Ghosh Kirtiman, Huitu Katri, Laamanen Jari, Leinonen Lasse
Department of Physics and Helsinki Institute of Physics, University of Helsinki, P.O. Box 64, Helsinki FIN-00014, Finland.
Faculty of Science, Theoretical High Energy Physics, IMAPP, Radboud University Nijmegen, Mailbox 79, P.O. Box 9010, NL-6500 GL Nijmegen, Netherlands.
Phys Rev Lett. 2013 Apr 5;110(14):141801. doi: 10.1103/PhysRevLett.110.141801. Epub 2013 Apr 2.
The degenerate top squark next-to-lightest supersymmetric particle (NLSP) and neutralino (LSP) scenario is well motivated but hard to detect in the collider experiments. We propose a novel signature for detection of this scenario at the Large Hadron Collider and demonstrate its feasibility. In the constrained minimal supersymmetric standard model and top squark NLSP, gluinos are in general much heavier than the lighter top squark and, thus, it decays dominantly to high transverse momentum (p(T)) top-quark-top-squark pairs. We consider gluino pair production and study two high-p(T) top jets and missing energy as the signature of this scenario.
简并顶超对称粒子次最轻超对称粒子(NLSP)和中性子(LSP)的情形有充分的理论依据,但在对撞机实验中很难探测到。我们提出了一种在大型强子对撞机上探测这种情形的新特征,并证明了其可行性。在受限最小超对称标准模型和顶超对称粒子NLSP中,一般来说胶微子比较轻的顶超对称粒子重得多,因此,它主要衰变成高横向动量(p(T))的顶夸克-顶超对称粒子对。我们考虑胶微子对产生,并研究两个高p(T)顶喷注和丢失能量作为这种情形的特征。