标题： 在费米实验室Tevatron和CERN LEP对撞机上寻找轻引力子的超对称性 显示英文标题

标题： Search for supersymmetry with a light gravitino at the Fermilab Tevatron and CERN LEP colliders

摘要： 我们分析了在费米实验室Tevatron和CERN LEP对撞机上发现超对称性的前景，在轻est超对称粒子是质量<1 keV的引力子的情景下。我们特别考虑了最轻中性子在探测器内有近100%分支比衰变为引力子+光子的情况。这意味着超对称事件应该既包含缺失（横向）能量又包含两个高能光子。因此，可以通过超对称伙伴的包容性产生来搜索超对称性。我们研究了Tevatron在探索超对称参数空间方面的排除能力和可达范围，并研究了在这种搜索中可以达到的效率。我们还研究了LEP在$\sqrt{s} =$为160、175和190 GeV时的发现能力及背景。 显示英文摘要

摘要： We analyze the prospects for discovering supersymmetry at the Fermilab Tevatron and CERN LEP colliders in the scenario that the lightest supersymmetric particle is a gravitino of mass < 1 keV. We consider in particular the case that the lightest neutralino has a nearly 100% branching fraction into gravitino + photon within the detector. This implies that supersymmetric events should contain both missing (transverse) energy and two energetic photons. Therefore one can search for supersymmetry simply through inclusive production of superpartners. We consider the exclusion and reach capabilities of the Tevatron in exploring the supersymmetric parameter space, and study the efficiencies which can be achieved in this search. We also consider the discovery reach and backgrounds at LEP with $\sqrt{s} =$ 160, 175, and 190 GeV.