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I show that the average transverse momentum, $\langle p_t \rangle$, of the hadrons emitted in relativistic nuclear collisions can be used as a ``knob'' to control the strength of the magnetic field induced by the spectator and the…

Nuclear Theory · Physics 2021-02-23 Giuliano Giacalone

The STAR collaboration presents new measurements of high p_T hadron production in Au+Au and p+p collisions at RHIC. We extend the previously reported suppression of inclusive hadron and large azimuthal anisotropies to much higher transverse…

Nuclear Experiment · Physics 2009-11-07 G. J. Kunde

Exploiting final-state interactions and/or identity interference, analysis of anisotropic correlations of particles at low-relative velocities yields information on the anisotropy of emission sources in heavy-ion reactions. We show that the…

Nuclear Theory · Physics 2009-11-11 P. Danielewicz , S. Pratt

An essential part of high-energy hadronic collisions is the soft hadronic activity that underlies the primary hard interaction. It includes soft radiation from the primary hard partons, secondary multiple parton interactions (MPI), and…

High Energy Physics - Phenomenology · Physics 2015-03-11 Iain W. Stewart , Frank J. Tackmann , Wouter J. Waalewijn

An attractive, energy-dependent mean-field potential for baryons is introduced in order to generate a soft region in the nuclear equation-of-state, as suggested by recent lattice QCD calculations of baryon free matter at finite temperature.…

Nuclear Theory · Physics 2008-11-26 Bao-An Li , C. M. Ko

We made the first attempt to understand the observed unusual t dependence of single-spin asymmetry observed in the HJET experiment at RHIC. Usually, the interaction of hadrons is presented as a long-range Coulomb interaction and a…

High Energy Physics - Phenomenology · Physics 2024-02-01 B. Z. Kopeliovich , M. Krelina , I. K. Potashnikova

A high-energy muon collider scenario require a "final cooling" system that reduces transverse emittance by a factor of ~10 while allowing longitudinal emittance increase. The baseline approach has low-energy transverse cooling within…

Accelerator Physics · Physics 2017-08-02 David Neuffer , Hisham Sayed , Terry Hart , Don Summers

Longitudinal particle production in heavy-ion collisions is influenced both by preferential emission from participating nucleons and by the breakup of spectator matter, yet quantifying these effects experimentally remains challenging. We…

Nuclear Theory · Physics 2026-03-06 Vipul Bairathi , Somadutta Bhatta

Study of polarized proton-proton elastic scattering in the Coulomb-nuclear interference region allows one to measure the forward hadronic single spin-flip amplitude including its phase. However, in a precision experimental data analysis, a…

High Energy Physics - Phenomenology · Physics 2022-06-01 A. A. Poblaguev

The hadronic phase in ultrarelativistic nuclear collisions has a large influence on final state observables like multiplicity, flow and $p_t$ spectra, as studied in the UrQMD approach. In this model one assumes that a non-equilibrium…

Nuclear Theory · Physics 2017-06-21 J. Steinheimer , J. Aichelin , M. Bleicher , H. Stöcker

Great interest has attached to recent Au+Au, E = 200 A GeV measurements at RHIC, obtained with the PHENIX, STAR, PHOBOS and BRAHMS detectors. For central collisions and vanishing pseudo-rapidity all experiments indicate a considerable…

Nuclear Theory · Physics 2007-05-23 D. E. Kahana , S. H. Kahana

A significant excess of J/$\psi$ yield at very low transverse momentum ($p_T < 0.3$ GeV/c) was observed by the ALICE and STAR collaborations in peripheral A+A collisions, which points to evidence of coherent photoproduction of J/$\psi$ in…

Nuclear Theory · Physics 2018-05-02 W. Zha , S. R. Klein , R. Ma , L. Ruan , T. Todoroki , Z. Tang , Z. Xu , C. Yang , Q. Yang , S. Yang

We study the interplay of hadronic and Coulomb interactions for $pp$ scattering at LHC energies on the basis of the previous determination of the real part of the amplitude [{\it V.V. Anisovich, V.A. Nikonov, J. Nyiri}, Int. J. Mod. Phys.…

High Energy Physics - Phenomenology · Physics 2016-03-02 V. V. Anisovich , V. A. Nikonov

It is observed that interstitial hydrogen nucleii on a metallic lattice are strongly coupled to their near neighbours by the unscreened electromagnetic field mediating transitions between low-lying states. It is shown that the dominant…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 J. S. Brown

Soft colour exchange models give a unified description of both diffractive and non-diffractive events, such that e-p and p-pbar collider data with and without rapidity gaps are well reproduced. We show that these models also describe the…

High Energy Physics - Phenomenology · Physics 2007-05-23 N. Timneanu , G. Ingelman

Multiple partonic interactions are widely used to simulate the hadronic final state in high energy hadronic collisions, and successfully describe many features of the data. It is important to make maximum use of the available physical…

High Energy Physics - Phenomenology · Physics 2009-01-30 Manuel Bähr , Jonathan M. Butterworth , Michael H. Seymour

The rejection of the contamination, or background, from low-energy strong interactions at hadron collider experiments is a topic that has received significant attention in the field of particle physics. This article builds on a…

High Energy Physics - Phenomenology · Physics 2017-02-28 Federico Colecchia , Akram Khan

In order to incorporate the finite range effect into effective interactions, a modification of the Skyrme force by introducing a cut-off factor for high momentum transfers is proposed. The parameters of the cut-off factor are determined by…

Nuclear Theory · Physics 2007-05-23 Denis Lacroix , Sakir Ayik , Osman Yilmaz , Ahmet Gokalp

Understanding the properties of hypernuclei helps to constrain the interaction between hyperon and nucleon, which is known to play an essential role in determining the properties of neutron stars. Experimental measurements have suggested…

The hadro-chemistry of bottom quarks produced in hadronic collisions encodes valuable information on the mechanism of color-neutralization in these reactions. We first compute the chemistry of bottom-hadrons in high-energy $pp$ collisions…

Nuclear Theory · Physics 2024-01-02 Min He