Han T, Marfatia D
Department of Physics, University of Wisconsin-Madison, 53706, USA.
Phys Rev Lett. 2001 Feb 19;86(8):1442-5. doi: 10.1103/PhysRevLett.86.1442.
We study the observability for a lepton flavor-changing decay of a Higgs boson h--> mutau at Hadron colliders. Flavor-changing couplings of a Higgs boson exist at tree level in models with multiple Higgs doublets. The hmutau coupling is particularly motivated by the favorable interpretation of nu(mu)-nu(tau) oscillation. We find that at the Tevatron run II the unique mutau signature could serve as the Higgs discovery channel, surpassing expectations for Higgs boson searches in the SM and in a large parameter region of the MSSM. The sensitivity will be greatly improved at the LHC, beyond the coverage at a muon collider Higgs factory.
我们研究了在强子对撞机中希格斯玻色子h→μτ轻子味改变衰变的可观测性。在具有多个希格斯二重态的模型中，希格斯玻色子的味改变耦合在树图水平上存在。hμτ耦合特别受到对中微子μ-中微子τ振荡的有利解释的推动。我们发现，在Tevatron Run II中，独特的μτ信号可以作为希格斯发现通道，超过了在标准模型和最小超对称标准模型的大参数区域中对希格斯玻色子搜索的预期。在大型强子对撞机上，灵敏度将大大提高，超出μ子对撞机希格斯工厂的覆盖范围。
