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High Energy Physics - Phenomenology

arXiv:1307.4194 (hep-ph)
[Submitted on 16 Jul 2013 (v1), last revised 20 Nov 2013 (this version, v2)]

Title:A Proof of Factorization Theorem of Drell-Yan Process at Operator Level

Authors:Gao-Liang Zhou
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Abstract:An alternative proof of factorization theorem for Drell-Yan process that works at operator level is given in the article. Final state interactions for such inclusive processes are proved to be cancel out at operator level according to the unitarity of time evolution operator. After this cancellation, one can always deform the integral path so that eikonal line approximation works while calculating the time evolution of electromagnetic currants. Decoupling of soft gluons from collinear jets is realized by defining new collinear fields that decouple from soft gluons. Cancelation of soft gluons is attribute to unitarity of time evolution operator and light-like Wilson lines of soft gluons.
Comments: 12pages
Subjects: High Energy Physics - Phenomenology (hep-ph)
Cite as: arXiv:1307.4194 [hep-ph]
  (or arXiv:1307.4194v2 [hep-ph] for this version)
  https://doi.org/10.48550/arXiv.1307.4194

Submission history

From: Zhou Gao-Liang [view email]
[v1] Tue, 16 Jul 2013 08:22:30 UTC (8 KB)
[v2] Wed, 20 Nov 2013 14:29:41 UTC (69 KB)
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