The dependence of proton correlations on integral characteristics of eA interactions

Degtyarenko, P. V.; Doroshkevich, E.; Efremenko, Y. V.; Gavrilov, V.; Kossov, M.; Leksin, G.A.; Stavinsky, A.; Vlassov, A. V.

doi:10.1007/bf01289590

Cited by 5 publications

(3 citation statements)

References 6 publications

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“…

Similar effect was observed also for protons produced in hadron-and electron-nucleus interactions [12].

…”

supporting

confidence: 78%

“…( 26) and the discussion of the inclusive correlation function which appears to be different from 1 at whatever high densities. 12 The iterative correction procedure is usually used for small-acceptance detectors triggered by the requirement of at least two identical pions in the detector. The mixed reference sample then differs from the product of the single-particle spectra, being much more influenced by the residual BE correlations.…”

Section: Correlation Functionsmentioning

confidence: 99%

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Multiboson effects in multiparticle production

Lednický

Lyuboshitz²,

Mikhailov³

et al. 2000

Phys. Rev. C

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The influence of multiboson effects on pion multiplicities, single-pion spectra and two-pion correlation functions is discussed in terms of an analytically solvable model. The applicability of its basic factorization assumption is clarified. An approximate scaling of the basic observables with the phase space density is demonstrated in the low density (gas) limit. This scaling and also its violation at high densities due to the condensate formation is described by approximate analytical formulae which allow, in principle, for the identification of the multiboson effects among others. For moderate densities indicated by the experimental data, a fast saturation of multiboson effects with the number of contributing cumulants is obtained, allowing for the account of these effects in realistic transport code simulations. At high densities, the spectra are mainly determined by the universal condensate term and the initially narrow Poisson multiplicity distribution approaches a wide Bose-Einstein one. As a result, the intercepts of the inclusive and fixed-$n$ correlation functions (properly normalized to 1 at large relative momenta) approach 2 and 1, respectively and their widths logarithmically increase with the increasing phase space density. It is shown that the neglect of energy-momentum constraints in the model is justified except near a multipion threshold, where these constraints practically exclude the possibility of a very cold condensate production. It is argued that spectacular multiboson effects are likely to be observed only in the rare events containing sufficiently high density (speckle) fluctuations.Comment: 30 pages including 10 figures, LaTex, a revised version of SUBATECH 99-04 (aps1999_mar21_001) resubmitted to Phys. Rev. C; Chapter II made shorter, figure description made more clear, a comparison with most recent works added in Chapter V

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“…

Similar effect was observed also for protons produced in hadron-and electron-nucleus interactions [12].

…”

supporting

confidence: 78%

Section: Correlation Functionsmentioning

confidence: 99%

Multiboson effects in multiparticle production

Lednický

Lyuboshitz²,

Mikhailov³

et al. 2000

Phys. Rev. C

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“…Ab initio calculations of the nuclear ground state are successful for nuclei up to A = 8 and higher [1100,1101] and lattice QCD calculations continue to make progress toward a fundamental understanding of the nucleon The size parameter r rms as a function of the mean pair momentum p = | p 1 + p 2 |/2 is shown for different nuclear targets [1095]. Data from Refs [1096,1097,1098] are shown which correspond to e − 16 O interactions at initial energy of 5 GeV and Q 2 < 0.1(GeV/c) 2 are shown for comparison. Right panel: Preliminary correlation functions for π + π + from the CLAS detector at Jefferson Lab [1099].…”

Section: Bose-einstein Correlations At An Electron-ion Collidermentioning

confidence: 99%

Gluons and the quark sea at high energies: distributions, polarization, tomography

Boer¹,

Diehl²,

Milner³

et al. 2011

198

291

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ForewordThe study of the fundamental structure of nuclear matter is a central thrust of physics research in the United States. As indicated in Frontiers of Nuclear Science, the 2007 Nuclear Science Advisory Committee long range plan, consideration of a future Electron-Ion Collider (EIC) is a priority and will likely be a significant focus of discussion at the next long range plan. We are therefore pleased to have supported the ten week program in fall 2010 at the Institute of Nuclear Theory which examined at length the science case for the EIC. This program was a major effort; it attracted the maximum allowable attendance over ten weeks.This report summarizes the current understanding of the physics and articulates important open questions that can be addressed by an EIC. It converges towards a set of "golden" experiments that illustrate both the science reach and the technical demands on such a facility, and thereby establishes a firm ground from which to launch the next phase in preparation for the upcoming long range plan discussions. We thank all the participants in this productive program. In particular, we would like to acknowledge the leadership and dedication of the five co-organizers of the program who are also the co-editors of this report.David Kaplan, Director, National Institute for Nuclear Theory Hugh Montgomery, Director, Thomas Jefferson National Accelerator Facility Steven Vigdor, Associate Lab Director, Brookhaven National Laboratory iii Preface This volume is based on a ten-week program on "Gluons and the quark sea at high energies", which took place at the Institute for Nuclear Theory (INT) in Seattle from September 13 to November 19, 2010. The principal aim of the program was to develop and sharpen the science case for an Electron-Ion Collider (EIC), a facility that will be able to collide electrons and positrons with polarized protons and with light to heavy nuclei at high energies, offering unprecedented possibilities for in-depth studies of quantum chromodynamics. Guiding questions were• What are the crucial science issues?• How do they fit within the overall goals for nuclear physics?• Why can't they be addressed adequately at existing facilities?• Will they still be interesting in the 2020's, when a suitable facility might be realized?The program started with a five-day workshop on "Perturbative and Non-Perturbative Aspects of QCD at Collider Energies", which was followed by eight weeks of regular program and a concluding four-day workshop on "The Science Case for an EIC".More than 120 theorists and experimentalists took part in the program over ten weeks. It was only possible to smoothly accommodate such a large number of participants because of the extraordinary efforts of the INT staff, to whom we extend our warm thanks and appreciation. We thank the INT Director, David Kaplan, for his strong support of the program and for covering a significant portion of the costs for printing this volume. We gratefully acknowledge additional financial support provided by BNL and JLab.The program w...

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Proton-pion and two- pion correlations in eA interactions

Degtyarenko¹,

Doroshkevich²,

Kurzenkov³

et al. 1997

Z Phys A - Particles and Fields

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We report here the results on studying of protonpion and two-pion correlations in eA interactions at 5 GeV. Kinematic correlations were studied as a function of the twoparticle opening angle, their momenta and proton multiplicity. The universal properties of correlation functions were found with respect to different particle species. Interferometry method was used to determine the size of the interaction region.

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The dependence of proton correlations on integral characteristics of eA interactions

Cited by 5 publications

References 6 publications

Multiboson effects in multiparticle production

Multiboson effects in multiparticle production

Gluons and the quark sea at high energies: distributions, polarization, tomography

Proton-pion and two- pion correlations in eA interactions

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