Electromagnetic fields in low-energy heavy-ion collisions with baryon stopping
arxiv(2024)
摘要
We investigate the impact of baryon stopping on the temporal evolution of
electromagnetic fields in vacuum at low-energy Au+Au collisions with
√(s_NN) = 4-20 GeV. Baryon stopping is incorporated into the
Monte-Carlo Glauber model by employing a parameterized velocity profile of
participant nucleons with non-zero deceleration. The presence of these
decelerating participants leads to noticeable changes in the centrality and
√(s_NN) dependence of electromagnetic fields compared to scenarios with
vanishing deceleration. The influence of baryon stopping differs for electric
and magnetic fields, also exhibiting variations across their components. We
observe slight alteration in the approximate linear dependency of field
strengths with √(s_NN) in the presence of deceleration. Additionally,
the longitudinal component of the electric field at late times becomes
significant in the presence of baryon stopping.
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