Issues in Determining α <inf>s</inf> from Hadronic τ Decay and Electroproduction Data

D. Boito; O. Catà; M. Golterman; M. Jamin; K. Maltman; J. Osborne; S. Peris

doi:10.1016/j.nuclphysbps.2012.02.032

Issues in Determining α <inf>s</inf> from Hadronic τ Decay and Electroproduction Data

D. Boito, O. Catà, M. Golterman, M. Jamin, K. Maltman, J. Osborne, S. Peris

Department of Physics

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

Abstract

We discuss some key issues associated with duality-violating and non-perturbative OPE contributions to the theoretical representations of light quark current-current two-point functions and relevant to precision determinations of α s from hadronic τ decay and electroproduction cross-section data. We demonstrate that analyses with an explicit representation of duality-violating effects are required to bring theoretical errors in such extractions under control, motivating the accompanying paper in these proceedings, which presents the results of such an analysis. © 2012 Elsevier B.V.

Original language	English
Pages (from-to)	153-156
Journal	Nuclear Physics B - Proceedings Supplements
Volume	225-227
DOIs	https://doi.org/10.1016/j.nuclphysbps.2012.02.032
Publication status	Published - 1 Apr 2012

Keywords

α s
τ decay
Duality violation

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title = "Issues in Determining α s from Hadronic τ Decay and Electroproduction Data",

abstract = "We discuss some key issues associated with duality-violating and non-perturbative OPE contributions to the theoretical representations of light quark current-current two-point functions and relevant to precision determinations of α s from hadronic τ decay and electroproduction cross-section data. We demonstrate that analyses with an explicit representation of duality-violating effects are required to bring theoretical errors in such extractions under control, motivating the accompanying paper in these proceedings, which presents the results of such an analysis. {\textcopyright} 2012 Elsevier B.V.",

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AU - Boito, D.

AU - Catà, O.

AU - Golterman, M.

AU - Jamin, M.

AU - Maltman, K.

AU - Osborne, J.

AU - Peris, S.

PY - 2012/4/1

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N2 - We discuss some key issues associated with duality-violating and non-perturbative OPE contributions to the theoretical representations of light quark current-current two-point functions and relevant to precision determinations of α s from hadronic τ decay and electroproduction cross-section data. We demonstrate that analyses with an explicit representation of duality-violating effects are required to bring theoretical errors in such extractions under control, motivating the accompanying paper in these proceedings, which presents the results of such an analysis. © 2012 Elsevier B.V.

AB - We discuss some key issues associated with duality-violating and non-perturbative OPE contributions to the theoretical representations of light quark current-current two-point functions and relevant to precision determinations of α s from hadronic τ decay and electroproduction cross-section data. We demonstrate that analyses with an explicit representation of duality-violating effects are required to bring theoretical errors in such extractions under control, motivating the accompanying paper in these proceedings, which presents the results of such an analysis. © 2012 Elsevier B.V.

KW - α s

KW - τ decay

KW - Duality violation

U2 - 10.1016/j.nuclphysbps.2012.02.032

DO - 10.1016/j.nuclphysbps.2012.02.032

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