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Title: Pion absorption on 4He into the ppd final state

Abstract

Results from a 4{pi} solid angle measurement of the reaction {pi}{sup +}+{sup 4}He{yields}ppd at incident pion energies of T{sub {pi}}{sup +}}=70, 118, 162, 239, and 330 MeV are presented. Integrated cross sections are given for the final states with energetic deuterons (ppd) and (pd)p. The differential cross sections are described by a complete set of five independent variables and various other kinematic variables and compared to cascade and phase space models where deuterons were formed by a semiclassical pickup model. The data are investigated for signatures of initial and final state interactions: it is found that more than half of the (ppd) yield cannot be explained by these mechanisms. The remaining strength is reasonably well reproduced by 3N phase space models followed by pickup. (c) 2000 The American Physical Society.

Authors:
 [1];  [1];  [2];  [1];  [3];  [1];  [4];  [5];  [6];  [7];  [8]
  1. University of Zagreb, HR-10000 Zagreb, (Croatia)
  2. University of Basel, CH-4056 Basel, (Switzerland)
  3. Old Dominion University, Norfolk, Virginia 23529 (United States)
  4. LAMPF, Los Alamos, New Mexico 87545 (United States)
  5. Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
  6. University of Karlsruhe, D-7500 Karlsruhe, (Germany)
  7. (Switzerland)
  8. Paul Scherrer Institute, CH-5232 Villigen PSI, (Switzerland) (and others)
Publication Date:
OSTI Identifier:
20216344
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 61; Journal Issue: 5; Other Information: PBD: May 2000; Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; PION REACTIONS; HELIUM 4 TARGET; PROTONS; DEUTERONS; DIFFERENTIAL CROSS SECTIONS; PION-NUCLEON INTERACTIONS; EXPERIMENTAL DATA

Citation Formats

Planinic, M., Androic, D., Backenstoss, G., Bosnar, D., Dooling, T., Furic, M., Gram, P. A. M., Gregory, N. K., Hoffart, A., Paul Scherrer Institute, CH-5232 Villigen PSI,, and Ingram, C. H. Q. Pion absorption on 4He into the ppd final state. United States: N. p., 2000. Web. doi:10.1103/PhysRevC.61.054604.
Planinic, M., Androic, D., Backenstoss, G., Bosnar, D., Dooling, T., Furic, M., Gram, P. A. M., Gregory, N. K., Hoffart, A., Paul Scherrer Institute, CH-5232 Villigen PSI,, & Ingram, C. H. Q. Pion absorption on 4He into the ppd final state. United States. doi:10.1103/PhysRevC.61.054604.
Planinic, M., Androic, D., Backenstoss, G., Bosnar, D., Dooling, T., Furic, M., Gram, P. A. M., Gregory, N. K., Hoffart, A., Paul Scherrer Institute, CH-5232 Villigen PSI,, and Ingram, C. H. Q. Mon . "Pion absorption on 4He into the ppd final state". United States. doi:10.1103/PhysRevC.61.054604.
@article{osti_20216344,
title = {Pion absorption on 4He into the ppd final state},
author = {Planinic, M. and Androic, D. and Backenstoss, G. and Bosnar, D. and Dooling, T. and Furic, M. and Gram, P. A. M. and Gregory, N. K. and Hoffart, A. and Paul Scherrer Institute, CH-5232 Villigen PSI, and Ingram, C. H. Q.},
abstractNote = {Results from a 4{pi} solid angle measurement of the reaction {pi}{sup +}+{sup 4}He{yields}ppd at incident pion energies of T{sub {pi}}{sup +}}=70, 118, 162, 239, and 330 MeV are presented. Integrated cross sections are given for the final states with energetic deuterons (ppd) and (pd)p. The differential cross sections are described by a complete set of five independent variables and various other kinematic variables and compared to cascade and phase space models where deuterons were formed by a semiclassical pickup model. The data are investigated for signatures of initial and final state interactions: it is found that more than half of the (ppd) yield cannot be explained by these mechanisms. The remaining strength is reasonably well reproduced by 3N phase space models followed by pickup. (c) 2000 The American Physical Society.},
doi = {10.1103/PhysRevC.61.054604},
journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 5,
volume = 61,
place = {United States},
year = {2000},
month = {5}
}