Final state interactions in decays of the exotic {pi}{sub 1} meson

Journal Article · Tue Mar 01 04:00:00 EST 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.71.056003· OSTI ID:20706146

Poplawski, Nikodem J; Szczepaniak, Adam P; Londergan, J T ^[1]

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1. Physics Department and Nuclear Theory Center, Indiana University, Bloomington, Indiana 47405 (United States)

We analyze the role of final state interactions (FSI) in decay of the lightest exotic meson, with J{sup PC}=1{sup -+}{pi}{sub 1}. We use the relativistic Lippmann-Schwinger equation for two coupled {pi}b{sub 1} and {pi}{rho} channels. The first one is the predicted dominant decay mode of the {pi}{sub 1}, whereas in the other a narrow {pi}{sub 1}(1600) exotic signal has been reported by the E852 collaboration. The FSI potential is constructed, based on the {omega} meson exchange between the two channels. We find that this process introduces corrections to the {pi}{sub 1} widths of the order of only a few MeV. Therefore, we conclude that a substantial {pi}{rho} mode cannot be generated through level mixing.

• OSTI ID: 20706146
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 5 Vol. 71; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSON-EXCHANGE MODELS
CORRECTIONS
FINAL-STATE INTERACTIONS
LIPPMANN-SCHWINGER EQUATION
MEV RANGE
OMEGA-782 MESONS
PARTICLE DECAY
PARTICLE WIDTHS
PIONS
POTENTIALS
RELATIVISTIC RANGE
RHO-770 MESONS