52 research outputs found
Pion and Sigma Polarizabilities and Radiative Transitions
Fermilab E781 plans measurements of gamma-Sigma and -pion
interactions using a 600 GeV beam of Sigmas and pions, and a virtual photon
target. Pion polarizabilities and radiative transitions will be measured in
this experiment. The former can test a precise prediction of chiral symmetry;
the latter for a_1(1260) ----> pi + gamma is important for understanding the
polarizability. The experiment also measures polarizabilities and radiative
transitions for Sigma hyperons. The polarizabilities can test predictions of
baryon chiral perturbation theory. The radiative transitions to the
Sigma*(1385) provide a measure of the magnetic moment of the s-quark. Previous
experimental and theoretical results for gamma-pi and gamma-Sigma interactions
are given. The E781 experiment is described.Comment: 13 pages text (tex), Tel Aviv U. Preprint TAUP 2204-94, uses
Springer-Verlag TEX macro package lecproc.cmm (appended at end of tex file,
following \byebye), which requires extracting lecproc.cmm and putting this
file in your directory in addition to the tex file (mmcd.tex) before tex
processing. lecproc.cmm should be used following instructions and guidelines
available from Springer-Verlag. Submitted to the Proceedings of Workshop on
Chiral Dynamics, Massachusetts Institute of Technology, July 1994, Eds. A.
Bernstein, B. Holstein. Replaced Oct. 4 to add TAUP preprint number. Replaced
Oct. 12 to correct Pb target thickness from 1.3% interaction to 0.3
International genome-wide meta-analysis identifies new primary biliary cirrhosis risk loci and targetable pathogenic pathways
Charge-dependent flow and the search for the chiral magnetic wave in Pb-Pb collisions at root s(NN)=2.76 TeV
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COINCIDENT ORIENTATION OF OBJECTS AND VIEWPOINT-DEPENDENCE IN SCENE RECOGNITION
Viewpoint-dependence is a well-known phenomenon in which participants' spatial memory is better for previously experienced points of view than for novel ones. In the current study, partial-scene-recognition was used to examine the effect of coincident orientation of all the objects on viewpoint-dependence in spatial memory. When objects in scenes had no clear orientations (e.g., balls), participants' recognition of experienced directions was better than that of novel ones, indicating that there was viewpoint-dependence. However, when the objects in scenes were toy bears with clear orientations, the coincident orientation of objects (315 degrees), which was not experienced, shared the advantage of the experienced direction (0 degrees), and participants were equally likely to choose either direction when reconstructing the spatial representation in memory. These findings suggest that coincident orientation of objects may affect egocentric representations in spatial memory
Novices Assigned Nutraceuticals: Matching Subject Strengths Uncovered by Same-Day, Simple-Strategy Searches across EBSCO Versions of Four Major Databases to Different Undergraduate Science Majors
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