论文标题
联合希格斯 - 标量现场膨胀产生的男性生成
Baryogenesis from combined Higgs - scalar field inflation
论文作者
论文摘要
我们研究了Higgs通货膨胀方案的修改，在其中我们引入了一个额外的标量$ ϕ $，带有质量$ m $，并将Ricci量表与RICCI标量耦合为$ gϕ^2 r $，并与Higgs field $ h $通过lagrangian Term $μxh^2 $混合。这两个领域都在单一理论中参与通货膨胀过程，该理论与普朗克/二头肌/凯克合作的结果一致地预测宇宙学可观察物的价值。 In addition, by means of a $\mathcal{CP}$-odd effective operator that couples $ϕ$ to the Chern-Simons term of the hypercharge gauge group as $f_ϕ^{-1}ϕ\,Y_{μν}\tilde Y^{μν}$, maximally helical magnetic fields are produced during the last $e$-folds of inflation.我们在耦合$ f_ϕ $中找到了一个窗口，其中这些字段在所有限制下都能生存，直到电动相变过渡，并通过标准模型的手性异常来源接宇宙的重子不对称。从现象学的角度来看，该模型可以在规模上解决标准模型不稳定性问题，但前提该理论变得自然。因此，后者预测了可以在HE-LHC以及未来的乘客中探索的三连线和四分之一的耦合的修改，并允许LHC的直接$ ϕ $生产，然后衰减为$ HH $。目前来自Atlas和CMS的结果已经在重型标量的质量上（轻度）限制为$ m \ gtrsim 0.55 $ 〜TEV，在95 \％c.l.
We study a modification of the Higgs inflation scenario where we introduce an extra scalar $ϕ$, with mass $m$, coupled to the Ricci scalar as $gϕ^2 R$, and mixed with the Higgs field $h$ via the Lagrangian term $μϕh^2$. Both fields participate in the inflation process in a unitary theory that predicts values of the cosmological observables in agreement with the results from the Planck/BICEP/Keck collaborations. In addition, by means of a $\mathcal{CP}$-odd effective operator that couples $ϕ$ to the Chern-Simons term of the hypercharge gauge group as $f_ϕ^{-1}ϕ\,Y_{μν}\tilde Y^{μν}$, maximally helical magnetic fields are produced during the last $e$-folds of inflation. We found a window in the coupling $ f_ϕ$ where these fields survive all constraints until the electroweak phase transition, and source the baryon asymmetry of the Universe through the Standard Model chiral anomaly. From a phenomenological perspective, the model can solve the Standard Model instability problem at the scale $\mathcal Q_I\simeq 10^{11}$ GeV, provided that $μ\lesssim m \lesssim \mathcal Q_I$, and for $m\lesssim \mathcal{O}$(few)~TeV, the $ϕ$-$h$ mixing becomes sizable while the theory turns natural. The latter thus predicts modifications of the trilinear and quartic couplings that could be explored at the HE-LHC, as well as at future colliders, and allows for direct $ϕ$ production at the LHC followed by decay into $hh$. Present results from ATLAS and CMS already put (mild) bounds on the mass of the heavy scalar as $m\gtrsim 0.55$~TeV at 95\% C.L.
