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Strange quark asymmetry in the nucleon and the NuTeV anomaly
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- Alwall, Johan (author)
- Uppsala universitet,Institutionen för kärn- och partikelfysik,Högenergifysik,Teoretisk högenergifysik
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- Ingelman, Gunnar (author)
- Uppsala universitet,Institutionen för kärn- och partikelfysik,Högenergifysik,Teoretisk högenergifysik
- (creator_code:org_t)
- 2004
- 2004
- English.
- In: Physical Review D. - 0556-2821. ; 70, s. 111505(R)-
- Journal article (peer-reviewed)
Abstract
Subject headings
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- The NuTeV anomaly of a nonuniversal value of the fundamental parameter sin2thetaW in the electroweak theory has been interpreted as an indication for new physics beyond the standard model. However, the observed quantity depends on a possible asymmetry in the momentum distributions of strange quarks and antiquarks in the nucleon. This asymmetry occurs naturally in a phenomenologically successful physical model for such parton distributions, which reduces the NuTeV result to only about 2 standard deviations from the standard model.
Subject headings
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
Keyword
- Elementary particle physics
- Elementarpartikelfysik
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- ref (subject category)
- art (subject category)
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