Journal Article FZJ-2013-04275

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Investigation of the dd→^{3}Henπ^{0} reaction with the FZ Jülich WASA-at-COSY facility

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2013
Inst. Woodbury, NY

Physical review / C 88(1), 014004 () [10.1103/PhysRevC.88.014004]

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Abstract: An exclusive measurement of the dd -> 3He n \pi 0 reaction was carried at a beam momentum of p = 1.2 GeV/c using the WASA-at-COSY facility. For the first time data on the total cross section as well as differential distributions were obtained. The data are described with a phenomenological approach based on a combination of a quasi-free model and a partial wave expansion for three-body reaction. The total cross section is found to be \sigma(tot) = (2.89 +- 0.01(stat) +- 0.06(sys) +- 0.29(norm)) \mu b. The contribution of the quasi-free processes (with the neutron being target or beam spectator) accounts for 38% of the total cross section and dominates the differential distributions in specific regions of the phase space. The remaining part of the cross section can be described within a partial wave decomposition indicating the significance of p-wave contributions in the final state.

Keyword(s): pi: interaction ; pi0: hadroproduction ; deuteron deuteron: exclusive reaction ; partial wave: expansion ; channel cross section: measured ; differential cross section: angular dependence ; nuclear reaction: model ; WASA ; experimental results ; Juelich COSY PS ; deuteron deuteron --> helium n pi0 ; 0.6 GeV/c/nucleon

Classification:

Note: *Brief entry*; 9 pages, 7 figures

Contributing Institute(s):
  1. Experimentelle Hadronstruktur (IKP-1)
  2. Experimentelle Hadrondynamik (IKP-2)
  3. Theorie der Starken Wechselwirkung (IAS-4)
  4. Kernphysikalische Großgeräte (IKP-4)
  5. IKP- Technische und Administrative Infrastruktur (IKP-TA)
  6. Zentralinstitut für Elektronik (ZEA-2)
Research Program(s):
  1. 531 - Hadron Structure and Dynamics (HSD) (POF2-531) (POF2-531)
  2. 53G - COSY (POF2-53G32) (POF2-53G32)
Experiment(s):
  1. WASA (Wide Angle Shower Apparatus) at COSY

Appears in the scientific report 2013
Database coverage:
Medline ; American Physical Society Transfer of Copyright Agreement ; OpenAccess ; Current Contents - Social and Behavioral Sciences ; JCR ; NationallizenzNationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection
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The record appears in these collections:
Document types > Articles > Journal Article
Institute Collections > IKP > IKP-TA
Institute Collections > IKP > IKP-4
Institute Collections > IKP > IKP-2
Institute Collections > IKP > IKP-1
Institute Collections > ZEA > ZEA-2
Institute Collections > IAS > IAS-4
Institute Collections > PGI > PGI-4
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 Record created 2013-09-13, last modified 2025-01-29