论文标题
从过渡电磁形式因素$γ^*γ^*η_c（1s，2s）$到LHC的$η_c（1s，2s）$的生产
From transition electromagnetic form factors $γ^* γ^* η_c(1S,2S)$ to the production of $η_c(1S,2S)$ at the LHC
论文作者
论文摘要
我们回顾了$γ^*γ^* \ $η_c（1s）$和$η_c（2s）$的最新结果，以通过Gluon-Gluon Fusion和Proton-Proton Collisisions和proton-Proton碰撞。 Quarkonium波函数是通过解决不同$ c \ bar c $电位的schrödinger方程来计算的。使用Terentev处方，获得了轻锥波函数。然后使用轻锥函数来计算$γ^*γ^* \至η_c$过渡形式。将理论结果与$η_C（1s）$的Belle实验数据进行比较。此外，我们讨论了两光子衰减宽度的结果。我们还介绍了我们计算的结果，用于在$ k_t $ -Factorization方法中获得的质子 - 普罗顿碰撞，以用于不同的未整合Gluon分布。将$η_C（1s）$的载量生生效的结果与LHCB实验数据进行了比较。
We review our recent results for production of $η_c(1S)$ and $η_c(2S)$ in the $γ^* γ^* \to η_c(1S,2S)$ fusion and in proton-proton collisions via gluon-gluon fusion. The quarkonium wave functions are calculated by solving Schrödinger equation for different $c \bar c$ potentials. Using Terentev prescription the light-cone wave functions are obtained. The light-cone wave functions are used then to calculate $γ^* γ^* \to η_c$ transition form factors. The theoretical results are compared to the Belle experimental data for $η_c(1S)$. In addition we discuss our results for two-photon decay width. We present also results of our calculations for proton-proton collisions obtained within $k_T$-factorization approach for different unintegrated gluon distributions. The results for hadroproduction of $η_c(1S)$ are compared to the LHCb experimental data.
