ISOSPIN-BREAKING NUCLEAR-FORCES IN QCD SUM-RULES AND NOLEN-SCHIFFER ANOMALY

Authors
DRUKAREV EG RYSKIN MG
Citation
Eg. Drukarev et Mg. Ryskin, ISOSPIN-BREAKING NUCLEAR-FORCES IN QCD SUM-RULES AND NOLEN-SCHIFFER ANOMALY, Nuclear physics. A, 572(3-4), 1994, pp. 560-574
Citations number
13
Categorie Soggetti
Physics, Nuclear
Journal title
Nuclear physics. A → ACNP
ISSN journal
03759474
Volume
572
Issue
3-4
Year of publication
1994
Pages
560 - 574
Database
ISI
SICI code
0375-9474(1994)572:3-4<560:INIQSA>2.0.ZU;2-T
Abstract
We use QCD sum rules to investigate isospin-breaking effects in nuclea r matter. The isospin-breaking condensate [NM\uuBAR-ddBAR\NM] is shown to play an important role. In a reasonable model the neutron becomes (0.9+/-0.6) MeV more bound than the proton, providing a possible solut ion for the Nolen-Schiffer anomaly. The various contributions to the v alue are analysed. The possible consequences for nucleon-nucleon isosp in-breaking forces are discussed.