Higgs boson production in gluon fusion

por Michael Kubocz (RWTH Aachen University, Germany)

jueves 26 sept. 2013 12:00 → 13:00 Europe/Madrid

Seminar Room 1-1-1 at IFIC (Universe)

In high energy hadronic collisions a scalar (or pseudoscalar) Higgs boson can be efficiently produced via gluon fusion which is mediated by heavy quark loops. Double (triple) real emission corrections lead to a Higgs plus two (three)-jets final state, at order alpha_s^4 (alpha_s^5). The 2-jets case is a promising channel to measure the CP-properties of the Higgs boson with the help of the azimuthal angle correlation of the two tagging jets, since it is sensitive to the Higgs-Fermion coupling. A further aspect of interest is the modification of this correlation by emission of additional jets, that is, at least by a third jet. We present results for several differential distributions and show deviations from the broadly used effective theory which approximates Fermion loops by point-like interactions.