$B^0_{s(d)} - \bar{B}^0_{s(d)} $ mixing and new physics effects in a top quark two-Higgs doublet model
| dc.creator | Lü, Lin-xia | |
| dc.creator | Xiao, Zhen-jun | |
| dc.date | 2006-09-27 | |
| dc.date | 2006-10-13 | |
| dc.date.accessioned | 2026-07-07T12:53:46Z | |
| dc.date.available | 2026-07-07T12:53:46Z | |
| dc.description | We calculate the new physics contributions to the neutral $B_d^0$ and $B_s^0$ meson mass splitting $ΔM_d$ and $ΔM_s$ induced by the box diagrams involving the charged-Higgs bosons in the top quark two-Higgs doublet model (T2HDM). Using the precision data, we obtain the bounds on the parameter space of the T2HDM: (a) for fixed $M_H=400$ GeV and $δ=[0^\circ,60^\circ]$, the upper bound on $\tanβ$ is $\tan β\leq 30$ after the inclusion of major theoretical uncertainties; (b) for the case of $\tanβ \leq 20$, a light charged Higgs boson with a mass around 300 GeV is allowed; and (c) the bounds on $\tanβ$ and $M_H$ are strongly correlated: a smaller (larger) $\tanβ$ means a lighter (heavier) charged Higgs boson. | |
| dc.description | 11 pages, 2 EPS figures, RevTex, new references added | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0609279 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0609279 | |
| dc.identifier | Commun.Theor.Phys.47:1099-1105,2007 | |
| dc.identifier | doi:10.1088/0253-6102/47/6/026 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/223732 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | $B^0_{s(d)} - \bar{B}^0_{s(d)} $ mixing and new physics effects in a top quark two-Higgs doublet model | |
| dc.type | text |