Chinese Physics C > 2009, Vol. 33 > Issue(12): 1377-1380 DOI: 10.1088/1674-1137/33/12/059

Recoil polarimetry in meson photoproduction at MAMI

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Abstract：

The nucleon excitation spectrum remains poorly known, with the masses, widths, EM couplings and even existence of many states not well established. A program of experiments using meson photoproduction off the nucleon is being carried out to improve this situation. A new large acceptance recoil polarimeter has been developed by the Edinburgh group for use in such reactions with the Crystal Ball at MAMI. This work summarizes the procedure used to measure recoil polarization with the new device and presents some preliminary results for the double polarization observable C_xin the reaction γp→pπ⁰, compared to the current partial wave analysis.

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M.H. Sikora, D.I. Glazier and D.P. Watts. Recoil polarimetry in meson photoproduction at MAMI[J]. Chinese Physics C, 2009, 33(12): 1377-1380. doi: 10.1088/1674-1137/33/12/059

M.H. Sikora, D.I. Glazier and D.P. Watts. Recoil polarimetry in meson photoproduction at MAMI[J]. Chinese Physics C, 2009, 33(12): 1377-1380. doi:10.1088/1674-1137/33/12/059 shu

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Received: 2009-08-07
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Recoil polarimetry in meson photoproduction at MAMI

Corresponding author:M.H. Sikora,

Received Date:2009-08-07
Accepted Date:1900-01-01
Available Online:2009-12-05

Abstract:

The nucleon excitation spectrum remains poorly known, with the masses, widths, EM couplings and even existence of many states not well established. A program of experiments using meson photoproduction off the nucleon is being carried out to improve this situation. A new large acceptance recoil polarimeter has been developed by the Edinburgh group for use in such reactions with the Crystal Ball at MAMI. This work summarizes the procedure used to measure recoil polarization with the new device and presents some preliminary results for the double polarization observable C_xin the reaction γp→pπ⁰, compared to the current partial wave analysis.