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Llanes Estrada, Felipe José and Bicudo, P. and Cardoso, M. and Van Cauteren, T. (2009) Using highly excited baryons to catch the quark mass. EPJ Web of Conferences, 3 . ISSN 2100-014X
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Official URL: http://dx.doi.org/10.1051/epjconf/20100303012
Abstract
Chiral symmetry in QCD can be simultaneously in Wigner and Goldstone modes, depending on the part of the spectrum examined. The transition regime between both, exploiting for example the onset of parity doubling in the high baryon spectrum, can be used to probe the running quark mass in the mid-IR power-law regime. In passing we also argue that three-quark states naturally group into same-flavor quartets, split into two parity doublets, all splittings decreasing high in the spectrum. We propose that a measurement of masses of high-partial wave Delta∗ resonances should be sufficient to unambiguously establish the approximate degeneracy and see the quark mass running. We test these concepts with the first computation of the spectrum of high-J excited baryons in a chiral-invariant quark model
Item Type: | Article |
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Additional Information: | © Owned by the authors, published by EDP Sciences, 2010. |
Uncontrolled Keywords: | Chiral-Symmetry, Effective Restoration, Model, Spectrum, Lattice, Mesons |
Subjects: | Sciences > Physics |
ID Code: | 24097 |
Deposited On: | 15 Jan 2014 14:20 |
Last Modified: | 20 Apr 2018 18:39 |
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