Journal Article FZJ-2021-02103

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Photoproduction of the f 2 ( 1270 ) Meson Using the CLAS Detector

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2021
APS College Park, Md.

Physical review letters 126(8), 082002 () [10.1103/PhysRevLett.126.082002]

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Abstract: The quark structure of the f2(1270) meson has, for many years, been assumed to be a pure quark-antiquark (qq¯) resonance with quantum numbers JPC=2++. Recently, it was proposed that the f2(1270) is a molecular state made from the attractive interaction of two ρ-mesons. Such a state would be expected to decay strongly to final states with charged pions, due to the dominant decay ρ→π+π−, whereas decay to two neutral pions would likely be suppressed. Here, we measure for the first time the reaction γp→π0π0p, using the CLAS detector at Jefferson Lab for incident beam energies between 3.6-5.4~GeV. Differential cross sections, dσ/dt, for f2(1270) photoproduction are extracted with good precision, due to low backgrounds, and are compared with theoretical calculations.

Classification:

Contributing Institute(s):
  1. Experimentelle Hadronstruktur (IKP-1)
Research Program(s):
  1. 612 - Cosmic Matter in the Laboratory (POF4-612) (POF4-612)
  2. 6G12 - FAIR (GSI) (POF4-6G12) (POF4-6G12)

Appears in the scientific report 2021
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Medline ; American Physical Society Transfer of Copyright Agreement ; OpenAccess ; Clarivate Analytics Master Journal List ; Current Contents - Electronics and Telecommunications Collection ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 5 ; JCR ; NationallizenzNationallizenz ; SCOAP3 sponsored Journal ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection
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 Record created 2021-05-10, last modified 2021-06-23


OpenAccess:
2010.16006 - Download fulltext PDF
PhysRevLett.126.082002 - Download fulltext PDF
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