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Minimum entropy production of neutrino radiation in the steady state

Description: A thermodynamical minimum principle valid for photon radiation is shown to hold for arbitrary geometries. It is successfully extended to neutrinos, in the zero mass and chemical potential case, following a parallel development of photon and neutrino statistics. This minimum principle stems more from that of Planck than that of classical Onsager-Prigogine irreversible thermodynamics. Its extension from bosons to fermions suggests that it may have a still wider validity. 14 refs.
Date: August 1, 1997
Creator: Essex, C. & Kennedy, D.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Scaling deviations for neutrino reactions in aysmptotically free field theories

Description: Several aspects of deep inelastic neutrino scattering are discussed in the framework of asymptotically free field theories. We first consider the frowth behavior of the total cross sections at large energies. Because of the deviations from strict scaling which are characteristic of such theories the growth need not be linear. However, upper and lower bounds are established which rather closely bracket a linear growth. We next consider in more detail the expected pattern of scaling deviation for… more
Date: November 1, 1974
Creator: Zee, A.; Wilczek, F. & Treiman, S.B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Neutrino cross sections on {sup 12}C

Description: Measurements of the charged current reactions {sup 12}C({ital v}{sub e},e{sup -}){sup 12}N and {sup 12}C({ital v}{sub {mu}},{mu}{sup - }){sup 12}N for inclusive transitions to {sup 12}N excited states and exclusive transitions to {sup 12}N , are presented. The data presented represent 3 years of running of the LSND experiments and are from runs in 1993, 1994, and 1995 and total to 14772 Coulombs of protons on target. The {ital v}{sub e} scattering and {ital v}{sub {mu}{sup -}} exclusive scatter… more
Date: October 1, 1996
Creator: Sandberg, V.D. & Collaboration, LSND
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Present status of SAGE

Description: A radiochemical {sup 71}Ga-{sup 71}Ge experiment to determine the primary flux of neutrinos from the Sun began measurements of the solar neutrino flux at the Baksan Neutrino Observatory in 1990. The number of {sup 71}Ge atoms extracted from 30 tons of gallium in 1990 and from 57 tons of gallium in 1991 was measured in twelve runs during the period of January 1990 to December 1991. The combined 1990 and 1991 data sets give a value of 58+17/{minus}24 (stat) {plus_minus} 14 (syst) SNU. This is to … more
Date: June 1, 1993
Creator: Bowles, T. J. & Collaboration, For the SAGE
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Observation of muonless neutrino-induced inelastic interactions

Description: The observation of inelastic interactions induced by high energy neutrinos and antineutrinos in which no muon is observed in the final state is reported. A possible, but by no means unique, interpretation of this effect is the existence of a neutral weak current. (auth)
Date: January 1, 1973
Creator: Benvenuti, A.; Cheng, D.C.; Cline, D.; Ford, W.T.; Imlay, R.; Ling, T.Y. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Neutrino Process and Neutrino R-Process

Description: Almost all of the 3 {center_dot} 10{sup 53} ergs released in a core-collapse supernova is carried off by the neutrinos emitted from the cooling neutron star. These neutrinos can excite nuclei in the mantle of the star by their neutral and charged current reactions, leading to the spallation of nucleonsa and {alpha}-particles and the production of new daughter nuclei, I will describe rather detailed network calculations that suggest this ``neutrino process`` is an important nucleosynthesis mecha… more
Date: December 31, 1991
Creator: Haxton, W. C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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A letter of intent for a neutrino scattering experiment on the booster neutrino meanline: FINeSSE

Description: The experiment described in this Letter of Intent provides a decisive measurement of {Delta}s, the spin of the nucleon carried by strange quarks. This is crucial as, after more than thirty years of study, the spin contribution of strange quarks to the nucleon is still not understood. The interpretation of {Delta}s measurements from inclusive Deep Inelastic Scattering (DIS) experiments using charged leptons suffers from two questionable techniques; an assumption of SU(3)-flavor symmetry, and an … more
Date: March 1, 2005
Creator: Fleming, B.T.; Tayloe, R. & U., /Indiana U. /Yale
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Neutrino radiation hazards: A paper tiger

Description: Neutrinos are present in the natural environment due to terrestrial, solar, and cosmic sources and are also produced at accelerators both incidentally and intentionally as part of physics research programs. Progress in fundamental physics research has led to the creation of beams of neutrinos of ever-increasing intensity and/or energy. The large size and cost associated with these beams attracts, and indeed requires, public interest, support, and some understanding of the `exotic` particles pro… more
Date: September 1, 1996
Creator: Cossairt, J. D.; Grossman, N. L. & Marshall, E. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Core-collapse supernovae and nucleosynthesis

Description: I discuss some of the physics that governs the collapse and explosion of a massive star, including issues such as lepton number losses in the infall stage and neutrino heating and convection following the core bounce. I review recent work on the neutrino process and the r-process, describing how the nucleosynthesis depends on the explosion mechanism. Some of the interesting possibilities for oscillations of closure mass {nu}{sub {tau}}s are discussed, along with their signatures in terrestrial … more
Date: December 1, 1994
Creator: Haxton, W. C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Experimental investigations in particle physics at intermediate energies. Performance report for December 1, 1990--November 30, 1991

Description: The major elements of this project continues to be on fundamental symmetries and parameters of the Standard Model. The projects in the current period have been BNL E791 (a search for the decay K{sub L}{sup 0} {yields} {mu}e, which would violate the rule of separate lepton number conservation), test of an upgrade proposal (E871), and LSND, a neutrino experiment at LAMPF. For E791, data taking was completed in June 1990, and preliminary results are now available for the decays K{sub L}{sup 0} {yi… more
Date: September 30, 1991
Creator: Auerbach, L. B.; Highland, V. L.; Martoff, C. J.; McFarlane, K. W.; Guss, C. & Kettell, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Nuclear astrophysics

Description: The problem of core-collapse supernovae is used to illustrate the many connections between nuclear astrophysics and the problems nuclear physicists study in terrestrial laboratories. Efforts to better understand the collapse and mantle ejection are also motivated by a variety of interdisciplinary issues in nuclear, particle, and astrophysics, including galactic chemical evolution, neutrino masses and mixing, and stellar cooling by the emission of new particles. The current status of theory and … more
Date: December 31, 1992
Creator: Haxton, W. C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Results from the Soviet-American gallium experiment

Description: A radiochemical {sup 71}Ga-{sup 71}Ge experiment to determine the primary flux of neutrinos from the Sun has begun operation at the Baksan Neutrino Observatory. The number of {sup 71}Ge atoms extracted from thirty tons of gallium was measured in five runs during the period of January to July 1990. Assuming that the extraction efficiency for {sup 71}Ge atoms produced by solar neutrinos is the same as from natural Ge carrier, we observed the capture rate to be 20 + 15/{minus}20 (stat) {plus_minus… more
Date: December 31, 1991
Creator: Abazov, A. I.; Anosov, O. L.; Faizov, E. L.; Gavrin, V. N.; Kalikhov, A. V.; Knodel, T. V. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Measurement of the reaction C({nu}{sub mu},{mu}{sup {minus}})X near threshold

Description: Using the decay-in-flight {nu}{sub {mu}} beam from the Los Alamos Meson Physics Facility and a massive liquid scintillator neutrino detector (LSND), the reaction C({nu}{sub {mu}},{mu}{sup {minus}})X has been studied near threshold. Preliminary results for the visible energy distribution of the final state and the flux integrated cross section are presented and compared with the results of several nuclear model calculations.
Date: December 31, 1994
Creator: Federspiel, F. J. & Collaboration, LSND
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Feasibility of performing neutrino experiments at an intense source of strangeness

Description: Several very important low energy neutrino experiments have been identified and discussed by Kayser and Rosen in these proceedings. We address the possibility of performing some of these experiments in the environment of a kaon factory. To carry out specific analyses, we draw upon the design of existing BNL detectors, the design of experiments that are proposed for an 800 MeV proton driven facility at Los Alamos, and the use of the code NUBEAM developed at CERN. Since in most cases we have not … more
Date: January 1, 1983
Creator: Carlini, R. D. & Stephenson, G. J. Jr.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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