Chiral corrections in hadron spectroscopy |
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| Affiliation: | 1. Department of Physics and Mathematical Physics and Special Research Center for the Subatomic Structure of Matter, University of Adelaide, SA 5005, Australia;2. Instituto de Fı́sica Teórica, Universidade Estadual Paulista, Rua Pamplona 145, 01405-900 São Paulo, SP, Brazil;1. Department of Pharmacy, Laboratory of Molecular Biology and Immunology, University of Patras, Patras, Greece;2. Department of Optics & Optometry, School of Health and Caring Professions, University of Applied Sciences (T.E.I. of Western Greece), Patras, Greece;3. Department of Biochemistry-Biotechnology, School of Health Sciences, University of Thessaly, Viopolis, Larissa, 41500, Greece;1. Beijing Institute of Space Launch Technology, Beijing 100076, China;2. School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, NSW 2522, Australia;3. School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China;4. School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, China;1. Institut für Theoretische Physik, JLU Giessen, Heinrich-Buff-Ring 16, D-35392, Gießen, Germany;2. Balurghat College, Balurghat, India;3. Aristotle University of Thessaloniki, Thessaloniki, Greece;4. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;5. State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China;1. University of Campinas - UNICAMP, Institute of Physics “Gleb Wataghin”, 13083-859 Campinas, São Paulo, Brazil;2. Dpto. Sistemas Físicos, Químicos y Naturales, Univ. Pablo de Olavide, E-41013 Sevilla, Spain;3. Department of Theoretical Physics and IFIC, University of Valencia and CSIC, E-46100, Valencia, Spain;4. School of Physics, Nanjing University, Nanjing, Jiangsu 210093, China;5. Institute for Nonperturbative Physics, Nanjing University, Nanjing, Jiangsu 210093, China;6. Department of Integrated Sciences and Center for Advanced Studies in Physics, Mathematics and Computation, University of Huelva, E-21071 Huelva, Spain |
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| Abstract: | We show that the implementation of chiral symmetry in recent studies of the hadron spectrum in the context of the constituent quark model is inconsistent with chiral perturbation theory. In particular, we show that the leading nonanalytic (LNA) contributions to the hadron masses are incorrect in such approaches. The failure to implement the correct chiral behaviour of QCD results in incorrect systematics for the corrections to the masses. |
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