Gluon Fusion Contribution to V Hj Production at Hadron Colliders

AbstractWe study the associated production of an electroweak vector boson and the Higgs bosonwith a jet via gluon-gluon fusion. At the leading order, these processes occur at one-looplevel. The amplitudes of these one-loop processes are gauge invariant and nite. Therefore,their contributions towards the corresponding hadronic cross sections and kinematic distri-butions can be calculated separately. We present results for the Large Hadron Collider andits discussed upgrades. We nd that the gluon-gluon one-loop process gives dominant contri-bution to the Hjproduction. We observe a destructive interference e ect in the gg!ZHjamplitude. We also nd that in the high transverse momentum and central rapidity region,the ZHjproduction cross section via gluon-gluon fusion becomes comparable to the crosssection contributions coming from quark-quark and quark-gluon channels. PACS numbers: 12.38-t, 12.38.Bx, 13.85.LgKeywords: LHC, Gluon Fusion, Higgs, One-loopRECAPP-HRI-2014-0201 arXiv:1409.8059v1 [hep-ph] 29 Sep 2014