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Title: Puzzles in quarkonium hadronic transitions with two pion emission

The anomalously large rates of some hadronic transitions from quarkonium are studied using QCD multipole expansion (QCDME) in the framework of a constituent quark model which has been successful in describing hadronic phenomenology. The hybrid intermediate states needed in the QCDME method are calculated in a natural extension of our constituent quark model based on the Quark Confining String (QCS) scheme. Some of the anomalies are explained due to the presence of an hybrid state with a mass near the mass of the decaying resonance whereas other are justified by the presence of molecular components in the wave function. Some unexpected results are pointed out.
Authors:
; ;  [1] ;  [2]
  1. Grupo de Física Nuclear and IUFFyM, Universidad de Salamanca, E-37008 Salamanca (Spain)
  2. CERN, CH-1211 Geneva (Switzerland)
Publication Date:
OSTI Identifier:
22499058
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1701; Journal Issue: 1; Conference: 11. conference on quark confinement and hadron spectrum, Saint Petersburg (Russian Federation), 8-12 Sep 2014; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; DECAY; EMISSION; EXPANSION; INTERMEDIATE STATE; MASS; PIONS; QUANTUM CHROMODYNAMICS; QUARKONIUM; QUARKS; RESONANCE; WAVE FUNCTIONS