HBT MEASUREMENT OF THE EXPANSION VELOCITY OF PION-PRODUCTION VOLUME

Authors
ANIKINA MK AKSINENKO VD AVRAMENKO SA BANNIK BP BELIKOV YA GAJEWSKI K GALPERIN AG GLAGOLEV NS GOLOKHVASTOV AI KHOROZOV SA KONDRATIEV VP KOZUBSKY EV KRASNOV LV KULAKOV BA LUKSTINS J MANDRIK OY MANYAKOV PK MATYUSHIN AT MATYUSHIN VT MIRKOWSKI J NURGOZHIN NN OKHRIMENKO LS OKHRIMENKO OV PAVLOWSKI Z PIATKOWSKI A RADOMANOV VB SAITOV IS SEDYKH SA SHEVCHENKO IE STEPHANOV IV TARAN GG ZAVYALOV VF
Citation
Mk. Anikina et al., HBT MEASUREMENT OF THE EXPANSION VELOCITY OF PION-PRODUCTION VOLUME, Physics letters. Section B, 397(1-2), 1997, pp. 30-36
Citations number
27
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
397
Issue
1-2
Year of publication
1997
Pages
30 - 36
Database
ISI
SICI code
0370-2693(1997)397:1-2<30:HMOTEV>2.0.ZU;2-W
Abstract
Using a new method of data processing in the investigation of interfer ence correlations of identical particles, a direct proof of nonstation arity of the pi(-) production volume in central Mg-Mg collisions at a beam momentum of p(lab) = 4.4 GeV/c per nucleon was obtained. The velo city of a source of correlated pi(-) meson pairs is introduced as a fr ee parameter in the Lorentz transformed approximation formula of the i nterference peak. This velocity increases with increasing the velocity of a subset of pi(-) mesons which are chosen for the interference ana lysis. The source velocity is the new experimentally measurable physic al variable of interference analysis, apart from space-time sizes of t he source. (C) 1997 Published by Elsevier Science B.V.