Evidence for exotic meson production in {pi}{sup -}p interactions at 18 GeV/c

Journal Article · Fri May 29 04:00:00 EDT 1998 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.56047· OSTI ID:21185735

Ostrovidov, Alexander ^[1]

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1. Brookhaven National Laboratory (United States)

A general overview of the latest E852 results is presented. The description of the experimental apparatus is given. Data sample of 1.3 billion events collected so far by the experiment is summarized. A J{sup PC}=1{sup -+} exotic state of mass (1370{+-}16{sub -30}{sup +50}) MeV/c{sup 2} and width (385{+-}40{sub -105}{sup +65}) MeV/c{sup 2} is observed in the reaction {pi}{sup -}p{yields}{eta}{pi}{sup -}p. A strong 1{sup -+} signal is present in the {eta}{pi}{sup 0}, {pi}{sup +}{pi}{sup -}{pi}{sup -}, {pi}{sup -}{pi}{sup 0}{pi}{sup 0}, {eta}{sup '}{pi}{sup -} and f{sub 1}(1285){pi}{sup -} final states. In {eta}{eta}, a 0{sup ++} state around 1.5 GeV/c{sup 2} is seen. A brief summary of the preliminary results for the {omega}{pi}{sup -}{pi}{sup 0}, {omega}{pi}{sup 0},{omega}{eta} and {eta}{pi}{sup +}{pi}{sup -} final states is included.

• OSTI ID: 21185735
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 432; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ETA MESONS
F1-1285 MESONS
GEV RANGE
INCLUSIVE INTERACTIONS
MASS SPECTRA
MEV RANGE
OMEGA-782 MESONS
PARTICLE IDENTIFICATION
PARTICLE PRODUCTION
PARTICLE WIDTHS
PION MINUS REACTIONS
PION MINUS-PROTON INTERACTIONS
PIONS MINUS
PIONS NEUTRAL
PIONS PLUS
PROTONS
RESONANCE PARTICLES
REST MASS