Pure Gravity Mediation of Supersymmetry Breaking at the LHC
Pure Gravity Mediation of Supersymmetry Breaking at the LHC
复制标题
大型强子对撞机超对称破缺的纯重力介导
DOI：
10.1103/physrevd.87.015028
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发表时间：
2013
影响因子：
5
通讯作者：
Shigeki Matsumoto and Tsutomu T. Yanagida
中科院分区：
文献类型：
--
作者：
Biplob Bhattacherjee;Brian Feldstein;Masahiro Ibe;Shigeki Matsumoto and Tsutomu T. Yanagida
超对称理论可以允许125 GeV的希格斯质量，也可以解决自然性和超对称性问题，现在需要相当程度的复杂性。在这里，我们考虑最简单的可能性，超对称性附近的弱规模，但与自然的要求下降。在“纯引力调解”中，除了高吉诺粒子外，所有超对称粒子的能量都在数万TeV到数千TeV之间，高吉诺粒子通过异常调解和希格斯诺阈值修正自动获得环抑制质量。高吉诺是最轻的超伙伴，我们调查目前的对撞机限制他们的质量，以及未来的大型强子对撞机（LHC）。我们考虑了带有能量特征的胶子对的产生，以及带电的胶子衰变为中性的胶子导致带电轨道消失的事件。我们表明，目前，胶子质量小于约1 TeV和威诺质量小于约300 GeV被排除在外，14 TeV的LHC可以探测胶子质量高达约2 TeV和威诺质量高达1 TeV。
Supersymmetric theories that can allow for a 125 GeV Higgs mass and also solve the naturalness and supersymmetry flavor problems now require a fair degree of complexity. Here we consider the simplest possibility for supersymmetry near the weak scale, but with the requirement of naturalness dropped. In “pure gravity mediation,” all supersymmetric particles except for the gauginos lie at tens to thousands of TeV, with the gauginos obtaining loop suppressed masses automatically by anomaly mediation and Higgsino threshold corrections. The gauginos are the lightest superpartners, and we investigate the current collider constraints on their masses, as well as the future reach of the Large Hadron Collider (LHC). We consider gluino pair production with aenergy signature, as well as events with disappearing charged tracks caused by charged winos decaying into their neutral partners. We show that presently, gluino masses less than about 1 TeV and wino masses less than about 300 GeV are excluded, and that the 14 TeV LHC can probe gluino masses up to about 2 TeV and wino masses up to 1 TeV.