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Sudakov effects in photon-initiated processes

Abstract:

We consider the effect of the Sudakov factor in photon-initiated processes, corresponding to the no branching probability for the initial-state photon. We demonstrate how such a factor follows simply from the solution of the DGLAP equation for the photon PDF, and is therefore included automatically by this. We use this result to argue that the appropriate scale for the QED coupling α associated with an initial-state photon is not the virtuality of the photon, but rather the factorization scal...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1016/j.physletb.2016.08.004

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Theoretical Physics
Role:
Author
More from this funder
Name:
Science and Technology Facilities Council
Funding agency for:
Harland-Lang, LA
Grant:
ST/L000377/1
More from this funder
Name:
Leverhulme Trust
Grant:
Emeritus Fellowship
More from this funder
Name:
Russian Science Foundation
Grant:
14-22-00281
Publisher:
Elsevier
Journal:
Physics Letters B More from this journal
Volume:
761
Pages:
20-24
Publication date:
2016-08-05
Acceptance date:
2016-08-02
DOI:
EISSN:
1873-2445
ISSN:
0370-2693
Keywords:
Pubs id:
pubs:734155
UUID:
uuid:d43a538f-c8df-4307-ad17-c14dbcc2c433
Local pid:
pubs:734155
Source identifiers:
734155
Deposit date:
2018-10-17

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