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Supersymmetry and Future Colliders

M. M. Nojiri
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Abstract

In this talk, I review precision SUSY study at LHC and TeV scale e+e- linear colliders (LC). We discuss the study of the 3 body decay of the second lightest neutralino χ^0_2--> χ^0_1 ll or the 2 body decay χ^0_2-->\tilde{l}l at LHC. In the former case, the whole m_{ll} distribution observed at LHC would constrain ino mixing and slepton masses. On the other hand, when \tilde{l}l decay is open, the distribution of the asymmetry of the transverse momentum of lepton pair A_T= p_{T1}/p_{T2} peaks at A_E=p_{1}/p_{2} in χ^0_2 rest frame for m_{ll} << m^{max}_{ll} samples, providing another model independent information. The peak position and the edge of the m_{ll} distribution constrain m_{χ^0_2}, m_χ^0_1} and m_{\tilde{l}}. Slepton mass universality may be checked within a few % in the early stage of the experiment. Finally I discuss the physics at TeVscale LC. The mass and couplings of sparticles will be measured withinO(1%) error, and measurement of the radiative correction to the ino-slepton-lepton coupling will determine the first generation squark mass scale even in decoupling scenarios.

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M. M. Nojiri. 1999-07-28. Supersymmetry and Future Colliders. https://arxiv.org/abs/hep-ph/9907530

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