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Assessing QCD in deep-inelastic eγ scattering

Peterson, C. LU ; Zerwas, P. M. and Walsh, T. F. (1983) In Nuclear Physics, Section B 229(2). p.301-316
Abstract

We consider hadron production in deep inelastic scattering of electrons on photons. 1. (i)Exploiting the leading order QCD corrections due to gluon bremsstrahlung we find that the photon structure functions rapidly approach their asymptotic form which can be calculated in QCD. 2. (ii)Replacing QCD by a theory with a fixed quark-gluon coupling constant (scalar or abelian gluons) gives dramatic changes: for Bjorken x away from 0, the asymptotic form of the structure function is scale-invariant, with a shape quite unlike the QCD shape, and the structure function diverges for x = 0. 3. (iii)The pointlike component of the photon gives final state jets emerging at large angles to the axis of the real + virtual photon, in contrast to the... (More)

We consider hadron production in deep inelastic scattering of electrons on photons. 1. (i)Exploiting the leading order QCD corrections due to gluon bremsstrahlung we find that the photon structure functions rapidly approach their asymptotic form which can be calculated in QCD. 2. (ii)Replacing QCD by a theory with a fixed quark-gluon coupling constant (scalar or abelian gluons) gives dramatic changes: for Bjorken x away from 0, the asymptotic form of the structure function is scale-invariant, with a shape quite unlike the QCD shape, and the structure function diverges for x = 0. 3. (iii)The pointlike component of the photon gives final state jets emerging at large angles to the axis of the real + virtual photon, in contrast to the hadronic component of the photon.

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author
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publishing date
type
Contribution to journal
publication status
published
in
Nuclear Physics, Section B
volume
229
issue
2
pages
16 pages
publisher
North-Holland
external identifiers
  • scopus:0007094637
ISSN
0550-3213
DOI
10.1016/0550-3213(83)90334-6
language
English
LU publication?
no
id
e143e343-7739-42f6-9029-afc7ae5ef808
date added to LUP
2019-05-14 17:16:04
date last changed
2021-01-03 04:55:57
@article{e143e343-7739-42f6-9029-afc7ae5ef808,
  abstract     = {{<p>We consider hadron production in deep inelastic scattering of electrons on photons. 1. (i)Exploiting the leading order QCD corrections due to gluon bremsstrahlung we find that the photon structure functions rapidly approach their asymptotic form which can be calculated in QCD. 2. (ii)Replacing QCD by a theory with a fixed quark-gluon coupling constant (scalar or abelian gluons) gives dramatic changes: for Bjorken x away from 0, the asymptotic form of the structure function is scale-invariant, with a shape quite unlike the QCD shape, and the structure function diverges for x = 0. 3. (iii)The pointlike component of the photon gives final state jets emerging at large angles to the axis of the real + virtual photon, in contrast to the hadronic component of the photon.</p>}},
  author       = {{Peterson, C. and Zerwas, P. M. and Walsh, T. F.}},
  issn         = {{0550-3213}},
  language     = {{eng}},
  month        = {{12}},
  number       = {{2}},
  pages        = {{301--316}},
  publisher    = {{North-Holland}},
  series       = {{Nuclear Physics, Section B}},
  title        = {{Assessing QCD in deep-inelastic eγ scattering}},
  url          = {{http://dx.doi.org/10.1016/0550-3213(83)90334-6}},
  doi          = {{10.1016/0550-3213(83)90334-6}},
  volume       = {{229}},
  year         = {{1983}},
}