Search for axion-like particles in the SLAC beam dump

Thesis/Dissertation · Thu Jan 01 04:00:00 EST 1987

OSTI ID:5177753

Lu, B

A search for axion-like particles was made at the Stanford Linear Accelerator Center (SLAC) by dumping 30 Coulombs of 20 GeV electrons into a beam absorption facility. After 179 meters of earth shielding the in-flight decay of the particle into two photons or an electron-positron pair, in a decay volume of 204 meters in length, was searched for with a fine-grained electromagnetic calorimeter. No positive signals were identified. Experimental limits were obtained for axions of mass up to {approximately} 200 MeV/c{sup 2}, and photinos of mass up to {approximately} 65 MeV/c{sup 2}.

• Research Organization: Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (USA)
• OSTI ID: 5177753
• Country of Publication: United States
• Language: English

Related Subjects

645101* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Electromagnetic Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
AXIONS
BOSONS
CHARGED-PARTICLE REACTIONS
DATA
ELECTRON REACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
EXPERIMENTAL DATA
GEV RANGE
GEV RANGE 10-100
GOLDSTONE BOSONS
INFORMATION
LEPTON REACTIONS
LIMITING VALUES
LINEAR ACCELERATORS
MASS
NUCLEAR REACTIONS
NUMERICAL DATA
PARTICLE PRODUCTION
POSTULATED PARTICLES
REST MASS
STANFORD 20-GEV LINAC