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Hanbury Brown--Twiss interferometry (HBT) provides crucial insights into both the space-time structure and the momentum-space evolution of ultrarelativistic nuclear collisions at freeze-out. In particular, the dependence of the HBT radii on…

Nuclear Theory · Physics 2020-11-18 Christopher Plumberg

In non-central heavy ion collisions, identical two particle Hanbury-Brown/Twiss (HBT) correlations C(K,q) depend on the azimuthal direction of the pair momentum K. We investigate the consequences for a harmonic analysis of the corresponding…

Nuclear Theory · Physics 2008-11-26 Urs Achim Wiedemann

Hanbury-Brown Twiss (HBT) correlation measurements provide valuable information about the phase space distribution of matter in ultrarelativistic heavy-ion collisions. The rapidity dependence of HBT radii arises from a nontrivial interplay…

High Energy Physics - Phenomenology · Physics 2015-06-25 Thorsten Renk

Currently, the only known way to obtain experimental information about the space-time structure of a heavy-ion collision is through 2-particle momentum correlations. Azimuthally sensitive HBT interferometry (Hanbury Brown-Twiss intensity…

Nuclear Theory · Physics 2011-07-01 Evan Frodermann , Ulrich Heinz

The beam energy dependence of correlation lengths (the Hanbury-Brown-Twiss radii) is calculated by using a blast-wave model and the results are comparable with those from RHIC-STAR beam energy scan data as well as the LHC-ALICE…

Nuclear Theory · Physics 2016-09-12 S. Zhang , Y. G. Ma , J. H. Chen , C. Zhong

We study the impacts of the squeezing effect caused by in-medium mass modification on the Hanbury Brown-Twiss (HBT) correlation of $\phi\phi$ using a hydrodynamical source. The squeezing effect reduces the influence of transverse flow on…

High Energy Physics - Phenomenology · Physics 2025-04-28 Yong Zhang , Peng Ru

In this report we give a detailed account on Hanbury Brown/Twiss (HBT) particle interferometric methods for relativistic heavy-ion collisions. These exploit identical two-particle correlations to gain access to the space-time geometry and…

Nuclear Theory · Physics 2009-10-09 Urs Achim Wiedemann , Ulrich Heinz

Peripheral heavy ion reactions at ultra relativistic energies have large angular momentum that can be studied via two particle correlations using the Differential Hanbury Brown and Twiss method. We analyze the possibilities and sensitivity…

Nuclear Theory · Physics 2015-01-16 L. P. Csernai , S. Velle , D. J. Wang

Two-particle Hanbury-Brown-Twiss (HBT) interferometry is an important probe for understanding the space-time structure of particle emission sources in high energy heavy ion collisions. We present the comparative studies of HBT radii in…

Nuclear Experiment · Physics 2018-07-17 Debasish Das

We investigate the transverse momentum dependence of pion HBT radii on the basis of a hydrodynamical model. Recent experimental data show that $R_{\text{out}}/R_{\text{side}} < 1$, which suggests a strong opaqueness of the source. In…

Nuclear Theory · Physics 2009-11-10 Kenji Morita , Shin Muroya

We investigate the measurement of Hanbury Brown-Twiss (HBT) photon correlations as an experimental tool to discriminate different sources of photon enhancement, which are proposed to simultaneously reproduce the direct photon yield and the…

High Energy Physics - Phenomenology · Physics 2020-09-02 Oscar Garcia-Montero , Nicole Löher , Aleksas Mazeliauskas , Jürgen Berges , Klaus Reygers

The Hanbury-Brown Twiss correlation function for two identical particles is studied for systems with cylindrical symmetry. Its shape for small values of the relative momentum is derived in a model independent way. In addition to the usual…

High Energy Physics - Phenomenology · Physics 2022-02-23 Scott Chapman , Pierre Scotto , Ulrich Heinz

Two-pion Hanbury-Brown-Twiss (HBT) correlations for central Pb-Pb collisions at the Large-Hadron-Collider (LHC) energy of $\sqrt{s_{NN}}=2.76$ TeV are investigated for the first time with the microscopic transport model UrQMD…

Nuclear Theory · Physics 2012-04-11 Qingfeng Li , Gunnar Graef , Marcus Bleicher

We used an Isospin dependent Quantum Molecular Dynamics (IQMD) model to simulate Au + Au collisions at beam energy $E_{beam}$ = 1.23$A$ GeV, which corresponds to center of mass energy $\sqrt{s_{NN}} = 2.4$ GeV. Firstly, we obtained…

Nuclear Theory · Physics 2022-05-10 Ling-Meng Fang , Yu-Gang Ma , Song Zhang

$\textbf{HoTCoffeeh}$ ($\textbf{H}$anbury Br$\textbf{o}$wn-$\textbf{T}$wiss $\textbf{Co}$rrelation $\textbf{f}$unctions and radii $\textbf{f}$rom $\textbf{e}$vent-by-$\textbf{e}$vent $\textbf{h}$ydrodynamics) is a new computational tool…

Nuclear Theory · Physics 2018-09-26 Christopher Plumberg , Ulrich Heinz

Using several source models, we analyze the transverse momentum dependence of HBT radii in the relativistic heavy-ion collisions. The results indicate that the single-particle space-momentum angle distribution plays an important role in the…

Nuclear Theory · Physics 2020-06-24 Hang Yang , Qichun Feng , Yanyu Ren , Jingbo Zhang , Lei Huo

Recent work has shown that a temperature dependence of the shear viscosity to entropy ratio, $\eta/s$, influences the collective flow pattern in heavy-ion collisions in characteristic ways that can be measured by studying hadron transverse…

Nuclear Theory · Physics 2015-06-11 Christopher Plumberg , Ulrich Heinz

Hanbury Brown-Twiss (HBT) results of the neutron-proton correlation function have been systematically investigated for a series nuclear reactions with light projectiles with help of Isospin-Dependent Quantum Molecular Dynamics model. The…

Nuclear Theory · Physics 2008-11-26 Y. B. Wei , Y. G. Ma , W. Q. Shen , G. L. Ma , K. Wang , X. Z. Cai , C. Zhong , W. Guo , J. G. Chen , D. Q. Fang , W. D. Tian , X. F. Zhou

A brief review is given on the discovery and the first five decades of the Hanbury Brown - Twiss effect and its generalized applications in high energy nuclear and particle physics, that includes a meta-review. Interesting and inspiring new…

Nuclear Theory · Physics 2015-06-26 T. Csorgo

Hanbury-Brown--Twiss interferometry is a technique which yields effective widths (i.e., "HBT radii") of homogeneity regions in the fireballs produced in heavy ion collisions. Because the initial conditions of these collisions are…

Nuclear Theory · Physics 2015-10-28 Christopher Plumberg , Ulrich Heinz
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