Abstract
We investigate how the quantum numbers of a neutral Higgs boson or spin-zero resonance , produced at the CERN Large Hadron Collider, can be determined in its -pair decay mode . We use a method [S. Berge and W. Bernreuther, Phys. Lett. B 671, 470 (2009).] based on the distributions of two angles and apply it to the major 1-prong decays. We show for the resulting dilepton, lepton-pion, and two-pion final states that appropriate selection cuts significantly enhance the discriminating power of these observables. From our analysis we conclude that, provided a Higgs boson will be found at the LHC, it appears feasible to collect the event numbers needed to discriminate between a -even and -odd Higgs boson and/or between Higgs boson(s) with -conserving and -violating couplings after several years of high-luminosity runs.
5 More- Received 8 August 2011
DOI:https://doi.org/10.1103/PhysRevD.84.116003
© 2011 American Physical Society