A subtraction scheme for massive QED

Journal of High Energy Physics

T. Engel¹  A. Signer¹  Y. Ulrich¹ 

[1] Paul Scherrer Institut;

关键词: Precision QED;    Perturbative QCD;    Scattering Amplitudes;    Effective Field Theories;   

DOI  :  10.1007/JHEP01(2020)085

来源: DOAJ

【 摘 要 】

Abstract We present an extension of the FKS subtraction scheme beyond next-to-leading order to deal with soft singularities in fully differential calculations within QED with mas- sive fermions. After a detailed discussion of the next-to-next-to-leading order case, we show how to extend the scheme to even higher orders in perturbation theory. As an application we discuss the computation of the next-to-next-to-leading order QED corrections to the muon decay and present differential results with full electron mass dependence.

【 授权许可】

Unknown