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The density dependence of nuclear symmetry energy is determined from a systematic study of the isospin dependent bulk properties of asymmetric nuclear matter using the isoscalar and the isovector components of density dependent M3Y…

Nuclear Theory · Physics 2009-08-07 P. Roy Chowdhury , D. N. Basu , C. Samanta

Our paper aims at providing an answer to the question whether one can reliably describe the properties of the most important spin-isospin nuclear excitations, by using the available non-relativistic Skyrme energy functionals. Our method,…

Nuclear Theory · Physics 2008-11-26 Sara Fracasso , Gianluca Colo'

The microscopic energies and nuclear deformations of about 1850 even-even nuclei are calculated systematically within the macroscopic-microscopic framework using three Woods-Saxon parameterizations, with different isospin dependences, which…

Nuclear Theory · Physics 2015-08-11 Zhe-Ying Wu , Chong Qi , Ramon Wyss , Hong-Liang Liu

We propose a semi-empirical nuclear mass formula based on the macroscopic-microscopic method in which the isospin and mass dependence of model parameters are investigated with the Skyrme energy density functional. The number of model…

Nuclear Theory · Physics 2010-05-12 Ning Wang , Min Liu , Xizhen Wu

We calculated the azimuthal angle dependence of the local spin polarization of hyperons in 200 GeV Au+Au and 2.76 TeV Pb+Pb collisions in the framework of the (3+1)D viscous hydrodynamic model CLVisc with AMPT initial conditions encoding…

Nuclear Theory · Physics 2021-02-03 Hong-Zhong Wu , Long-Gang Pang , Xu-Guang Huang , Qun Wang

The asymptotic behavior of the optical potential, describing elastic scattering of a charged particle $\alpha$ off a bound state of two charged, or one charged and one neutral, particles at small momentum transfer $\Delta_{\alpha}$ or…

Nuclear Theory · Physics 2009-10-28 E. O. Alt , A. M. Mukhamedzhanov

Pion photoproduction is analyzed with the chiral Lagrangian. Partial-wave amplitudes are obtained by an analytic extrapolation of subthreshold reaction amplitudes computed in chiral perturbation theory, where the constraints set by…

High Energy Physics - Phenomenology · Physics 2015-03-17 A. M. Gasparyan , M. F. M. Lutz

We study the pion mass dependence of the rho(770) and f_0(600) masses and widths from one and two-loop unitarized Chiral Perturbation Theory. We show the consistency of one-loop calculations with lattice results for the M_rho, f_pi and the…

High Energy Physics - Phenomenology · Physics 2010-12-23 J. R. Pelaez , G. Rios

The coupled system of renormalized Dyson-Schwinger equations for the electron self-energy and the photon propagator are supplied with the tree level vertex as Ansatz for the renormalized three point function. The system is investigated…

High Energy Physics - Phenomenology · Physics 2009-09-25 Kurt Langfeld

We study the Bjorken x dependence of the virtual photon spin asymmetry in polarized deep inelastic scattering of electrons from hadrons. We use an exactly solved relativistic potential model of the hadron, treating the constituents as…

Nuclear Theory · Physics 2014-11-18 V. R. Pandharipande , M. W. Paris , I. Sick

We calculate the electromagnetic corrections needed to obtain isospin invariant hadronic pion-pion s-wave scattering lengths a^0, a^2 from the elements a_cc, a_0c of the s-wave scattering matrix for the (\pi^+ \pi^-, \pi^0 \pi^0) system at…

High Energy Physics - Phenomenology · Physics 2008-11-26 A. Gashi , G. C. Oades , G. Rasche , W. S. Woolcock

The density dependence of the symmetry energy in the equation of state of isospin asymmetric nuclear matter is studied using the isoscaling of the fragment yields and the antisymmetrized molecular dynamic calculation. It is observed that…

Nuclear Experiment · Physics 2008-11-26 D. V. Shetty , S. J. Yennello , G. A. Souliotis

Recently developed chiral effective field theory models provide excellent descriptions of the bulk characteristics of finite nuclei, but have not been tested with other observables. In this work, densities from both relativistic…

Nuclear Theory · Physics 2016-09-08 B. C. Clark , R. J. Furnstahl , L. Kurth Kerr , John Rusnak , S. Hama

A set of global optical potential has been derived to describe the interactions of $^{6}$He at low energies. The elastic scattering angular distribution data measured so far for many systems, ranging from $^{12}$C to $^{209}$Bi, have been…

Nuclear Theory · Physics 2010-04-29 Y. Kucuk , I. Boztosun , T. Topel

We construct the general Lagrangian for relativistic and heavy baryon chiral perturbation theory with virtual photons to fourth order. We work out the electromagnetic and strong isospin violating contributions to the nucleon self-energy,…

High Energy Physics - Phenomenology · Physics 2009-10-31 Guido Müller , Ulf-G. Meißner

We review recent results obtained for charge asymmetric systems at Fermi energies. Observables sensitive to the isospin dependent part of nuclear interaction are discussed, providing information on the symmetry energy behavior below normal…

Nuclear Theory · Physics 2010-02-18 M. Colonna , V. Baran , M. Di Toro

We provide analytical results for the $O(\alpha_s)$ corrections to the polar angle dependence of the longitudinal spin-spin correlation asymmetry in $e^+e^-\to q\bar q$. For top quark pair production the $O(\alpha_s)$ corrections to the…

High Energy Physics - Phenomenology · Physics 2014-03-13 S. Groote , J. G. Körner , J. A. Leyva

We assume that the nuclear potential for distances larger than 2.5 fm is given just by the exchanges of one and two pions and, for the latter, we adopt a model based on chiral symmetry and subthreshold pion-nucleon amplitudes, which…

Nuclear Theory · Physics 2008-11-26 Jean-Louis Ballot , Manoel R. Robilotta , Carlos A. da Rocha

We study the behavior of the cusp structures focusing on the isospin symmetry breaking effects. The properties of the exotic hadrons are reflected in the shape of the cusp structures. In realistic hadron scatterings, the threshold energies…

High Energy Physics - Phenomenology · Physics 2025-07-24 Katsuyoshi Sone , Tetsuo Hyodo

By simultaneously describing the data of isospin sensitive nucleonic flow and pion observables, such as $v_2^n/v_2^{ch}$ and $\pi^-/\pi^+$, with ultra-relativistic quantum molecular dynamics (UrQMD) model, we got the symmetry energy at flow…

Nuclear Theory · Physics 2023-01-03 Yingxun Zhang , Yangyang Liu , Yongjia Wang , Qingfeng Li , Zhuxia Li