Author/Authors :
Kuznetsov، نويسنده , , I.A and Rudnev، نويسنده , , Yu.P and Serebrov، نويسنده , , A.P and Solovei، نويسنده , , V.A and Stepanenko، نويسنده , , I.V and Vasiliev، نويسنده , , A.V and Mostovoy، نويسنده , , Yu.A and Zimmer، نويسنده , , O and Yerozolimsky، نويسنده , , B.G and Dewey، نويسنده , , M.S and Wietfeldt، نويسنده , , F، نويسنده ,
Abstract :
A technique is described which allows us to measure the ratio λ=GA/GV of the weak axial-vector and vector coupling constants in neutron decay without any measurement of the neutron beam polarization. λ is determined from a combination of the parity-odd angular correlations σ→·p→e and σ→·p→ν between the neutron spin σ→ and the electron momentum p→e and the anti-neutrino momentum p→ν, respectively, both of which are measured in a single experiment using the same neutron beam. A description of the experiment and the results of the first run at the cold neutron beam facility at the Institut Laue–Langevin are presented.
