Angular distribution and forward-backward asymmetry of the Higgs-boson decay to photon and lepton pair

作者：Korchin Alexander Yu^*; Kovalchuk Vladimir A

来源：European Physical Journal C, 2014, 74(11): 3141.

DOI：10.1140/epjc/s10052-014-3141-7

The Higgs-boson decay h -> gamma l(+)l(-) for various lepton states l = (e, mu, tau) is analyzed. The differential decay width and forward-backward asymmetry are calculated as functions of the dilepton invariant mass in a model where the Higgs boson interacts with leptons and quarks via a mixture of scalar and pseudoscalar couplings. These couplings are partly constrained from data on the decays to leptons, h -> gamma l(+)l(-), and quarks h -> q (q) over bar (where q = (c, b)), while the Higgs couplings to the top quark are chosen from the two-photon and two-gluon decay rates. Nonzero values of the forward-backward asymmetry will manifest effects of new physics in the Higgs sector. The decay width and asymmetry integrated over the dilepton invariant mass are also presented.

• 出版日期2014-11-5