The low-Q2, low-Xregion in electroproduction
نویسندگان
چکیده
منابع مشابه
Parton distributions for low Q2.
We extend the MRS(A) set of parton distributions, which provides an upto-date description of the structure of the proton probed by hard interactions, into the region of Q below 5 GeV. After physically-motivated modifications, we obtain a smooth description of the data on the structure function F2(x,Q ) all the way from Q = 10 to 10 GeV.
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Martin Erdmann Universit at Karlsruhe, Engesserstr. 7, D-76128 Karlsruhe, E-mail: [email protected] Recent experimental results on the partonic structure of the photon and on the color singlet exchange in strong interaction processes are reviewed. At the LEP e+e and HERA ep colliders, complementary and consistent measurements have been achieved on the quark-gluon structure of quasi-real a...
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We construct approximate formulas for the O(α3 s ) QCD contributions to the vector current correlator, which is valid for arbitrary values of momenta and masses. The derivation is based on conformal mapping and the Padé approximation procedure and incorporates known expansions in the low energy, threshold and high energy regions. We use our results to estimate additional terms in these expansions.
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izabilities have been formed. These proceedings will concentrate on recent measurments on the neutron via a polarized 3He target in the low Q2 region. In particular, experiment E97-110 was performed in Hall A to study the neutron and 3He spin structure at four-momentum transfers between 0.02 and 0.3 GeV2. This Q2 range allows us to make a benchmark-check of Chiral Perturbation Theory calculatio...
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ژورنال
عنوان ژورنال: Reviews of Modern Physics
سال: 1996
ISSN: 0034-6861,1539-0756
DOI: 10.1103/revmodphys.68.445