Bose-Einstein Correlations in Ee± Collisions PDF Download
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Author: Ivanna Juricic
Publisher:
ISBN:
Category :
Languages : en
Pages : 348
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Author: Ivanna Juricic
Publisher:
ISBN:
Category :
Languages : en
Pages : 348
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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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.
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ISBN:
Category :
Languages : en
Pages : 24
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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.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 28
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Bose-Einstein correlations between identical particles are measured in samples of proton-proton collisions at 0.9 and 7 TeV centre-of-mass energies, recorded by the CMS experiment at the LHC. The signal is observed in the form of an enhancement of number of pairs of same-sign charged particles with small relative momentum. The dependence of this enhancement on kinematic and topological features of the event is studied.
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Author: [Study Group] ATLAS Collaboration CERN
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Category :
Languages : en
Pages : 0
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Languages : en
Pages : 5
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Author: Vincent Cianciolo
Publisher:
ISBN:
Category :
Languages : en
Pages : 336
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Author: Richard M. Weiner
Publisher: John Wiley & Sons
ISBN:
Category : Science
Languages : en
Pages : 272
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The first textbook on Bose-Einstein correlations and their applications, an interdisciplinary topic bridging particle physics and quantum physics, and currently the centre of considerable interest in high energy physics. Besides its fundamental importance for particle physics, this phenomenon constitutes the main tool for the determination of sizes and lifetimes of particle sources. The contents of this book are divided into the following chapters, each of which concludes with exercises designed to test the reader's understanding of the concepts and theories included therein: The Foundations; Hadron Interferometry; Currents; Sources; Applications to Ultrarelativistic Nucleus-Nucleus Collisions; Correlations and Multiplicity Distributions; Photos versus Hadrons. It provides the first systematic analysis and comparison of the different theoretical approaches to the subject and will be invaluable to theorists and experimentalists in particle and nuclear physics, quantum optics and astrophysics.
Author: Syed Eram Abbas Rizvi
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Category :
Languages : en
Pages :
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Category :
Languages : en
Pages : 0
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