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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

We present a study of the multiplicities, of the lateral distributions and of the ratio of the electromagnetic to the hadronic components in the air showers, generated by the collision in the atmosphere of an incoming high energy cosmic ray…

High Energy Physics - Phenomenology · Physics 2009-11-10 Alessandro Cafarella , Claudio Coriano' , T. N. Tomaras

The baryon number transfer is studied in elementary and complex hadronic interactions at the CERN experiment NA49 at the SPS, at 158 AGeV beam energy (\sqrt{s}=17.2 GeV). A two component picture is proposed, which builds up the net proton…

High Energy Physics - Phenomenology · Physics 2009-11-10 D. Varga

We construct Boris-type schemes for integrating the motion of charged particles in particle-in-cell (PIC) simulation. The new solvers virtually combine the 2-step Boris procedure arbitrary n times in the Lorentz-force part, and therefore we…

Computational Physics · Physics 2019-10-08 Seiji Zenitani , Tsunehiko N Kato

This paper discusses how to improve the Boris pusher used to advance relativistic charged particles in fixed electromagnetic fields. We first derive a simpler solution to a flaw previously discovered by others. We then derive a new analytic…

Computational Physics · Physics 2022-10-26 Viktor K. Decyk , Warren B. Mori , Fei Li

We present a new dispersion relation for photons that are nonlinearly interacting with a radiation gas of arbitrary intensity due to photon-photon scattering. It is found that the photon phase velocity decreases with increasing radiation…

High Energy Physics - Phenomenology · Physics 2008-11-26 M. Marklund , P. K. Shukla , B. Eliasson

We study the regularities in the multiparticle production data obtained from different types of collisions indicating the universality of the hadroproduction process. The similarities of such bulk variables like the charged particle mean…

High Energy Physics - Phenomenology · Physics 2016-09-06 Edward K. G. Sarkisyan , Alexander S. Sakharov

Hadronic cosmic particles (cosmic rays) and gamma rays are constantly absorbed in the Earth's atmosphere and result in air showers of secondary particles. Cherenkov radiation from these atmospheric events is used to measure cosmic gamma…

High Energy Astrophysical Phenomena · Physics 2025-09-05 Clara E. Leitgeb , Robert D. Parsons , Andrew M. Taylor , Kenneth J. Ragan , David Berge , Cigdem Issever

Proton radiography is a useful diagnostic of high energy density (HED) plasmas under active theoretical and experimental development. In this paper we describe a new simulation tool that interacts realistic laser-driven point-like proton…

Proton-proton collision is a simple system to investigate nuclear matter and it is considered to be a guide for more sophisticated processes in the proton-nucleus and the nucleus-nucleus collisions. In this article, we present a…

High Energy Physics - Phenomenology · Physics 2015-05-26 M. T. Ghoneim , M. T. Hussein , F. H. Sawy

We propose a self-consistent model which utilizes the polarization vector to theoretically describe the evolution of spin polarization of relativistic electrons in an intense electromagnetic field. The variation of radiative polarization…

Plasma Physics · Physics 2021-07-02 Yuhui Tang , Zheng Gong , Jinqing Yu , Yinren Shou , Xueqing Yan

The quantum dynamics of colliding Bose-Einstein condensates with 150 000 atoms are simulated directly from the Hamiltonian using the stochastic positive-P method. Two-body correlations between the scattered atoms and their velocity…

Other Condensed Matter · Physics 2015-06-25 P. Deuar , P. D. Drummond

The advent of back-scattered laser beams for electron-positron colliders will allow detailed studies of a large array of high energy photon-photon and photon-electron collision processes with polarized beams. These include tests of…

High Energy Physics - Phenomenology · Physics 2009-09-11 Stanley J. Brodsky

In the context of the description of how the vortical motion, produced in peripheral heavy-ion collisions, is transferred to the spin of hadrons, we compute the $\sigma$-meson propagator at finite temperature and baryon density. This…

The acceleration of charged particles (electrons and protons) in flaring solar active regions is analyzed by numerical experiments. The acceleration is modelled as a stochastic process taking place by the interaction of the particles with…

Astrophysics · Physics 2009-11-13 A. Anastasiadis , C. Gontikakis , C. Efthymiopoulos

Ultrarelativistic heavy ion beams carry large electromagnetic and strong absorptive fields, allowing exploration of a variety of physics. Two-photon, photon-Pomeron, and double Pomeron interactions can probe a huge variety of couplings and…

Nuclear Theory · Physics 2009-10-30 Spencer Klein , Evan Scannapieco

Neutrino transport and neutrino-matter interactions are known to play an important role in the evolution of neutron star mergers, and of their post-merger remnants. Neutrinos cool remnants, drive post-merger winds, and deposit energy in the…

High Energy Astrophysical Phenomena · Physics 2021-11-18 Francois Foucart , Matthew D. Duez , Francois Hebert , Lawrence E. Kidder , Phillip Kovarik , Harald P. Pfeiffer , Mark A. Scheel

Recent developments in the physical model of 1 MeV to 100 TeV hadron and lepton interactions with nuclei and atoms are described. These include a new nuclear cross section library, a model for soft pion production, the cascade-exciton…

Nuclear Theory · Physics 2007-05-23 N. V. Mokhov , S. I. Striganov , A. Van Ginneken , S. G. Mashnik , A. J. Sierk , J. Ranft

In the interaction of laser pulses of extreme intensity ($>10^{23}~{\rm W cm}^{-2}$) with high-density, thick plasma targets, simulations show significant radiation friction losses, in contrast to thin targets for which such losses are…

Plasma Physics · Physics 2019-03-27 S. V. Popruzhenko , T. V. Liseykina , A. Macchi

The dynamics of transient electric fields generated by the interaction of high intensity laser pulses with underdense plasmas has been studied experimentally with the proton projection imaging technique. The formation of a charged channel,…