a Search for Neutrino Oscillations.
Abstract
A search for neutrino oscillation has been carried out at LAMPF (the Los Alamos Meson Physics Facility). The engineering run in the 1986 cycle has demonstrated that the detector works as designed. The probability of oscillation between two neurino types nu_1 and nu _2 can be parameterized by two variables: (1) the difference between the squares of the masses of two mass eigenstates deltam ^2 (equiv  m_1^2  m _2^2), and (2) the mixing angle (theta) between the two states. In this experiment, we set limits on the oscillations nu_mu to nu_{rm e} and nu_{rm e} to  nu_{rm e} as a function of deltam^2 and sin^2 2Theta. For the nu_mu to nu_{rm e} oscillation, we obtained sin^22 theta < 0.14 (90% C.L.) in the limit of large mass difference delta m^2 between neutrino mass eigenstates m_1 and m_2 ; and an upper limit on the product delta m^2sin^2 2 theta < 0.35 eV^2 in the limit of small mass difference. For the nu_{rm e}tonu_{rm e} oscillation, we obtained sin^2 2theta < 0.21 (90% C.L.) in the limit of large mass difference delta m^2 and an upper limit on the product deltam^2 sin^2 2theta < 0.39 eV^2 in the limit of small mass difference.
 Publication:

Ph.D. Thesis
 Pub Date:
 1987
 Bibcode:
 1987PhDT.......194C
 Keywords:

 Physics: Elementary Particles and High Energy