Soft-collinear effective theory: BRST formulation

被引：0

作者：

Sudhaker Upadhyay

Bhabani Prasad Mandal

机构：

[1] K.L.S. College (a constituent unit of Magadh University,Department of Physics

[2] Bodh-Gaya),School of Physics

[3] Visiting Associate,Department of Physics, Institute of Science

[4] Inter-University Centre for Astronomy and Astrophysics (IUCAA),undefined

[5] Damghan University,undefined

[6] Banaras Hindu University,undefined

来源：

The European Physical Journal C | 2021年 / 81卷

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摘要：

We provide a BRST formalism for the soft-collinear effective theory describing interactions of soft and collinear degrees of freedom in the presence of a hard interaction. In particular, we develop a BRST symmetry transformation for SCET theory. We further generalize the BRST formulation by making the transformation parameter field dependent. This establishes a mapping between several SCET actions consistently when defined in different gauge conditions. In fact, a definite structure of gauge-fixed actions corresponding to any particular gauge condition can be generated for SCET theory using our formulation.

引用

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