SEARCH FOR A NARROW RESONANCE IN THE PP-PI-SYSTEM

Authors
VOROBEV LS GRISHUK YG EFREMENKO YV KOSOV MV KULESHOV SV LEKSIN GA PIVNYUK NA SMIRNITSKII AV FEDOROV VB SHVARTSMAN BB SHUVALOV SM SHCHEPKIN MG
Citation
Ls. Vorobev et al., SEARCH FOR A NARROW RESONANCE IN THE PP-PI-SYSTEM, JETP letters, 59(2), 1994, pp. 77-80
Citations number
17
Categorie Soggetti
Physics
Journal title
JETP letters → ACNP
ISSN journal
00213640
Volume
59
Issue
2
Year of publication
1994
Pages
77 - 80
Database
ISI
SICI code
0021-3640(1994)59:2<77:SFANRI>2.0.ZU;2-M
Abstract
Preliminary results of the analysis of the pppi- system produced in th e reaction pp-->pppi-pi+ reveal a resonance with a mass M almost-equal -to 2.06 GeV and a width < 15 MeV. The mass spectrum of the system ppp i-, which can have any quantum numbers, including those forbidden in t he np system, has been investigated for the first time. The observed r esonance in the pppi- mass spectrum is in agreement with the quark mod els. and it confirms the recently proposed explanation of the peculiar features in the low-energy pionic double charge exchange on nuclei.