Assessing QCD in deep-inelastic eγ scattering

C. Peterson; P. M. Zerwas; T. F. Walsh

doi:10.1016/0550-3213(83)90334-6

Assessing QCD in deep-inelastic eγ scattering

C. Peterson, P. M. Zerwas, T. F. Walsh

Stanford University

Research output: Contribution to journal › Article › peer-review

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 hadronic component of the photon.

Original language	English
Pages (from-to)	301-316
Number of pages	16
Journal	Nuclear Physics, Section B
Volume	229
Issue number	2
DOIs	https://doi.org/10.1016/0550-3213(83)90334-6
Publication status	Published - 1983 Dec 19
Externally published	Yes

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title = "Assessing QCD in deep-inelastic eγ scattering",

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 hadronic component of the photon.",

author = "C. Peterson and Zerwas, {P. M.} and Walsh, {T. F.}",

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T1 - Assessing QCD in deep-inelastic eγ scattering

AU - Peterson, C.

AU - Zerwas, P. M.

AU - Walsh, T. F.

PY - 1983/12/19

Y1 - 1983/12/19

N2 - 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.

AB - 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.

U2 - 10.1016/0550-3213(83)90334-6

DO - 10.1016/0550-3213(83)90334-6

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VL - 229

SP - 301

EP - 316

JO - Nuclear Physics, Section B

JF - Nuclear Physics, Section B

IS - 2

ER -

Assessing QCD in deep-inelastic eγ scattering

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