6,481 research outputs found
Recent results on Charm Physics from Fermilab
New high statistics, high resolution fixed target experiments producing
- fully reconstructed charm particles are allowing a detailed
study of the charm sector. Recent results on charm quark production from
Fermilab fixed target experiments E791, SELEX and FOCUS are presented.Comment: 27 pages, corrected some typographical errors. To appear Proc. VII
Mexican Workshop of Particles and Field, Merida Yuc. M\'ex., Nov. 199
Asymmetry studies in Lambda 0/Lambda 0-bar, Xi-/Xi+ and Omega-/Omega+ production
We present a study on hyperon/anti-hyperon production asymmetries in the
framework of the recombination model. The production asymmetries for Lambda
0/Lambda 0-bar, Xi-/Xi+ and Omega-/Omega+ are studied as a function of x_F.
Predictions of the model are compared to preliminary data on
hyperon/anti-hyperon production asymmetries in 500 GeV/c pi- p interactions
from the Fermilab E791 experiment. The model predicts a growing asymmetry with
the number of valence quarks shared by the target and the produced hyperons in
the x_F < 0 region. In the positive x_F region, the model predicts constant
asymmetries for Lambda 0/Lambda 0-bar and Omega-/Omega+ production and a
growing asymmetry with x_F for Xi-/Xi+. We found a qualitatively good agreement
between the model predictions and data, showing that recombination is a
competitive mechanism in the hadronization process.Comment: One reference correcte
Portuguese honey consummer's attitudes and characterization
Este estudo tem como principais objectivos determinar o perfil do consumidor do mel em Portugal e as suas atitudes face ao produto, à produção e ao consumo de mel.
Para esse efeito foi elaborado e aplicado um questionário directo online. Este questionário foi aplicado uma amostra representativa de 1037 indivĂduos. Foi efectuado um prĂ©-teste do inquĂ©rito com cerca de 30 inquiridos.
Foram ainda analisadas as atitudes face ao produto, o apoio Ă apicultura, o foco apĂcola e as normas subjectivas sobre a produção e ao consumo de mel efectuado de acordo com da Teoria do Comportamento Planeado (TCP) de Ajzen.The aim of this study is to evaluate the honey consumer’s profile in Portugal and their attitudes towards the product, the production and consumption of honey.
For this purpose was developed and applied a questionnaire directly online. This questionnaire was completed by a representative sample of 1037 persons. It made a pre-test review with 30 respondents.
We also analyzed the attitudes towards the product, supporting beekeeping, beekeeping focus and subjective norms on production and consumption of honey made in accordance with the Theory of Planned Behaviour (TCP) of Ajzen
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