Hard Photon Processes In Electron Positron Annihilation At 29 Gev PDF Download

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Hard Photon Processes in Electron-positron Annihilation at 29 GeV.

Hard Photon Processes in Electron-positron Annihilation at 29 GeV.
Author:
Publisher:
Total Pages:
Release: 1986
Genre:
ISBN:

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The hard photon processes .mu mu gamma. and hadrons + .gamma. in ee− annihilation at 29 GeV have been studied. The study is based on an integrated luminosity of 226 pb−1 taken at PEP with the Mark II detector. For the .mu mu gamma. process, a small fraction of non-planar events are observed with missing momentum along the beam direction. The resulting missing energy spectrum is consistent with that expected from higher order effects. The observed cross section is consistent with the predicted cross section for this process, sigma/sup exp/sigma/sup th/ = .90 +- 05 +- 06. The observed hard photon energy spectrum and mass distributions are found to be in agreement with O(.cap alpha.3) QED. The measured charge asymmetry is in good agreement with the predicted value, A/sub exp/A/sub th/ = .83 +- 25 +- 12. The .mu gamma. invariant mass distribution is used to place a limit on a possible excited muon coupling G.gamma./M* for excited muon masses in the range 1


Nuclear Science Abstracts

Nuclear Science Abstracts
Author:
Publisher:
Total Pages: 612
Release: 1976
Genre: Nuclear energy
ISBN:

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Energy Research Abstracts

Energy Research Abstracts
Author:
Publisher:
Total Pages: 872
Release: 1988
Genre: Power resources
ISBN:

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Nuclear Science Abstracts

Nuclear Science Abstracts
Author:
Publisher:
Total Pages: 1162
Release: 1973
Genre: Nuclear energy
ISBN:

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Positron Annihilation

Positron Annihilation
Author: A.T. Steward
Publisher: Elsevier
Total Pages: 455
Release: 2012-12-02
Genre: Science
ISBN: 0323149820

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Positron Annihilation focuses on the process of positron annihilation in different environments. Partitioned into two parts with 42 chapters, the book contains the contributions of authors who have done research on the annihilation of positrons, which brought about valuable information on the properties of matter. The first part of the book deals with lengthy review articles, including a survey of the physics of positron annihilation; positron annihilation in metals and the theory involved in the process; and positron annihilation in alkali halides and ionic crystals. Positronium formation and interaction in gases, molecular substances, and ionic crystals are also given attention. Gaseous positronics and positron annihilation in condensed gases and liquids are also discussed. The second part of the book focuses on developments on positron annihilation and the direction of research on this field. The studies concentrate on positron annihilation in various crystals, metals, mercury, liquefied gases, helium, and metal oxides. Numerical representations and analyses are presented to support the processes involved. The book can best serve the interest of those who want to explore further the annihilation of positrons.


Energy Research Abstracts

Energy Research Abstracts
Author:
Publisher:
Total Pages: 648
Release: 1987
Genre: Power resources
ISBN:

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