Current quarks, constituent quarks, and symmetries of resonance decays

Technical Report · Wed Apr 18 04:00:00 EST 1973

DOI:https://doi.org/10.2172/4344264· OSTI ID:4344264

Hey, A J.G.; Rosner, J L; Weyers, J

The transformation between ''current'' quarks and ''constituent'' quarks recently suggested by Melosh is examined with respect to its predictions for pionic decays of resonances. It implies the use of SU(6)/sub W/ for classifying particle states but not for describing decay processes. lnstead, pion emission proceeds via DELTA L/sub z/ = 0, plus or minus 1, where L is the internal (''quark'') orbital angular momentum. This decay symmetry is called SU(6)/sub W/ (DELTA L/sub z/ = 0, plus or minus 1). It is proven equivalent for any decay A yields B + pi (where A, B are arbitrary qq-bar or qqq hadrons) to the /sup 3/P/sub 0/ quark-pair creation model for such decays, as formulated by Micu, Colglazier, Petersen and Rosner. The roles of final orbital angular momenta l and of SU(3) x SU(3) subgroups of SU(6)w are also discussed, and some new predictions are made for decays of meson resonances below 1700 MeV. (auth)

• Research Organization: European Organization for Nuclear Research, Geneva (Switzerland); Minnesota Univ., Minneapolis (USA). School of Physics and Astronomy
• NSA Number: NSA-29-022680
• OSTI ID: 4344264
• Report Number(s): COO--1764-197; Ref.TH.1659-CERN
• Country of Publication: United States
• Language: English

Related Subjects

*BARYON RESONANCES-- DECAY
*MESON RESONANCES-- DECAY
*QUARK MODEL-- DECAY
DECAY AMPLITUDES
EMISSION
N64330* --Physics (High Energy)--Particle Invariance Principles & Symmetry--Applications (Strong)
ORBITAL ANGULAR MOMENTUM
PAIR PRODUCTION
PIONS
QUARKS
SU-3 GROUPS
SU-6 GROUPS
SYMMETRY QUARK MODEL