论文标题
在MUON对撞机上揭示术的模型
Unraveling the Scotogenic Model at Muon Collider
论文作者
论文摘要
Scotogenic模型通过三个单元费米昂$ n_i $和一个惰性双重标量$η$扩展了标准模型，以解决微小中微子质量和暗物质的共同起源。对于fermion暗物质$ n_1 $，层级Yukawa结构$ | y_ {1e} | \ ll | y_ {1μ{1μ} | \ sim | y_ | y_ {1τ} | \ sim \ sim \ sim \ mathcal {o}（o}（1）$通常是从Lepton Fluestrain of Cristration and Cripical Intercrative and Crorice and CriliC dentolive中满足的约束。如此大的$ $ $ $相关的Yukawa耦合将大大增强在Muon Collider的带电标量$η^\ pm $的生产。在本文中，我们研究了14 TEV MUON对撞机的Scotogenic模型的DILEPTON特征。对于Dimuon签名$μ^+μ^ - +/ \ hspace {-0.65EM} e_t $，我们发现可以使用$ 200〜 \ text {fb}^{ - 1} $ data对大多数可行的样品进行探测。 ditau签名$τ^+τ^ - +/ \ hspace {-0.65em} e_t $通常不太有前途，但对于探测小$ | y_ {1μ} | $ region很重要。单声音签名$γ+/ \ hspace {-0.65em} e_t $还可以探测压缩质量区域$ m_1 \ sellingsim m_ {η^\ pm} $。大量充电标量$η^\ pm $和暗物质$ n_1 $可以通过Dilepton Energy的binnedilighie fit进一步提取。
The Scotogenic model extends the standard model with three singlet fermion $N_i$ and one inert doublet scalar $η$ to address the common origin of tiny neutrino mass and dark matter. For fermion dark matter $N_1$, a hierarchical Yukawa structure $|y_{1e}|\ll|y_{1μ}|\sim|y_{1τ}|\sim\mathcal{O}(1)$ is usually favored to satisfy constraints from lepton flavor violation and relic density. Such large $μ$-related Yukawa coupling would greatly enhance the pair production of charged scalar $η^\pm$ at the muon collider. In this paper, we investigate the dilepton signature of the Scotogenic model at a 14 TeV muon collider. For the dimuon signature $μ^+μ^-+/ \hspace{-0.65em} E_T$, we find that most viable samples can be probed with $200~\text{fb}^{-1}$ data. The ditau signature $τ^+τ^-+/ \hspace{-0.65em}E_T$ is usually less promising but is important to probe the small $|y_{1μ}|$ region. The mono-photon signature $γ+/ \hspace{-0.65em} E_T$ could also probe the compressed mass region $M_1\lesssim M_{η^\pm}$. Masses of charged scalar $η^\pm$ and dark matter $N_1$ can be further extracted by a binned likelihood fit of the dilepton energy.
