Evidence for a JPC=1 ++I=1 meson at 1640 MeV

From an analysis of p ̄ p→4π 0 at a beam momentum of 1940 MeV/c, we find evidence for a J PC =1 ++ resonance at 1640 ±12( stat)±30( syst) MeV with Γ=300±22±40 MeV; it is observed decaying both to σπ with L=1 and to f 2(1270) π with L=1.

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Bibliographic Details
Published inPhysics letters. B Vol. 449; no. 1; pp. 114 - 121
Main Authors Baker, C.A., Batty, C.J., Blüm, P., Bugg, D.V., Haddock, R.P., Hodd, C., Holtzhaußen, C., Montanet, L., Odoom, D., Pinder, C.N., Scott, I., Zou, B.S.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.03.1999
Subjects
Annihilation
Mesons
Resonances
13.75.Cs
14.20.GK
Mesons
Annihilation
Resonances
14.40
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Summary:From an analysis of p ̄ p→4π 0 at a beam momentum of 1940 MeV/c, we find evidence for a J PC =1 ++ resonance at 1640 ±12( stat)±30( syst) MeV with Γ=300±22±40 MeV; it is observed decaying both to σπ with L=1 and to f 2(1270) π with L=1.
ISSN:0370-2693
1873-2445
DOI:10.1016/S0370-2693(99)00075-1