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Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
The connection of rare decays to supersymmetric grand unification is highlighted, and a brief review of the status of rare decay experiments is given. The status of the MEGA experiment, a search for [mu][sup +] [yields] e[sup +][gamma], is reported. Some ideas for a new experimental arrangement that has the potential to reach a sensitivity of 10[sup [minus]14] are presented.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
The connection of rare decays to supersymmetric grand unification is highlighted, and a brief review of the status of rare decay experiments is given. The status of the MEGA experiment, a search for [mu][sup +] [yields] e[sup +][gamma], is reported. Some ideas for a new experimental arrangement that has the potential to reach a sensitivity of 10[sup [minus]14] are presented.
Author: Publisher: ISBN: Category : Languages : en Pages : 5
Book Description
The MEGA experiment at LAMPF is the only current search for [mu][sup +][yields]e[sup +][gamma] underway. The limit on this rare muon-decay process tests the standard model of electroweak interactions. This report covers the status of the analysis of data taken in 1992 and the prospects for future improvements.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
Searching for decays that change total lepton family number is an excellent method to explore potential physics beyond the Standard Model because those processes are predicted to be zero except when new physics is present. Essentially all extensions of the Standard Model that introduce new, heavy particles predict the existence of these rare decays, though the most probable channel is highly model dependent. Recently, the prejudice has grown within the physics community that supersymmetry is an extension that is likely to be related to nature. Barbieri, Hall, and Strumia show that rare decays are signatures for grand unified supersymmetry and calculate the rates for [mu][sup +] [r-arrow] e[sup +][gamma] and related processes for a wide range of parameters of these models. They conclude that [mu][sup +] [r-arrow] e[sup +][gamma] has the largest rate by more than two orders of magnitude, and it ranges between the current experimental limit and 10[sup [minus]14]. Hence, there is continuing interest in the community for an experiment that could have a sensitivity near 10[sup [minus]14]. Lessons are drawn from the experience of the MEGA experiment in searching for [mu][sup +] to e[sup +][gamma]. In light of that experience, some ideas are evaluated regarding new searches that might take place in the ERA of a source of low-energy muons associated with a muon collider.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
The MEGA experiment is designed to search for the lepton-flavor number non-conserving rare decay [mu] [yields] [ital e][gamma]. Data- taking is complete, with 450 million events on tape taken over approximately 10[sup 7] seconds. A small portion of the data sample has been processed through the complete event reconstruction codes to search for the [mu] [yields] [ital e][gamma] process. No evidence for the [mu] [yields] [ital e][gamma] decay is observed at a sensitivity of [approximately]7 x 10[sup -11] (90% confidence).
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
We present a limit on the branching fraction for the decay B[sup 0][yields][gamma][gamma] using data collected at the[Upsilon](4S) resonance with the BABAR detector at the PEP-II asymmetric--energy e[sup+]e[sup -] collider. Based on the observation of one event in the signal region, out of a sample of 21.3 x 10[sup 6] e[sup+]e[sup -][yields][Upsilon](4S)[yields] B[bar B] decays, we establish an upper limit on the branching fraction of[Beta] (B[sup 0][yields][gamma][gamma])
Author: Advisory Committee on Technology and Society Publisher: National Academies Press ISBN: 9780309037860 Category : Social Science Languages : en Pages : 1298
Book Description
Cities and Their Vital Systems asks basic questions about the longevity, utility, and nature of urban infrastructures; analyzes how they grow, interact, and change; and asks how, when, and at what cost they should be replaced. Among the topics discussed are problems arising from increasing air travel and airport congestion; the adequacy of water supplies and waste treatment; the impact of new technologies on construction; urban real estate values; and the field of "telematics," the combination of computers and telecommunications that makes money machines and national newspapers possible.
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Author: ![New Ideas to Improve Searches for [mu][sup +] [r-arrow] E[sup +][gamma]. PDF](https://books.google.com/books/content/images/frontcover/lrHEjwEACAAJ?fife=w80-h100)
Author: ![A Study of the Decay [mu] [yields] E[gamma] by the MEGA Experiment PDF](https://books.google.com/books/content/images/frontcover/gGe9jwEACAAJ?fife=w80-h100)
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Author: ![Search for the Decay B[sup 0][yields] Gamma-gamma PDF](https://books.google.com/books/content/images/frontcover/XQK9jwEACAAJ?fife=w80-h100)
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Author: Advisory Committee on Technology and Society
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