Published December 1989 | Version v1
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Radiative decay of J/Ψ into η(1430) and nearby states

Creators

  • 1. Paris-11 Univ., 91 - Orsay (France). Lab. de l'Accelerateur Lineaire
  • 2. Clermont-Ferrand-2 Univ., 63 - Aubiere (France). Lab. de Physique Corpusculaire
  • 3. Istituto Nazionale di Fisica Nucleare, Frascati (Italy). Lab. Nazionale di Frascati
  • 4. Padua Univ. (Italy). Ist. di Fisica
  • 5. Istituto Nazionale di Fisica, Padua (Italy)

Description

Radiative decays of J/Ψ into K+K- π0, Ks0 K±π-+, ηπ+π- and ργ have been studied in the η(1430) mass range from the 8.6 million J/Ψ's produced in the DM2 experiment at the DCI storage ring. The η(1430) is observed in the Ks0 K± π-+ and K+ K- π0 channels with substantial KK star (892) dynamics. Moreover an important a0 (980)π contribution could be present. A three-body decay angular analysis supports a JP = O- assignment. The η(1430) is not observed in the ηππ channel which shows a peak in the f1(1285)/η(1275) mass range and a new state at 1398 MeV/c2, ≅ 50 MeV/c2 wide. An a0(980)π intermediate state contribution is present at least in the latter state. Finally the low statistics ργ final state does not give evidence of η(1430) production

Availability note (English)

MF available from INIS under the Report Number.

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Additional details

Publishing Information

Imprint Pagination
25 p.
Report number
LAL--88-59

INIS

Country of Publication
France
Country of Input or Organization
France
INIS RN
22011283
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
DCI ORSAY STORAGE RING; ELECTRON-POSITRON INTERACTIONS; J PSI-3097 MESONS; KAON DETECTION; PION DETECTION; PSEUDOSCALAR MESONS; RADIATIVE DECAY; THREE-BODY PROBLEM
Descriptors DEC
BOSONS; CHARMONIUM; DECAY; DETECTION; ELEMENTARY PARTICLES; HADRONS; INTERACTIONS; LEPTON-LEPTON INTERACTIONS; MANY-BODY PROBLEM; MESONS; PARTICLE DECAY; PARTICLE INTERACTIONS; QUARKONIUM; RADIATION DETECTION; STORAGE RINGS; VECTOR MESONS