Maltoni Fabio, Mawatari Kentarou, Zaro Marco
Centre for Cosmology, Particle Physics and Phenomenology (CP3), Université Catholique de Louvain, 1348 Louvain-la-Neuve, Belgium.
Theoretische Natuurkunde and IIHE/ELEM, Vrije Universiteit Brussel, and International Solvay Institutes, Pleinlaan 2, 1050 Brussels, Belgium.
Eur Phys J C Part Fields. 2014;74(1):2710. doi: 10.1140/epjc/s10052-013-2710-5. Epub 2014 Jan 25.
Vector-boson fusion and associated production at the LHC can provide key information on the strength and structure of the Higgs couplings to the Standard Model particles. Using an effective field theory approach, we study the effects of next-to-leading order (NLO) QCD corrections matched to a parton shower on selected observables for various spin-0 hypotheses. We find that inclusion of NLO corrections is needed to reduce the theoretical uncertainties on the total rates as well as to reliably predict the shapes of the distributions. Our results are obtained in a fully automatic way via FeynRules and MadGraph5_aMC@NLO.
大型强子对撞机（LHC）上的矢量玻色子融合及伴随产生过程能够提供有关希格斯玻色子与标准模型粒子耦合强度和结构的关键信息。我们采用有效场论方法，研究了与部分子淋浴相匹配的次领头阶（NLO）量子色动力学（QCD）修正对各种自旋为0假设下选定可观测量的影响。我们发现，需要纳入NLO修正以减少总速率的理论不确定性，并可靠地预测分布形状。我们的结果是通过FeynRules和MadGraph5_aMC@NLO以全自动方式获得的。
