质心能量 sqrt(s_{NN}) = 17.3 GeV 中心 Pb+Pb 碰撞中的质子-Λ 关联
核实验
2012-08-27 v1 高能物理 - 唯象学
摘要
NA49 实验在 CERN SPS 上研究了质心能量 sqrt(s_{NN}) = 17.3 GeV 的中心 Pb+Pb 碰撞中发射的质子与 Λ 粒子之间的动量关联。在较小的相对动量（q_{inv} < 0.2 GeV）处观察到明显的增强。通过将使用给定质子-Λ 对之间强相互作用的理论模型拟合到测量数据，推导出有效源尺寸的值。假设静态高斯源分布，我们推导出有效半径参数 R_G = 3.02 \pm 0.20$(stat.)^{+0.44}_{-0.16}(syst.) fm。
引用
@article{arxiv.1103.3395,
title = {Proton -- Lambda Correlations in Central Pb+Pb Collisions at sqrt(s_{NN}) = 17.3 GeV},
author = {T. Anticic and B. Baatar and D. Barna and J. Bartke and H. Beck and L. Betev and H. Bialkowska and C. Blume and M. Bogusz and B. Boimska and J. Book and M. Botje and P. Buncic and T. Cetner and P. Christakoglou and P. Chung and O. Chvala and J. Cramer and V. Eckardt and Z. Fodor and P. Foka and V. Friese and M. Gazdzicki and K. Grebieszkow and C. Hohne and K. Kadija and A. Karev and V. Kolesnikov and M. Kowalski and D. Kresan and A. Laszlo and R. Lacey and M. van Leeuwen and M. K. Mackowiak and M. Makariev and A. Malakhov and M. Mateev and G. Melkumov and M. Mitrovski and St. Mrowczynski and V. Nicolic and G. Palla and A. Panagiotou and W. Peryt and J. Pluta and D. Prindle and F. Puhlhofer and R. Renfordt and C. Roland and G. Roland and M. Rybczynski and A. Rybicki and A. Sandoval and N. Schmitz and T. Schuster and P. Seyboth and F. Sikler and E. Skrzypczak and M. Slodkowski and G. Stefanek and R. Stock and H. Strobele and T. Susa and M. Szuba and M. Utvic and D. Varga and M. Vassiliou and G. Veres and G. Vesztergombi and D. Vranic and Z. Wlodarczyk and A. Wojtaszek-Szwarc},
journal= {arXiv preprint arXiv:1103.3395},
year = {2012}
}
备注
14 pages, 9 figures, submitted to Phys. Rev. C