在LHC上双轻子和双光子事例中重非标准玻色子的自旋识别
Spin identification of heavy nonstandard bosons in dilepton and diphoton events at the LHC
摘要：
新的物理学方案通常预测存在非常重的量子态，这些量子态可能在大型强子对撞机的截面中表现为峰值。对于某些域中的参数值，不同的非标准模型可以生成具有相同质量和相同事件数的峰。在这种情况下，为了确定相关的非标准源，需要对事件进行角度分析的峰值的自旋确定变得至关重要。本文讨论了在LHC中，利用一个特别合适的对称积分角不对称性，对Drell-Yan双轻子和双光子事件，在这些反应中下列重玻色子交换的鉴别达到：自旋为2的Randall-Sundrum引力子激发，自旋为1的重中性规范玻色子Z^ \prime和自旋为0的SUSY R宇称破坏超中微子。
英文摘要：
New Physics scenarios generally predict the existence of very heavy quantum states that can possibly manifest themselves as peaks in the cross sections at the LHC. For values of the parameters in certain domains, different nonstandard models can generate peaks with the same mass and same number of events. In this case, the spin determination of a peak, requiring the angular analysis of the events, becomes crucial in order to identify the relevant nonstandard source. We here discuss, using a particularly suitable symmetrically integrated angular asymmetry applied to Drell-Yan dilepton and diphoton events at LHC, the identification reach on the exchanges in these reactions of the following heavy bosons: spin-2 Randall-Sundrum graviton excitations; spin-1 heavy neutral gauge bosons Z^\prime; and spin-0 SUSY R-parity violating sneutrinos.
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