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arXiv 1401.7754hep-phhep-ex
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强子对撞机上矢量玻色子融合产生Higgs对的NNLO QCD修正

NNLO QCD corrections to Higgs pair production via vector boson fusion at hadron colliders

Ling Liu-Sheng, Zhang Ren-You, Ma Wen-Gan, Guo Lei, Li Wei-Hua, Li Xiao-Zhou

摘要:

通过矢量玻色子融合测量Higgs对的产生可以用来检验三线性Higgs自耦合和$VVHH$ $(V=Z,W)$四次规范相互作用。本文用结构函数方法计算了在强子对撞机上用$14$、$33$和$100 {\rm TeV}$的质心能量通过矢量玻色子聚变产生SM Higgs玻色子对的次首阶QCD修正,并研究了总截面上的因子化/重整化标度、部分子分布函数和$α_s$的残余不确定性.给出了末态希格斯玻色子的横动量、快度、不变质量和方位角间距的分布。我们观察到由于次-首阶QCD修正,标度不确定性有相当大的数量减少,并且发现总截面对三线性Higgs自耦合很敏感。

英文摘要:

The measurement of the Higgs pair production via vector boson fusion can be used to test the trilinear Higgs self-coupling and the $VVHH$ $(V=Z,W)$ quartic gauge interactions. In this paper we present the calculations of the next-to-next-to-leading-order QCD corrections to the SM Higgs boson pair production via vector boson fusion at hadron colliders with the center-of-mass energy of $14$, $33$, and $100 {\rm TeV}$ by using the structure function approach, and study the residual uncertainties from the factorization/renormalization scale, parton distribution functions and $α_s$ on the total cross section. We also provide the distributions of transverse momenta, rapidities, invariant mass and azimuthal angle separations of final Higgs bosons. We observe a considerable quantitative reduction in the scale uncertainty due to the next-to-next-to-leading-order QCD corrections, and find that the total cross section is sensitive to the trilinear Higgs self-coupling.

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