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arXiv 1003.3953hep-ph
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同号W对的产生作为LHC双部分子散射的探测

Same-sign W pair production as a probe of double parton scattering at the LHC

Jonathan R. Gaunt, Chun-Hay Kom, Anna Kulesza, W. James Stirling

摘要:

我们研究了在大型强子对撞机上双部分子相互作用中同号W玻色子对的产生。与简单的因式分解双重部分子分布(dPDF)相比,我们表明,最近开发的dPDF,GS 09,导致W玻色子之间的非平凡的运动学相关性。然后,在14 TeV的质心能量下,对使用相同符号的双轻子签名(包括相同符号的WWjj,双玻色子和重味背景)观察这一过程的前景进行了数值研究。结果表明,在LHC上,在单次散射WZ(γ *)产生占主导地位的背景上,可以观察到少量过量的同号双轻子事件。

英文摘要:

We study the production of same-sign W boson pairs at the LHC in double parton interactions. Compared with simple factorised double parton distributions (dPDFs), we show that the recently developed dPDFs, GS09, lead to non-trivial kinematic correlations between the W bosons. A numerical study of the prospects for observing this process using same-sign dilepton signatures, including same-sign WWjj, di-boson and heavy flavour backgrounds, at 14 TeV centre-of-mass energy is then performed. It is shown that a small excess of same-sign dilepton events from double parton scattering over a background dominated by single scattering WZ(gamma*) production could be observed at the LHC.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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