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Titolo:
VIOLATION OF THE BJORKEN SUM-RULE AND SYSTEM OF EQUATIONS IN RECENT NUCLEON SPIN MEASUREMENTS
Autore:
RATCLIFFE PG;
Indirizzi:
IST NAZL FIS NUCL,VIA CELORIA 16 I-20133 MILAN ITALY
Titolo Testata:
Nuovo cimento della Società Italiana di Fisica. A. Nuclei, particles and fields
fascicolo: 10, volume: 107, anno: 1994,
pagine: 2211 - 2220
SICI:
1124-1861(1994)107:10<2211:VOTBSA>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
DEEP-INELASTIC-SCATTERING; STRANGENESS CONTENT; POLARIZED NUCLEONS; PROTON; ELECTROPRODUCTION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
28
Recensione:
Indirizzi per estratti:
Citazione:
P.G. Ratcliffe, "VIOLATION OF THE BJORKEN SUM-RULE AND SYSTEM OF EQUATIONS IN RECENT NUCLEON SPIN MEASUREMENTS", Nuovo cimento della Società Italiana di Fisica. A. Nuclei, particles and fields, 107(10), 1994, pp. 2211-2220

Abstract

We discuss the status of the Bjorken sum rule in the light of the recent data on the spin structure functions of i) the deuteron obtained by the SMC group at CERN and ii) the neutron by the E142 group at SLAG. Combining the new data with that already obtained for the proton by the EMC group and earlier SLAC/YALE collaborations, and also with stringent bounds obtained on the strange-quark polarisation, we deduce thatthe Bjorken system of equations is violated at worse than a 2 sigma level. We also show that arguments based on possible higher-twist contributions are unable to account for this discrepancy. In conclusion, anexplanation in terms of non-perturbative renormalisation of the relevant Wilson coefficients is presented.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 12/07/20 alle ore 00:53:59