6533b825fe1ef96bd128312a

RESEARCH PRODUCT

Proton-antiproton annihilation into ηηπ-observation of a scalar resonance decaying into ηη

Herbert KochC. FelixU. Meyer-berkhoutZ. JávorfiG. PinterC. A. MeyerA. NobleR. HackmannT. KielS. SpanierL. MontanetB. KämmleC.a. BakerS. Von DombrowskiB. M. BarnettB. M. BarnettR. P. HaddockČ. ZupančičU. WiednerKenneth M. CroweK. BeuchertR. LanduaMichael DoserH. MatthaeyN. WinterF. H. HeinsiusP. SchmidtC. VölckerC. KoloD. JamnikD. EngelhardtH. BossyC. J. BattyMarcel KunzeW. DünnweberA. H. SanjariS. RavndalM. EnglertEberhard KlemptH. P. DietzJ. P. MerloI. AugustinK. KönigsmannR. BossinghamP. BlümD. WaltherB. SchmidB. SchmidU. StrohbuschD.v. BuggA. CooperP. IllingerJ. LüdemannD. UrnerT. CaseC. StraβburgerJames A. BistirlichK. BrauneJ. ZollM. MerkelNigel HesseyNigel HesseyMark J. BurchellPàl HidasC. AmslerP. BirienM. A. FaesslerM. SuffertK. PetersG. FolgerH. KalinowskyR. BeckmannE. Schäfer

subject

PhysicsNuclear and High Energy PhysicsParticle physicsAnnihilationProton010308 nuclear & particles physicsIsoscalarNuclear TheoryScalar (mathematics)Dalitz plot01 natural sciencesResonance (particle physics)Nuclear physicsAntiproton0103 physical sciencesMass spectrum010306 general physics

description

Abstract The results of a measurement of pp annihilation at rest into ηηπ 0 are presented. Assuming a resonance dominated model for the annihilation process an isoscalar J PC =0 ++ resonance decaying into ηη is observed with a mass of 1560±25 MeV/ c 2 and a width of 245±50 MeV/ c 2 .

yearjournalcountryeditionlanguage
1992-09-01Physics Letters B
https://doi.org/10.1016/0370-2693(92)91057-g