Disentangling CP phases in nearly degenerate resonances: neutralino production via Higgs at a muon collider

Simple item page
dc.creatorDreiner, Herbi K.
dc.creatorKittel, Olaf
dc.creatorvon der Pahlen, Federico
dc.date2007-11-14
dc.date2008-01-11
dc.date.accessioned2026-07-07T12:24:02Z
dc.date.available2026-07-07T12:24:02Z
dc.descriptionIn the CP-violating Minimal Supersymmetric Standard Model, we study the pair production of neutralinos at center-of-mass energies around the heavy neutral Higgs boson resonances. For longitudinally polarized muon beams, we analyze CP asymmetries which are sensitive to the interference of the two heavy neutral Higgs bosons. Due to radiatively induced scalar-pseudoscalar transitions, the CP asymmetries can be strongly enhanced when the resonances are nearly degenerate, as in the Higgs decoupling limit. The Higgs couplings to the neutralino sector can then be analyzed in the presence of CP violating phases. We present a detailed numerical analysis of the cross sections, neutralino branching ratios, and the CP observables. We find that radiatively induced CP violation in the Higgs sector leads to sizable CP-asymmetries, which are accessible in future measurements at a muon collider. However, we expect that our proposed method should be applicable to other processes with nearly degenerate scalar resonances, even at hadron colliders.
dc.description36 pages, 10 figures, minor typos corrected, to appear in JHEP
dc.identifierhttps://arxiv.org/abs/0711.2253
dc.identifierhttp://arxiv.org/abs/0711.2253
dc.identifierJHEP 0801:017,2008
dc.identifierdoi:10.1088/1126-6708/2008/01/017
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/214198
dc.subjectHigh Energy Physics - Phenomenology
dc.titleDisentangling CP phases in nearly degenerate resonances: neutralino production via Higgs at a muon collider
dc.typetext

Files

Collections

arXiv