Anomalous B meson mixing and baryogenesis in a two Higgs doublet model with top-charm flavor violation
S Tulin, P Winslow - arXiv preprint arXiv:1105.2848, 2011 - arxiv.org
S Tulin, P Winslow
arXiv preprint arXiv:1105.2848, 2011•arxiv.orgThere exist experimental hints from the B sector for CP violation beyond the Standard Model
(SM) CKM paradigm. An anomalous dimuon asymmetry was reported by the D0
collaboration, while tension exists between $ B\to\tau\nu $ and $ S_ {\psi K} $. These
measurements, disfavoring the SM at the~ 3$\sigma $ level, can be explained by new
physics in both $ B_d $-$\bar {B} _d $ and $ B_s $-$\bar {B} _s $ mixing, arising from (1)
new bosonic degrees of freedom at or near the electroweak scale, and (2) new, large CP …
(SM) CKM paradigm. An anomalous dimuon asymmetry was reported by the D0
collaboration, while tension exists between $ B\to\tau\nu $ and $ S_ {\psi K} $. These
measurements, disfavoring the SM at the~ 3$\sigma $ level, can be explained by new
physics in both $ B_d $-$\bar {B} _d $ and $ B_s $-$\bar {B} _s $ mixing, arising from (1)
new bosonic degrees of freedom at or near the electroweak scale, and (2) new, large CP …
There exist experimental hints from the B sector for CP violation beyond the Standard Model (SM) CKM paradigm. An anomalous dimuon asymmetry was reported by the D0 collaboration, while tension exists between and . These measurements, disfavoring the SM at the ~3 level, can be explained by new physics in both - and - mixing, arising from (1) new bosonic degrees of freedom at or near the electroweak scale, and (2) new, large CP-violating phases. These two new physics ingredients are precisely what is required for electroweak baryogenesis to work in an extension of the SM. We show that a simple two Higgs doublet model with top-charm flavor violation can explain the B anomalies and the baryon asymmetry of the Universe. Moreover, the presence of a large relative phase in the top-charm Yukawa coupling, favored by - mixing, weakens constraints from and , allowing for a light charged Higgs mass of O(100 GeV).
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