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We show that the phenomenology of isospin effects on heavy ion reactions at intermediate energies (few AGeV range) is extremely rich and can allow a ``direct'' study of the covariant structure of the isovector interaction in the hadron…

Nuclear Theory · Physics 2008-11-26 M. Di Toro , M. Colonna , G. Ferini , T. Gaitanos , V. Greco , H. H. Wolter

The possibility of new short-distance physics applicable inside the cores of NS is incorporated into the equation of state generated by the quark-meson coupling model. The contribution of this new physics to the energy density is taken to…

Nuclear Theory · Physics 2022-08-22 Jesper Leong , Theo F. Motta , Anthony W. Thomas , P. A. M. Guichon

While the presence of a light stop is increasingly disfavored by the experimental limits set on R-parity conserving scenarios, the naturalness of supersymmetry could still be safely concealed in the more challenging final states predicted…

High Energy Physics - Phenomenology · Physics 2017-10-04 Sara Diglio , Lorenzo Feligioni , Gilbert Moultaka

The early stages of heavy ion collisions are dominated by high density systems of gluons that carry each a small fraction $x$ of the momenta of the colliding nucleons. A distinguishing feature of such systems is the phenomenon of…

High Energy Physics - Phenomenology · Physics 2017-02-22 Jean-Paul Blaizot

The stopping power of antiprotons in atomic and molecular hydrogen as well as helium was calculated in an impact-energy range from 1 keV to 6.4 MeV. In the case of H2 and He the targets were described with a single-active electron model…

Atomic Physics · Physics 2015-05-13 Armin Lühr , Alejandro Saenz

The near-side distribution of particles at intermediate transverse momentum, associated with a high momentum trigger hadron produced in a high energy heavy-ion collision, is broadened in rapidity compared with the jet cone. This broadened…

High Energy Physics - Phenomenology · Physics 2008-11-26 A. Majumder , Berndt Muller , Steffen A. Bass

We consider proton-nucleus collisions at high energy in the Color Glass Condensate framework, and extract from the gluon production cross-section the probabilities of having a definite number of multiple scatterings in the nucleus. Various…

High Energy Physics - Phenomenology · Physics 2009-11-11 Nicolas Borghini , Francois Gelis

The features of net baryon productions and collective flow in relativistic heavy-ion collisions at energies reached at the CERN Large Hadron Collider (LHC), BNL Relativistic Heavy Ion Collider (RHIC), CERN Super Proton Synchrotron (SPS) and…

High Energy Physics - Phenomenology · Physics 2012-02-13 Sheng-Qin Feng , Yang Zhong

The equilibration of hot and dense nuclear matter produced in the central cell of central Au+Au collisions at RHIC ($\sqrt{s}=200$ AGeV) energies is studied within a microscopic transport model. The pressure in the cell becomes isotropic at…

High Energy Physics - Phenomenology · Physics 2009-10-31 L. V. Bravina , E. E. Zabrodin , S. A. Bass , M. Bleicher , M. Brandstetter , A. Faessler , C. Fuchs , W. Greiner , S. Soff , H. Stoecker

The equilibration of hot and dense nuclear matter produced in the central region in central Au+Au collisions at $\sqrt{s}=200$ AGeV is studied within the microscopic transport model UrQMD. The pressure here becomes isotropic at $t \approx…

The nuclear symmetry energy, which describes the energy difference of per proton and neutron in nuclear matter, has been extensively studied within the last two decades. Around saturation density, both the value and the slope of the nuclear…

Nuclear Theory · Physics 2020-07-21 Gao-Chan Yong , Ya-Fei Guo

We show how the limiting fragmentation phenomenon can arise from the Color Glass Condensate model of high energy QCD. We consider the very forward rapidity region in relativistic heavy ion collisions and argue that in this region,…

Nuclear Theory · Physics 2010-11-30 Jamal Jalilian-Marian

The STAR experiment at the Relativistic Heavy Ion Collider (RHIC) studies properties and phase transitions of nuclear matter in various nucleus-nucleus collisions at center-of-mass energies per nucleon collision $\sqrt{s_{NN}}=7.7$-200 GeV.…

Nuclear Experiment · Physics 2019-02-20 Zhenyu Ye

The spatial extent of the proton is a key factor in nuclear physics. Different measurement techniques probe different aspects of the proton, yielding different radii. The mass and charge radii depend on the parton and quark distributions…

High Energy Physics - Experiment · Physics 2026-03-05 Spencer R. Klein , Mathias C. Labonte , Zachary Sweger , Gerald A. Miller , Ramona Vogt

A search for charged massive (quasi-) stable particles with the D0 detector at the Tevatron collider based on 390 pb^{-1} of data is presented. The search is performed in the frameworks of gauge-mediated supersymmetry breaking and the…

High Energy Physics - Experiment · Physics 2010-04-22 Thomas Nunnemann

The nuclear photo-emulsion technique is used to study the information carried by the medium energy nucleons produced in heavy ion collisions. Multiplicity, energies as well as the angular distribution of this type of particles are measured.…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. T. Hussein , N. M. Hassan , N. M. Sadek , Jamila Elsweedy

We study the local equilibrium in the central $V = 125$ fm$^3$ cell in heavy-ion collisions at energies from 10.7 AGeV (AGS) to 160 AGeV (SPS) calculated in the microscopic transport model. In the present paper the hadron yields and energy…

We estimate the cross section for the scattering of a slow, color-neutral technibaryon made of colored constituents with nuclei. We find a cross section of order $A^2\ 10^{-45}$ cm$^2$, where $A$ is the atomic number of the nucleus. Even if…

High Energy Physics - Phenomenology · Physics 2009-10-22 R. Sekhar Chivukula , Andrew G. Cohen , Michael Luke , Martin J. Savage

We develop a statistical approach for the description of complex nuclei formation from dynamically produced baryons in high energy heavy-ion reactions. We consider a finite highly-excited expanding nuclear system formed after central…

Nuclear Theory · Physics 2022-07-29 A. S. Botvina , N. Buyukcizmeci , M. Bleicher

Within the framework of the quantum molecular dynamics transport model, the pion production and constraint of the high-density symmetry energy in heavy-ion collisions near threshold energy have been thoroughly investigated. The energy…

Nuclear Theory · Physics 2024-06-10 Heng-Jin Liu , Ban Zhang , Yuan-Qing Guo , Hui-Gan Cheng , Si-Na Wei , Zhao-Qing Feng