论文标题

探测未来电子Proton Collider的单个Higgs生产中的非标准$ hvv(v = w,z)$耦合

Probing non-standard $HVV (V=W, Z)$ couplings in single Higgs production at future electron-proton collider

论文作者

Sharma, Pramod, Shivaji, Ambresh

论文摘要

Higgs Boson($ H $)的耦合与较弱的相互作用($ V = W,Z $)的大量玻色子可以在拟议的未来大型强子电子撞机(LHEC)的单个Higgs玻色子生产中进行探测。在电子与质子的碰撞中,单个希格斯的生产是通过所谓的带电电流($ e^-p \ toν_eh j $)和中性电流($ e^-p \ to e^-h j $)过程进行的。我们探讨了向前射流和散射中微子或电子之间的方位角相关性在探测非标准$ hvv $耦合的collider质量中心能量的$ \ sqrt {s}} \约1.3 $ 〜tev处的潜力。我们选择最通用的修改($ cp $ - even和$ cp $ -odd的自然),因为除了标准模型之外,新的物理效果。我们在$ HVV $耦合的新物理参数上得出了排除限制,这是集成光度的函数,$ 95 \%$ c.l.使用带电和中性流动过程中的方位角角相关性。我们发现,使用1000 $ fb^{ - 1} $数据,可以分别以$ 4 \%$ $ \%$和$ 15 \%$的精确度来限制标准模型的新物理参数和$ hzz $耦合。 $ hww $耦合的最少约束$ cp $的参数可能高达0.04,而$ hzz $耦合的参数可能具有0.31的值。 $ CP $ -ODD参数的允许值分别为$ HWW $,$ HZZ $耦合分别分别约为0.14和0.34。我们还研究了在存在其他参数的情况下,非平凡的新物理参数的允许值的变化。

The couplings of the Higgs boson ($H$) with massive gauge bosons of weak interaction ($V= W, Z$), can be probed in single Higgs boson production at the proposed future Large Hadron-Electron Collider (LHeC). In the collision of an electron with a proton, single Higgs production takes place via so-called charged-current ($e^-p \to ν_e H j$) and neutral-current ($e^-p \to e^-H j$) processes. We explore the potential of the azimuthal angle correlation between the forward jet and scattered neutrino or electron in probing the non-standard $HVV$ couplings at the collider center-of-mass energy of $\sqrt{s} \approx 1.3$~TeV. We choose the most general modifications (of $CP$-even and $CP$-odd nature) to these couplings due to new physics effects beyond the standard model. We derive exclusion limits on new physics parameters of $HVV$ couplings as a function of integrated luminosity at $95\%$ C.L. using the azimuthal angular correlations in charged- and neutral-current processes. We find that using 1000 $fb^{-1}$ data, the standard model-like new physics parameters in $HWW$ and $HZZ$ couplings can be constrained with accuracies of $4\%$ and $15\%$, respectively. The least constrained $CP$-even parameters of $HWW$ coupling can be as large as 0.04, while those of $HZZ$ coupling can have values around 0.31. Allowed values of $CP$-odd parameters in $HWW$ and $HZZ$ couplings are found to be around 0.14 and 0.34, respectively. We also study changes in the allowed values of non-trivial new physics parameters in the presence of other parameters.

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