Next - to - Leading Analysis
نویسندگان
چکیده
We present a set of formulae to extract the longitudinal deep inelastic structure function FL from the transverse structure function F2 and its derivative dF2/dlnQ 2 at small x. Our expressions are valid for any value of δ, being x the behavior of the parton densities at low x. Using F2 HERA data we obtain FL in the range 10 −4 ≤ x ≤ 10 at Q = 20 GeV. Some other applications of the formulae are pointed out. E-mail:[email protected] E-mail:[email protected] For experimental studies of hadron-hadron processes on the new, powerful LHC collider, it is necessary to know in detail the values of the parton (quark and gluon) distributions (PD) of nucleons, especially at small values of x. The basic information on the quark structure of nucleons is extracted from the process of deep inelastic lepton-hadron scattering (DIS). Its differential cross-section has the form: dσ dxdy = 2πα em xQ4 [ (
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