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In heavy-ion collisions we measure the Bose-Einstein correlation functions to map out the femtoscopic homogeneity region of the particle emitting source. Previously, a one dimensional measurement with a L\'evy shaped source was done at the…

Nuclear Experiment · Physics 2019-09-06 Bálint Kurgyis

The recent data for Bose-Einstein Correlations (BEC) of three-charged particles obtained by NA44 Collaboration have been analysed using theoretical formula with Coulomb wave functions. It has been recently proposed by Alt et al. It turns…

High Energy Physics - Phenomenology · Physics 2009-10-31 T. Mizoguchi , M. Biyajima

The peak of the two-particle Bose-Einstein correlation functions has a very interesting structure. It is often believed to have a multivariate Gaussian form. We show here that for the class of stable distributions, characterized by the…

Nuclear Theory · Physics 2009-11-10 T. Csorgo , S. Hegyi , W. A. Zajc

The parameters of the Bose-Einstein correlation function may obey an {\it $M_t$-scaling}, as observed in $S + Pb$ and $Pb + Pb$ reactions at CERN SPS. This $M_t$-scaling implies that the Bose-Einstein correlation functions view only a small…

High Energy Physics - Phenomenology · Physics 2008-11-26 T. Csorgo , B. Lorstad

Theoretical treatments of non-equilibrium dynamics in strongly interacting Bose-Fermi mixtures are complicated by the inherent non-Gaussian nature of the vacuum two-body physics, invalidating the typical Hartree-Fock-Bogoliubov…

Recent results on particle momentum and spin correlations are discussed, particularly, in view of the role played by the effect of final state interaction. It is demonstrated that this effect allows for (i) correlation femtoscopy with…

Nuclear Theory · Physics 2017-08-23 R. Lednicky

Many--particle correlations due to Bose-Einstein interference are studied in ultrarelativistic heavy--ion collisions. We calculate the higher order correlation functions from the 2--particle correlation function by assuming that the source…

Nuclear Theory · Physics 2008-11-26 H. Heiselberg , A. P. Vischer

We present improved Coulomb correction formulae for Bose-Einstein correlations including also exchange term and use them to calculate appropriate correction factors for several source functions. It is found that Coulomb correction to the…

High Energy Physics - Phenomenology · Physics 2009-10-28 M. Biyajima , T. Mizoguchi , T. Osada , G. Wilk

Recently DELPHI Collaboration reported new data on Bose-Einstein correlations (BEC) measured in e+e- -> W^+W^- events. Apparently no enhancement has been observed. We have analyzed these data including final state interactions (FSI) of both…

High Energy Physics - Phenomenology · Physics 2009-10-31 M. Biyajima , S. Sano , T. Osada

We calculate the asymptotic behaviour of correlation functions as a function of the microscopic parameters for a Bose-Fermi mixture with repulsive interaction in one dimension. For two cases, namely polarized and unpolarized fermions the…

Strongly Correlated Electrons · Physics 2007-05-23 Holger Frahm , Guillaume Palacios

Quantum-statistical correlation measurements in high-energy physics represent an important tool to obtain information about the space-time structure of the particle-emitting source. There are several final state effects which may modify the…

High Energy Physics - Phenomenology · Physics 2023-09-27 Mate Csanad , Antal Jakovac , Sandor Lokos , Ayon Mukherjee , Srikanta Kumar Tripathy

We applied an improved Coulomb correction method developed by us recently to data on identical KK-pairs production in S + Pb and p + Pb reactions at 200 GeV/c obtained by NA44 Collaboration. To analyse the whole range of the momentum…

High Energy Physics - Phenomenology · Physics 2009-10-28 M. Biyajima T. Mizoguchi , T. Osada , G. Wilk

This study is devoted to a detailed numerical testing of the analytical results obtained recently for the $M_t$-scaling of the parameters of the Bose-Einstein correlation functions. Numerical testing of analytical results for the spectrum…

High Energy Physics - Phenomenology · Physics 2007-05-23 T. Csorgo , P. Levai , B. Lorstad

We are presenting here the new formulae for Bose-Einstein correlations (BEC) which contain effects of final state interactions (FSI) of both strong (in $s$-wave) and electromagnetic origin. We demonstrate the importance of FSI in BEC by…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. Biyajima , T. Mizoguchi , T. Osada , G. Wilk

We study the influence of a possible coherent component in the boson source on the two-, three- and $n$-particle correlation functions in a generalized core/halo type of boson-emitting source. In particular, a simple formula is presented…

High Energy Physics - Phenomenology · Physics 2009-02-10 T. Csorgo , B. Lorstad , J. Schmidt-Sorensen , A. Ster

We present new algorithms for simulating Bose-Einstein correlations among final-state bosons in an event generator. The algorithms are all based on introducing Bose-Einstein correlations as a shift of final-state momenta among identical…

High Energy Physics - Phenomenology · Physics 2011-02-15 L. Lönnblad , T. Sjöstrand

We derive an exact recursion formula for the calculation of thermodynamic functions of finite systems obeying Bose-Einstein statistics. The formula is applicable for canonical systems where the particles can be treated as noninteracting in…

Statistical Mechanics · Physics 2009-10-31 Peter Borrmann , Jens Harting , Oliver Muelken , Eberhard R. Hilf

The correlation function measured in ultrarelativistic nuclear collisions is non-Gaussian. By making use of models we discuss and assess how much various effects can influence its shape. In particular, we focus on the parametrisations…

Nuclear Theory · Physics 2020-12-09 Jakub Cimerman , Boris Tomášik , Christopher Plumberg

Bose-Einstein correlations and momentum distributions are calculated for longitudinally expanding systems, like jets or high energy heavy ion collisions with light projectiles. The expansion generates a thermal length-scale in the…

High Energy Physics - Phenomenology · Physics 2009-10-28 T. Csorgo

One-dimensional spinless Bose and Fermi gases with contact interactions have the close interrelation via Girardeau's Bose-Fermi mapping, leading to the correspondences in their energy spectra and thermodynamics. However, correlation…

Quantum Gases · Physics 2018-01-19 Yuta Sekino , Shina Tan , Yusuke Nishida