A Search for the Rare Decay [mu]+ --> E+[gamma][gamma]
| Author | : David Paul Grosnick |
| Publisher | : |
| Total Pages | : 216 |
| Release | : 1987 |
| Genre | : Muons |
| ISBN | : |
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A Search For The Rare Decay Mu E Gamma Gamma PDF Download
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A Search for the Rare Decay. Mu. . --]. E. Gamma Gamma
| Author | : |
| Publisher | : |
| Total Pages | : |
| Release | : 1987 |
| Genre | : |
| ISBN | : |
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An experimental search for the lepton-family number nonconserving decay, .mu. .-->. e.gamma gamma., has been conducted at the Clinton P. Anderson Meson Physics Facility (LAMPF) using the Crystal Box detector. The detector consists of a modular NaI(Tl) calorimeter, scintillator hodoscope, and a high-resolution, cylindrical drift chamber. It provides a large solid-angle for detecting three-body decays and has good resolutions in the time, position, and energy measurements to eliminate unwanted backgrounds. No evidence for .mu.+ .-->. e+.gamma gamma. is found, giving an upper limit for the branching ratio of GAMMA(.mu. .-->. e.gamma gamma.)/GAMMA(.mu. .-->. e nu anti nu) less than or equal to 7.2 x 10−11 (90% C.L.). This result is an improvement of more than two orders of magnitude in the existing limit. 109 refs., 39 figs.
Search for the Rare Decay [muon](+)[decays To] E(+̳)+[gamma]
| Author | : Philip Michael Tuts |
| Publisher | : |
| Total Pages | : 186 |
| Release | : 1979 |
| Genre | : Muons |
| ISBN | : |
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A Study of the Decay [mu] [yields] E[gamma] by the MEGA Experiment
| Author | : |
| Publisher | : |
| Total Pages | : |
| Release | : 2006 |
| Genre | : |
| ISBN | : |
Download A Study of the Decay [mu] [yields] E[gamma] by the MEGA Experiment Book in PDF, ePub and Kindle
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).
Search for the Decay. Mu. . --]. E. Gamma
| Author | : |
| Publisher | : |
| Total Pages | : |
| Release | : 1986 |
| Genre | : |
| ISBN | : |
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This Letter reports a new experimental search for the family-number-nonconserving decay ..mu.. ..-->.. e..gamma ... There is no evidence for the presence of this decay mode. The upper limit for the branching ratio is GAMMA(..mu.. ..-->.. e..gamma..)/GAMMA(..mu.. ..-->.. enu anti nu)
A Photon Detector System for the Search for the Rare Muon Decay Mu, E Gamma
| Author | : Leo Anthony Van Ausdeln |
| Publisher | : |
| Total Pages | : 326 |
| Release | : 1993 |
| Genre | : |
| ISBN | : |
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In Pursuit of the Rare Decay [mu]+[superscript] [arrow Right] E+[superscript] [gamma]
| Author | : Benjamin Alexander Golden |
| Publisher | : |
| Total Pages | : 257 |
| Release | : 2012 |
| Genre | : |
| ISBN | : 9781267182623 |
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The MEG experiment is the latest in a series of progressively more precise rare decay searches designed to exploit an observation of [mu]+[superscript] [arrow right] e+[superscript] [gamma] or lack thereof as a sensitive low energy probe of new physics. A search for [mu]+[superscript] [arrow right] e+[superscript] [gamma] is performed using the 43 days worth of data acquired by the MEG experiment during 2009. To best estimate the number of signal events in the data, a maximum likelihood fit is performed. A 90% confidence interval is then constructed using the Feldman-Cousins technique. The analysis is done blind by hiding signal-like events until the selection cuts and likelihood function are settled upon. The result is consistent with the null hypothesis and an upper limit is set: BR([mu]+[superscript] [arrow right] e+[superscript] [gamma]
Search for the Decay [mu] --> E + [gamma].
| Author | : Howard Fred Davis |
| Publisher | : |
| Total Pages | : 248 |
| Release | : 1960 |
| Genre | : |
| ISBN | : |
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A Search for the Rare Decay $B\rightarrow\gamma\gamma$
| Author | : |
| Publisher | : |
| Total Pages | : 13 |
| Release | : 2011 |
| Genre | : |
| ISBN | : |
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We report the result of a search for the rare decay B° 2![gamma][gamma] in 426 fb−1 of data, corresponding to 226 million B°{bar B}° pairs, collected on the [Upsilon](4S) resonance at the PEP-II asymmetric-energy ee− collider using the BABAR detector. We use a maximum likelihood fit to extract the signal yield and observe 2112{sup +13} signal events with a statistical signficance of 1.9 [sigma]. This corresponds to a branching fraction [Beta](B° 2![gamma][gamma]) = (1.7 ± 1.1(stat.) ± 0.2(syst.)) x 10−7. Based on this result, we set a 90% confidence level upper limit of [Beta](B° 2![gamma][gamma])
A Search for the Rare Decay B0 2![gamma][gamma].
| Author | : |
| Publisher | : |
| Total Pages | : 197 |
| Release | : 2010 |
| Genre | : |
| ISBN | : |
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This thesis describes a search for the rare radiative decay B0 → [gamma][gamma], where the charged congugate mode is implied throughout. These decays are highly suppressed in the Standard Model where the branching fraction is expected to be of order 10-8. In some new physics scenarios this could be enhanced by up to an order of magnitude to 10-7. Therefore an observation of a significant signal above the Standard Model prediction could be a sign of new physics.
