Neutron skins of 208Pb and 48Ca from pionic probes

被引:39
|
作者
Friedman, E. [1 ]
机构
[1] Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel
关键词
NUCLEAR REACTIONS C; Ca; Pb(pi(+) . X); E at 0.7-2.0 GeV/c; calculated; analyzed total sigma at relativistic energies varying neutron radial paramaters and using simultaneous fit to Allardyce data; Pb-208 deduced neutron; proton radii; ATOMIC PHYSICS Ca-48; Pb-208; analyzed pionic atom level shifts; level widths by varying neutron radial paratnaters and using de Laat and Powers data sets; deduced nuclear radii; neutron skin; CHIRAL-SYMMETRY; CROSS-SECTIONS; NUCLEAR; DISTRIBUTIONS; EXCITATIONS; RADII;
D O I
10.1016/j.nuclphysa.2012.09.007
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
The neutron skin of Pb-208 has received considerable attention in recent years. A variety of strongly-interacting probes depict a rather consistent picture but pionic probes have not been referred to in this context. We present here neutron-skin values from pionic atoms and from total reaction cross sections of pi(+) between 0.7 and 2 GeV/c which fit well into the picture. In addition we show that a neutron-skin for Ca-48 can be obtained from existing data on pionic atoms and the result agrees with pion scattering experiments and with the scattering of alpha particles. (c) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码:46 / 52
页数:7
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