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Neutrino mixing and oscillation in a grand unified field theory SO(10)

Description: The investigation shows that it is very difficult to achieve neutrino mixing of other than the V/sub ..mu../-..nu../sub tau/ type in any minimal SO(10) model in which neutrino masses are generated by the Gell-Mann-Ramond-Slansky mechanism, because of the severe constraints placed on the mass matrix by quark phenomenology.
Date: January 1, 1980
Creator: Tanaka, K.
Partner: UNT Libraries Government Documents Department

Fluid analog in high energy collisions

Description: The generating functions which represent the p p data from 50 to 303 GeV/ c are used as analog grand partition functions and notions of analog pressure, specific volume, equation of state and critical point are explored. Also l-plane singularities are disdussed in this connection. (auth)
Date: January 1, 1973
Creator: Tanaka, K. & Ueda, Y.
Partner: UNT Libraries Government Documents Department

Functional design criteria additional high-level waste handling and storage facilities

Description: Four one-million-gallon underground tanks will be constructed for safe and reliable containment and storage of high-level radioactive wastes. Transfer facilities and encased, insulated, and heat traced piping will provide transport connections to the existing evaporator-crystallizer and storage tank systems. Flushing facilities and associated utilities will be provided for tank farm operation. The tank, pumping, and ventilation equipment and controls will be provided with instrumentation and alarms. Instrumentation will monitor the waste and facilities to detect high temperatures, waste levels, radiation, and process leakages. Gaseous radioactive containment will be provided by the high efficiency ventilation filtration. The tank farm facilities will provide personnel radiation protection.
Date: March 1, 1976
Creator: Tanaka, K.H.
Partner: UNT Libraries Government Documents Department

Functional design criteria additional high-level waste storage facilities

Description: Six one-million-gallon double shell waste storage tanks will be constructed for safe and reliable containment and storage of high-level radioactive wastes. The design and safety features of these tanks are discussed including: architecture; structure; primary and secondary tanks; reinforced concrete tank; tank dome penetrations; processing and transfer facilities; piping; auxiliary equipment; pumps; slurry distributors; and ventilation. (DC)
Date: June 30, 1975
Creator: Tanaka, K.H.
Partner: UNT Libraries Government Documents Department

B Plant ion exchange feed line leak

Description: >One of the objectives of the Waste Management Program is to separate the long-lived heat emitter /aup 137/Cs from the bulk of the high-level Iiquid wastes. This separation is accomplished by the ion exchange process in the 221-B Building. Interim storage of the cesium is in solution as a nitrate. The feed for the B Plant cesinm ion exchange process is pumped from the lag storage tank, 105-C, through a pipeline and several diversion boxes to the 221-B Building. On December 19, 1969, a leak was discovered near the 241-C-152 diversion box in the section of this line, V-122, from the 105-C tank. Although the leak represented a loss of feed for the processing of /sup 137/Cs, more important was the consequence of environmental contmination to the soil from the line leak. For this reason, an investigation was made to estblish the extent of the radioactivity spread. The results of a well drilling operation undertaken to define the boundary and to estimate the extent of the leak are summarized. (CR)
Date: January 25, 1971
Creator: Tanaka, K.H.
Partner: UNT Libraries Government Documents Department

Masses and mixing angles in SU(5) gauge model

Description: Georgi and Jarlskog mass relations m/sub ..mu../m/sub e/ = 9m/sub s//m/sub d/, m/sub b/ = m/sub tau/ are obtained above the grand unification mass M = 10/sup 15/ GeV with two approx. 5's and one approx. 45 Higgs representations of SU(5) and a discrete symmetry. In the lowest order, the Kobayashi-Maskawa angles are found to be s/sub 2/ = -(m/sub c//m/sub t/) /sup 1/2/ and s/sub 3/ = -(m/sub u//m/sub t/) /sup 1/2//s/sub 1/, where s/sub 1/ is the sine of the Cabibbo angle. The CP violation is considered, and the b quark decays predominantly into c quarks with lifetime of tau/sub b/ approx. equal to 10/sup -13/ s for m/sub t/ = 25 GeV.
Date: January 1, 1979
Creator: Nandi, S. & Tanaka, K.
Partner: UNT Libraries Government Documents Department

Mixing angles in SU(2)/sub L/ x U(1) gauge model

Description: Exact expressions for the mixing parameters are obtained in terms of mass ratios in the standard Weinberg-Salam model with permutation symmetry S/sub 3/ for six quarks. The CP-violating phase is ignored, and there are no arbitrary parameters except for the quark masses. In the lowest order, the angles defined by Kobayashi-Maskawa are sin theta/sub 1/ = sin theta/sub c/ = (m/sub d//m/sub d/ + m/sub s/)/sup 1/2/, sin theta/sub 3/ = -sin theta/sub 3/ = -m/sup 2//sub s//m/sup 2//sub b/, and m/sub t/m/sub s/ greater than or equal to m/sub c/m/sub b/ = 7.2 GeV/sup 2/ or m/sub t/ greater than or equal to 24 GeV for m/sub s/ = 0.3 GeV.
Date: January 1, 1979
Creator: Nandi, S. & Tanaka, K.
Partner: UNT Libraries Government Documents Department

Mixing angles and CP violation in SU(2)/sub L/ x U(1) gauge model

Description: Expressions for the mixing parameters are obtained in terms of mass ratios in the standard Weinberg-Salam model with permutation symmetry S/sub 3/ for six quarks. The CP-violating phase, delta, is taken into account, and there are no arbitrary parameters except for the quark masses. In the lowest order, the angles defined by Kobayashi-Maskawa are sin theta/sub 1/ approx. = (m/sub d//m sub d/ + m/sub s/)/sup 1/2, sin theta/sub 2/ approx. = -((m/sub s//m/sub b/)/sup 2/ - (m/sub c//m/sub t/)/sup 2/)/sup 1/2/, and sin theta/sub 3/ = (m/sub s//m/sub b/)/sup 2//cos theta/sub 1/. The model can be consistent with the observed magnitude of CP violation. The b quarks decay predominantly into c quarks with lifetime of tau/sub b/ approx. = 10/sup -11/ s.
Date: January 1, 1979
Creator: Nandi, S. & Tanaka, K.
Partner: UNT Libraries Government Documents Department

Cabibbo angle in a six quark gauge model. [Mass matrices]

Description: General structures of the mass matrices resulting from a quark-Higgs Yukawa interaction are discussed. It is assumed that there are two sets of Higgs bosons in a six quark SU(2)/sub L/ x SU(2)/sub R/ x U(1) gauge model and require that the interaction be invariant under a general discrete symmetry. Three physically acceptable mass matrices are found including those of Fritzsch, and Hagiwara et al. Special attention is paid to the phase of the vacuum expectation value of the Higgs boson, which is related to CP violation. A mass relation among six quarks, m/sub t/ = m/sub b/ ..sqrt.. m/sub u/m/sub c//m/sub d/m/sub s/ is obtained for the latter models. No new mass matrices are found when there are three sets of Higgs bosons.
Date: January 1, 1978
Creator: Kitazoe, T. & Tanaka, K.
Partner: UNT Libraries Government Documents Department

Neutrino mixing in a grand unified theory

Description: Neutrino mixing in a grand unified theory in which the neutrino mass matrix is determined by the Gell-Mann-Ramond-Slansky mechanism was investigated. With an arbitrary real right-handed Majorana mass matrix which incorporates three neutrino mass scales, the effects of the up-quark mass matrix are found to be dominant and as a result no significant mixing of ..nu../sub e/ occurs, while ..nu../sub ..mu../ - ..nu../sub ..gamma../ mixing can be substantial.
Date: January 1, 1980
Creator: Milton, K. & Tanaka, K.
Partner: UNT Libraries Government Documents Department

Heavy quark production by neutrinos and antineutrinos. [Quark-parton model, SU(2) x SU(2) x U(1) gauge group, 200 GeV]

Description: The rate for producing t- and b-quarks in, respectively, neutrino and antineutrino interactions with nucleons are estimated. Experimental quark parton distribution functions, SU(2) x SU(2) x U(1) gauge group mixing angles, and threshold suppression through rescaling are used in the calculation. The ratios to total cross sections of b-quark production by anti nu, R/sub b//sup anti nu/, and t-quark production by ..nu.., R/sub t//sup nu/, are, respectively, R/sub b//sup anti nu/ approximately equal to 10/sup -4/ and R/sub t//sup nu/ approximately equal to 10/sup -5/ for an incident energy of 200 GeV. 13 references.
Date: January 1, 1979
Creator: Scott, D.M. & Tanaka, K.
Partner: UNT Libraries Government Documents Department

The Effect of Temperature on the Yield Strength of the Polycrystalline Hexagonal Ag-Al Intermetallic Phase

Description: The effect of temperature on the yield strength of the polycrystalline hexagonal Ag--Al intermetallic phase was investigated over the temperature range 77 to 775 deg K. It was found that the curve for yield stress vs temperature for both polycrystalline Ag--33 at.% Al specimens that were heavily cold-worked prior to deformation and those that were recrystallized prior to deformation was parallel to that for prismatic slip in single crystals. Increase of the percent Al in the specimens resulted in an abrupt decrease in the ductility at a composition of about 37 at.% Al. This decrease in ductility was attributed to precipitates in the grain boundaries. (auth)
Date: December 18, 1961
Creator: Tanaka, K. & Mote, J.D.
Partner: UNT Libraries Government Documents Department

Energy Gaps in the Failed High-Tc Superconductor La_1.875Ba_0.125Cu_O4

Description: A central issue on high-T{sub c} superconductivity is the nature of the normal-state gap (pseudogap) in the underdoped regime and its relationship with superconductivity. Despite persistent efforts, theoretical ideas for the pseudogap evolve around fluctuating superconductivity, competing order and spectral weight suppression due to many-body effects. Recently, while some experiments in the superconducting state indicate a distinction between the superconducting gap and pseudogap, others in the normal state, either by extrapolation from high-temperature data or directly from La{sub 1.875}Ba{sub 0.125}CuO{sub 4} (LBCO-1/8) at low temperature, suggest the ground-state pseudogap is a single gap of d-wave form. Here we report angle-resolved photoemission (ARPES) data from LBCO-1/8, collected with improved experimental conditions, that reveal the ground-state pseudogap has a pronounced deviation from the simple d-wave form. It contains two distinct components: a d-wave component within an extended region around the node and the other abruptly enhanced close to the antinode, pointing to a dual nature of the pseudogap in this failed high-T{sub c} superconductor which involves a possible precursor pairing energy scale around the node and another of different but unknown origin near the antinode.
Date: August 19, 2011
Creator: Tanaka, K.
Partner: UNT Libraries Government Documents Department

Phenomenological bounds in inclusive neutrino interactions

Description: Using expressions for the $nu$ and anti $nu$ charged and neutral current cross sections and the electroproduction structure function integral and positivity requirements of the sea contribution, bounds are obtained on sigma/sup anti nu N//sigma/sup anti nu N/, and sigma/sup anti nu N//sub nc//sigma/sup nu N/ /sub nc/ in the standard model. A bound on sigma/sup anti nu N//sigma/sup nu N/ obtained with a V + A term anti p'$gamma$/sub mu/(1-$gamma$$sub 5$)n is used to rule out such a term in the current. A plot of sigma/sup nu N//sub nc/ + sigma/ sup anti nu N//sub nc/ versus sigma/sup nu N//sub nc/ - sigma/sup anti nu N//sub nc/ is introduced to analyze the neutral current data. A new relation connecting moments of y and y distributions at a particular point y/sub n/ for $nu$ and anti $nu$ interactions is found. The results do not depend on the neutral current data. (auth)
Date: January 1, 1975
Creator: Aubrecht, G.J. II; Takasugi, E. & Tanaka, K.
Partner: UNT Libraries Government Documents Department

High energy physics studies. Progress report. Part I. Experimental program. Part II. Theoretical program. [Summaries of research activities at Ohio State University]

Description: Experimental Program: assembly of an experiment as Fermilab E-531 to measure decay lifetimes, with tagged emulsion of charmed particles produced by high energy neutrinos was finished, and data taking now is in progress. An experiment to measure prompt neutrino production at Fermilab, E-613, was approved and detailed design of it is continuing. Search for parity violation in scattering of polarized protons, an experiment E-446-ZGS at ANL, was performed with the sensitivity of 10/sup -6/ for detection of that process and yielded null results. Another run with improved sensitivity of 10/sup -7/ is in preparation. Data analysis of the neutrino experiment E-310 at Fermilab will continue. Trimuon events, a new discovery, were identified in those data. Analysis of data on meson production from experiments performed at the ZGS--ANL, E-397, E-420 and E-428, with charged and neutral spectrometer will continue. A new relatively broad resonance (T approx. 70 MeV) with quantum numbers IJ/sup P/ = 00/sup -1/ was discovered in the data from E-397. Analysis of beta decay of polarized ..sigma../sup -/ hyperons is in progress. Participation in the design of the experimental areas for the Isabelle colliding proton beam accelerator will continue. Theoretical Program: topics which will be investigated in the coming year are: the instanton-anti-instanton QCD gauge fields, discrete symmetries which may determine quark masses in the SU(2) x U(1) model, calculation of charmed meson production in e/sup +/e/sup -/ collisions and formation of gluon jets, Higgs boson production in pp collisions, calculation of Higgs boson mass in terms of vector boson mass, study of Lagrangians with gauge and Higgs scalar fields, investigation of Faddeev--Popov determinants as related to quantum chromodynamics, a study of quantum flavor dynamics and anomalies in the axial vector Ward identity and a study of super symmetry as a part of a realistic model of leptonic ...
Date: January 1, 1978
Creator: Romanowski, T.A.; Tanaka, K. & Wada, W.W.
Partner: UNT Libraries Government Documents Department