3,658 research outputs found
FUZZY IDEALS AND FUZZY LIMIT STRUCTURES
Abstract. In this paper, we establish the theory of fuzzy ideal convergence on completely distributive lattices and give characterizations of some topological notions. We also study fuzzy limit structures and discuss the relationship between fuzzy co-topologies and fuzzy limit structures
Exclusive Decays and CP Violation in the General two-Higgs-doublet Model
Using the general factorization approach, we present a detailed investigation
for the branching ratios, CP asymmetries and longitudinal polarization
fractions in all charmless hadronic decays (except for the pure
annihilation processes) within the most general two-Higgs-doublet model with
spontaneous CP violation. It is seen that such a new physics model only has
very small contributions to the branching ratios and longitudinal polarization
fractions. However, as the model has rich CP-violating sources, it can lead to
significant effects on the CP asymmetries, especially on those of
penguin-dominated decay modes, which provides good signals for probing new
physics beyond the SM in the future B-physics experiments.Comment: 17 pages, no figure
Genetics and biology of vitamin D receptor polymorphisms
The vitamin D endocrine system is involved in a wide variety of biological processes including bone metabolism, modulation of the immune response, and regulation of cell proliferation and differentiation. Variations in this endocrine system have, thus, been linked to several common diseases, including osteoarthritis (OA), diabetes, cancer, cardiovascular disease, and tuberculosis. Evidence to support this pleiotropic character of vitamin D has included epidemiological studies on circulating vitamin D hormone levels, but also genetic epidemiological studies. Genetic studies provide excellent opportunities to link molecular insights with epidemiological data and have therefore gained much interest. DNA sequence variations, which occur frequently i
Heavy Quark Expansion in 1/\hat{m}_Q and |V_{cb}| Extraction
The dressed heavy quark mass \hat{m}_Q=m_Q+\bar{{\Lambda}} with
\bar{{\Lambda}} being the binding energy is introduced to characterize the
heavy hadrons containing a single heavy quark. A heavy quark expansion in terms
of the inverse of the dressed heavy quark mass 1/\hat{m}_Q is presented with a
complete decomposition of the full field and integrating out the small
components. The heavy quark-antiquark coupling effects are included in the
finite mass corrections. It is shown that the 1/\hat{m}_Q expansion is more
favorable in application. The extraction of |V_{cb}| from exclusive B decays is
studied by using such a new expansion approach.Comment: 21 pages, 11 figure
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