Improving the Weizsäcker-Williams approximation in electron-proton collisions

We critically examine the validity of the Weizs\"acker-Williams approximation in electron-hadron collisions. We show that in its commonly used form it can lead to large errors, and we show how to improve it in order to get accurate results. In particular, we present an improved form that is val...

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Detalles Bibliográficos
Autores principales: Frixione, Stefano, Mangano, Michelangelo L., Nason, Paolo, Ridolfi, Giovanni
Lenguaje:eng
Publicado: 1993
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/0370-2693(93)90823-Z
http://cds.cern.ch/record/254076
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author Frixione, Stefano
Mangano, Michelangelo L.
Nason, Paolo
Ridolfi, Giovanni
author_facet Frixione, Stefano
Mangano, Michelangelo L.
Nason, Paolo
Ridolfi, Giovanni
author_sort Frixione, Stefano
collection CERN
description We critically examine the validity of the Weizs\"acker-Williams approximation in electron-hadron collisions. We show that in its commonly used form it can lead to large errors, and we show how to improve it in order to get accurate results. In particular, we present an improved form that is valid beyond the leading logarithmic approximation in the case when a small-angle cut is applied to the scattered electron. Furthermore we include comparisons of the approximate expressions with the exact electroproduction calculation in the case of heavy-quark production.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1993
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spelling cern-2540762020-07-23T02:48:14Zdoi:10.1016/0370-2693(93)90823-Zhttp://cds.cern.ch/record/254076engFrixione, StefanoMangano, Michelangelo L.Nason, PaoloRidolfi, GiovanniImproving the Weizsäcker-Williams approximation in electron-proton collisionsParticle Physics - PhenomenologyWe critically examine the validity of the Weizs\"acker-Williams approximation in electron-hadron collisions. We show that in its commonly used form it can lead to large errors, and we show how to improve it in order to get accurate results. In particular, we present an improved form that is valid beyond the leading logarithmic approximation in the case when a small-angle cut is applied to the scattered electron. Furthermore we include comparisons of the approximate expressions with the exact electroproduction calculation in the case of heavy-quark production.We critically examine the validity of the Weizs\"acker-Williams approximation in electron-hadron collisions. We show that in its commonly used form it can lead to large errors, and we show how to improve it in order to get accurate results. In particular, we present an improved form that is valid beyond the leading logarithmic approximation in the case when a small-angle cut is applied to the scattered electron. Furthermore we include comparisons of the approximate expressions with the exact electroproduction calculation in the case of heavy-quark production.We critically examine the validity of the Weizsäcker-Williams approximation in electron-hadron collisions. We show that in its commonly used form it can lead to large errors, and we show how to improve it in order to get accurate results. In particular, we present an improved form that is valid beyond the leading logarithmic approximation in the case when a small-angle cut is applied to the scattered electron. Furthermore we include comparisons of the approximate expressions with the exact electroproduction calculation in the case of heavy-quark production.hep-ph/9310350CERN-TH-7032-93GEF-TH-18-93CERN-TH-7032-93oai:cds.cern.ch:2540761993
spellingShingle Particle Physics - Phenomenology
Frixione, Stefano
Mangano, Michelangelo L.
Nason, Paolo
Ridolfi, Giovanni
Improving the Weizsäcker-Williams approximation in electron-proton collisions
title Improving the Weizsäcker-Williams approximation in electron-proton collisions
title_full Improving the Weizsäcker-Williams approximation in electron-proton collisions
title_fullStr Improving the Weizsäcker-Williams approximation in electron-proton collisions
title_full_unstemmed Improving the Weizsäcker-Williams approximation in electron-proton collisions
title_short Improving the Weizsäcker-Williams approximation in electron-proton collisions
title_sort improving the weizsäcker-williams approximation in electron-proton collisions
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/0370-2693(93)90823-Z
http://cds.cern.ch/record/254076
work_keys_str_mv AT frixionestefano improvingtheweizsackerwilliamsapproximationinelectronprotoncollisions
AT manganomichelangelol improvingtheweizsackerwilliamsapproximationinelectronprotoncollisions
AT nasonpaolo improvingtheweizsackerwilliamsapproximationinelectronprotoncollisions
AT ridolfigiovanni improvingtheweizsackerwilliamsapproximationinelectronprotoncollisions

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