论文标题
通过LHC的光子启动过程检测μτ光Z'Boson
Detecting a μτ-philic Z' boson via photon initiated processes at the LHC
论文作者
论文摘要
测量值和哑光异常磁矩的标准模型预测之间的差异是新物理学的可能提示。 $ z^\ prime $粒子具有$μτ$违反耦合的风味可以为MUON异常的磁矩做出很大的贡献，这是由于一环级别的$τ$质量增强，并且已知可以解释上述差异。在本文中，我们研究了大型强子对撞机（LHC）通过$ p p \toμ^-μ^-μ^ - τ^+τ^+ $过程检测这种$ z^\ prime $ boson的潜力。文献中的早期研究仅考虑具有夸克初始状态的生产通道（$ p p \ to q \ bar q \toμ^-μ^-μ^-τ^+τ^+ $）。在这里，我们表明，光子启动过程，$ p p \至γγ\至μ^-μ^ - τ^+τ^+ $，实际上是主要的生产模式，对于重的$ z^\ prime $ boson，质量大于几百GEV。还考虑了高光度（HL）LHC的潜力。
Discrepancy between the measured value and the Standard Model prediction of the muon anomalous magnetic moment is a possible hint for new physics. A $Z^\prime$ particle with $μτ$ flavor violating couplings can give a large contribution to the muon anomalous magnetic moment due to the $τ$ mass enhancement at the one-loop level, and is known to explain the above discrepancy. In this paper, we study the potential of the Large Hadron Collider (LHC) for detecting such a $Z^\prime$ boson via the $p p \toμ^-μ^-τ^+τ^+ $ process. Earlier studies in the literature only considered the production channel with quark initial states ($p p \to q \bar q \toμ^-μ^-τ^+τ^+ $). Here, we show that the photon initiated process, $p p \to γγ\to μ^-μ^-τ^+τ^+ $, is in fact the dominant production mode, for a heavy $Z^\prime$ boson of mass greater than a few hundred GeV. The potential of the high luminosity (HL) LHC is also considered.
