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QCD predictions for the spin dependent photonic structure function g 1 γ ( x , Q 2 ) in the low x region of future linear colliders

QCD predictions for the spin dependent photonic structure function g 1 γ ( x , Q 2 ) in the low x... The spin dependent structure function g 1 γ ( x , Q 2 ) of the polarized photon is analyzed within the formalism based upon the unintegrated spin dependent parton distributions incorporating the LO Altarelli-Parisi evolution and the double ln 2 ( 1 / x ) resummation at low values of Bjorken parameter x . We analyze the effects of the double ln 2 ( 1 / x ) resummation on the behavior of g 1 γ ( x , Q 2 ) in the low x region which may be accessible in future linear e + e - and e γ colliders. The sensitivity of the predictions on the possible nonperturbative gluon content of the polarized photons is analyzed. Predictions for spin dependent gluon distribution Δ g γ ( x , Q 2 ) are also given. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review D American Physical Society (APS)

QCD predictions for the spin dependent photonic structure function g 1 γ ( x , Q 2 ) in the low x region of future linear colliders

Physical Review D , Volume 63 (5) – Mar 1, 2001
9 pages

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References (37)

Publisher
American Physical Society (APS)
Copyright
Copyright © 2001 The American Physical Society
ISSN
1089-4918
DOI
10.1103/PhysRevD.63.054022
Publisher site
See Article on Publisher Site

Abstract

The spin dependent structure function g 1 γ ( x , Q 2 ) of the polarized photon is analyzed within the formalism based upon the unintegrated spin dependent parton distributions incorporating the LO Altarelli-Parisi evolution and the double ln 2 ( 1 / x ) resummation at low values of Bjorken parameter x . We analyze the effects of the double ln 2 ( 1 / x ) resummation on the behavior of g 1 γ ( x , Q 2 ) in the low x region which may be accessible in future linear e + e - and e γ colliders. The sensitivity of the predictions on the possible nonperturbative gluon content of the polarized photons is analyzed. Predictions for spin dependent gluon distribution Δ g γ ( x , Q 2 ) are also given.

Journal

Physical Review DAmerican Physical Society (APS)

Published: Mar 1, 2001

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