论文标题

希格斯字段的第二个共振:来自LHC实验的更多信号

Second resonance of the Higgs field: more signals from the LHC experiments

论文作者

Consoli, Maurizio, Cosmai, Leonardo, Fabbri, Fabrizio

论文摘要

理论论点和晶格模拟表明,除了质量$ m_h = $ 125 GEV之外,Higgs领域可能会表现出第二个共振,并具有较大的质量$ $ $(M_H)^{\ rm理论} = 690 \ 690 \ pm 10〜({\ rm Stat})然而,这将以与125 GEV处的低质量状态相同的强度与纵向W相对,因此代表了Gluon-Gluon融合在LHC产生的相对狭窄的共振。 By looking for some evidence in the LHC data, we argue that the existence of a new resonance in the predicted mass region finds support in two analyses by ATLAS (searching for heavy resonances decaying into final states with 4 charged leptons or $γγ$ pairs) and in more recent CMS results (searching for heavy resonances decaying into a pair of $h(125)$ bosons or looking for $γγ$ pairs produced in $ pp $ double-Diffractive散射)。由于这些测量值的相关性非常小,并且由于具有一些确定的理论预测,因此与纯背景的局部偏差不会被else-elsesewhere效应降级,因此我们强调了本情况的不稳定性,可能仅通过添加两个关键的,缺少Run2数据的缺失样本来解决,这些偏差可能可以解决。

Theoretical arguments and lattice simulations suggest that, beside the known resonance of mass $m_h=$ 125 GeV, the Higgs field might exhibit a second resonance with a larger mass $(M_H)^{\rm theor} = 690 \pm 10 ~({\rm stat}) \pm 20 ~({\rm sys})~ {\rm GeV}$ which, however, would couple to longitudinal W's with the same typical strength as the low-mass state at 125 GeV and thus represent a relatively narrow resonance mainly produced at LHC by gluon-gluon fusion. By looking for some evidence in the LHC data, we argue that the existence of a new resonance in the predicted mass region finds support in two analyses by ATLAS (searching for heavy resonances decaying into final states with 4 charged leptons or $γγ$ pairs) and in more recent CMS results (searching for heavy resonances decaying into a pair of $h(125)$ bosons or looking for $γγ$ pairs produced in $pp$ double-diffractive scattering). Since the correlation of these measurements is very small and since, having some definite theoretical prediction, local deviations from the pure background are not downgraded by the look-elsewhere effect, we emphasize the instability of the present situation that could probably be resolved by just adding two crucial, missing samples of RUN2 data.

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