论文标题
在$ u（1）_ {\ rm b-l} $扩展标准型号的ILC探索重型MajoraNA中微子对生产
Probing heavy Majorana neutrino pair production at ILC in a $U(1)_{\rm B-L}$ extension of the Standard Model
论文作者
论文摘要
我们考虑标准模型（SM）的量规B $ -L（BARYON编号减去Lepton Number）的扩展，该扩展在存在三个SM Singlet右手中微子（RHNS）的情况下是无异常的。与$ u（1）_ {\ rm b-l} $规范对称性破裂相关，RHNS获得了Majoraana群众，然后与electroweak对称性破坏，SM（类似）中微子的微小Majorana群众自然产生了SeeSAW机制。由于Seesaw机制，主要由Sm-Singlet Rhns组成的重质量本征通过与SM中微子的小混合获得了抑制的电子相互作用。为了调查SEESAW机制，我们通过$ u（1）_ {\ rm b-l} $ gauge-boson $ z^\ prime $在250 GEV和500 GEV国际线性柯尔（ILC）中研究了重的主要中微子的对生产。考虑到在大型强子对撞机（LHC）中寻找共鸣的$ z^\ prime $玻色子生产的B $ - $ L模型参数的当前和潜在的未来界限，我们专注于“吸烟枪”的“吸烟枪”标志的签名。我们估计ILC签名的预计意义。
We consider a gauged B$-$L (Baryon number minus Lepton number) extension of the Standard Model (SM), which is anomaly free in the presence of three SM singlet Right Handed Neutrinos (RHNs). Associated with the $U(1)_{\rm B-L}$ gauge symmetry breaking, the RHNs acquire Majorana masses and then with the electroweak symmetry breaking, tiny Majorana masses for the SM(-like) neutrinos are naturally generated by the seesaw mechanism. As a result of the seesaw mechanism, the heavy mass eigenstates which are mainly composed of the SM-singlet RHNs obtain suppressed electroweak interactions through small mixings with the SM neutrinos. To investigate the seesaw mechanism, we study the pair production of heavy Majorana neutrinos through the $U(1)_{\rm B-L}$ gauge boson $Z^\prime$ at the 250 GeV and 500 GeV International Linear Collider (ILC). Considering the current and prospective future bounds on the B$-$L model parameters from the search for a resonant $Z^\prime$ boson production at the Large Hadron Collider (LHC), we focus on a "smoking-gun" signature of the Majorana nature of the heavy neutrinos: a final state with a pair of same-sign, same-flavor leptons, small missing momentum, and four hadronic jets. We estimate the projected significance of the signature at the ILC.
