Incoherent Neutral Pion Photoproduction on {sup 12}C
- School of Physics, University of Edinburgh, Edinburgh (United Kingdom)
- Institut fuer Kernphysik, University of Mainz (Germany)
- Department of Physics and Astronomy, University of Glasgow, Glasgow (United Kingdom)
We present the first detailed measurement of incoherent photoproduction of neutral pions to a discrete state of a residual nucleus. The {sup 12}C({gamma},{pi}{sup 0}){sup 12}C{sub 4.4} {sub MeV}* reaction has been studied with the Glasgow photon tagger at MAMI employing a new technique which uses the large solid angle Crystal Ball detector both as a {pi}{sup 0} spectrometer and to detect decay photons from the excited residual nucleus. The technique has potential applications to a broad range of future nuclear measurements with the Crystal Ball and similar detector systems elsewhere. Such data are sensitive to the propagation of the {delta} in the nuclear medium and will give the first information on matter transition form factors from measurements with an electromagnetic probe. The incoherent cross sections are compared to two theoretical predictions including a {delta}-hole model.
- OSTI ID:
- 21123807
- Journal Information:
- Physical Review Letters, Vol. 100, Issue 13; Other Information: DOI: 10.1103/PhysRevLett.100.132301; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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