The Transverse Structure of the Baryon Source in Relativistic Heavy Ion Collisions

A direct method to reconstruct the transverse structure of the baryon source formed in a relativistic heavy ion collision is presented. The procedure makes use of experimentally measured proton and deuteron spectra and assumes that deuterons are formed via two-nucleon coalescence. The transverse density shape and flow profile are reconstructed for Pb+Pb collisions at the CERN-SPS. The ambiguity with respect to the source temperature is demonstrated and possible ways to resolve it are discussed.Comment: 15 pages LaTeX, 4 postscript figures, uses psfig.sty - Revised version, few minor change

Parton cascade and coalescence

This is a review of the parton cascade approach and its implications on parton coalescence at RHIC.Comment: Invited plenary talk at Quark Matter 2005 (Aug 4-9, 2005, Budapest, Hungary) - to appear in proceedings. 10 pages, 12 EPS figures, ESP style file include

Particle correlations at RHIC from parton coalescence dynamics -- first results

A new dynamical approach that combines covariant parton transport theory with hadronization channels via parton coalescence and fragmentation is applied to Au+Au at RHIC. Basic consequences of the simple coalescence formulas, such as elliptic flow scaling and enhanced proton/pion ratio, turn out to be rather sensitive to the spacetime aspects of coalescence dynamics.Comment: Contribution to Quark Matter 2004 (January 11-17, 2004, Oakland, CA). 4 pages, 2 EPS figs, IOP style fil

Correlation femtoscopy

The basics of correlation femtoscopy, recent results from femtoscopy in relativistic heavy ion collisions and their consequences are shortly reviewed.Comment: 10 pages, plenary review talk at Quark Matter 2005, 2 references adde

Thermal analysis of production of resonances in relativistic heavy-ion collisions

Production of resonances is considered in the framework of the single-freeze-out model of ultra-relativistic heavy ion collisions. The formalism involves the virial expansion, where the probability to form a resonance in a two-body channel is proportional to the derivative of the phase-shift with respect to the invariant mass. The thermal model incorporates longitudinal and transverse flow, as well as kinematic cuts of the STAR experiment at RHIC. We find that the shape of the pi+ pi- spectral line qualitatively reproduces the preliminary experimental data when the position of the rho peak is lowered. This confirms the need to include the medium effects in the description of the RHIC data. We also analyze the transverse-momentum spectra of rho, K*(892), and f_0(980), and find that the slopes agree with the observed values. Predictions are made for eta, eta', omega, phi, Lambda(1520), and Sigma(1385).Comment: minor modifications, a reference adde

Strange particle production at RHIC in a single-freeze-out model

Strange particle ratios and pT-spectra are calculated in a thermal model with single freeze-out, previously used successfully to describe non-strange particle production at RHIC. The model and the recently released data for phi, Lambda, anti-Lambda, and K*(892) are in very satisfactory agreement, showing that the thermal approach can be used to describe the strangeness production at RHIC.Comment: We have added the comparison of the model predictions to the newly released Lambda and K*(892) pT-spectra from STA

Get Out of the River! Rainfall and River Rise in Three Watersheds of the Dingle Peninsula

Land-use and Land-cover (LULC), coupled with climatic conditions are important components of ecosystems that affect water quality in the streams and rivers of a watershed. The conjoined Feohanagh, Milltown, and Owenmore River basins of the Dingle Peninsula in Ireland are similar in size but vary significantly in LULC. Previous work had shown substantial differences in the microbial communities of the three main rivers in the watersheds. Our current work focuses on understanding how differences in micro-climate affects the water-level and other physical parameters of the rivers and informs investigations of the differences observed in the microbial communities between the rivers. In this poster, we present an analysis of the correlations between rainfall and water level in the lower regions of the three watersheds along with basic descriptions of the hydrogeologic characteristics of the watersheds. Despite their conjoined nature and similar size, the three watersheds differ substantially in river-level response to rainfall and their basic topographical characteristics