Preface

Abstract

xv PREFACEThe so-called Hanbury Brown -Twiss (HBT) effect, proposed in the mid-fifties, proved a powerful tool for estimating stellar dimensions. In 1960, its analogous counterpart was found in the microcosmos, the Goldhaber-Goldhaber-Lee-Pais (GGLP) effect, which measured the dimensions of the pion emitting regions in high-energy reactions. Both effects derive from statistical correlations among identical particles, which also led to the phenomenon being called identical-particle correlations or intensity interferometry. In the last few years, being largely applied in the realm of high energy collisions, this effect also acquired an alternative nomenclature, femtoscopy, due to two main reasons. First, it deals with source sizes of the order of one femtometer, and secondly because the method has been generalized to exploit correlations induced by Coulomb and strong interactions between the two outgoing particles. Currently, the term has also incorporated the special correlations involving squeezed states, theoretically shown to be possible, but remaining to be discovered by experiments at RHIC and LHC.Femtoscopy is a dedicated field of research, which has been vastly developed in the BNL/AGS, CERN/SPS and RHIC era, not only experimentally but also with theoretical modeling and findings. This has created the need for a dedicated series of meetings, focusing on the discussion and deep understanding of femtocopic phenomena. Within this spirit, the Workshop on Particle Correlations and Femtoscopy (WPCF) was conceived. It had its successful start in September 2005, in Kroměříž, Czech Republic, where Roy Glauber was present and chaired a session on squeezed states, days before he was awarded the 2005 Nobel Prize in Physics, which also contributed to making it a memorable meeting.

Topics on hydrodynamic model of nucleus-nucleus collisions

“…We shall discuss here only the recent application of NeXuS+SPheRIO code for HBT effect with IC fluctuations, for Au+Au collisions at 130A GeV [61]. A more detailed account of two-particle correlations is given by Padula [70] in a separate paper in this issue.…”