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arXiv 0912.3543hep-ph
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标准希格斯玻色子的半轻子衰变

Semileptonic decays of the standard Higgs boson

Bogdan A. Dobrescu, Joseph D. Lykken

摘要:

希格斯玻色子衰变为一对实或虚W玻色子,其中一个衰变为轻子,在标准模型中,当M_h > 120 GeV时,希格斯玻色子衰变的分支比例是所有希格斯衰变中最大的。我们在树的水平上解析地计算这种h -> l νjj衰减的全微分宽度,然后探索一些保留大信号区域的多维切割。未来在Tevatron和LHC中使用这里概述的全微分信息来搜索半轻子衰变,可能对于排除或在希格斯玻色子中以及表征希格斯信号是必不可少的。

英文摘要:

The Higgs boson decay into a pair of real or virtual W bosons, with one of them decaying leptonically, is predicted within the Standard Model to have the largest branching fraction of all Higgs decays that involve an isolated electron or muon, for M_h > 120 GeV. We compute analytically the fully-differential width for this h -> l νjj decay at tree level, and then explore some multi-dimensional cuts that preserve the region of large signal. Future searches for semileptonic decays at the Tevatron and LHC, employing fully-differential information as outlined here, may be essential for ruling out or in the Higgs boson and for characterizing a Higgs signal.

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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