@article{c70586a688f24d55af4a1fee36cf9e5d,
title = "Instanton effects on light-quark spectroscopy",
abstract = "We investigate the effects of small instatons on mass levels of hadrons containing massless u and d quarks. The calculations are carried out within the framework of the MIT bag model. The result is a small decrease of the N and Λ masses and a strong increase of the η and decrease of the π masses. The various mass shifts are related by group-theoretic coefficients which we explain and calculate. We interpret the strong binding that we find for the pion as the term which turns that bag state into a Nambu-Goldstone boson.",
author = "D. Horn and S. Yankielowicz",
note = "Funding Information: We will carry out our calculations within the frame-work of the MIT bag model \[5\].T his model fits a considerable number of properties of the light hadrons with a small number of terms which are motivated by QCD considerations. The bag itself is regarded as a realization of the confinement mechanism \[4\].S ince the instanton sizes that we consider are much smaller 1 On leave of absence from Tel-Aviv University, Israel. 2 Research supported in part by National Science Foundation Grant No. NSF-PHY77-20612 and Department of Energy Grant No. EY-76-S-02-2220. 3 Research supported in part by NSF Grant No. PHY77-22336.",
year = "1978",
month = jun,
day = "5",
doi = "10.1016/0370-2693(78)90803-1",
language = "אנגלית",
volume = "76",
pages = "343--346",
journal = "Physics Letters B",
issn = "0370-2693",
publisher = "Elsevier B.V.",
number = "3",
}