Glauber isovector spin responses for (p,n) reactions at 494 MeV

Abstract

The separated isovector spin-longitudinal and spin-transverse responses from a recent (p,n) quasifree experiment at 494 MeV are analyzed in a Glauber theory framework up to two-step contributions. Nuclear correlations are treated in the continuum random phase approximation, accounting for the spreading width of the particle-hole states. A good description of the spin-longitudinal response is achieved, hinting at some evidence of pionic effects in the quasielastic region. The spin-transverse response is underestimated and we show that multistep contributions, while sizable, are not sufficient to provide an explanation of the discrepancy.

8 pages, uses REVTeX and epsfig, 2 postscript figures; a postscript version of the paper is available by anonymous ftp at ftp://toxd01.to.infn.it/pub/depace/papers/9502/

References in corpus (1)

• Spin-Isospin Response Functions and the Effects of the $\Delta$-Hole Configurations in Finite Nuclei

Cited by in corpus (6)

• The Role of Color Neutrality in Nuclear Physics--Modifications of Nucleonic Wave Functions
• Distorted wave impulse approximation analysis for spin observables in nucleon quasi-elastic scattering and enhancement of the spin-longitudinal response
• Microscopic calculations of medium effects for 200-MeV (p,p') reactions
• Quasielastic K-nucleus scattering
• Longitudinal and Transverse Spin Responses in Relativistic Many Body Theory
• Two-step contribution to the spin-longitudinal and spin-transverse cross sections of the quasielastic (p,n) reactions