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arXiv 1007.5163hep-ph
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大型强子对撞机的eta_c产生

eta_c production at the Large Hadron Collider

Sudhansu S. Biswal, K. Sridhar

摘要:

在非相对论量子色动力学(NRQCD)框架下,利用重夸克对称性研究了1S_0粲偶素态eta_c在大型强子对撞机(LHC)上的产生.我们发现,NRQCD预测了一个大的生产截面,这种共振在大型强子对撞机,即使考虑到小分支比的eta_c到两个光子。我们表明,通过它对eta_c的预测来检验NRQCD是可能的,在LHC的早期阶段,在质心能量为7 TeV,积分亮度为100 pb^{-1}的情况下运行,将获得统计数据。

英文摘要:

We have studied the production of the 1S_0 charmonium state, eta_c, at the Large Hadron Collider (LHC) in the framework of Non-Relativistic Quantum Chromodynamics (NRQCD) using heavy-quark symmetry. We find that NRQCD predicts a large production cross-section for this resonance at the LHC even after taking account the small branching ratio of eta_c into two photons. We show that it will be possible to test NRQCD through its predictions for eta_c, with the statistics that will be achieved at the early stage of the LHC, running at a center of mass energy of 7 TeV with an integrated luminosity of 100 pb^{-1}

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