594 research outputs found
Light Mesons from Heavy B and Hyperon Decays
Decays of heavy mesons and of heavy hyperons are used to provide tests of the
standard model and information about new mixing schemes for the and
mesons. These include the two body decays and
, and , semileptonic decays, and properties of radially
excited mesons.Comment: Four pages. Talk given at the Fifth International Conference on
Hyperons, Charm and Beauty Hadrons, Vancouver, BC, Canada, July 25-29, 200
A New State of Baryonium
The recent discovery of a narrow resonance in the decay is described as a zero baryon number,
``deuteron-like singlet '' state. The difference in binding energy
of the deuteron (-2.225 MeV) and of the new state (-17.5 MeV) can be accounted
for in a simple potential model with a confining
interaction.Comment: 7 page
Emotion words and categories: evidence from lexical decision
We examined the categorical nature of emotion word recognition. Positive, negative, and neutral words were presented in lexical decision tasks. Word frequency was additionally manipulated. In Experiment 1, "positive" and "negative" categories of words were implicitly indicated by the blocked design employed. A significant emotion–frequency interaction was obtained, replicating past research. While positive words consistently elicited faster responses than neutral words, only low frequency negative words demonstrated a similar advantage. In Experiments 2a and 2b, explicit categories ("positive," "negative," and "household" items) were specified to participants. Positive words again elicited faster responses than did neutral words. Responses to negative words, however, were no different than those to neutral words, regardless of their frequency. The overall pattern of effects indicates that positive words are always facilitated, frequency plays a greater role in the recognition of negative words, and a "negative" category represents a somewhat disparate set of emotions. These results support the notion that emotion word processing may be moderated by distinct systems
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