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We studied nucleus-nucleus collision in strong magnetic field based on a transport model. It is found that neutrons and protons can be separated from a nucleus by strong magnetic field and neutron-rich high density nuclear matter and low…

核理论 · 物理学 2011-06-29 Gao-Chan Yong

Recent experiments show that $\Delta\gamma$, an observable designed for detecting the chiral magnetic effect (CME), in small collision system $p+A$ is similar with that in heavy ion collision $A+A$. This brings a challenge to the existence…

高能物理 - 唯象学 · 物理学 2022-08-10 Zong-Wei Zhang , Xian-Zhuo Cen , Wei-Tian Deng

We calculate the electromagnetic fields generated in small systems by using a multiphase transport (AMPT) model. Compared to $A+A$ collisions, we find that the absolute electric and magnetic fields are not small in $p$+Au and $d$+Au…

高能物理 - 唯象学 · 物理学 2018-02-22 Xin-Li Zhao , Yu-Gang Ma , Guo-Liang Ma

We derive the equations of motion for electroweak MSSM with a right-handed Stop, from which we derive the equations for the electromagnetic field that arises from bubble nucleation and collisions during the first order electroweak phase…

高能物理 - 唯象学 · 物理学 2008-08-01 Ernest M. Henley , Mikkel B. Johnson , Leonard S. Kisslinger

The hot and dense QCD matter produced in nuclear collisions at ultrarelativistic energy is characterized by very intense electromagnetic fields which attain their maximal strength in the early pre-equilibrium stage and interplay with the…

核理论 · 物理学 2020-10-28 Lucia Oliva

I numerically estimate the spacetime profile of the electromagnetic fields produced in intermediate-energy heavy-ion collisions at $\sqsNN=2.4\,\mathchar`-\,7.7\;{\rm GeV}$ for a wide range of impact parameters $b=0\,\mathchar`-\,9\;{\rm…

高能物理 - 唯象学 · 物理学 2025-07-15 Hidetoshi Taya

It is important to understand the strong external magnetic field generated at the very beginning of high energy nuclear collisions. We study the effect of the magnetic field on the charmonium yield and anisotropic distribution in Pb+Pb…

高能物理 - 唯象学 · 物理学 2016-11-15 Xingyu Guo , Shuzhe Shi , Nu Xu , Zhe Xu , Pengfei Zhuang

We show that in asymmetric heavy-ion collisions, especially off-central Cu+Au collisions, a sizable strength of electric field directed from Au nucleus to Cu nucleus is generated in the overlapping region, because of the difference in the…

核理论 · 物理学 2014-12-09 Yuji Hirono , Masaru Hongo , Tetsufumi Hirano

Relativistic heavy-ion collisions can produce extremely strong magnetic field in the collision regions. The spatial variation features of the magnetic fields are analyzed in detail for non-central Pb - Pb collisions at LHC $\sqrt{s_{NN}}$=…

高能物理 - 唯象学 · 物理学 2015-10-06 Yang Zhong , Chun-Bin Yang , Xu Cai , Sheng-Qin Feng

The strong electromagnetic fields associated with ultra-relativistic protons and nuclei correspond to an equivalent flux of photons. At the future Large Hadron Collider at CERN, the corresponding photon-nucleon center of mass energies will…

高能物理 - 唯象学 · 物理学 2009-11-10 J. Nystrand

Due to coherence, there are strong electromagnetic fields of short duration in very peripheral collisions. They give rise to photon-photon and photon-nucleus collisions with high flux up to an invariant mass region hitherto unexplored…

高能物理 - 唯象学 · 物理学 2009-09-25 G. Baur , K. Hencken , D. Trautmann , S. Sadovsky , Yu. Kharlov

Magnetic fields created in the noncentral heavy-ion collision are studied within a microscopic transport model, namely the Ultrarelativistic Quantum Molecular Dynamics model (UrQMD). Simulations were carried out for different impact…

核理论 · 物理学 2010-01-07 V. Skokov , A. Illarionov , V. Toneev

Magnetic field effects on free nucleons are studied in peripheral collisions of $^{197}$Au + $^{197}$Au at energies ranging from 600 to 1500 MeV/nucleon by utilizing an isospin-dependent quantum molecular dynamics (IQMD) model. With the…

核理论 · 物理学 2020-06-02 X. G. Deng , Y. G. Ma

We compute the electromagnetic fields generated in heavy-ion collisions by using the HIJING model. Although after averaging over many events only the magnetic field perpendicular to the reaction plane is sizable, we find very strong…

核理论 · 物理学 2013-05-30 Wei-Tian Deng , Xu-Guang Huang

Binary collisions between ions and electrons in an external magnetic field are considered in second-order perturbation theory, starting from the unperturbed helical motion of the electrons. The calculations are done with the help of an…

等离子体物理 · 物理学 2007-05-23 Hrachya B. Nersisyan

It was proposed that the electric fields may lead to chiral separation in QGP, which is called the chiral electric separation effect. The strong electromagnetic field and the QCD vacuum can both completely be produced in the off-central…

高能物理 - 唯象学 · 物理学 2016-06-03 Yang Zhong , Chun-Bin Yang , Xu Cai , Sheng-Qin Feng

In ultra-relativistic heavy-ion collisions, the strong electric field can be produced by the colliding nuclei. The magnitude of the electric field $E$ is on the order of $eE\sim m_{\pi}^2$ at the early stage of the collision. In quark gluon…

核理论 · 物理学 2020-05-26 Wu Biaogang , Chen Baoyi , Zhao Xingbo

Within an isospin- and momentum-dependent transport model, we investigate the necessity of selfconsistent calculations for the electromagnetic field in probing the nuclear symmetry energy using pion observables in heavy-ion collisions at…

核理论 · 物理学 2021-05-19 Gao-Feng Wei , Chang Liu , Xin-Wei Cao , Qi-Jun Zhi , Wen-Jun Xiao , Chao-Yun Long , Zheng-Wen Long

We present the spatial distributions of electromagnetic fields ($\bf E$ and $\bf B$) and electromagnetic anomaly $ \bf E \cdot B$ in Au+Au collisions at the RHIC energy $\sqrt{s}$=200 GeV based on a multi-phase transport model. A dipolar…

高能物理 - 唯象学 · 物理学 2019-04-17 Xin-Li Zhao , Guo-Liang Ma , Yu-Gang Ma

We study the mixing and the kinetic equilibration of projectile and target nucleons in relativistic heavy-ion collisions in the energy regime between 150~AMeV and 2~AGeV in a coupled-channel BUU (CBUU) approach. We find that equilibrium in…

核理论 · 物理学 2009-10-31 A. Hombach , W. Cassing , U. Mosel