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VOLUME 61 | ISSUE 3 | PAGE 163
Precise measurement of the cross section for the reaction \vec \nu_e+p\to e^++n at the Bourges reactor
With the help of an integrated detector at a distance of 15 m from the Bourges-5 reactor, —300 000 events of the reaction ve+p-+e + + n were detected. The error in the measured cross section σβχρ has been reduced by a factor of 2. This cross section is now known within an error smaller than the expected cross section σν_Α: σαρ ν= 0.987± 0.014 (experimental) ±0.027 (theoretical). The result is used to test the minimal model of the electroweak interaction. The result is of metrological value for several directions in the physics of reactor antineutrinos ve. © 1995 American Institute of Physics.




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