Evans Jared, Luty Markus A
Physics Department, University of California Davis, Davis, California 95616, USA.
Phys Rev Lett. 2009 Sep 4;103(10):101801. doi: 10.1103/PhysRevLett.103.101801. Epub 2009 Aug 31.
We argue that theories of the strong electroweak symmetry breaking sector necessarily contain new spin 0 states at the TeV scale in the tt and tb/bt channels, even if the third generation quarks are not composite at the TeV scale. These states couple sufficiently strongly to third generation quarks to have significant production at LHC via gg --> phi(0) or gb --> tphi(-). The existence of narrow resonances in QCD suggests that the strong electroweak breaking sector contains narrow resonances that decay to tt or tb/bt, with potentially significant branching fractions to 3 or more longitudinal W and Z bosons. These may give new "smoking gun" signals of strong electroweak symmetry breaking.
我们认为，即便第三代夸克在TeV尺度上不是复合的，强电弱对称破缺部分的理论必然在TeV尺度的tt和tb/bt通道中包含新的自旋为0的态。这些态与第三代夸克耦合足够强，从而能够在大型强子对撞机（LHC）中通过gg→φ(0) 或gb→tφ(-) 有显著的产生。量子色动力学（QCD）中窄共振的存在表明，强电弱破缺部分包含衰变为tt或tb/bt的窄共振，其衰变到3个或更多纵向W和Z玻色子的分支比可能很大。这些可能给出强电弱对称破缺的新的“确凿证据”信号。
