Nonlinear correction to the longitudinal structure function at small x
نویسندگان
چکیده
منابع مشابه
The Longitudinal Structure Function F L at Small X
We present a set of formulae to extract the longitudinal deep inelastic structure function F L from the transverse structure function F 2 and its derivative dF 2 /dlnQ 2 at small x. Using F 2 HERA data we obtain F L in the range 10 −4 ≤ x ≤ 10 −2 at Q 2 = 20 GeV 2. We present here the values of F L (x, Q 2) at small x, extracted from experimental HERA data 1,2 using the method of replacement of...
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A comparison of the H1 data on the longitudinal structure function, FL, at small x with the predictions from the generalized vector dominance / color dipole picture (GVD/CDP) is presented. Using the set of parameters previously determined in the fits to the total cross section, σγ∗p, we find good agreement with the data for FL. Scaling in η = (Q 2 +m0)/Λ (W ) is discussed in detail for the long...
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Calculations are presented of the longitudinal structure function FL(x,Q ). We use next-to-leading order expressions in QCD (O(αs)) plus parton densities determined previously from global fits to data on deep inelastic lepton scattering, prompt photon production, and bottom quark production. Anticipated data from the DESY ep collider HERA should provide discriminating information on the gluon d...
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The longitudinal structure function in deep inelastic scattering is one of the observables from which the gluon distribution can be unfolded. Consequently, this observable can be used to constrain the QCD dynamics at small x. In this work we compare the predictions of distinct QCD models with the recent experimental results for FL(x,Q ) at small x and low Q obtained by the H1 collaboration. We ...
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ژورنال
عنوان ژورنال: The European Physical Journal A
سال: 2010
ISSN: 1434-6001,1434-601X
DOI: 10.1140/epja/i2010-10919-9