Many leptons at the LHC from the next-to-minimal supersymmetric standard model

作者：Barger Vernon^*; Shaughnessy Gabe; Yencho Brian

来源：Physical Review D - Particles, Fields, Gravitation and Cosmology, 2011, 83(5): 055006.

DOI：10.1103/PhysRevD.83.055006

We present a benchmark in the parameter space of the next-to-minimal supersymmetric standard model (NMSSM) that provides for a dramatic multilepton signal and no jets containing 5 or more leptons resulting from the cascade decays of the third lightest neutralino, chi(0)(3), and the lightest chargino, chi(+/-)(1), via light charged sleptons. This is a very clean signal with almost no standard model (SM) background. In some cases, a total signal of >= 3 leptons + 0 jets can be detected at the 5 sigma level at the LHC running at root s = 7 TeV with approximately 3 fb(-1) of data and with less than 1 fb(-1) when running at root s = 14 TeV. In addition, kinematic edges in the invariant mass distributions of 2, 3, and 4 leptons are easily detectable with large integrated luminosities (similar to 600 fb(-1)) which can lead to simple measurements of the mass differences of heavy particles in the decay chains, including all combinations of the three lightest neutralinos.

• 出版日期2011-3-7
• 单位西北大学