Bose-Einstein correlations of pions in e sup + e sup minus annihilation at 29-GeV center-of-mass energy

Thesis/Dissertation · Sun Jan 01 04:00:00 EST 1989

OSTI ID:6098157

Avery, R E

Measurements of two and three particle correlations between sign pions produced in e{sup +}e{sup {minus}} annihilation at 29 GeV center-o mass energy are presented. The analysis is based on data taken during the period 1982-1986 using the TPC/2{gamma} detector at PEP. Two particle correlations are studied as a function of Q, the momentum difference as measured in the rest frame of the pion pair, and as a function of q{sub 0}, the energy difference as measured in the lab frame. The Bose-Einstein enhancement is observed when Q is small even when the energy difference, q{sub 0}, is substantial. This observation provides evidence that the Bose-Einstein correlations are best described by a model that correctly accounts for the relativistic motion of the particle sources. Three-pion correlations are measured both by using a standard three-pion correlation function, and also by using a correlation function for which the correlations between the pairs of pions within the triplet have been subtracted. The observation of three-pion correlations after pair correlations have been subtracted supports the interpretation that the observed correlations are due to Bose-Einstein interference.

• Research Organization: California Univ., Berkeley, CA (USA)
• OSTI ID: 6098157
• 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
ANNIHILATION
BASIC INTERACTIONS
BOSE-EINSTEIN STATISTICS
BOSONS
CORRELATION FUNCTIONS
CORRELATIONS
DATA ANALYSIS
ELECTROMAGNETIC INTERACTIONS
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
FUNCTIONS
GEV RANGE
GEV RANGE 10-100
HADRONS
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
MESONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PEP STORAGE RINGS
PIONS
PSEUDOSCALAR MESONS
STORAGE RINGS