Ultraviolet fixed point and massive composite particles in TeV scales
Ultraviolet fixed point and massive composite particles in TeV scales
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DOI：
10.1016/j.physletb.2014.08.031
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发表时间：
2014-05
影响因子：
4.4
通讯作者：
S. Xue
中科院分区：
文献类型：
--
作者：
S. Xue
我们进一步研究了高维费米子算符的动力学，归因于基本截止(量子引力)和标准模型的宇称破坏规范对称性在理论上的不一致。研究了从对称破缺相到强耦合对称相的相变和四费米子耦合强度下的β函数行为，讨论了临界跃迁点作为紫外光稳定不动点，在这里可以实现保持复合粒子标准模型规范对称性的量子场论。从实现标准模型量子场论的红外稳定不动点外推重正化群方程的解，估算了复合粒子在TeV尺度下的形状因子和质量，并从实验上确定了包括希格斯质量在内的唯象。我们讨论了在大型强子对撞机上可以通过测量相关末态的不变质量及其特殊的动力学分布来实验验证的复合粒子的形成和衰变的可能性。
We present a further study of the dynamics of high-dimension fermion operators attributed to the theoretical inconsistency of the fundamental cutoff (quantum gravity) and the parity-violating gauge symmetry of the standard model. Studying the phase transition from a symmetry-breaking phase to a strong-coupling symmetric phase and theβ-function behavior in terms of four-fermion coupling strength, we discuss the critical transition point as a ultraviolet-stable fixed point where a quantum field theory preserving the standard model gauge symmetry with composite particles can be realized. The form-factors and masses of composite particles at TeV scales are estimated by extrapolating the solution of renormalization-group equations from the infrared-stable fixed point where the quantum field theory of standard model is realized and its phenomenology including Higgs mass has been experimentally determined. We discuss the probability of composite-particle formation and decay that could be experimentally verified in the LHC by measuring the invariant mass of relevant final states and their peculiar kinetic distributions.