Spin dependent structure function g 1 at low x and low Q 2
نویسنده
چکیده
Theoretical description of the spin dependent structure function g1(x,Q) in the region of low values of x and Q2 is presented. It contains the Vector Meson Dominance contribution and the QCD improved parton model suitably extended to the low Q2 domain. Theoretical predictions are compared with the recent experimental data in the low x, low Q2 region.
منابع مشابه
Spin dependent structure function g 1 ( x , Q 2 ) at low x and low Q 2 Barbara Bade
Spin dependent structure function g 1 (x, Q 2) at low x and low Q 2 Barbara Bade lek Abstract: This is a review of experimental and phenomenological investigations of the nucleon spin dependent structure function g 1 at low values of x and Q 2 .
متن کاملar X iv : h ep - p h / 99 07 56 9 v 1 3 0 Ju l 1 99 9 Spin dependent structure function g 1 at low x and low Q 2
Spin dependent structure function g 1 at low x and low Q 2 B. Bade lek a,b Abstract Theoretical description of the spin dependent structure function g 1 (x, Q 2) in the region of low values of x and Q 2 is presented. It contains the Vector Meson Dominance contribution and the QCD improved parton model suitably extended to the low Q 2 domain. Theoretical predictions are compared with the recent ...
متن کاملQCD predictions for spin dependent photonic structure function g γ 1 ( x , Q 2 ) in the low x region of future linear colliders
QCD predictions for spin dependent photonic structure function g γ 1 (x, Q 2) in the low x region of future linear colliders Abstract Spin dependent structure function g γ 1 (x, Q 2) of the polarised photon is analysed within the formalism based upon the unintegrated spin dependent par-ton distributions incorporating the LO Altarelli-Parisi evolution and the double ln 2 (1/x) resummation at low...
متن کاملar X iv : h ep - p h / 98 03 28 8 v 1 9 M ar 1 99 8 Spin Dependent Structure Function g 1 at Low x
Theoretical expectations concerning small x behaviour of the spin dependent structure function g 1 are summarised. This includes discussion of the Regge pole model predictions and of the double ln 2 (1/x) effects implied by perturbative QCD. The quantitative implementation of the latter is described within the unified scheme incorporating both Altarelli-Parisi evolution and the double ln 2 (1/x...
متن کاملX iv : h ep - p h / 99 02 44 0 v 1 2 3 Fe b 19 99 QCD expectations for the spin structure function g 1 in the low x region
The structure function g 1 (x, Q 2) is analysed within the formalism based on unintegrated spin dependent parton distributions incorporating the LO Altarelli-Parisi evolution and the double ln 2 (1/x) resummation at low x. We quantitatively examine possible role of the latter for the small x behaviour of the structure functions g 1 of the nucleon within the region which may be relevant for the ...
متن کامل