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arXiv 0811.3030hep-ph
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利用量子方位角关联确定自旋

Determining Spin through Quantum Azimuthal-Angle Correlations

Matthew R. Buckley, Seong Youl Choi, Kentarou Mawatari, Hitoshi Murayama

摘要:

在下一代对撞机上,确定新粒子的自旋对于在标准模型的各种扩展中确定真正的理论至关重要。不同螺旋度振幅之间的量子干涉被证明是有效的,当最终状态是完全可重构的。然而,许多有趣的新物理过程只允许部分重建。在本文中,我们展示了如何干涉效应可以明确地提取,即使在过程中,有两个倍的模糊性,通过考虑在电子+电子碰撞两个衰变平面之间的相关性。

英文摘要:

Determining the spin of new particles is critical in identifying the true theory among various extensions of the Standard Model at the next generation of colliders. Quantum interference between different helicity amplitudes was shown to be effective when the final state is fully reconstructible. However, many interesting new physics processes allow only for partial reconstruction. In this paper, we show how the interference effect can be unambiguously extracted even in processes that have two-fold ambiguity, by considering the correlation between two decay planes in e+ e- collisions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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