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arXiv hep-ph/0101034hep-ph
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反常介导超对称破缺模型中Slepton和Wino质量的新界

New Bounds on Slepton and Wino Masses in Anomaly Mediated Supersymmetry Breaking Models

Amitava Datta, Anirban Kundu, Abhijit Samanta

摘要:

我们展示了如何从标量势的电弱对称破缺最小值是场空间中的最深点的条件来约束最小反常介导的超对称破缺模型的谱。应用当前的实验边界和扫描整个参数空间,我们排除了低于378 GeV的电子和低于269 GeV的Staus,这些数字具有适度的不确定性。对于给定的slepton质量,我们还发现了一个新的上界。这排除了在正在进行或即将到来的对撞机上产生slepton对的可能性,如Tevatron或$\sqrt{s}=500$ GeV的Next Linear Collider,其中charginos的对产生可能是唯一可用的信号。

英文摘要:

We show how the spectrum of the minimal anomaly-mediated supersymmetry breaking model can be constrained from the condition that the electroweak symmetry breaking minimum of the scalar potential is the deepest point in the field space. Applying the current experimental bounds and scanning over the whole parameter space, we rule out selectrons below 378 GeV and staus below 269 GeV, the numbers having a modest uncertainty. We also find a new upper bound on the wino-like chargino mass for a given slepton mass. This rules out the possibility of slepton pair production at ongoing or upcoming colliders like the Tevatron or the Next Linear Collider at $\sqrt{s}=500$ GeV, where pair production of charginos may be the only available signal.

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