A method for studying initial geometry fluctuations via event plane correlations in heavy ion collisions

A method is proposed to measure the relative azimuthal angle distributions involving two or more event planes of different order in heavy ion collisions using a Fourier analysis technique. The analysis procedure is demonstrated for correlations involving two and three event planes (Phi_n, Phi_m and Phi_h). The Fourier coefficients of these distributions are found to coincide with previously proposed correlators, such as cos(6Phi_2-6Phi_3) and cos(Phi_1+2Phi_2-3Phi_3) etc, hence the method provides a natural framework for studying these correlators at the same time. Using a Monte Carlo Glauber model to simulate Au+Au collisions with fluctuating initial geometry, we are able to identify several new two- or three-plane correlators that have sizable magnitudes and should be measured experimentally.Comment: 10 pages, 14 figure

Catálogo dos Erotylidae (Coleoptera) Neotropicais Catalogue of Neotropical Erotylidae (Coleoptera)

<abstract language="eng">The present catalog is an inventory of names proposed in Erotylidae (from family through subspecies) ocurring in the Neotropical Region, up to the present date (1988). It updates the nomenclature of included taxa, adds taxonomic units proposed after the Kuhnt's Genera Insectorum (Kuhnt, 1909) and includes abbreviated references to the literature, which are fully cited at the end of this catalogue. The systematic order follows Kuhnt, 1909, and afterwards, the position given to each taxa by the original author