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Title: HADRON05 Summary: Heavy Quark Hadrons and Theory

Abstract

This HADRON05 summary covers the topics of (1) mesons containing heavy quarks, and (2) theory. The new material discussed here is taken mainly from plenary presentations. We specifically emphasize new or recent results in spectroscopy that are likely to appear in future editions of the PDG. An exception is made for the pentaquark, which was withdrawn at this meeting. We undoubtedly have something important to (re)learn about multiquarks from the pentaquark saga, and this merits a phrase in Portuguese. The three general areas we consider are: I. QQ-bar spectroscopy, II. Qq-bar spectroscopy, and III. lessons from the pentaquark. Finally, in Section IIIb. we conclude with 'Our moment of Zen'.

Authors:
 [1];  [2]
  1. Physics Division, ORNL (United States)
  2. (United States)
Publication Date:
OSTI Identifier:
20798165
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 814; Journal Issue: 1; Conference: 11. international conference on hadron spectroscopy, Rio de Janeiro (Brazil), 21-26 Aug 2005; Other Information: DOI: 10.1063/1.2176573; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; B QUARKS; C QUARKS; MESON SPECTROSCOPY; MESONS; QUARK MODEL; T QUARKS

Citation Formats

Barnes, T., and Department of Physics and Astronomy, University of Tennessee. HADRON05 Summary: Heavy Quark Hadrons and Theory. United States: N. p., 2006. Web. doi:10.1063/1.2176573.
Barnes, T., & Department of Physics and Astronomy, University of Tennessee. HADRON05 Summary: Heavy Quark Hadrons and Theory. United States. doi:10.1063/1.2176573.
Barnes, T., and Department of Physics and Astronomy, University of Tennessee. Sat . "HADRON05 Summary: Heavy Quark Hadrons and Theory". United States. doi:10.1063/1.2176573.
@article{osti_20798165,
title = {HADRON05 Summary: Heavy Quark Hadrons and Theory},
author = {Barnes, T. and Department of Physics and Astronomy, University of Tennessee},
abstractNote = {This HADRON05 summary covers the topics of (1) mesons containing heavy quarks, and (2) theory. The new material discussed here is taken mainly from plenary presentations. We specifically emphasize new or recent results in spectroscopy that are likely to appear in future editions of the PDG. An exception is made for the pentaquark, which was withdrawn at this meeting. We undoubtedly have something important to (re)learn about multiquarks from the pentaquark saga, and this merits a phrase in Portuguese. The three general areas we consider are: I. QQ-bar spectroscopy, II. Qq-bar spectroscopy, and III. lessons from the pentaquark. Finally, in Section IIIb. we conclude with 'Our moment of Zen'.},
doi = {10.1063/1.2176573},
journal = {AIP Conference Proceedings},
number = 1,
volume = 814,
place = {United States},
year = {Sat Feb 11 00:00:00 EST 2006},
month = {Sat Feb 11 00:00:00 EST 2006}
}
  • We discuss the application of the tensor formalism of HQET to the strong decays of heavy hadrons. We treat both meson and baryon decays, and note that all of our results are in agreement with the {open_quotes}spin-counting{close_quotes} arguments of Isgur and Wise. We briefly discuss the possible extension of the formalism to include 1/m corrections. {copyright} {ital 1998} {ital The American Physical Society}
  • The application of the tensor formalism of the heavy quark effective theory (HQET) at leading order to strong decays of heavy hadrons is presented. Comparisons between experimental and theoretical predictions of ratios of decay rated for B mesons, D mesons and kaons are given. The application of HQET to strange mesons presents some encouraging results. The spin-flavor symmetry is used to predict some decay rates that have not yet been measured.
  • The application of the tensor formalism of the heavy quark effective theory (HQET) at leading order to strong decays of heavy hadrons is presented. Comparisons between experimental and theoretical predictions of ratios of decay rates for B mesons, D mesons and kaons are given. The application of HQET to strange mesons presents some encouraging results. The spin-flavor symmetry is used to predict some decay rates that have not yet been measured. (c) 2000 The American Physical Society.
  • An effective Lagrangian that describes the low-momentum interactions of mesons containing a heavy quark with the pseudo Goldstone bosons {pi}, {ital K}, and {eta} is constructed. It is invariant under both heavy-quark spin symmetry and chiral SU(3){sub {ital L}}{times}SU(3){sub {ital R}} symmetry. Implications for semileptonic {ital B} and {ital D} decays are discussed.
  • Analysis of the contribution of instantons to the equation of state of a quark plasma leads to a conclusion concerning the existence of the plasma -- hadron gas phase transition of the first kind. Comparison of calculations with data on neutron star masses excludes the existence of multi-baryon hadrons composed of light quarks.