Download or read book Bose Einstein Correlations of Pions in Ee Annihilation at 29 GeV Center of mass Energy written by and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements of two- and three-particle correlations between like-sign pions produced in ee− annihilation at 29 GeV center-of-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 q0, the energy difference as measured in the lab frame. The Bose-Einstein enhancement is observed when Q is small even when the energy difference, q0, 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. 56 refs.
Download or read book Bose Einstein Correlations of Pions in E e Annihilation at 29 GeV Center of mass Energy written by Robert Ellsworth Avery and published by . This book was released on 1989 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bose Einstein Correlations Observed in E e Annihilation at a Centre of Mass Energy of 34 GeV written by Tasso Collaboration and published by . This book was released on 1985 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bose einstein Correlations Observed in E E Annihilation at a Center of mass Energy of 34 GeV written by and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bose Einstein Correlations in Ee Collisions written by and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The MARK II detector is used to study the Bose-Einstein correlation between pairs and triplets of charged pions produced in hadronic decays of the J)psi), the .sqrt.s = 4 to 7 GeV continuum above the J)psi), two photon events at .sqrt.s = 29 GeV, and e/sup)plus/)e/sup)minus/) annihilation events at .sqrt.s = 29 GeV as a function of Q2, the four-momentum transfer squared. After corrections for Coulomb effects and pion misidentification, we find a nearly full Bose-Einstein enhancement .cap alpha. in the J)psi) and the two photon data and about half the maximum value in the other two data sets. The radius parameter)tau)(an average over space and time) given by pion pair analyses lies within a band of +-0.10 fm around 0.73 fm and is the same, within errors, for all four data sets. Pion triplet analyses also give a consistent radius of approx. 0.54 fm. fits to two-dimensional distributions R(q/sub T/2, q/sub C/2) of invariant components of Q2 = q/sub T/2)plus) q/sub C/2 give)tau)/sub T/ approx.)tau)C approx.)tau), where q/sub T/ is the transverse three-momentum difference calculated with respect to the net pair three-momentum, and q/sub C/ is in effect the longitudinal three-momentum difference in the pion pair rest frame. When q/sub T/ is calculated with respect to the jet axis for two-jet events in the e/sup)plus/)e/sup)minus/) annihilation data at .sqrt.s = 29 GeV, a fit to R(q/sub T/2, q/sub C/2) also gives)tau)/sub T/ approx.)tau)/sub C/ approx.)tau). Noting that q/sub L/ and q0 are not invariant, we make fits to R(/sub T//sup T/, q/sub L/2) and to R(q/sub T/2, q02) (Kopylov formulation), and we find)tau)0 approx.)tau)/sub L/ approx.)23))tau)/sub T/ to)12))tau)/sub T/. 44 refs., 43 figs., 15 tabs.
Download or read book Inclusive Distributions and Two Particle Correlations in E e Annihilation at 29 GeV Center of mass Energy written by Marjorie Shapiro and published by . This book was released on 1984 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bose Einstein correlations observed in e annihilation at a centre of mass energy of 34 GeV written by and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Inclusive Hadron Production and Two Particle Correlations in Ee Annihilation at 29 GeV Center of mass Energy written by and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We have studied hadron production in ee− annihilation at 29 GeV center-of-mass energy using the PEP-4 Time Projection Chamber Detector. The inclusive cross sections and mean multiplicities for .pi./sup + -/, K/sup + -/ and (p + anti p) production have been measured using ionization energy loss to separate particle species. We find on average 10.7 +- 0.6 .pi./sup + -/, 1.35 +- 13 K/sup + -/ and 0.60 +- 0.08 (p + anti p) per multihadron event. The differential cross section is well described by a number of Monte Carlo hadronization models. In addition, we have observed correlations in rapidity space for identified pions and kaons. Short-range KK correlations provide evidence for local flavor compensation during hadronization. Long-range .pi pi. and KK correlations indicate that the initial partons carry flavor. We also observe significant long-range .pi. K correlations as a result of heavy quark decays. 85 references, 67 figures, 11 tables.
Download or read book A Measurement of the Bose Einstein Correlation for Two Pions in Proton antiproton Collisions at Center of Mass Energy 1 8 TeV written by Theodoros Alexopoulos and published by . This book was released on 1991 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mass Identified Particle Production and Bose Einstein Correlations at 1800 GeV written by and published by . This book was released on 1994 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results were shown on transverse momentum distributions of [pi], k and p from Fermilab experiment E735. This experiment, related to the search for quark gluon plasma, was run at the Fermilab Tevatron collider with {bar p}p collisions at √s = 1800 GeV. Dependence of particle ratios on transverse momentum and center of mass energies was shown. Results were also shown on Bose Einstein correlations between pairs of identical pions and a measure of size and lifetime of the source.
Download or read book Image and Logic written by Peter Galison and published by University of Chicago Press. This book was released on 1997-10 with total page 1002 pages. Available in PDF, EPUB and Kindle. Book excerpt: Engages with the impact of modern technology on experimental physicists. This study reveals how the increasing scale and complexity of apparatus has distanced physicists from the very science which drew them into experimenting, and has fragmented microphysics into different technical traditions.
Download or read book Bose Einstein Correlations in 14 6 Ater Dot GeV written by and published by . This book was released on 1990 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The E802 spectrometer at the Brookhaven AGS has been used to obtain two-particle inclusive pion distributions from E/A = 14.6 GeV 28Si + 197Au and 27Al interactions. Data are presented for pions near center-of-mass rapidity, in the nucleon-nucleon frame, from central events. We present preliminary results for source distribution parameters obtained by fitting the two-particle correlation function. The potential for studying kaon correlations in the E802 apparatus is also discussed.
Download or read book High Energy Physics Index written by and published by . This book was released on 1989 with total page 708 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bose Einstein Correlations in Ee Collisions written by Ivanna Juricic and published by . This book was released on 1987 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book First Measurement of Bose Einstein Correlations in Proton Proton Collisions at sqrt s written by and published by . This book was released on 2010 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bose-Einstein correlations have been measured using samples of proton-proton collisions at 0.9 and 2.36 TeV center-of-mass energies, recorded by the CMS experiment at the CERN Large Hadron Collider. The signal is observed in the form of an enhancement of pairs of same-sign charged particles with small relative four-momentum. The size of the correlated particle emission region is seen to increase significantly with the particle multiplicity of the event.
Download or read book A Measurement of Bose einstein Correlations in E e Annihilation at TRISTAN written by Amy Collaboration and published by . This book was released on 1995 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Particle correlation observed in e 1hn e 1hn ee annihilation into handrons at c m energies between 29 and 37 GeV written by and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
