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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

Using a density matrix approach to describe the process of coalescence, we calculate the coalescence probabilities and invariant momentum spectra for deuterons and antideuterons. We evaluate our expressions with a hydrodynamically motivated…

Nuclear Theory · Physics 2009-10-09 Ruediger Scheibl , Ulrich Heinz

The production of light nuclei in relativistic heavy-ion collisions is well described by both the thermal model, where light nuclei are in equilibrium with all other hadron species present in a fireball, and by the coalescence model, where…

Nuclear Theory · Physics 2020-09-08 Stanislaw Mrowczynski , Patrycja Slon

The experimental data of the antideuteron production in proton-proton and proton-nucleus collisions are analyzed within a simple model based on the diagrammatic approach to the coalescence model. This model is shown to be able to reproduce…

Nuclear Theory · Physics 2009-11-07 R. P. Duperray , K. V. Protasov , A. Yu. Voronin

We employ a hybrid approach to describe the light nuclei production mechanism where the nucleons are assumed to be thermally produced, and are allowed to form light nuclei using a coalescence prescription. In this approach, we first fit…

A recently formulated thermal model for hadron production in heavy-ion collisions in the few-GeV energy regime is combined with the idea that some part of protons and neutrons present in the original thermal system forms deuterons via the…

Nuclear Theory · Physics 2023-12-22 Wojciech Florkowski , Radoslaw Ryblewski , Piotr Salabura , Nikodem Witkowski

Using the coalescence model based on nucleons from a blast-wave model with its parameters fitted to the measured proton transverse momentum spectrum and elliptic flow in heavy ion collisions at the Relativistic Heavy Ion Collider, we study…

Nuclear Theory · Physics 2017-06-07 Xuejiao Yin , Che Ming Ko , Yifeng Sun , Lilin Zhu

We discuss hadron production in heavy ion collisions at RHIC. We argue that hadrons at transverse momenta P_T < 5 GeV are formed by recombination of partons from the dense parton phase created in central collisions at RHIC. We provide a…

Nuclear Theory · Physics 2008-11-26 R. J. Fries , B. Muller , C. Nonaka , S. A. Bass

We address the formation of correlations in a general nonequilibrium situation. As an example we calculate the formation of light composite particles in a heavy ion collision. In particular we study the formation of deuterons via three-body…

Nuclear Theory · Physics 2017-08-23 M. Beyer , C. Kuhrts , G. Roepke , P. D. Danielewicz

The production of light hypernuclei in relativistic heavy-ion collisions provides a unique opportunity to probe hyperon--nucleon interactions and possible three-body forces, which are central to the resolution of the hyperon puzzle in…

Nuclear Theory · Physics 2026-03-17 Yue Hang Leung , Yingjie Zhou , Norbert Herrmann

We present a comprehensive analysis of photon production at RHIC and the LHC, proposing radiative hadronization as an additional photon source in high-energy heavy-ion collisions. For thermal photon, we perform relativistic viscous…

Nuclear Theory · Physics 2022-08-15 Hirotsugu Fujii , Kazunori Itakura , Katsunori Miyachi , Chiho Nonaka

Imaging of sources from data within the intensity interferometry is discussed. In the two-pion case, the relative pion source function may be determined through the Fourier transformation of the correlation function. In the proton-proton…

Nuclear Theory · Physics 2009-10-30 David A. Brown , Pawel Danielewicz

Coalescence has long been used to describe the production of light (anti-)nuclei in heavy ion collisions. The same underlying mechanism may also exist in jets when a proton and a neutron are close enough in phase space to form a deuteron.…

High Energy Physics - Phenomenology · Physics 2018-08-08 Natasha Sharma , Tony Perez , Andy Castro , Lokesh Kumar , Christine Nattrass

One can access the space-time development of a heavy-ion reaction directly by imaging the source function from two particle correlation functions. In the case of like-charged pions, this imaging can be recast as a Fourier inversion problem.…

Nuclear Theory · Physics 2007-05-23 David A. Brown

I discuss two-particle intensity interferometry as a method to extract from measured 1- and 2-particle momentum spectra information on the space-time geometry and dynamics of the particle emitting source. Particular attention is given to…

Nuclear Theory · Physics 2007-05-23 Ulrich Heinz

High-energy hadronic collisions generate environments characterized by temperatures above 100 MeV [1,2], about 100,000 times hotter than the center of the Sun. It is therefore currently unclear how light (anti)nuclei with mass number A of a…

Nuclear Experiment · Physics 2026-02-19 ALICE Collaboration

We propose a new method, i.e., an exclusive quark combination model + an inclusive hadron recombination model, to study different production sources of light nuclei in relativistic heavy-ion collisions. We take deuterons and $^3$He produced…

High Energy Physics - Phenomenology · Physics 2019-03-27 Rui-qin Wang , Jun Song , Gang Li , Feng-lan Shao

This paper investigates the electromagnetic production of lepton pairs with low transverse momentum in relativistic heavy ion collisions. We estimate the initial photons' transverse momentum contributions by employing models where the…

High Energy Physics - Phenomenology · Physics 2020-11-18 Spencer Klein , Al Mueller , Bo-Wen Xiao , Feng Yuan

We investigate the transverse polarization of hyperons produced by the photon induced reactions using the quark recombination model. This model reproduces polarizations of hadrons produced by the hadron-hadron collisions and accounts for…

High Energy Physics - Phenomenology · Physics 2017-08-23 Noriaki Nakajima , Katsuhiko Suzuki , Hiroshi Toki , Ken-Ichi Kubo

A formalism for hadron production at high \pt in heavy-ion collisions has been developed such that all partons hadronize by recombination. The fragmentation of a hard parton is accounted for by the recombination of shower partons that it…

Nuclear Theory · Physics 2009-11-10 Rudolph C. Hwa , C. B. Yang
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