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首页> 外文期刊>Physical review, D >Probing the Higgs boson-gluon coupling via the jet energy profile at e+e? colliders
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Probing the Higgs boson-gluon coupling via the jet energy profile at e+e? colliders

机译：通过在e + e处的射流能谱探测希格斯玻色子-胶子耦合？对撞机

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摘要

The effective coupling of the Higgs boson to a gluon pair is one of the most important parameters to test the Standard Model and search for the new physics beyond. In this paper, we propose several new observables based on the jet energy profile to extract the effective coupling. The statistical uncertainties of the effective coupling extracted by using new observables are derived and estimated based on the simulation at the future e + e ? collider for 250?GeV center-of-mass energy and 5 ? ? ab ? 1 integrated luminosity. We found that the statistical uncertainties of effective coupling via the optimized observable can reach about 1.6% in the channels of a Z boson decaying to lepton pairs and is reduced by 52% compared to the relevant uncertainties in the conventional approach. These new observables potentially can be helpful for the measurement of effective coupling at future e + e ? colliders.
机译：希格斯玻色子与胶子对的有效耦合是测试标准模型并寻找新物理的最重要参数之一。在本文中，我们基于射流能量轮廓提出了几种新的可观测值，以提取有效耦合。基于未来e + e？的仿真，推导并估计了使用新观测值提取的有效耦合的统计不确定性。对撞机可获得250？GeV质心能量和5？ ？ Ab？ 1综合发光度。我们发现，通过优化的可观测值进行的有效耦合的统计不确定度在Z玻色子衰变成轻子对的通道中可以达到约1.6％，与传统方法中的相关不确定度相比，降低了52％。这些新的观测值可能有助于将来e + e时有效耦合的测量。对撞机。

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