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The U(1)A Anomaly and QCD Phenomenology

Graham Shore

Lecture Notes in Physics, Volume: 737, Pages: 235 - 288

Swansea University Author: Graham Shore

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DOI (Published version): 10.1007/978-3-540-74233-3_12

Abstract

The role of the U(1)A anomaly in QCD phenomenology is reviewed, focus- ing on the relation between quark dynamics and gluon topology. Topics covered include a generalisation of the Witten-Veneziano formula for the mass of the η′, the determina- tion of pseudoscalar meson decay constants, radiative p...

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Published in: Lecture Notes in Physics
Published: Springer-Verlag 2007
Online Access: http://arxiv.org/abs/hep-ph/0701171
URI: https://cronfa.swan.ac.uk/Record/cronfa17511
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spelling 2014-03-24T13:57:08.3409372 v2 17511 2014-03-21 The U(1)A Anomaly and QCD Phenomenology 28a24f55687c82d6f3ee378ead3cf234 Graham Shore Graham Shore true false 2014-03-21 FGSEN The role of the U(1)A anomaly in QCD phenomenology is reviewed, focus- ing on the relation between quark dynamics and gluon topology. Topics covered include a generalisation of the Witten-Veneziano formula for the mass of the η′, the determina- tion of pseudoscalar meson decay constants, radiative pseudoscalar decays and the U(1)A Goldberger-Treiman relation. Sum rules are derived for the proton and photon structure functions g1p and g1γ measured in polarised deep-inelastic scattering. The first moment sum rule for g1p (the ‘proton spin’ problem) is confronted with new data from COMPASS and HERMES on the deuteron structure function and shown to be quantitatively explained in terms of topological charge screening. Proposals for experiments on semi-inclusive DIS and polarised two-photon physics at future ep and high-luminosity e+e− colliders are discussed. Book chapter Lecture Notes in Physics 737 235 288 Springer-Verlag 21 1 2007 2007-01-21 10.1007/978-3-540-74233-3_12 http://arxiv.org/abs/hep-ph/0701171 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University 2014-03-24T13:57:08.3409372 2014-03-21T10:09:58.9644430 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Graham Shore 1
title The U(1)A Anomaly and QCD Phenomenology
spellingShingle The U(1)A Anomaly and QCD Phenomenology
Graham Shore
title_short The U(1)A Anomaly and QCD Phenomenology
title_full The U(1)A Anomaly and QCD Phenomenology
title_fullStr The U(1)A Anomaly and QCD Phenomenology
title_full_unstemmed The U(1)A Anomaly and QCD Phenomenology
title_sort The U(1)A Anomaly and QCD Phenomenology
author_id_str_mv 28a24f55687c82d6f3ee378ead3cf234
author_id_fullname_str_mv 28a24f55687c82d6f3ee378ead3cf234_***_Graham Shore
author Graham Shore
author2 Graham Shore
format Book chapter
container_title Lecture Notes in Physics
container_volume 737
container_start_page 235
publishDate 2007
institution Swansea University
doi_str_mv 10.1007/978-3-540-74233-3_12
publisher Springer-Verlag
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics
url http://arxiv.org/abs/hep-ph/0701171
document_store_str 0
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description The role of the U(1)A anomaly in QCD phenomenology is reviewed, focus- ing on the relation between quark dynamics and gluon topology. Topics covered include a generalisation of the Witten-Veneziano formula for the mass of the η′, the determina- tion of pseudoscalar meson decay constants, radiative pseudoscalar decays and the U(1)A Goldberger-Treiman relation. Sum rules are derived for the proton and photon structure functions g1p and g1γ measured in polarised deep-inelastic scattering. The first moment sum rule for g1p (the ‘proton spin’ problem) is confronted with new data from COMPASS and HERMES on the deuteron structure function and shown to be quantitatively explained in terms of topological charge screening. Proposals for experiments on semi-inclusive DIS and polarised two-photon physics at future ep and high-luminosity e+e− colliders are discussed.
published_date 2007-01-21T03:20:14Z
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