Gottfried and Bjorken sum rules: The role of vector diquarks

M. Anselmino, V. Barone, F. Caruso, E. Predazzi

Risultato della ricerca: Contributo su rivistaArticolo in rivistapeer review

Abstract

A quark-diquark model of the nucleon is considered and the value of the Gottfried sum rule SG, recently measured by the NMC group and found to differ considerably from the quark parton model expectation, SG=1/3, is computed allowing for both elastic and inelastic contributions from the diquarks. This approach fails to reproduce the data, unless vector diquark contributions persist at very large Q2 values, contrary to the usual assumptions. The Bjorken sum rule and SU(6) violations due to the quark-diquark structure of the nucleon are also briefly discussed.

Lingua originaleInglese
pagine (da-a)97-100
Numero di pagine4
RivistaEuropean Physical Journal C
Volume55
Numero di pubblicazione1
DOI
Stato di pubblicazionePubblicato - mar 1992
Pubblicato esternamente

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