Journal Article FZJ-2017-04046

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Measurement of the ω → π+ π− π0 Dalitz plot distribution

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2017
North-Holland Publ. Amsterdam

Physics letters / B 770, 418-425 () [10.1016/j.physletb.2017.03.050]

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Abstract: Using the production reactions pd→3Heω and pp→ppω, the Dalitz plot distribution for the ω→π+π−π0 decay is studied with the WASA detector at COSY, based on a combined data sample of (4.408±0.042)×10^4 events. The Dalitz plot density is parametrised by a product of the P-wave phase space and a polynomial expansion in the normalised polar Dalitz plot variables Z and ϕ. For the first time, a deviation from pure P-wave phase space is observed with a significance of 4.1σ . The deviation is parametrised by a linear term 1+2αZ, with α determined to be +0.147±0.036, consistent with the expectations of ρ-meson-type final-state interactions of the P-wave pion pairs.

Classification:

Contributing Institute(s):
  1. Experimentelle Hadronstruktur (IKP-1)
  2. Experimentelle Hadrondynamik (IKP-2)
  3. Zentralinstitut für Elektronik (ZEA-2)
  4. Kernphysikalische Großgeräte (IKP-4)
  5. IKP- Technische und Administrative Infrastruktur (IKP-TA)
Research Program(s):
  1. 612 - Cosmic Matter in the Laboratory (POF3-612) (POF3-612)
Experiment(s):
  1. WASA (Wide Angle Shower Apparatus) at COSY

Appears in the scientific report 2017
Database coverage:
Medline ; Creative Commons Attribution CC BY 4.0 ; SCOAP3 OpenAccess ; DOAJ ; OpenAccess ; Current Contents - Physical, Chemical and Earth Sciences ; DOAJ Seal ; Ebsco Academic Search ; IF < 5 ; JCR ; NationallizenzNationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection
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Dokumenttypen > Aufsätze > Zeitschriftenaufsätze
Institutssammlungen > IKP > IKP-TA
Institutssammlungen > IKP > IKP-4
Institutssammlungen > IKP > IKP-2
Institutssammlungen > IKP > IKP-1
Institutssammlungen > ZEA > ZEA-2
Institutssammlungen > PGI > PGI-4
Workflowsammlungen > Öffentliche Einträge
Publikationsdatenbank
Open Access

 Datensatz erzeugt am 2017-06-08, letzte Änderung am 2025-01-29


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