6533b833fe1ef96bd129caac
RESEARCH PRODUCT
Antiproton-proton annihilation at rest into KKπ0π0
A. AbeleJ. AdomeitC. AmslerC.a. BakerB.m. BarnettC.j. BattyM. BenayounA. BerdozK. BeuchertS. BischoffP. BlümK. BrauneD.v. BuggT. CaseO. CramerV. CredéK.m. CroweT. DegenerN. DjaoshviliS.v. DombrowskiM. DoserW. DünnweberA. EhmannsD. EngelhardtM.a. FaesslerC. FelixP. GiarrittaR.p. HaddockF.h. HeinsiusM. HeinzelmannM. HerzN.p. HesseyP. HidasC. HoddC. HoltzhaußenD. JamnikH. KalinowskyB. KämmleP. KammelJ. KisielE. KlemptH. KochC. KoloM. KunzeU. KurillaM. LakataR. LanduaH. MatthäyR. MccradyJ. MeierC.a. MeyerL. MontanetR. OuaredF. Ould-saadaK. PetersB. PickC. PietraC.n. PinderM. RatajcakC. RegenfusJ. ReißmannS. ResagW. RoethelP. SchmidtI. ScottR. SeibertS. SpanierH. StöckC. StraßburgerU. StrohbuschM. SuffertU. ThomaM. TischhäuserC. VölckerS. WallisD. WaltherU. WiednerB.s. ZouČ. Zupančičsubject
PhysicsNuclear and High Energy PhysicsAnnihilationProton010308 nuclear & particles physicsBranching fractionPartial wave analysisDalitz plot01 natural sciencesCrystalNuclear physicsAngular distributionAntiproton0103 physical sciencesAtomic physics010306 general physicsdescription
Abstract The annihilation channel p p →K + K − π 0 in liquid hydrogen at rest has been studied with the Crystal Barrel detector at LEAR. The measured branching ratio is: BR ( p p → K + K − π 0 )=(2.37±0.15)×10 −3 . A partial wave analysis shows that this reaction is dominated by the π (K K ) S , K K ∗ (892) and π φ (1020) intermediate states. Weak signals are observed for π a 2 (1320), π f 2 (1270), π f 2 ′(1525) and K(Kπ) S . A satisfactory description of the Dalitz plot requires the introduction of π (K K ) P intermediate states with at least one pole.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1997-12-01 | Physics Letters B |