标题： 介质中矢量介子的输运方法性质 显示英文标题

标题： In-Medium Properties of Vector Mesons in a Transport Approach

摘要： 我们展示了在动能束流能量为3.5 GeV的p+p和p+Nb碰撞中产生的双轻子谱，这些谱是通过GiBUU输运模型模拟的，假设了不同的介质情景。 我们将这些谱与初步的HADES数据进行比较，并表明GiBUU能够合理地描述这些数据。 我们的模拟表明，中间双轻子质量区域对N-Delta电磁跃迁形式因子敏感，而该形式因子到目前为止在类时区域尚未被测量。 显示英文摘要

摘要： We present dilepton spectra from p+p and p+Nb collisions at a kinetic beam energy of 3.5 GeV, which were simulated with the GiBUU transport model assuming different in-medium scenarios. We compare these spectra to preliminary HADES data and show that GiBUU can describe the data reasonably well. Our simulations indicate that the intermediate dilepton-mass region is sensitive to the N-Delta electromagnetic transition form factor, which up to now is unmeasured in the time-like region.