Large-solid-angle study of pion absorption on 3He
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- T. Alteholz, D. Androic, G. Backenstoss, D. Bosnar, H. Breuer, A. Brkovic,
H. Döbbeling, T. Dooling, W. Fong, M. Furic, P. A. M. Gram, N. K. Gregory,
J. P. Haas, A. Hoffart, C. H. Q. Ingram, A. Klein, K. Koch, J. Köhler, B.
Kotlínski, M. Kroedel, G. Kyle, A. Lehmann, Z. N. Lin, G. Mahl, A. O.
Mateos, K. Michaelian, S. Mukhopadhyay, T. Petkovic, R. P. Redwine, D.
Rowntree, R. Schumacher, U. Sennhauser, N. Simicevic, F. D. Smit, G. van der
Steenhoven, D. R. Tieger, R. Trezeciak, H. Ullrich, M. Wang, M. H. Wang, H.
J. Weyer, M. Wildi, and K. E. Wilson
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University of Basel, CH-4056 Basel, Switzerland
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Carnegie-Mellon University, Pittsburgh, Pennsylvania
15213
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University of Karlsruhe, D-7500 Karlsruhe, Germany
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LAMPF, Los Alamos, New Mexico 87545
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University of Maryland, College Park, Mayland 20742
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Massachusetts Institute of Technology, Cambridge,
Massachusetts 02139
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National Accelerator Center, Faure 7131, South Africa
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New Mexico State University, Las Cruces, New Mexico
88003
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NIKHEF-K, NL-1009 DB Amsterdam, The Netherlands
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Old Dominion University, Norfolk, Virginia 23529
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Paul Scherrer Institute, CH-5232 Villigen PSI,
Switzerland
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University of Zagreb, HR-41001 Zagreb, Croatia
Received 6 April 1994
Measurements have been made of p+ absorption on 3He
at T+p=118, 162, and 239 MeV using the Large
Acceptance Detector System. The nearly 4p solid angle coverage of
this detector minimizes uncertainties associated with extrapolations over unmeasured regions of phase space.
The total absorption cross section is reported.
In addition, the total cross section is divided into components in
which only two or all three nucleons play a significant role in the process.
These are the first direct measurements of the total and three nucleon absorption cross sections.
©1994 The American Physical Society
URL:http://link.aps.org/abstract/PRL/v73/p1336
DOI: 10.1103/PhysRevLett.73.1336
PACS: 25.80.Ls, 25.10.+s
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