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arXiv 1206.4418hep-phhep-ex
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LHC上的双部分子散射

Searches for Double Parton Scattering at the LHC

Miroslav Myska

摘要:

利用Herwig++ Monte Carlo事例发生器实现的截面等离子化,给出了14 TeV pp碰撞中多部分子相互作用分数估算的运动学选择判据.研究了μ子衰变通道中W ~+玻色子对的产生。讨论和分析了四类主要的背景过程。这些包括W+W+ jj,W+Z,ZZ和tt'生产的正电荷μ子对。双部分子散射所要求的双μ子最终状态的贡献被认为是约25%的生产截面为0.94 FB。

英文摘要:

Searches for the kinematic selection criteria for estimation of multiple parton interaction fraction in 14 TeV pp collisions are presented using the eikonalization of the cross section implemented in the Herwig++ Monte Carlo event generator. W+ boson pair production is studied in the muon decay channel. Four types of the main background processes are discussed and analyzed. These include W+W+ jj, W+Z, ZZ, and tt' productions of the positively charged muon pairs. The double parton scattering contribution to the requested di-muon final state is found to be around 25 per cent with the production cross section of 0.94 fb.

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