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Photo-production of the Higgs boson at the LHeC
Nuclear Physics B ( IF 2.8 ) Pub Date : 2020-07-29 , DOI: 10.1016/j.nuclphysb.2020.115134
Ruibo Li , Xiang Lv , Bo-Wen Wang , Kai Wang , Tao Xu

As one category of vector boson fusion, photo-production is one important production mechanism at e-p colliders. A future e-p collider – Large Hadron-electron Collider (LHeC) has been discussed as a “Higgs factory” candidate where the Higgs boson produced via weak boson fusion (WBF) at the LHeC plays an important role in precision measurement of Yukawa couplings. On the other hand, a measurement of photo-production of the Higgs boson, if possible, might be complementary to the measurement of Higgs to di-photon partial decay width Γ(hγγ). In this paper, we study the possibility of measuring this production process at the LHeC with the help of the photon PDFs published in recent years. This process has a clean final state without additional colored particles in the detectable region other than the decay products of the Higgs. We compute the cross sections of all related processes and find that the production rate is at the same order as the neutral current WBF production of Higgs boson with missing forward jets. However, a detailed phenomenological study of various Higgs decay channels shows that even in the most promising semi-leptonic WW channel, the feasibility of identifying such photo-production is negative due to an irreducible photo-production of W+W.



中文翻译:

LHeC的希格斯玻色子的照片制作

作为矢量玻色子融合的一类,照相生产是e - p对撞机的一种重要生产机理。未来的ë - p撞机-大型强子对电子对撞机(LHeC)已为其中Higgs粒子经由弱色子融合(WBF)公司生产的“希格斯工厂”候选在LHeC讨论起着汤川联轴器精密测量中起重要作用。另一方面,如果可能的话,对希格斯玻色子的光产生的测量可能是对希格斯至双光子部分衰减宽度的测量的补充。ΓHγγ。在本文中,我们研究了借助近年来发布的光子PDF在LHeC上测量此生产过程的可能性。该过程具有干净的最终状态,在希格斯衰变产物之外的可检测区域中没有其他有色粒子。我们计算了所有相关过程的横截面,发现生产率与希格斯玻色子的中性当前WBF产量(缺少前向喷射器)处于同一数量级。但是,对各种希格斯衰变通道的详细现象学研究表明,即使在最有希望的半轻体WW通道中,由于无法还原的光产生,识别这种光产生的可行性也是负面的。w ^+w ^-

更新日期:2020-08-03
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