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Author : Robert Christiaan Wilhelmus van Gulik
Publisher :
ISBN 13 : 9789042301757
Total Pages : 165 pages
Book Rating : 4.3/5 (17 download)
Download or read book Resonance Production in Two-photon Collisions written by Robert Christiaan Wilhelmus van Gulik and published by . This book was released on 2001 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Frederick Edward Butler
Publisher :
ISBN 13 :
Total Pages : 238 pages
Book Rating : 4.:/5 (34 download)
Download or read book Resonant Production in Two Photon Collisions written by Frederick Edward Butler and published by . This book was released on 1989 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Resonant Production in Two Photon Collisions written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Using 220 picobarn/sup /minus/1/ of data collected by the Mark II detector at PEP, we have measured the width of the [eta]' for quasi real photons. The width is separately measured in the three reactions ee/sup /minus// .-->. ee/sup /minus//[eta]°.pi.+.pi./sup /minus//; [eta]° .-->. .gamma gamma., e+e/sup /minus// .-->. e+e/sup /minus//[eta]°.pi.+.pi./sup /minus//; [eta]° .-->. .pi.+.pi./sup /minus//(.pi.°, .gamma.) and e+e/sup /minus// .-->. e+e/sup /minus//[rho]°.gamma., giving a statistically weighted average two-photon width of GAMMA/sub [eta]'.--> gamma gamma./ = 5. 21+-0.28 keV. As a by-product of the measurement of GAMMA/sub /eta/'.--> gamma gamma./ using the decay mode /eta/' .-->. [rho].gamma., we also measured a two-photon decay width for the a2(1320) of GAMMA/sub a 2(1320).--> gamma gamma./ = 1.17+-0. 15+-0.25 keV. 47 refs., 50 figs., 8 tabs.
Download or read book Production of Resonances in Photon-photon Collisions written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The subject of production of resonances via two photons in ee- colliding beams has finally come into its own. In particular, the eta meson is already changing from this year's sensation to next year's normalization. As for the other old physics mesons with even charge conjugation it seems likely that measurements of the scalar and tensor mesons coupling to two photons are quite doable and will be forthcoming. These will yield some interesting information on the quark content of these states and/or the dynamics of their two photon decays. As for the charmonium states, a measurement of some of the two photon decay widths would be quite interesting in terms of the information it gives on the dynamics of this system. However, even at LEP energies the cross sections for production of any particular state are rather small and one must be lucky to have a detectable decay mode or modes with substantial branching fraction. Finally, there is the .pi.° which started the whole subject. A measurement of this coupling is much easier using the complementary technique for determining two photon widths-the Primakoff effect. GAMMA(.pi.° .-->. .gamma gamma.) has long since been measured with high accuracy in this way.
Author : Kent Arthur Schwitkis
Publisher :
ISBN 13 :
Total Pages : 344 pages
Book Rating : 4.:/5 ( download)
Download or read book A Study of Resonance Production in Two-photon Reactions written by Kent Arthur Schwitkis and published by . This book was released on 1987 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Natalie Ann Roe
Publisher :
ISBN 13 :
Total Pages : 248 pages
Book Rating : 4.F/5 ( download)
Download or read book Resonance Production in Two-photon Interactions written by Natalie Ann Roe and published by . This book was released on 1989 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 22 pages
Book Rating : 4.:/5 (16 download)
Download or read book RESONANCE PRODUCTION BY TWO-PHOTON INTERACTIONS AT SPEAR. written by and published by . This book was released on 1981 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two-photon interactions have been studied with the SLAC-LBL Mark II magnetic detector at SPEAR. The cross section for?' production by the reaction ee− → e+e−?' has been measured at beam energies from 2.0 GeV to 3.7 GeV. The radiative width?{sub??}(?') has been determined to be 5.8 ± 1.1 keV (±20% systematic uncertainty). Upper limits on the radiative widths of the f(1270), A2(1310) and f'(1515) tensor mesons have been determined. A search has been made for production of the E(1420) by?{gamma} collisions, but no signal is observed.
Author : D O Caldwell
Publisher : World Scientific
ISBN 13 : 981455460X
Total Pages : 532 pages
Book Rating : 4.8/5 (145 download)
Download or read book Photon-photon Collisions - 9th International Workshop On Photon-photon Collisions written by D O Caldwell and published by World Scientific. This book was released on 1992-12-31 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proceedings blend current and future two-photon physics. Developments since the last Photon-Photon Workshop four years ago are summarized, and the future of the field is projected, not only at existing accelerators, but also at heavy-ion colliders B-factories, and especially linear colliders with back-scattered laser beams.
Download or read book Resonance Formation in Photon-photon Collisions written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent experimental progress on resonance formation in photon-photon collisions is reviewed with particular emphasis on the pseudoscalar and tensor nonents and on the .gamma gamma.* production of spin-one resonances. 37 refs., 17 figs., 5 tabs.
Author : F. Kapusta
Publisher : World Scientific
ISBN 13 : 981453384X
Total Pages : 358 pages
Book Rating : 4.8/5 (145 download)
Download or read book Two-photon Physics written by F. Kapusta and published by World Scientific. This book was released on 1994 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (871 download)
Download or read book Two-Photon Processes at Intermediate Energies written by and published by . This book was released on 2001 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Exclusive hadron production processes in photon-photon collisions provide important tests of QCD at the amplitude level, particularly as measures of hadron distribution amplitudes and skewed parton distributions. The determination of the shape and normalization of the distribution amplitudes has become particularly important in view of their importance in the analysis of exclusive semi-leptonic and two-body hadronic B-decays. Interesting two-photon physics, including doubly-tagged [gamma]*[gamma]* reactions, will be accessible at low energy, high luminosity ee− colliders, including measurements of channels important in the light-by-light contribution to the muon g-2 and the study of the transition between threshold production controlled by low-energy effective chiral theories and the domain where leading-twist perturbative QCD becomes applicable. The threshold regime of hadron production in photon-photon and ee− annihilation, where hadrons are formed at small relative velocity, is particularly interesting as a test of low energy theorems, soliton models, and new types of resonance production. Such studies will be particularly valuable in double-tagged reactions where polarization correlations, as well as the photon virtuality dependence, can be studied.
Author : Ch Berger
Publisher : Springer
ISBN 13 :
Total Pages : 448 pages
Book Rating : 4.3/5 (91 download)
Download or read book Photon Photon Collisions written by Ch Berger and published by Springer. This book was released on 1983 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Maria-Novella Kienzle-Focacci
Publisher : World Scientific
ISBN 13 : 9789812380531
Total Pages : 444 pages
Book Rating : 4.3/5 (85 download)
Download or read book Photon 2001 written by Maria-Novella Kienzle-Focacci and published by World Scientific. This book was released on 2002 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume reports on all aspects of high energy photon interactions using both photon and proton targets. Significant new results from the LEP and HERA experiments as well as from CLEO II and BELLE are presented. These data are confronted with diverse theoretical models. In particular, predictions of QCD in both the perturbative and the non-perturbative sector are extensively discussed. The prospects for gamma-gamma physics at future high energy colliders are also reviewed. In total 72 papers are collected.The proceedings have been selected for coverage in: ? Index to Scientific & Technical Proceedings (ISTP CDROM version / ISI Proceedings)
Download or read book Photon-photon Collisions written by and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies of photon-photon collisions are reviewed with particular emphasis on new results reported to this conference. These include results on light meson spectroscopy and deep inelastic e.gamma. scattering. Considerable work has now been accumulated on resonance production by .gamma gamma. collisions. Preliminary high statistics studies of the photon structure function F2/sup .gamma./(x, Q2) are given and comments are made on the problems that remain to be solved.
Author :
Publisher :
ISBN 13 :
Total Pages : 562 pages
Book Rating : 4.:/5 (94 download)
Download or read book Resonance Production in Two-photon Processes written by and published by . This book was released on 1991 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recent Developments in the Theory of Photon-photon Collisions written by and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past few years the field of photon-photon collisions has emerged as one of the best testing grounds for QCD, particularly in the area of exclusive and inclusive hard scattering processes, exotic resonance production, and detailed tests of the coupling of real and virtual photons to the quark current. In this summary of contributed papers, I will briefly review recent theoretical progress in the analysis of two-photon reactions and possible directions for future work. 29 references.
Author : F Kapusta
Publisher : World Scientific
ISBN 13 : 981455040X
Total Pages : 358 pages
Book Rating : 4.8/5 (145 download)
Download or read book Two-photon Physics: From DaΦne To Lep200 And Beyond written by F Kapusta and published by World Scientific. This book was released on 1994-12-20 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two-photon physics, i.e. photon-photon collisions in electron-positron colliders, a relatively new field in elementary particle physics, has become very popular in the last 20 years. Many experiments have been performed in this field, and the theoretical implications (in particular in quantum chromodynamics) have been studied in much detail. Nine international workshops devoted to two-photon physics have taken place between 1973 and 1992.This meeting was particularly timely, since a new generation of electron-positron colliders is presently being built or planned. These colliders will involve a large spectrum of beam energies, but their common characteristics should be a high particle flux (luminosity). This should allow for measuring many new phenomena as well as for studying known processes with much higher precision than before. Particularly promising is the prospect of building a dedicated high-energy photon collider; this should become possible using a laser technique allowing for the “conversion” of a linear electron beam into a photon beam.Over 60 physicists (both experimentalists and theorists), mainly from European countries (France, Britain, Italy, Germany, Russia, as well as Sweden and Switzerland), discussed these new possibilities at the above meeting. Over 30 talks were presented and many extended debates took place.
