Simply Unnatural Supersymmetry
Simply Unnatural Supersymmetry
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发表时间：
2012-12
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通讯作者：
N. Arkani-Hamed;Arpit Gupta;D. Kaplan;N. Weiner;Tom Zorawski
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作者：
N. Arkani-Hamed;Arpit Gupta;D. Kaplan;N. Weiner;Tom Zorawski
目前对希格斯质量的测量、引力介导型超对称破缺中圈抑制的加吉诺质量的普遍性质、来自超对称加吉诺质量的残余暗物质密度，以及超对称规范耦合统一的成功，都表明标量超伙伴质量大约为$m_(Sc)\sim$100-1000TeV。如果不是在普朗克级别，黑色子质量通常应该出现在相同的级别上。异常调解产生的伽吉诺质量贡献具有较高的Higgsino阈值，通常导致比标准异常调解更压缩的谱，而在msc附近存在额外的类矢量物质通常会导致更压缩的谱。相对于MSSM，重Higgsinos提高了规范耦合的统一性。重标量暗示了味道物理的新可能性--现在允许在软质量中出现大的味道违反，为新的FCNC产生了有趣的能级，并重新开启了辐射产生费米子质量层次的诱人可能性。Gluinos和binos/winos必须通过更高维运算符衰变，从而为新物理的存在提供了一个独特的句柄，标度为$m_{sc}$。胶子衰变应该是壮观的，例如，产生四个顶端的事件--在适度移动的顶点--和两个希格子加上缺失的能量。高尺度的$m_{sc}也可以在违反风味的胶子衰变中被探测到，以及第三代胶子分支比的特定模式。最后，对于重Higgsinos，中性WINO和BINO的主要衰变通过Higgs$\tide b\到\tide w h$进行。从稀有衰变的分枝比可以推断Higgsinos的质量。
The current measurement of the Higgs mass, the ubiquitous nature of loop-suppressed gaugino masses in gravity-mediated supersymmetry breaking, relic dark matter density from $\sim$ TeV mass gauginos, together with the success of supersymmetric gauge coupling unification, suggest that scalar superpartner masses are roughly $m_{sc} \sim$ 100-1000 TeV. Higgsino masses, if not at the Planck scale, should generically appear at the same scale. The gaugino mass contributions from anomaly mediation, with the heavy Higgsino threshold, generally leads to a more compressed spectrum than standard anomaly mediation, while the presence of extra vector-like matter near $m_{sc}$ typically leads to an even more compressed spectrum. Heavy Higgsinos improve gauge coupling unification relative to the MSSM. Heavy scalars suggest new possibilities for flavor physics -- large flavor violations in the soft masses are now allowed, yielding interesting levels for new FCNC's, and re-opening the attractive possibility of a radiatively generated fermion mass hierarchy. Gluinos and binos/winos must decay through higher dimension operators, giving a unique handle on the presence of new physics the scale $m_{sc}$. Gluino decays should be spectacular, for example yielding events with four tops -- at modestly displaced vertices -- and two Higgses plus missing energy. The high scale $m_{sc}$ can also be probed in flavor-violating gluino decays, as well as a specific pattern of gluino branching ratios to the third generation. Finally, with heavy Higgsinos, the dominant decay for neutral winos and binos proceeds via the Higgs $\tilde b \to \tilde w h$. The heaviness of the Higgsinos can be inferred from the branching ratio for the rare decay $\tilde b \to \tilde w Z$.