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Related papers: Imaging Three-Dimensional Relative Sources from Nu…

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We investigate two-proton correlation functions for reactions in which fast dynamical and slow evaporative proton emission are both present. In such cases, the width of the correlation peak provides the most reliable information about the…

Nuclear Experiment · Physics 2009-11-07 G. Verde , D. A. Brown , P. Danielewicz , C. K. Gelbke , W. G. Lynch , M. B. Tsang

I review the prospects for measuring source characteristics from correlations other than those involving identical pions. Correlations generated from Coulomb and strong interactions are shown to provide remarkable resolving power for…

Nuclear Theory · Physics 2011-08-04 Scott Pratt

The effects of resonances and flow on the correlation function for two identical particles are described assuming chaotic sources and classical propagation of particles. Expanding to second order in relative momenta, the source sizes can be…

High Energy Physics - Phenomenology · Physics 2016-09-01 H. Heiselberg

We analyze the multiplicity correlations between distant forward and backward rapidity regions in relativistic heavy-ion collisions in a superposition framework, where the particle production occurs through independent emission from…

Nuclear Theory · Physics 2015-06-15 Adam Olszewski , Wojciech Broniowski

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…

Nuclear Theory · Physics 2009-10-31 A. Polleri , R. Mattiello , I. N. Mishustin , J. P. Bondorf

The Richardson-Lucy algorithm is applied to reconstruct the three-dimensional source function of identical pions from their two-particle correlation functions. The algorithm's performance is first evaluated through simulations with…

Nuclear Experiment · Physics 2026-03-10 Haojie Zhang , Junhuai Xu , Pengcheng Li , Zhi Qin , Dawei Si , Yijie Wang , Yongjia Wang , Qingfeng Li , Zhigang Xiao

Entangled photons, generated by spontaneous parametric down-conversion from a second-order nonlinear crystal, present a rich potential for imaging and image-processing applications. Since this source is an example of a three-wave mixing…

Quantum Physics · Physics 2015-06-26 Ayman F. Abouraddy , Bahaa E. A. Saleh , Alexander V. Sergienko , Malvin C. Teich

In this work, we present a theoretical and experimental study about the spatial correlations of paired photons generated by type-II spontaneous parametric down-conversion. In particular, we show how these correlations can be positive or…

Methodology is presented for analysis of three-particle correlation functions obtained in heavy ion collisions at ultra-relativistic energies. We show that harmonic correlations can be removed and jet driven correlations reliably extracted.…

Nuclear Experiment · Physics 2009-11-24 N. N. Ajitanand , J. M. Alexander , Roy A. Lacey , A. Taranenko

We present a short overview on the studies of transverse momentum dependent parton distribution functions of the nucleon. The aim of such studies is to provide a three dimensional imagining of the nucleon and a comprehensive description of…

High Energy Physics - Phenomenology · Physics 2015-06-25 Kai-bao Chen , Shu-yi Wei , Zuo-tang Liang

The methods allowing to extract the coherent component of pion emission conditioned by the formation of a quasi-classical pion source in heavy ion collisions are suggested. They exploit a nontrivial modification of the quantum statistical…

Nuclear Theory · Physics 2009-11-07 S. V. Akkelin , R. Lednicky , Yu. M. Sinyukov

The light field reconstruction from the focal stack can be mathematically formulated as an ill-posed integral equation inversion problem. Although the previous research about this problem has made progress both in practice and theory, its…

Functional Analysis · Mathematics 2025-02-06 Duo Liu , Gangrong Qu , Shan Gao

Source imaging methodology is used to provide a three-dimensional two-pion source function for mid-rapidity pion pairs with $p_T<70$ MeV/c in central ($0-7%$) Pb+Pb collisions at $\sqrt s_{NN}$=17.3 GeV. Prominent non-Gaussian tails are…

Nuclear Experiment · Physics 2015-05-13 C. Alt

By measuring hadronic single-particle spectra and two-particle correlations in heavy-ion collisions, the size and dynamical state of the collision fireball at freeze-out can be reconstructed. I discuss the relevant theoretical methods and…

Nuclear Theory · Physics 2007-05-23 Ulrich Heinz

Second-order intensity correlations from incoherent emitters can reveal the Fourier transform modulus of their spatial distribution, but retrieving the phase to enable completely general Fourier inversion to real space remains challenging.…

Optics · Physics 2023-07-26 Nolan Peard , Kartik Ayyer , Henry N. Chapman

An extended pion source, which can be temporarily created by a high energy nuclear collision, will also absorb and distort the outgoing pions. We discuss how this effect alters the interferometric pattern of the two-pion momentum…

Nuclear Theory · Physics 2009-09-25 M. -C. Chu , S. Gardner , T. Matsui , R. Seki

Observables from nuclear and high-energy experiments can be degraded by detector performance and/or methodology in extracting the observables, such as of the final-state characteristics of heavy-ion collisions in relation to a coarsely…

Nuclear Theory · Physics 2022-03-14 Pawel Danielewicz , Mizuki Kurata-Nishimura

We examine the possibility of extracting non-Gaussian sources from two-particle correlations in heavy-ion reactions. Non-Gaussian sources have been predicted in a variety of model calculations and may have been seen in various like-meson…

Nuclear Theory · Physics 2009-11-06 D. A. Brown , P. Danielewicz

The space-averaged phase-space density and entropy per particle are both fundamental observables which can be extracted from the two-particle correlation functions measured in heavy-ion collisions. Two techniques have been proposed to…

Nuclear Theory · Physics 2009-11-06 David A. Brown , Sergei Y. Panitkin , George F. Bertsch

The correlation function observed in high-energy collision experiments encodes critical information about the emitted source and hadronic interactions. While the proton-proton interaction potential is well constrained by nucleon-nucleon…

Nuclear Theory · Physics 2025-01-09 Lingxiao Wang , Jiaxing Zhao