Excitation function for [sup 4]He([pi][sup +],[ital pp])[sup 2]H two-nucleon absorption across the [Delta] resonance

Journal Article · Sun May 01 04:00:00 EDT 1994 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.49.R2276· OSTI ID:5009059

Breuer, H; Khayat, M G; Adimi, F; Flanders, B S; Khandaker, M A; Roos, P G; Zhang, D ^[1]; Bauer, T S; Konijn, J ^[2]; de Laat, C T.A.M. ^[3]; Kyle, G S; Mukhopadhyay, S; Wang, M ^[4]; Tacik, T ^[5]

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1. Department of Physics, University of Maryland, College Park, Maryland 20742 (United States)
2. NIKHEF-K, P.O. Box 4395, NL 1009 AJ Amsterdam (Netherlands)
3. Physics Laboratory, University Utrecht, P.O. Box 80000, 3508 TA Utrecht (Netherlands)
4. Department of Physics, New Mexico State University, Las Cruces, New Mexico 88003 (United States)
5. University of Karlsruhe, 7500 Karlsruhe (Germany)

Angular distributions and total cross sections for the [sup 4]He([pi][sup +],[ital pp])[sup 2]H reaction have been measured with small relative uncertainties at incident energies of [ital T][sub [pi]][sup +]=64, 87, 114, 162, 217, 278, and 327 MeV. The results strongly support the quasideuteron absorption model for pion absorption on two nucleons, which is found to contribute only [approx]50% to the total absorption cross section near the [Delta] resonance. All essential reaction channels of pion absorption near the [Delta] resonance on heavier nuclei seem to be present in [sup 4]He, but not in [sup 3]He. Any nuclear-density-related increase of pion absorption in [sup 4]He relative to [sup 2]H is [lt]50% and no binding energy effect is found.

• OSTI ID: 5009059
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 49:5; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

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663300 -- Nuclear Reactions & Scattering
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663460* -- Meson- & Hyperon-induced Reactions & Scattering-- (1992-)
663510 -- Nuclear Mass Ranges-- A=1-5-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ABSORPTION
ANGULAR DISTRIBUTION
BARYONS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DATA
DELTA BARYONS
DEUTERIUM
DISTRIBUTION
ELEMENTARY PARTICLES
ENERGY RANGE
EXCITATION FUNCTIONS
EXPERIMENTAL DATA
FERMIONS
FUNCTIONS
HADRON REACTIONS
HADRONS
HELIUM 4 TARGET
HYDROGEN ISOTOPES
INFORMATION
ISOTOPES
LIGHT NUCLEI
MESON REACTIONS
MEV RANGE
MEV RANGE 10-100
MEV RANGE 100-1000
N BARYONS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
NUMERICAL DATA
ODD-ODD NUCLEI
PION PLUS REACTIONS
PION REACTIONS
PROTONS
SORPTION
STABLE ISOTOPES
TARGETS