A High Sensitivity Search For Mu Gamma The Mega Experiment At Lampf PDF Download
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| Total Pages | : 3 |
| Release | : 1990 |
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Download (A High Sensitivity Search for Mu Gamma Book in PDF, ePub and Kindle
During the past 12 month period the Valparaiso University group has been active on LAMPF experiment 969, known as the MEGA experiment. This experiment is a search for the decay [mu] -> e [gamma], a decay which would violate lepton number conservation and which is strictly forbidden by the standard model for electroweak interactions. Previous searches for this decay mode have set limit the present day limit of 4.9 × 10−11. The MEGA experiment is designed to test the standard model predictions to one part in 10{sup +13}.
| Author | : Valparaiso Univ., IN (USA) |
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| Release | : 1990 |
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Download A High Sensitivity Search for Mu Gamma: The Mega Experiment at LAMPF Book in PDF, ePub and Kindle
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| Total Pages | : 956 |
| Release | : 1994 |
| Genre | : Aeronautics |
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Download Scientific and Technical Aerospace Reports Book in PDF, ePub and Kindle
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| Total Pages | : 852 |
| Release | : 1990 |
| Genre | : Power resources |
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Download Energy Research Abstracts Book in PDF, ePub and Kindle
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| Total Pages | : 10 |
| Release | : 1992 |
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Download High Sensitivity Tests of the Standard Model for Electroweak Interactions. Scientific Progress Report, 16 January 1991--15 January 1992 Book in PDF, ePub and Kindle
The work done on this project was focussed mainly on LAMPF experiment E969 known as the MEGA experiment, a high sensitivity search for the lepton family number violating decay [mu] → e[gamma] to a sensitivity which, measured in terms of the branching ratio, BR = [[mu]→e[gamma]]/[[mu]→e [nu]{sub {mu}} [nu]{sub e}] ≈10−13 is over two orders of magnitude better than previously reported values. The work done on MEGA during this period was divided between that done at Valparaiso University and that done at LAMPF. In addition, some contributions were made to a proposal to the LAMPF PAC to perform a precision measurement of the Michel [rho] parameter, described below.
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| Total Pages | : 1320 |
| Release | : 1992-07 |
| Genre | : Science |
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Download Government Reports Announcements & Index Book in PDF, ePub and Kindle
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| Total Pages | : 1448 |
| Release | : 1993 |
| Genre | : Government reports announcements & index |
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Download Government Reports Annual Index Book in PDF, ePub and Kindle
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| Total Pages | : 7 |
| Release | : 1993 |
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Download High Sensitivity Tests of the Standard Model for Electroweak Interactions. [Lepton-family-number-violating Decay ; Michel [rho] Parameter]. Book in PDF, ePub and Kindle
The work done on this project was focused on two LAMPF experiments. The MEGA experiment, a high-sensitivity search for the lepton-family-number-violating decay [mu] [yields] e [gamma] to a sensitivity which, measured in terms of the branching ratio, BR = [[mu] [yields] e [gamma]]/[[mu] [yields] ev[sub [mu]] v[sub e]] [approximately] 10[sup [minus]13], is over two orders of magnitude better than previously reported values. The second is a precision measurement of the Michel [rho] parameter from the positron energy spectrum of [mu] [yields] ev[sub [mu]] v[sub e] to test the V-A theory of weak interactions. The uncertainty in the measurement of the Michel [rho] parameter is expected to be a factor of three lower than the present reported value.
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| Total Pages | : 15 |
| Release | : 1991 |
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Download Results from Beam Tests of MEGA's Low-mass, High-rate Cylindrical MWPCs Book in PDF, ePub and Kindle
One of the leading experimental projects at LAMPF has been the MEGA experiment. This is an experiment to search for the rare decay [mu] 2!e[gamma] with a sensitivity of 10−13. A prime component of this project has been the design and construction of high-rate, low mass MWPCs for the tracking of positrons from muon decay. With rate capabilities of 2 × 104 e/mm2/s and a thickness of 3 × 10−4 radiation lengths, these chambers are state-of-the-art cylindrical MWPCs. Cylindrical chambers of this size (0.9 m2) and thinness have never been previously constructed. The MEGA project at LAMPF has recently succeeded in building chambers with these necessary performance characteristics as demonstrated by data taken from muon decays, cosmic rays, and sources.
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| Release | : 1988 |
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Download The MEGA (Muon Decays Into an Electron and a GAmma Ray) Experiment Book in PDF, ePub and Kindle
The MEGA experiment is designed to search for the .mu. .-->. e.gamma. process with a branching ratio sensitivity of 10−13. This decay violates the empirically established rule of lepton family number conservation and lies outside the Standard Model of electroweak interactions. In order for the experiment to make a factor of 500 improvement over the existing limit, a new design was adopted that employs highly modular, fast detectors and state-of-the-art electronic readout. The detectors are contained in a 15 kG solenoidal field produced by a superconducting magnet. The central region is a positron spectrometer, and the outer region is four layers of pair spectrometers. Data taking is expected to commence in 1989. 6 refs., 3 figs.
