CP violation and the H-A lineshape
| dc.creator | Bernabeu, J. | |
| dc.creator | Binosi, D. | |
| dc.creator | Papavassiliou, J. | |
| dc.date | 2007-11-06 | |
| dc.date.accessioned | 2026-07-07T11:38:35Z | |
| dc.date.available | 2026-07-07T11:38:35Z | |
| dc.description | In two-Higgs doublet models (and particularly in the MSSM) the CP-even (H) and CP-odd (A) neutral scalars are nearly degenerate in mass, and their s-channel production would lead to nearly overlapping resonances. CP-violating effects may connect these two Higgs bosons, giving origin to one-loop particle mixing, which, due to their mass proximity, can be resonantly enhanced, altering their lineshape significantly. We show that, in general, the effect of such a CP-violating mixing cannot be mimicked by (or be re-absorbed into) a simple redefinition of the H and A masses in the context of a CP-conserving model. Specifically, the effects of the CP-mixing are such that, either the mass-splitting of the H and A bosons lies outside the range allowed by the theory in the absence of CP-mixing, and/or the detailed energy dependence of the produced lineshape is clearly different from the one obtained by redefining the masses, but not allowing any mixing. | |
| dc.description | 3 pages, 1 figure, based on talk given at the 2007 Europhysics Conference on High Energy Physics, Manchester, 19-25 July | |
| dc.identifier | https://arxiv.org/abs/0711.0935 | |
| dc.identifier | http://arxiv.org/abs/0711.0935 | |
| dc.identifier | J.Phys.Conf.Ser.110:072031,2008 | |
| dc.identifier | doi:10.1088/1742-6596/110/7/072031 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/199615 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | CP violation and the H-A lineshape | |
| dc.type | text |