Dipartimento di Fisica, Università di Firenze, Italy.
Phys Rev Lett. 2011 Nov 4;107(19):191601. doi: 10.1103/PhysRevLett.107.191601. Epub 2011 Nov 1.
Ratios of azimuthal angle correlations between two jets produced at large rapidity separation are studied in the N = 4 maximally supersymmetric Yang-Mills (MSYM) theory. It is shown that these observables, which directly prove the SL(2,C) symmetry present in gauge theories in the Regge limit, exhibit an excellent perturbative convergence. They are compared to those calculated in QCD for different renormalization schemes concluding that the momentum-substraction scheme with the Brodsky-Lepage-Mackenzie scale-fixing procedure captures the bulk of the MSYM results.
在 N = 4 最大超对称杨-米尔斯（MSYM）理论中，研究了在大横动量分离下产生的两个喷注之间的方位角关联比。结果表明，这些直接证明了在重整化群极限下规范理论中存在 SL(2,C)对称性的可观测量，表现出极好的微扰收敛性。将其与在不同重整化方案下计算的 QCD 进行了比较，结论是采用 Brodsky-Lepage-Mackenzie 尺度固定程序的动量减除方案捕捉到了 MSYM 结果的大部分。
