q=u,d,s,g$, respectively. Numerical results indicate that the contributions from the single resolved photoproduction are significant and even dominant at certain collision configuration. At the future high-energy and high-luminosity $e^+e^-$ colliders, the $B_c$ meson generated via the photoproduction mechanism is promisingly observable and can be well studied.
