Gottfried and Bjorken sum rules: The role of vector diquarks

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

doi:10.1007/BF01558293

Gottfried and Bjorken sum rules: The role of vector diquarks

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

Risultato della ricerca: Contributo su rivista › Articolo in rivista › peer review

Abstract

A quark-diquark model of the nucleon is considered and the value of the Gottfried sum rule S_G, recently measured by the NMC group and found to differ considerably from the quark parton model expectation, S_G=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
pagine (da-a)	97-100
Numero di pagine	4
Rivista	European Physical Journal C
Volume	55
Numero di pubblicazione	1
DOI	https://doi.org/10.1007/BF01558293
Stato di pubblicazione	Pubblicato - mar 1992
Pubblicato esternamente	Sì

Accesso al documento

10.1007/BF01558293

Altri file e collegamenti

Link to publication in Scopus

Cita questo

@article{ceda6617f6b5452e8e5190ad7302a737,

title = "Gottfried and Bjorken sum rules: The role of vector diquarks",

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.",

author = "M. Anselmino and V. Barone and F. Caruso and E. Predazzi",

year = "1992",

month = mar,

doi = "10.1007/BF01558293",

language = "English",

volume = "55",

pages = "97--100",

journal = "European Physical Journal C",

issn = "0170-9739",

publisher = "Springer Nature",

number = "1",

}

TY - JOUR

T1 - Gottfried and Bjorken sum rules

T2 - The role of vector diquarks

AU - Anselmino, M.

AU - Barone, V.

AU - Caruso, F.

AU - Predazzi, E.

PY - 1992/3

Y1 - 1992/3

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/0039593393

U2 - 10.1007/BF01558293

DO - 10.1007/BF01558293

M3 - Article

SN - 0170-9739

VL - 55

SP - 97

EP - 100

JO - European Physical Journal C

JF - European Physical Journal C

IS - 1

ER -

Gottfried and Bjorken sum rules: The role of vector diquarks

Abstract

Accesso al documento

Altri file e collegamenti

Fingerprint

Cita questo