Measurement of the proton asymmetry parameter in neutron beta decay |
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| Authors: | Schumann M Kreuz M Deissenroth M Glück F Krempel J Märkisch B Mund D Petoukhov A Soldner T Abele H |
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| Affiliation: | Physikalisches Institut der Universit?t Heidelberg, Philosophenweg 12, 69120 Heidelberg, Germany. marc.schumann@gmx.net |
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| Abstract: | ![]()
The proton asymmetry parameter C in neutron decay describes the angular correlation between neutron spin and proton momentum. In this Letter, the first measurement of this quantity is presented. The result C= -0.2377(26) agrees with the standard model expectation. The coefficient C provides an additional parameter for new and improved standard model tests. |
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