Pure gravity mediation of supersymmetry breaking at the Large Hadron Collider
Pure gravity mediation of supersymmetry breaking at the Large Hadron Collider
复制标题
大型强子对撞机超对称破缺的纯重力中介
DOI：
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发表时间：
2012
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通讯作者：
T. Yanagida
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文献类型：
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作者：
B. Bhattacherjee;B. Feldstein;M. Ibe;S. Matsumoto;T. Yanagida
超对称理论允许125GeV的希格斯质量，也可以解决自然度和苏西味道问题，现在需要相当程度的复杂性。这里我们考虑了在弱标度附近超对称性的最简单的可能性，但降低了自然度的要求。在“纯重力调解”中，除了伽吉诺外，所有超对称粒子都位于数万到几千TeV，伽吉诺通过反常调解和希格西诺阈值改正自动获得环路压制质量。加吉诺是最轻的超级伙伴，我们调查了目前对撞机对其质量的限制，以及大型强子对撞机未来的覆盖范围。我们考虑具有喷流+缺失能量信号的胶子对的产生，以及由带电的WINO衰变成中性伙伴而导致的带电轨迹消失的事件。目前，小于1TeV的胶子质量和小于300GeV的WINO质量被排除在外，14TeV LHC可以探测高达2TeV的胶子质量和高达1TeV的WINO质量。
Supersymmetric theories which can allow for a 125 GeV Higgs mass and also solve the naturalness and susy 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 LHC. We consider gluino pair production with a jets + missing energy 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.