Pion-pion correlations at low relative momentum produced incollisions at 27.5 GeV/c
- 1 May 1994
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 49 (9) , 4373-4393
- https://doi.org/10.1103/physrevd.49.4373
Abstract
We have measured the momentum correlation of pion pairs produced in the collisions of 27.5 GeV/c protons in liquid hydrogen. By considering events for which all final state particles have been measured, we have succeeded in reducing backgrounds due to particle misidentification below 5% for and 1% for . Our use of a precision magnetic spectrometer has provided an accurate determination of particle momenta and excellent acceptance for particle pairs with small relative momentum essential for correlations studies. A large data sample of fully reconstructed events (1 × ) allows us to analyze the correlations for and pairs separately, and also as a function of the final state multiplicity. We find that the pion pair correlations scale 0.98 fm describes the data well. We do not find any indication of multiplicity dependence of the correlation scale for multiplicities from 6 to 14 final state particles.
Keywords
This publication has 28 references indexed in Scilit:
- Intensity interferometry in subatomic physicsReviews of Modern Physics, 1990
- Pion interferometry as a probe of the plasmaNuclear Physics A, 1989
- Pion interferometry of quark-gluon plasmaPhysical Review D, 1986
- The four-prong annihilation of 1.2 GeV/c antiprotons in hydrogen (II) π+π+π−π−π0 final stateNuclear Physics B, 1969
- The four-prong annihilation of 1.2 GeV/c antiprotons in hydrogen (I): Four-pion final stateNuclear Physics B, 1968
- Pion Production in Antiproton-Proton Annihilations at3.3 and 3.7 BeVcPhysical Review B, 1966
- Search for Multipion Resonances in the Reactionp¯+p→3π++3π−+nπ0Physical Review B, 1962
- Influence of Bose-Einstein Statistics on the Antiproton-Proton Annihilation ProcessPhysical Review B, 1960
- Pion-Pion Correlations in Antiproton Annihilation EventsPhysical Review Letters, 1959
- High Energy Nuclear EventsProgress of Theoretical Physics, 1950