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dc.contributor.authorFriedmann, Tamar
dc.date.accessioned2016-06-30T21:07:45Z
dc.date.available2016-06-30T21:07:45Z
dc.date.issued2013-02
dc.identifier.issn1434-6044
dc.identifier.issn1434-6052
dc.identifier.urihttp://hdl.handle.net/1721.1/103406
dc.description.abstractWe propose a new schematic model for mesons in which the building blocks are quarks and flavor-antisymmetric diquarks. The outcome is a new classification of the entire meson spectrum into quark–antiquark and diquark–antidiquark states which does not give rise to a radial quantum number: all mesons which have so far been believed to be radially excited are orbitally excited diquark–antidiquark states; similarly, there are no radially excited baryons. Further, mesons that were previously viewed as “exotic” are no longer exotic as they are now naturally integrated into the classification as diquark–antidiquark states. The classification also leads to the introduction of isorons (iso-hadrons), which are analogs of atomic isotopes, and their magic quantum numbers, which are analogs of the magic numbers of the nuclear shell model. The magic quantum numbers of isorons match the quantum numbers expected for low-lying glueballs in lattice QCD. We observe that interquark forces in mesons behave substantially differently from those in baryons: qualitatively, they are color–magnetic in mesons but color–electrostatic in baryons. We comment on potential models and the hydrogen atom. The implications of our results for confinement, asymptotic freedom, and a new set of relations between two fundamental properties of hadrons—their size and their energy—are discussed in our companion paper (Eur. Phys. J. C (2013). doi:10.1140/epjc/110052-013-2299-8).en_US
dc.description.sponsorshipUnited States. Department of Energy (cooperative research agreement DE-FC02-94ER40818 and Grant number DE-FG02-91ER40685)en_US
dc.publisherSpringer-Verlagen_US
dc.relation.isversionofhttp://dx.doi.org/10.1140/epjc/s10052-013-2298-9en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourceSpringer-Verlagen_US
dc.titleNo radial excitations in low energy QCD. I. Diquarks and classification of mesonsen_US
dc.typeArticleen_US
dc.identifier.citationFriedmann, Tamar. “No Radial Excitations in Low Energy QCD. I. Diquarks and Classification of Mesons.” The European Physical Journal C 73.2 (2013): n. pag.en_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Physics
dc.contributor.mitauthorFriedmann, Tamaren_US
dc.relation.journalThe European Physical Journal Cen_US
dc.eprint.versionAuthor's final manuscripten_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dc.date.updated2016-05-23T12:11:01Z
dc.language.rfc3066en
dc.rights.holderSpringer-Verlag Berlin Heidelberg and Società Italiana di Fisica
dspace.orderedauthorsFriedmann, Tamaren_US
dspace.embargo.termsNen
mit.licensePUBLISHER_POLICYen_US


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