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 originale | Inglese |
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pagine (da-a) | 97-100 |
Numero di pagine | 4 |
Rivista | European Physical Journal C |
Volume | 55 |
Numero di pubblicazione | 1 |
DOI | |
Stato di pubblicazione | Pubblicato - mar 1992 |
Pubblicato esternamente | Sì |