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Title: Electroweak higher-order effects and theoretical uncertainties in deep-inelastic neutrino scattering

Abstract

A previous calculation of electroweak O({alpha}) corrections to deep-inelastic neutrino scattering, as e.g. measured by NuTeV and NOMAD, is supplemented by higher-order effects. In detail, we take into account universal two-loop effects from {delta}{alpha} and {delta}{rho} as well as higher-order final-state photon radiation off muons in the structure function approach. Moreover, we make use of the recently released O({alpha})-improved parton distributions MRST2004QED and identify the relevant QED factorization scheme, which is DIS-like. As a technical by-product, we describe slicing and subtraction techniques for an efficient calculation of a new type of real corrections that are induced by the generated photon distribution. A numerical discussion of the higher-order effects suggests that the remaining theoretical uncertainty from unknown electroweak corrections is dominated by nonuniversal two-loop effects and is of the order 0.0003 when translated into a shift in sin{sup 2}{theta}{sub W}=1-M{sub W}{sup 2}/M{sub Z}{sup 2}. The O({alpha}) corrections implicitly included in the parton distributions lead to a shift of about 0.0004.

Authors:
 [1]; ;  [2]
  1. Paul-Scherrer-Institut, Wuerenlingen und Villigen CH-5232 Villigen PSI (Switzerland)
  2. Max-Planck-Institut fuer Physik (Werner-Heisenberg-Institut) D-80805 Munich (Germany)
Publication Date:
OSTI Identifier:
20713808
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 72; Journal Issue: 9; Other Information: DOI: 10.1103/PhysRevD.72.093002; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CORRECTIONS; DEEP INELASTIC SCATTERING; DISTRIBUTION; FACTORIZATION; MUONS; NEUTRINO REACTIONS; PHOTONS; QUANTUM ELECTRODYNAMICS; QUARK MODEL; QUARKS; STRUCTURE FUNCTIONS

Citation Formats

Diener, K.-P.O., Dittmaier, S., and Hollik, W. Electroweak higher-order effects and theoretical uncertainties in deep-inelastic neutrino scattering. United States: N. p., 2005. Web. doi:10.1103/PhysRevD.72.093002.
Diener, K.-P.O., Dittmaier, S., & Hollik, W. Electroweak higher-order effects and theoretical uncertainties in deep-inelastic neutrino scattering. United States. doi:10.1103/PhysRevD.72.093002.
Diener, K.-P.O., Dittmaier, S., and Hollik, W. Tue . "Electroweak higher-order effects and theoretical uncertainties in deep-inelastic neutrino scattering". United States. doi:10.1103/PhysRevD.72.093002.
@article{osti_20713808,
title = {Electroweak higher-order effects and theoretical uncertainties in deep-inelastic neutrino scattering},
author = {Diener, K.-P.O. and Dittmaier, S. and Hollik, W.},
abstractNote = {A previous calculation of electroweak O({alpha}) corrections to deep-inelastic neutrino scattering, as e.g. measured by NuTeV and NOMAD, is supplemented by higher-order effects. In detail, we take into account universal two-loop effects from {delta}{alpha} and {delta}{rho} as well as higher-order final-state photon radiation off muons in the structure function approach. Moreover, we make use of the recently released O({alpha})-improved parton distributions MRST2004QED and identify the relevant QED factorization scheme, which is DIS-like. As a technical by-product, we describe slicing and subtraction techniques for an efficient calculation of a new type of real corrections that are induced by the generated photon distribution. A numerical discussion of the higher-order effects suggests that the remaining theoretical uncertainty from unknown electroweak corrections is dominated by nonuniversal two-loop effects and is of the order 0.0003 when translated into a shift in sin{sup 2}{theta}{sub W}=1-M{sub W}{sup 2}/M{sub Z}{sup 2}. The O({alpha}) corrections implicitly included in the parton distributions lead to a shift of about 0.0004.},
doi = {10.1103/PhysRevD.72.093002},
journal = {Physical Review. D, Particles Fields},
number = 9,
volume = 72,
place = {United States},
year = {Tue Nov 01 00:00:00 EST 2005},
month = {Tue Nov 01 00:00:00 EST 2005}
}