Anomalous Electron-muon and Electron-hadron Production in Electron-positron Annihilation PDF Download
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Author: Betty Puifun Kwan
Publisher:
ISBN:
Category : Hadrons
Languages : en
Pages : 274
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Book Description
Author: Betty Puifun Kwan
Publisher:
ISBN:
Category : Hadrons
Languages : en
Pages : 274
Get Book Here
Book Description
![Anomalous Electron--muon and Electron--hadron Production in Electron--positron Annihilation. [Branching Ratio L/sub H/. --]. Charged Hadron + 2. Nu., . Nu. + N. Gamma., Tau. --]. Nu. /sub Tau/e−. Nu. /sub E−/, . Nu. /sub Tau/. Mu Nu. /sub. Mu. /, Rare Modes, Cross Sections]. PDF](https://books.google.com/books/content/images/frontcover/1BPCwQEACAAJ?fife=w80-h100)
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Results of studies of anomalous electron-muon and electron-hadron events produced in electron-positron annihilation are presented. The data for this work were obtained with a lead-glass counter system, which was added to one octant of the Stanford Linear Accelerator Center-Lawrence Berkeley Laboratory magnetic detector at the electron-positron storage ring SPEAR. The lead-glass counter system provides good electron identification for part of the magnetic detector. The events under study have two detected charged particles and any number of detected photons. One detected charged particle is identified as an electron in the lead-glass counter system. The other detected charged particle is identified as a muon or hadron in the magnetic detector. Anomalous events are events which are not subject to conventional explanations; examples of conventional explanations are misidentification of particles or the decay of ordinary or strange hadrons. These data confirm previous observations of anomalous lepton production at SPEAR and DESY. The data corrected for charm background are consistent with heavy lepton production and decay. The branching ratio for the heavy lepton to decay into an electron and two neutrinos was measured to be 0.21 +- 0.05. The branching ratio for the heavy lepton to decay into one charged hadron, one neutrino and any number of photons was measured to be 0.28 +- 0.13. They are consistent with the theoretical values within the errors.
Author: Francis Bernard Heile
Publisher:
ISBN:
Category : Leptons (Nuclear physics)
Languages : en
Pages : 126
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Author:
Publisher:
ISBN:
Category : Hadrons
Languages : en
Pages :
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Results of studies of anomalous electron-muon and electron-hadron events produced in electron-positron annihilation are presented. The data for this work were obtained with a lead-glass counter system, which was added to one octant of the Stanford Linear Accelerator Center-Lawrence Berkeley Laboratory magnetic detector at the electron-positron storage ring SPEAR. The lead-glass counter system provides good electron identification for part of the magnetic detector. The events under study have two detected charged particles and any number of detected photons. One detected charged particle is identified as an electron in the lead-glass counter system. The other detected charged particle is identified as a muon or hadron in the magnetic detector. Anomalous events are events which are not subject to conventional explanations; examples of conventional explanations are misidentification of particles or the decay of ordinary or strange hadrons. These data confirm previous observations of anomalous lepton production at SPEAR and DESY. The data corrected for charm background are consistent with heavy lepton production and decay. The branching ratio for the heavy lepton to decay into an electron and two neutrinos was measured to be 0.21 +- 0.05. The branching ratio for the heavy lepton to decay into one charged hadron, one neutrino and any number of photons was measured to be 0.28 +- 0.13. They are consistent with the theoretical values within the errors.
Author: Ole E. Mogensen
Publisher: Springer Science & Business Media
ISBN: 3642851231
Category : Science
Languages : en
Pages : 279
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Book Description
The only critical discussion available on the chemistry of the two "strange" light particles, the positron and positronium, with much space devoted to the excess electron. Positron annihilation allows the investigation of many unusual phenomena in the reaction kinetics of the positron, positronium, and excess electron, and in radiation chemistry and physics, while also providing important information on defects in solids.
Author: B. Foster
Publisher: CRC Press
ISBN:
Category : Electron-positron interactions
Languages : en
Pages : 256
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Book Description
A detailed introduction to the main topics in e +e - annihilation, with particular emphasis on experimental work. Invaluable to both graduate students studying high-energy physics & scientists entering the field.
Author: A.T. Steward
Publisher: Elsevier
ISBN: 0323149820
Category : Science
Languages : en
Pages : 455
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Book Description
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.
Author: B. Adeva
Publisher:
ISBN:
Category :
Languages : en
Pages : 31
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Author: Adriaan Clemens König
Publisher:
ISBN: 9789090008844
Category :
Languages : en
Pages : 111
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