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Medium effects on spin observables of proton knockout reactions

Abstract

Medium modifications of the properties of bound nucleons and mesons are investigated by means of medium energy quasi free proton knockout reactions with polarized incident protons. The sensitivity of the spin observables of these reactions to modifications of the nucleon and meson properties is studied using the Bonn one-boson exchange model of the nucleon-nucleon interaction. A method proposed to extract the pp analysing power in medium from the (p, 2 p) asymmetries indicates a reduction of this quantity compared to its free space value. This reduction is linked to modifications of masses and coupling constants of the nucleons and mesons in the nucleus. The implications of these modifications for another spin observable to be measured in the future are discussed. (author). 39 refs, 9 figs.
Authors:
Krein, G; [1]  Maris, T A.J.; Rodrigues, B B; Veit, E A [2] 
  1. Instituto de Fisica Teorica (IFT), Sao Paulo, SP (Brazil)
  2. Rio Grande do Sul Univ., Porto Alegre, RS (Brazil). Inst. de Fisica
Publication Date:
Jul 01, 1994
Product Type:
Technical Report
Report Number:
IFT-P-024/94
Reference Number:
SCA: 663430; PA: AIX-26:061471; EDB-95:132924; ERA-20:028053; NTS-96:006421; SN: 95001462754
Resource Relation:
Other Information: PBD: Jul 1994
Subject:
66 PHYSICS; PROTON-PROTON INTERACTIONS; KNOCK-OUT REACTIONS; SPIN; HIGH ENERGY PHYSICS; MESON-NUCLEON INTERACTIONS; NEUTRONS; NUCLEAR PHYSICS; NUCLEAR THEORY
OSTI ID:
101888
Research Organizations:
Instituto de Fisica Teorica (IFT), Sao Paulo, SP (Brazil)
Country of Origin:
Brazil
Language:
English
Other Identifying Numbers:
Other: ON: DE96601077; TRN: BR9533380061471
Availability:
INIS; OSTI as DE96601077
Submitting Site:
BRN
Size:
34 p.
Announcement Date:
Oct 06, 1995

Citation Formats

Krein, G, Maris, T A.J., Rodrigues, B B, and Veit, E A. Medium effects on spin observables of proton knockout reactions. Brazil: N. p., 1994. Web.
Krein, G, Maris, T A.J., Rodrigues, B B, & Veit, E A. Medium effects on spin observables of proton knockout reactions. Brazil.
Krein, G, Maris, T A.J., Rodrigues, B B, and Veit, E A. 1994. "Medium effects on spin observables of proton knockout reactions." Brazil.
@misc{etde_101888,
title = {Medium effects on spin observables of proton knockout reactions}
author = {Krein, G, Maris, T A.J., Rodrigues, B B, and Veit, E A}
abstractNote = {Medium modifications of the properties of bound nucleons and mesons are investigated by means of medium energy quasi free proton knockout reactions with polarized incident protons. The sensitivity of the spin observables of these reactions to modifications of the nucleon and meson properties is studied using the Bonn one-boson exchange model of the nucleon-nucleon interaction. A method proposed to extract the pp analysing power in medium from the (p, 2 p) asymmetries indicates a reduction of this quantity compared to its free space value. This reduction is linked to modifications of masses and coupling constants of the nucleons and mesons in the nucleus. The implications of these modifications for another spin observable to be measured in the future are discussed. (author). 39 refs, 9 figs.}
place = {Brazil}
year = {1994}
month = {Jul}
}