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in subjects: "Dipole Moments"  
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Theoretical aspects of searches for time reversal violation in neutron transmission

Description: In nonleptonic nuclear processes one can probe time reversal violating interactions which conserve flavor. The authors discuss such interactions and their manifestations in the nucleon-nucleon interaction. Among nuclear physics experiments studies of the transmission of polarized epithermal neutrons appear to be the most sensitive tools to probe for time reversal violation in the nucleon-nucleon interaction. They consider what sensitivities are required for neutron transmission experiments to o… more
Date: September 1, 1996
Creator: Herczeg, P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

EEG and MEG source localization using recursively applied (RAP) MUSIC

Description: The multiple signal characterization (MUSIC) algorithm locates multiple asynchronous dipolar sources from electroencephalography (EEG) and magnetoencephalography (MEG) data. A signal subspace is estimated from the data, then the algorithm scans a single dipole model through a three-dimensional head volume and computes projections onto this subspace. To locate the sources, the user must search the head volume for local peaks in the projection metric. Here we describe a novel extension of this ap… more
Date: December 31, 1996
Creator: Mosher, J.C. & Leahy, R.M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Multi-source localization in MEG using simulated annealing: model order determination and parameter accuracy

Description: Empirical neuromagnetic studies have reported that multiple brain regions are active at single instants in time as well as across time intervals of interest. Determining the number of active regions, however, required a systematic search across increasing model orders using reduced chi-square measure of goodness-of-fit and multiple starting points within each model order assumed. Simulated annealing was recently proposed for noiseless biomagnetic data as an effective global minimizer. A modifie… more
Date: June 1, 1996
Creator: Huang, M.; Supek, S. & Aine, C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Spacetime geodesy and the LAGEOS-3 satellite experiment

Description: This is the final report of a three-year, Laboratory-Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). LAGEOS-1 is a dense spherical satellite whose tracking accuracy is such as to yield a medium-term inertial reference frame and that is used as an adjunct to more difficult and more data-intensive absolute frame measurements. LAGEOS-3, an identical satellite to be launched into an orbit complementary to that of LAGEOS-1, would experience an equal and… more
Date: April 1, 1996
Creator: Miller, W.A.; Chen, Kaiyou; Habib, S.; Kheyfets, A. & Holz, D.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Constraints on anomalous top quark couplings at the LHC

Description: Measurements of distributions associated with the pair production of top quarks at the LHC can be used to constrain (or observe) the anomalous chromomagnetic dipole moment(k) of the top. For example, using either the tt(bar) invariant mass or the Pt distribution of top we find that sensitivities to ; k; of order 0.05 are obtainable with 100 /fb of integrated luminosity. This is similar in magnitude to what can be obtained at a 500 GeV NLC with an integrated luminosity of 50 /fb through an exami… more
Date: September 1, 1996
Creator: Rizzo, T. G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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