Rapidity divergences and deep inelastic scattering in the endpoint region

Sean P Fleming, Ou Z. Labun

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The deep inelastic scattering cross section in the endpoint region x∼1 has been subjected to extensive analysis. We revisit this process using soft collinear effective theory, and show that in the endpoint individual factors in the factorized hadronic tensor have rapidity divergences. We regulate these divergences using a recently introduced rapidity regulator, and find that each operator matrix element requires a different scale to minimize large rapidity logarithms. However, the running in rapidity is nonperturbative and must be absorbed into the definition of the parton distribution function.

Original languageEnglish (US)
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume91
Issue number9
DOIs
StatePublished - May 12 2015

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divergence
inelastic scattering
regulators
logarithms
partons
scattering cross sections
distribution functions
tensors
operators

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Rapidity divergences and deep inelastic scattering in the endpoint region. / Fleming, Sean P; Labun, Ou Z.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 91, No. 9, 12.05.2015.

Research output: Contribution to journalArticle

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