Dokumentenart: | Artikel | ||||
---|---|---|---|---|---|
Titel eines Journals oder einer Zeitschrift: | Physics Letters B | ||||
Verlag: | ELSEVIER SCIENCE BV | ||||
Ort der Veröffentlichung: | AMSTERDAM | ||||
Band: | 666 | ||||
Nummer des Zeitschriftenheftes oder des Kapitels: | 5 | ||||
Seitenbereich: | S. 446-450 | ||||
Datum: | 2008 | ||||
Institutionen: | Physik > Institut für Theoretische Physik > Lehrstuhl Professor Schäfer > Arbeitsgruppe Andreas Schäfer | ||||
Identifikationsnummer: |
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Stichwörter / Keywords: | ELECTRON STORAGE-RING; OPPOSITE-SIGN DIMUONS; ORDER QCD ANALYSIS; LEADING-ORDER; NEUTRINO; HERA; BREAKING; EVENTS; PROTON; | ||||
Dewey-Dezimal-Klassifikation: | 500 Naturwissenschaften und Mathematik > 530 Physik | ||||
Status: | Veröffentlicht | ||||
Begutachtet: | Ja, diese Version wurde begutachtet | ||||
An der Universität Regensburg entstanden: | Ja | ||||
Dokumenten-ID: | 67841 |
Zusammenfassung
The momentum and helicity density distributions of the strange quark sea in the nucleon are obtained in leading order from charged-kaon production in deep-inelastic scattering on the deuteron. The distributions are extracted from spin-averaged K+/- multiplicities, and from K+/- and inclusive double-spin asymmetries for scattering of polarized positrons by a polarized deuterium target. The shape ...
Zusammenfassung
The momentum and helicity density distributions of the strange quark sea in the nucleon are obtained in leading order from charged-kaon production in deep-inelastic scattering on the deuteron. The distributions are extracted from spin-averaged K+/- multiplicities, and from K+/- and inclusive double-spin asymmetries for scattering of polarized positrons by a polarized deuterium target. The shape of the momentum distribution is softer than that of the average of the a and a quarks. In the region of measurement 0.02 < x < 0.6 and Q(2) > 1.0 GeV2, the helicity distribution is zero within experimental uncertainties. (C) 2008 Elsevier B.V. All rights reserved.
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