6533b828fe1ef96bd1287957
RESEARCH PRODUCT
Branching ratios for p annihilation at rest into two-body final states
F. H. HeinsiusF. H. HeinsiusP. BlümD.v. BuggU. StrohbuschC. StraßburgerK. WittmackR. OuaredU. KurillaD. WaltherD. WaltherD. JamnikD. JamnikJ.s. SuhD. EngelhardtA. AbeleC.j. BattyM. A. FaesslerC. VölckerR.p. HaddockM. HerzP. GiarrittaHerbert KochClaude AmslerJ. AdomeitI. UmanMichael DoserMarcel KunzeH. StöckA. HerbstrithC. HoltzhaußenC. A. MeyerK. PetersW. DünnweberR. MccradyM. LakataC. RegenfusJ. KisielJ. KisielU. WiednerU. WiednerM. SuffertT. CaseH. MatthäyB. PickP. KammelK. BrauneM. HeinzelmannC.a. BakerS. Wallis-plachnerL. MontanetB.m. BarnettB.m. BarnettM. BenayounKenneth M. CroweB.s. ZouH. KalinowskyJ. MeierS. SpanierU. ThomaC. HoddS. BischoffEberhard KlemptPàl HidasT. DegenerW. RoethelM. TischhäuserM. RatajczakN.p. HesseyR. Landuasubject
PhysicsNuclear and High Energy PhysicsAnnihilationHydrogenchemistryBranching fractionAnalytical chemistrychemistry.chemical_elementAtomic physicsBranching (polymer chemistry)Particle Physics - Experimentdescription
Abstract Measurements of two-body branching ratios for p p annihilations at rest in liquid and gaseous (12 ρ STP ) hydrogen are reported. Channels studied are p p →π 0 π 0 ,π 0 η , K 0 S K 0 L , K + K − . The branching ratio for the π 0 π 0 channel in liquid H 2 is measured to be ( 6.14±0.40)×10 −4 . The results are compared with those from other experiments. The fraction of P-state annihilation for a range of target densities from 0.002 ρ STP to liquid H 2 is determined. Values obtained include 0.11±0.02 in liquid H 2 and 0.48±0.04 in 12 ρ STP H 2 gas.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2001-01-01 | Nuclear Physics A |