Study of late decaying charged particles at future colliders
Study of late decaying charged particles at future colliders
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DOI：
10.1103/physrevd.70.115007
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发表时间：
2004-09
影响因子：
5
通讯作者：
K. Hamaguchi;Y. Kuno;T. Nakaya;M. Nojiri
中科院分区：
文献类型：
--
作者：
K. Hamaguchi;Y. Kuno;T. Nakaya;M. Nojiri
在引力子是最轻的超对称粒子的模型中，次轻的超对称粒子(NLSP)寿命很长。我们考虑了一个重要的带电NLSP候选者，标量tau{tau}-tilde。未来的对撞机可能会产生缓慢充电的NLSP，它们可能会被阻止在一个巨大的塞子中，该塞子同时充当NLSP及其衰变产物的探测器。我们发现，在1kton到O(10)kton的探测器上发生的事件数量足以研究大型强子对撞机上寿命小于10{sup 10}秒的NLSP衰变。现有的1kton探测器的性能可能足以在大型强子对撞机上进行这样的研究，如果它们可以放置在ATLAS/CMS探测器附近的话。在未来的e超对撞机上，大量地产生标量电子e-tide‘S。慢的nlsps可能是由etide{sup-}衰变产生的。在未来的线性对撞机上停止的nlsps的数量可能足够大，足以研究nlsp的罕见衰变模式。
In models where the gravitino is the lightest supersymmetric particle, the next-to-lightest supersymmetric particle (NLSP) is long-lived. We consider an important charged NLSP candidate, the scalar tau {tau}-tilde. Slow charged NLSPs may be produced at future colliders and they may be stopped in a massive stopper which simultaneously serves as a detector for the NLSP and its decay products. We found the number of events at a 1 kton to O(10) kton detector could be significant enough to study the NLSP decays with lifetime shorter than 10{sup 10}sec at the LHC. The performance of existing 1 kton detectors may be good enough to do such studies at the LHC, if they can be placed close to the ATLAS/CMS detectors. At a future e{sup -}e{sup -} collider, scalar electrons e-tilde{sup -}'s are copiously produced. Slow NLSPs may be produced from the e-tilde{sup -} decay. The number of stopped NLSPs at a future linear collider could be large enough to study rare decay modes of the NLSP.