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Searches For Massive Neutrino Emission In 14c Beta And 55fe Electron Capture Decays
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Book Synopsis Searches for Massive Neutrino Emission in /+14\C Beta and /+55\Fe Electron-capture Decays by : Fred Eberhardt Wietfeldt
Download or read book Searches for Massive Neutrino Emission in /+14\C Beta and /+55\Fe Electron-capture Decays written by Fred Eberhardt Wietfeldt and published by . This book was released on 1994 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Searches for Massive Neutrino Emission in 14C Beta and 55Fe Electron-capture Decays by :
Download or read book Searches for Massive Neutrino Emission in 14C Beta and 55Fe Electron-capture Decays written by and published by . This book was released on 1994 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1985 Simpson reported evidence for the emission of a 17 keV mass neutrino in a small fraction of tritium beta decays. An experimental controversy ensued in which a number of both positive and negative results were reported. The beta spectrum of 14C was collected in a unique 14C-doped planar germanium detector and a distortion was observed that initially confirmed Simpson's result. Further tests linked this distortion to a splitting of the collected charge between the central detector and the surrounding guard ring in a fraction of the events. A second 14C measurement showed no evidence for emission of a 17 keV mass neutrino. In a related experiment, a high statistics electron-capture internal-bremsstrahlung photon spectrum of 55Fe was collected with a coaxial germanium detector. A local search for departures from a smooth shape near the endpoint was performed, using a second-derivative technique. An upper limit of 0.65% (95% C.L.) for the mixing Of a neutrino in the mass range 5--25 keV was established. The upper limit on the mixing of a 17 keV mass neutrino was 0.14% (95% C.L.).
Book Synopsis Searches for Massive Neutrino Emission in Sup 14C Beta and Sup 55Fe Electron-capture Decays by :
Download or read book Searches for Massive Neutrino Emission in Sup 14C Beta and Sup 55Fe Electron-capture Decays written by and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1995 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evidence for the Emission of a Massive Neutrino in Nuclear Beta Decay by :
Download or read book Evidence for the Emission of a Massive Neutrino in Nuclear Beta Decay written by and published by . This book was released on 1990 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sixty Years of Double Beta Decay by : H. V. Klapdor-Kleingrothaus
Download or read book Sixty Years of Double Beta Decay written by H. V. Klapdor-Kleingrothaus and published by World Scientific. This book was released on 2001 with total page 1324 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nuclear double beta decay is one of the most promising tools for probing beyond-the-standard-model physics on beyond-accelerator energy scales. It is already now probing the TeV scale, on which new physics should manifest itself according to theoretical expectations. Only in the early 1980s was it known that double beta decay yields information on the Majorana mass of the exchanged neutrino. At present, the sharpest bound for the electron neutrino mass arises from this process. It is only in the last 10 years that the much more far-reaching potential of double beta decay has been discovered. Today, the potential of double beta decay includes a broad range of topics that are equally relevant to particle physics and astrophysics, such as masses of heavy neutrinos, of sneutrinos, as SUSY models, compositeness, leptoquarks, left-right symmetric models, and tests of Lorentz symmetry and equivalence principle in the neutrino sector. Double beta decay has become indispensable nowadays for solving the problem of the neutrino mass spectrum and the structure of the neutrino mass matrix OCo together with present and future solar and atmospheric neutrino oscillation experiments. Some future double beta experiments (like GENIUS) will be capable to be simultaneously neutrino observatories for double beta decay and low-energy solar neutrinos, and observatories for cold dark matter of ultimate sensitivity. This invaluable book outlines the development of double beta research from its beginnings until its most recent achievements, and also presents the outlook for its highly exciting future. Contents: Double Beta Decay OCo Historical Retrospective and Perspectives; Original Articles: From the Early Days until the Gauge Theory Era; The Nuclear Physics Side OCo Nuclear Matrix Elements; The Nuclear Physics Side OCo Nuclear Matrix Elements; Effective Neutrino Masses from Double Beta Decay, Neutrino Mass Models and Cosmological Parameters OCo Present Status and Prospects; Other Beyond Standard Model Physics: From SUSY and Leptoquarks to Compositeness and Quantum Foam; The Experimental Race: From the Late Eighties to the Future; The Future of Double Beta Decay; Appendices: Ten Years of HeidelbergOCoMoscow Experiment; The Potential Future OCo GENIUS. Readership: Particle physicists, nuclear physicists and astrophysicists."
Book Synopsis A Massive Neutrino in Nuclear Beta Decay by :
Download or read book A Massive Neutrino in Nuclear Beta Decay written by and published by . This book was released on 1992 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have continued our studies of the p-spectrum of [sup 14]C using a germanium detector doped with [sup 14]C. There is a feature in the [beta]-spectrum 17 keV below the endpoint which could be explained by the hypothesis that there is a heavy neutrino emitted in the [beta]-decay of [sup 14]C with a mass of 17[plus minus]1 keV and an emission probability of 1.26[plus minus]0.25%. However, we also have performed a high statistics measurement of the inner bremsstrahlung spectrum of [sup 55]Fe and find no indication of the emission of a 17-keV neutrino. We conclude that the origin of the kink'' that has been observed in some recent beta spectral measurements is not a neutrino.
Download or read book Measurements of Neutrino Mass written by and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Direct experimental information of neutrino mass as derived from the study of nuclear and elementary-particle weak decays is reviewed. Topics include tritium beta decay; the 3He-T mass difference; electron capture decay of 163Ho and 158Tb; and limits on massive neutrinos from cosmology. 38 references. (WHK).
Book Synopsis Sixty Years Of Double Beta Decay: From Nuclear Physics To Beyond Standard Model by : Hans Volker Klapdor-kleingrothaus
Download or read book Sixty Years Of Double Beta Decay: From Nuclear Physics To Beyond Standard Model written by Hans Volker Klapdor-kleingrothaus and published by World Scientific. This book was released on 2001-04-30 with total page 1313 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nuclear double beta decay is one of the most promising tools for probing beyond-the-standard-model physics on beyond-accelerator energy scales. It is already now probing the TeV scale, on which new physics should manifest itself according to theoretical expectations. Only in the early 1980s was it known that double beta decay yields information on the Majorana mass of the exchanged neutrino. At present, the sharpest bound for the electron neutrino mass arises from this process. It is only in the last 10 years that the much more far-reaching potential of double beta decay has been discovered. Today, the potential of double beta decay includes a broad range of topics that are equally relevant to particle physics and astrophysics, such as masses of heavy neutrinos, of sneutrinos, as SUSY models, compositeness, leptoquarks, left-right symmetric models, and tests of Lorentz symmetry and equivalence principle in the neutrino sector. Double beta decay has become indispensable nowadays for solving the problem of the neutrino mass spectrum and the structure of the neutrino mass matrix — together with present and future solar and atmospheric neutrino oscillation experiments. Some future double beta experiments (like GENIUS) will be capable to be simultaneously neutrino observatories for double beta decay and low-energy solar neutrinos, and observatories for cold dark matter of ultimate sensitivity.This invaluable book outlines the development of double beta research from its beginnings until its most recent achievements, and also presents the outlook for its highly exciting future.
Book Synopsis Neutrino Mass Experiments Using Electron Capture Β-decay by :
Download or read book Neutrino Mass Experiments Using Electron Capture Β-decay written by and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Search for 17-keV Neutrino Emission in the Beta-decay Spectrum of [35]S by : Gregg Evan Berman
Download or read book The Search for 17-keV Neutrino Emission in the Beta-decay Spectrum of [35]S written by Gregg Evan Berman and published by . This book was released on 1994 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Proposed Experiemental Test of the Neutrino Theory by : Luis W. Alvarez
Download or read book A Proposed Experiemental Test of the Neutrino Theory written by Luis W. Alvarez and published by . This book was released on 1949 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seventy Years Of Double Beta Decay: From Nuclear Physics To Beyond-standard-model Particle Physics by : Hans Volker Klapdor-kleingrothaus
Download or read book Seventy Years Of Double Beta Decay: From Nuclear Physics To Beyond-standard-model Particle Physics written by Hans Volker Klapdor-kleingrothaus and published by World Scientific. This book was released on 2010-03-25 with total page 1559 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last 20 years the disciplines of particle physics, astrophysics, nuclear physics and cosmology have grown together in an unprecedented way. A brilliant example is nuclear double beta decay, an extremely rare radioactive decay mode, which is one of the most exciting and important fields of research in particle physics at present and the flagship of non-accelerator particle physics.While already discussed in the 1930s, only in the 1980s was it understood that neutrinoless double beta decay can yield information on the Majorana mass of the neutrino, which has an impact on the structure of space-time. Today, double beta decay is indispensable for solving the problem of the neutrino mass spectrum and the structure of the neutrino mass matrix. The potential of double beta decay has also been extended such that it is now one of the most promising tools for probing beyond-the-standard-model particle physics, and gives access to energy scales beyond the potential of future accelerators.This book presents the breathtaking manner in which achievements in particle physics have been made from a nuclear physics process. Consisting of a 150-page highly factual overview of the field of double beta decay and a 1200-page collection of the most important original articles, the book outlines the development of double beta decay research — theoretical and experimental — from its humble beginnings until its most recent achievements, with its revolutionary consequences for the theory of particle physics. It further presents an outlook on the exciting future of the field.
Book Synopsis Searches for Massive Neutrinos in Nuclear Beta Decay by :
Download or read book Searches for Massive Neutrinos in Nuclear Beta Decay written by and published by . This book was released on 1992 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: The status of searches for massive neutrinos in nuclear beta decay is reviewed. The claim by an ITEP group that the electron antineutrino mass> 17eV has been disputed by all the subsequent experiments. Current measurements of the tritium beta spectrum limit m{sub {bar {nu}}e}
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1995 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Neutrino Mass Experiments Using Electron Capture#G B-decay by : Karsten Riisager
Download or read book Neutrino Mass Experiments Using Electron Capture#G B-decay written by Karsten Riisager and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Heavy Neutrino Emission in Nuclear Beta Decay Spectra by : Andrew Hime
Download or read book Heavy Neutrino Emission in Nuclear Beta Decay Spectra written by Andrew Hime and published by . This book was released on 1991 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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