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arXiv 2106.05280hep-thhep-ph
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三圈色-运动学对偶性:由新的广义规范变换导出的24维解空间

Three-loop color-kinematics duality: A 24-dimensional solution space induced by new generalized gauge transformations

Guanda Lin, Gang Yang, Siyuan Zhang

摘要:

基于色运动学对偶性和在壳么正性,我们得到了N=4 SYM中应力张量超多重态的全色三圈三点形状因子和长度为3的半BPS算子的全色三圈三点形状因子.所有平面和非平面么正性切割都验证了被积函数的结果,它们满足圈动量的最小幂次计数和图解对称性。有趣的是,这些三回路的解决方案,而体现所有的对偶雅可比关系,包含大量的自由参数,特别是,有24个自由参数的形状因子的应力张量超多重态。这样的自由度是由于一种新的类型的广义规范变换与形状因子的运营商插入。我们还进行了数值积分,并获得一致的全色红外发散和已知的平面余数。我们得到的形状因子可以理解为三圈Higgs和三胶子振幅在QCD中的N=4 SYM对应物,并有望提供后者的最大超越部分。

英文摘要:

We obtain full-color three-loop three-point form factors of the stress-tensor supermultiplet and also of a length-3 half-BPS operator in N=4 SYM based on the color-kinematics duality and on-shell unitarity. The integrand results are verified by all planar and non-planar unitarity cuts, and they satisfy the minimal power-counting of loop momenta and diagrammatic symmetries. Interestingly, these three-loop solutions, while manifesting all dual Jacobi relations, contain a large number of free parameters; in particular, there are 24 free parameters for the form factor of stress-tensor supermultiplet. Such degrees of freedom are due to a new type of generalized gauge transformation associated with the operator insertion for form factors. We also perform numerical integration and obtain consistent full-color infrared divergences and the known planar remainder. The form factors we obtain can be understood as the N=4 SYM counterparts of three-loop Higgs plus three-gluon amplitudes in QCD and are expected to provide the maximally transcendental parts of the latter.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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