Improving bounds on flavor changing vertices in the two Higgs doublet model from $B-\bar{B}$ mixing
| dc.creator | Diaz, Rodolfo A. | |
| dc.creator | Martinez, R. | |
| dc.creator | Sandoval, Carlos E. | |
| dc.date | 2005-09-19 | |
| dc.date.accessioned | 2026-07-07T12:25:15Z | |
| dc.date.available | 2026-07-07T12:25:15Z | |
| dc.description | We find some constraints on the flavor changing vertices of the two Higgs doublet model, from the ΔM_{B_{d}} measurement. Although bounds from this observable have already been considered, this paper takes into account the role of a new operator not included previously, as well as the vertices ξ_{bb}, ξ_{tc} and ξ_{sb}. Using the Cheng-Sher parametrization, we found that for a relatively light charged Higgs boson (200-300 GeV), we get that λ_{tt}<1, while the parameter λ_{bb} could have values up to about 50. In addition, we use bounds for λ_{tt} and λ_{bb} obtained from B^{0}->X_{s}γat next to leading order, and studied the case where the only vanishing vertex factors are the ones involving quarks from the first family. We obtained that ΔM_{B_{d}} is not sensitive to the change of the parameter λ_{sb}, while λ_{tc}<1 | |
| dc.description | 4 pages, 1 figure, LaTeX2e | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0509194 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0509194 | |
| dc.identifier | Eur.Phys.J.C46:403-405,2006 | |
| dc.identifier | doi:10.1140/epjc/s2006-02507-9 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/214561 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Improving bounds on flavor changing vertices in the two Higgs doublet model from $B-\bar{B}$ mixing | |
| dc.type | text |