Author
A. D. McGuire
Bio: A. D. McGuire is an academic researcher from Los Alamos National Laboratory. The author has contributed to research in topics: Neutrino & Neutron. The author has an hindex of 4, co-authored 4 publications receiving 946 citations.
Topics: Neutrino, Neutron, Beta particle, Nucleon, Muon
Papers
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768 citations
TL;DR: In this paper, the antineutrino absorption reaction was observed in two 200-liter water targets each placed between large liquid scintillation detectors and located near a powerful production fission reactor.
Abstract: The antineutrino absorption reaction $p(\overline{\ensuremath{
u}}, {\ensuremath{\beta}}^{+})n$ was observed in two 200-liter water targets each placed between large liquid scintillation detectors and located near a powerful production fission reactor in an antineutrino flux of 1.2\ifmmode\times\else\texttimes\fi{}${10}^{13}$ ${\mathrm{cm}}^{\ensuremath{-}2}$ ${\mathrm{sec}}^{\ensuremath{-}1}$. The signal, a delayed-coincidence event consisting of the annihilation of the positron followed by the capture of the neutron in cadmium which was dissolved in the water target, was subjected to a variety of tests. These tests demonstrated that reactor-associated events occured at the rate of 3.0 ${\mathrm{hr}}^{\ensuremath{-}1}$ for both targets taken together, consistent with expectations; the first pulse of the pair was due to a positron; the second to a neutron; the signal dependended on the presence of protons in the target; and the signal was not due to neutrons or gamma rays from the reactor.
99 citations
TL;DR: In this article, an experimental investigation of the third leg of the triangle, the muon-nucleon interaction, was studied, and the probability per second of absorption resulting in the formation of B/sup 12/ in the ground state was measured and found to be 9050 plus or minus 950 sec/sup -1/.
Abstract: It is known that there is a strong similarity between the electron- nucleon and electron-muon weak interactions. This paper is a repont on an experimental investigation of the third leg of the triangle, the muon-nucleon interaction. The absorption of negative cosmic-ray muons stopped in C/sup 12/ was studied, and the probability per second of absorption resulting in the formation of B/sup 12/ in the ground state was measured and found to be 9050 plus or minus 950 sec/sup -1/. This is compared to the known rate of BETA decay of B/sup 12/ to the ground state of C/sup 12/, 33.2 plus or minus 0.65 sec/sup -1/. The ratio of the rates is 273 plus or minus 29. In the allowed approximations the nuclear matrix elements for the two processes are the same, and the ratio of the rates can be calculated in terms of the ratfo of the coupling constants without assuming a nuclear model. The short wavelength of the neutrino emitted in mu absorption (13 fermis) causes forbidden matrix elements to make an important contribution to the mu -absorption rate, so that the theoretical prediction fs dependent on the nuclear model. Within the uncertainties of the calculations the electron-nucleonmore » and muon-nucleon axial vector coupling constants are the same. (auth)« less
9 citations
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TL;DR: This biennial Review summarizes much of particle physics, using data from previous editions.
12,798 citations
1,177 citations
01 Jan 1982
TL;DR: In this paper, the authors present a model for accelerating a particle to >100 TeV using cosmic rays and neutrino-induced muons, which they call cosmic ray showers.
Abstract: Preface 1. Cosmic rays 2. Particle physics 3. Cascade equations 4. Hadrons and photons 5. Accelerator data 6. Muons 7. Neutrinos 8. Neutrino-induced muons 9. Propagation 10. Gamma rays and antiprotons 11. Acceleration 12. Acceleration to >100 TeV 13. Astrophysical beam dumps 14. Air showers 15. Electromagnetic cascades 16. Cosmic ray showers 17. Simulation techniques References Index.
965 citations
TL;DR: In this paper, the cosmological implications of neutrinos are reviewed at a different level of scrutiny, including neutrino mass, neutrini mass limits and their effect on primordial nucleosynthesis.
537 citations
TL;DR: The design, production, and calibration of the IceCube digital optical module (DOM), the cable systems, computing hardware, and the methodology for drilling and deployment are described, including the online triggering and data filtering systems that select candidate neutrino and cosmic ray events for analysis.
Abstract: The IceCube Neutrino Observatory is a cubic-kilometer-scale high-energy neutrino detector built into the ice at the South Pole. Construction of IceCube, the largest neutrino detector built to date, was completed in 2011 and enabled the discovery of high-energy astrophysical neutrinos. We describe here the design, production, and calibration of the IceCube digital optical module (DOM), the cable systems, computing hardware, and our methodology for drilling and deployment. We also describe the online triggering and data filtering systems that select candidate neutrino and cosmic ray events for analysis. Due to a rigorous pre-deployment protocol, 98.4% of the DOMs in the deep ice are operating and collecting data. IceCube routinely achieves a detector uptime of 99% by emphasizing software stability and monitoring. Detector operations have been stable since construction was completed, and the detector is expected to operate at least until the end of the next decade.
457 citations