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Title
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Effective QCD coupling and power corrections to photon-photon scattering
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Author
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Abstract
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| The scattering of two off-shell photons is an infrared-safe process in QCD. For photon virtualities Q in the range of a few GeV, accessible at the CERN e(+)e(-) collider LEP II, power-behaved contributions in (Lambda(QCD)/Q)(n) to the total cross section may become non-negligible. Based on a dispersion relation for the running coupling, we discuss these contributions and calculate the coefficients of the leading power correction for transversely polarized and longitudinally polarized virtual photons. |
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Language
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English
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Source (journal)
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Physical review letters. - New York, N.Y., 1958, currens
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Publication
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New York, N.Y.
:
American Physical Society
,
1998
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ISSN
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0031-9007
[print]
1079-7114
[online]
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DOI
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10.1103/PHYSREVLETT.80.3198
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Volume/pages
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80
:15
(1998)
, p. 3198-3201
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ISI
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000073016600009
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Full text (Publisher's DOI)
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Full text (open access)
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