DIRAC experiment
E565050
The DIRAC experiment is a high-energy physics project at CERN designed to study pionium (a bound state of a π⁺ and π⁻ meson) to test predictions of low-energy quantum chromodynamics.
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
CERN experiment
ⓘ
nuclear physics experiment ⓘ particle physics experiment ⓘ |
| aimsToDetermine | ππ scattering length combination a₀−a₂ ⓘ |
| collaborationIncludes |
European institutes
ⓘ
Japanese institutes ⓘ Russian institutes ⓘ |
| collaborationType | international collaboration ⓘ |
| country | Switzerland ⓘ |
| dataTakingStarted | 1999 ⓘ |
| detects |
atomic pairs from pionium breakup
ⓘ
π⁺π⁻ pairs ⓘ |
| focusesOn | short-lived pionium states ⓘ |
| fullName | DIRAC (Dimeson Relativistic Atom Complex) NERFINISHED ⓘ |
| hostOrganization | CERN NERFINISHED ⓘ |
| locatedAt | CERN Proton Synchrotron NERFINISHED ⓘ |
| locatedIn | CERN ⓘ |
| locatedInCity | Meyrin NERFINISHED ⓘ |
| locatedNear | Geneva NERFINISHED ⓘ |
| measures |
difference of isospin 0 and 2 ππ scattering lengths
ⓘ
pionium lifetime ⓘ ππ S-wave scattering lengths ⓘ |
| primaryGoal | study of pionium atoms ⓘ |
| produces | precision tests of low-energy QCD ⓘ |
| relatedTo |
chiral symmetry breaking
ⓘ
isospin symmetry breaking ⓘ ππ scattering ⓘ |
| researchField |
hadron physics
ⓘ
meson physics ⓘ strong interaction ⓘ |
| status | completed data taking ⓘ |
| studies |
hadronic atoms
ⓘ
pionium ⓘ π⁺π⁻ atoms ⓘ |
| targetMaterial | thin metal foils ⓘ |
| testsTheory |
chiral perturbation theory
ⓘ
low-energy quantum chromodynamics ⓘ |
| uses |
Cherenkov detectors
NERFINISHED
ⓘ
high-intensity proton beam ⓘ magnetic spectrometer ⓘ thin target ⓘ time-of-flight detectors ⓘ tracking detectors ⓘ |
| usesAccelerator | Proton Synchrotron NERFINISHED ⓘ |
| usesBeamEnergy | 24 GeV/c protons ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.