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Spin effects in two-body charmonium decays

Abstract

Several exclusive charmonium decays are considered in the parton quark perturbative QCD framework. Many of these decays are forbidden by the helicity conservation of massless quarks which couple to gluons; however, they are experimentally observed. After reviewing some of these cases, possible non perturbative corrections or alternative decay mechanisms are considered and discussed; the role of spin data in discriminating between different models can, once more, be crucial. (author). 27 refs.
Authors:
Anselmino, M; [1]  Caruso, F; [2]  Murgia, F [3] 
  1. Turin Univ. (Italy). Ist. di Fisica Teorica
  2. Centro Brasileiro de Pesquisas Fisicas (CBPF), Rio de Janeiro, RJ (Brazil)
  3. Istituto Nazionale di Fisica Nucleare, Cagliari (Italy)
Publication Date:
Dec 31, 1993
Product Type:
Conference
Report Number:
CONF-9201107-
Reference Number:
SCA: 662350; PA: AIX-26:061274; EDB-95:132792; SN: 95001462676
Resource Relation:
Conference: Adriatico research conference on polarization dynamics in nuclear and particle physics, Trieste (Italy), 7-10 Jan 1992; Other Information: PBD: 1993; Related Information: Is Part Of Polarization dynamics in nuclear and particle physics. Proceedings of the 2nd Adriatico research conference; Barut, A.O. [ed.] [Colorado Univ., Boulder, CO (United States)]; Paver, N. [ed.] [Trieste Univ. (Italy)]; Penzo, A. [ed.] [Istituto Nazionale di Fisica Nucleare, Trieste (Italy)]; Raczka, R. [ed.] [Soltan Inst. for Nuclear Studies, Otwock-Swierk (Poland)]; PB: 444 p.
Subject:
66 PHYSICS; CHARMONIUM; HADRONIC PARTICLE DECAY; ETA C-2980 MESONS; EXCLUSIVE INTERACTIONS; J PSI-3097 MESONS; PARTON MODEL; PERTURBATION THEORY; QUANTUM CHROMODYNAMICS; SPIN ORIENTATION
OSTI ID:
101475
Research Organizations:
International Centre for Theoretical Physics (ICTP), Trieste (Italy)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Other: ISBN 981-02-1423-5; TRN: XA9539770061274
Submitting Site:
INIS
Size:
pp. 293-303
Announcement Date:
Jan 16, 2004

Citation Formats

Anselmino, M, Caruso, F, and Murgia, F. Spin effects in two-body charmonium decays. IAEA: N. p., 1993. Web.
Anselmino, M, Caruso, F, & Murgia, F. Spin effects in two-body charmonium decays. IAEA.
Anselmino, M, Caruso, F, and Murgia, F. 1993. "Spin effects in two-body charmonium decays." IAEA.
@misc{etde_101475,
title = {Spin effects in two-body charmonium decays}
author = {Anselmino, M, Caruso, F, and Murgia, F}
abstractNote = {Several exclusive charmonium decays are considered in the parton quark perturbative QCD framework. Many of these decays are forbidden by the helicity conservation of massless quarks which couple to gluons; however, they are experimentally observed. After reviewing some of these cases, possible non perturbative corrections or alternative decay mechanisms are considered and discussed; the role of spin data in discriminating between different models can, once more, be crucial. (author). 27 refs.}
place = {IAEA}
year = {1993}
month = {Dec}
}