Elastic scattering, polarization and absorption of relativistic antiprotons on nuclei

详细信息    查看全文

• 作者：A.B. Larionov^a ; ^b ; ^{Alexei.Larionov@theo.physik.uni-giessen.de} ; H. Lenske^a
• 关键词：p¯ ; A and pA elastic and quasielastic scattering ; p¯ ; polarization and absorption on nuclei ; Glauber model
• 刊名：Nuclear Physics A
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：957
• 期：Complete
• 页码：450-476
• 全文大小：939 K
• 卷排序：957

文摘

We perform Glauber model calculations of the antiproton–nucleus elastic and quasielastic scattering and absorption in the beam momentum range ∼0.5÷10 GeV/c∼0.5÷10 GeV/c. A good agreement of our calculations with available LEAR data and with earlier Glauber model studies of the p¯A elastic scattering allows us to make predictions at the beam momenta of ∼10 GeV/c  , i.e. at the regime of the PANDA experiment at FAIR. The comparison with the proton–nucleus elastic scattering cross sections shows that the diffractive minima are much deeper in the p¯A case due to smaller absolute value of the ratio of the real-to-imaginary part of the elementary elastic amplitude. Significant polarization signal for p¯A elastic scattering at 10 GeV/c   is expected. We have also revealed a strong dependence of the p¯A absorption cross section on the slope parameter of the transverse momentum dependence of the elementary p¯N amplitude. The p¯A optical potential is discussed.