SoftWilson lines in the soft-collinear effective theory

Junegone Chay; Chul Kim; Gyun Kim Yeaong; Jong Phil Lee

doi:10.1103/PhysRevD.71.056001

SoftWilson lines in the soft-collinear effective theory

Junegone Chay, Chul Kim, Gyun Kim Yeaong, Jong Phil Lee

Research output: Contribution to journal › Article › peer-review

52 Citations (Scopus)

Abstract

The effects of the soft gluon emission in hard scattering processes at the phase boundary are resummed in the soft-collinear effective theory (SCET). In SCET, the soft gluon emission is decoupled from the energetic collinear part, and is obtained by the vacuum expectation value of the soft Wilson-line operator. The form of the soft Wilson lines is universal in deep inelastic scattering, in the Drell-Yan process, in the jet production from e ⁺e^- collisions, and in the γ*γ* → π⁰ process, but its analytic structure is slightly different in each process. The anomalous dimensions of the soft Wilson-line operators for these processes are computed along the lightlike path at leading order in SCET and to first order in αs, and the renormalization group behavior of the soft Wilson lines is discussed.

Original language	English
Article number	056001
Pages (from-to)	1-21
Number of pages	21
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	71
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevD.71.056001
Publication status	Published - 2005 Mar 1

ASJC Scopus subject areas

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

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abstract = "The effects of the soft gluon emission in hard scattering processes at the phase boundary are resummed in the soft-collinear effective theory (SCET). In SCET, the soft gluon emission is decoupled from the energetic collinear part, and is obtained by the vacuum expectation value of the soft Wilson-line operator. The form of the soft Wilson lines is universal in deep inelastic scattering, in the Drell-Yan process, in the jet production from e +e- collisions, and in the γ*γ* → π0 process, but its analytic structure is slightly different in each process. The anomalous dimensions of the soft Wilson-line operators for these processes are computed along the lightlike path at leading order in SCET and to first order in αs, and the renormalization group behavior of the soft Wilson lines is discussed.",

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AU - Chay, Junegone

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AU - Yeaong, Gyun Kim

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N2 - The effects of the soft gluon emission in hard scattering processes at the phase boundary are resummed in the soft-collinear effective theory (SCET). In SCET, the soft gluon emission is decoupled from the energetic collinear part, and is obtained by the vacuum expectation value of the soft Wilson-line operator. The form of the soft Wilson lines is universal in deep inelastic scattering, in the Drell-Yan process, in the jet production from e +e- collisions, and in the γ*γ* → π0 process, but its analytic structure is slightly different in each process. The anomalous dimensions of the soft Wilson-line operators for these processes are computed along the lightlike path at leading order in SCET and to first order in αs, and the renormalization group behavior of the soft Wilson lines is discussed.

AB - The effects of the soft gluon emission in hard scattering processes at the phase boundary are resummed in the soft-collinear effective theory (SCET). In SCET, the soft gluon emission is decoupled from the energetic collinear part, and is obtained by the vacuum expectation value of the soft Wilson-line operator. The form of the soft Wilson lines is universal in deep inelastic scattering, in the Drell-Yan process, in the jet production from e +e- collisions, and in the γ*γ* → π0 process, but its analytic structure is slightly different in each process. The anomalous dimensions of the soft Wilson-line operators for these processes are computed along the lightlike path at leading order in SCET and to first order in αs, and the renormalization group behavior of the soft Wilson lines is discussed.

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SoftWilson lines in the soft-collinear effective theory

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