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A multi-detector array for high energy nuclear e+e- pair spectrosocopy | | K.E. Stiebing
; F.W.N. de Boer
; O. Froehlich
; H. Bokemeyer
; K.A. Mueller
; K. Bethge
; J. van Klinken
; | | Date: |
3 Nov 2003 | | Journal: | J.Phys. G30 (2004) 165-180 | | Subject: | nucl-ex astro-ph hep-ph | | Abstract: | A multi-detector array has been constructed for the simultaneous measurement of energy- and angular correlation of electron-positron pairs produced in internal pair conversion (IPC) of nuclear transitions up to 18 MeV. The response functions of the individual detectors have been measured with mono-energetic beams of electrons. Experimental results obtained with 1.6 MeV protons on targets containing $^{11}$B and $^{19}$F show clear IPC over a wide angular range. A comparison with GEANT simulations demonstrates that angular correlations of $e^+e^-$ pairs of transitions in the energy range between 6 and 18 MeV can be determined with sufficient resolution and efficiency to search for deviations from IPC due to the creation and subsequent decay into $e^+e^-$ of a hypothetical short-lived neutral boson. | | Source: | arXiv, nucl-ex/0311002 | | Services: | Forum | Review | PDF | Favorites | |
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