However, this kind of duality will be broken at higher twist amplitude. 然而,这种对偶性在高扭度振幅情况下会被破坏。
Understandings of this x_p rescaling from both the free field operator product expansion ( OPE ) and the ordinary OPE are also given, indicating that it is likely a higher order effect in the coefficient functions; i.e., it does not belong to the higher twist effect. 本文也给出了从自由场算符乘积展开(OPE)方法和一般OPE方法对xp重新标度的理解,指出它很可能是光锥展开系数中的一种高阶效应而不属于高挠度效应。
The methods avoiding the IR divergences are discussed, which can be used in the derivations of the evolution kernels and coefficient functions at higher twist level. 讨论了避免红外发散的方法,这种方法可以用于高扭度下演化核和系数函数的推导。
With the HERA experiment data of nucleon structure function and it's slope, we discuss the probability of higher twist recombination effect in Quantum Chromodynamics evolution equation. 结合HERA有关核子结构函数与其斜率的实验数据,讨论了在量子色动力学演化方程中存在高扭度重组效应的可能性。
Using this new method, one can easily calculate the amplitude for gluon radiation of multiple scattering, which gives a road to resum all higher twist contributions. 利用这种方法,可以容易的计算出多重散射的胶子辐射振幅,这也为重求和各阶的贡献开辟了一条新途径。