论文标题
$ u（1）_ {b-l} $ MSSM扩展
Sparticle Spectroscopy and Dark Matter in a $U(1)_{B-L}$ extension of MSSM
论文作者
论文摘要
我们考虑了一类SUSY模型，其中MSSM量规组补充了一个测量的$ u（1）_ {b-l} $对称性和全局$ u（1）_ {r} $对称。这一扩展只引入了电气中性状态，而新的Susy合作伙伴有效地将Neutmalino行业的状态数量增加了一倍，该州现在包括Blino（来自$ b-l $）和Singlet Singlet Superfield的Singlino。如果DM密度被LSP中性诺饱和，则该模型会根据DM组成而产生相当丰富的现象学。 LSP遗物密度约束在停止上提供了一个下限，而Gluino质量分别为3 TEV和4 TEV，这在不久的将来的对撞机实验（例如HL-LHC）中是可检验的。 Chargino质量位于0.24 TEV和约2.0 TEV之间，可以根据允许的衰减通道进行测试。我们还发现$ m _ {\tildeτ_{1}} \ gtrsim 500 $ gev和$ m _ {\ tilde {e}}，m _ {\tildeμ}，m _ {\tildeμ}，m _ {\tildeν^{s，p}} {s，p}}}我们确定群众区域中的chargino-neutrinino销售过程$ 0.24 \，{\ rm tev} \ sillsim m _ {\tildeχ_{1}^{0}}} {0}}} \ oil涉及Stau，Selectron，Smuon和Sneutrinos，以大约1 TEV的群众。此外，在1个TEV左右发现了$ a_ {2} $共振解决方案，$ h_ {2} $和$ h_ {3} $ resonance解决方案也显示在0.5 tev和1 TEV左右。 $ \tanβ\ gtrsim 20 $的$ a_ {2} $共振解决方案可以通过$ a/h \rightarrowτ^{+}τ^{ - } $ lhc搜索来测试。虽然遗物密度约束不包括类似Bino的DM，但对于各种质量尺度，仍然可以实现Higgsino，Singlino和类似Blino的DM。我们表明，所有这些解决方案将在未来的直接检测实验中进行测试，例如Lux-Zeplin和Xenon-NT。
We consider a class of SUSY models in which the MSSM gauge group is supplemented with a gauged $U(1)_{B-L}$ symmetry and a global $U(1)_{R}$ symmetry. This extension introduces only electrically neutral states, and the new SUSY partners effectively double the number of states in the neutralino sector that now includes a blino (from $B-L$) and singlino from a gauge singlet superfield. If the DM density is saturated by a LSP neutralino, the model yields quite a rich phenomenology depending on the DM composition. The LSP relic density constraint provides a lower bound on the stop and gluino masses of about 3 TeV and 4 TeV respectively, which is testable in the near future collider experiments such as HL-LHC. The chargino mass lies between 0.24 TeV and about 2.0 TeV, which can be tested based on the allowed decay channels. We also find $m_{\tildeτ_{1}}\gtrsim 500$ GeV, and $m_{\tilde{e}},m_{\tildeμ},m_{\tildeν^{S,P}} \gtrsim 1$ TeV. We identify chargino-neutralino coannihilation processes in the mass region $0.24 \,{\rm TeV} \lesssim m_{\tildeχ_{1}^{0}}\approx m_{\tildeχ_{1}^{\pm}}\lesssim 1.5$ TeV, and also coannihilation processes involving stau, selectron, smuon and sneutrinos for masses around 1 TeV. In addition, $A_{2}$ resonance solutions are found around 1 TeV, and $H_{2}$ and $H_{3}$ resonance solutions are also shown around 0.5 TeV and 1 TeV . Some of the $A_{2}$ resonance solutions with $\tanβ\gtrsim 20$ may be tested by the $A/H\rightarrow τ^{+}τ^{-}$ LHC searches. While the relic density constraint excludes the bino-like DM, it is still possible to realize higgsino, singlino and blino-like DM for various mass scales. We show that all these solutions will be tested in future direct detection experiments such as LUX-Zeplin and Xenon-nT.
