1. |
- Bilenky, Samoil M., et al.
(författare)
-
Tests of CPT invariance at neutrino factories
- 2002
-
Ingår i: Physical Review D. Particles and fields. - : The American Physical Society. - 0556-2821 .- 1089-4918. ; 65:7, s. 073024-1-073024-6
-
Tidskriftsartikel (refereegranskat)abstract
- We investigate possible tests of CPT invariance on the level of event rates at neutrino factories. We do not assume any specific model but phenomenological differences in the neutrino-antineutrino masses and mixing angles in a Lorentz invariance preserving context, such as could be induced by physics beyond the standard model. We especially focus on the muon neutrino and antineutrino disappearance channels in order to obtain constraints on the neutrino-antineutrino mass and mixing angle differences; we found, for example, that the sensitivity \m(3)-(m) over bar (3)\less than or similar to1.9x10(-4) eV could be achieved.
|
|
2. |
|
|
3. |
|
|
4. |
- Lundin, Magnus, et al.
(författare)
-
Compton scattering from the deuteron and extracted neutron polarizabilities
- 2003
-
Ingår i: Physical Review Letters. - 1079-7114. ; 90:19
-
Tidskriftsartikel (refereegranskat)abstract
- Differential cross sections for Compton scattering from the deuteron were measured at MAX-Lab for incident photon energies of 55 and 66 MeV at nominal laboratory angles of 45degrees, 125degrees, and 135degrees. Tagged photons were scattered from liquid deuterium and detected in three NaI spectrometers. By comparing the data with theoretical calculations in the framework of a one-boson-exchange potential model, the sum and the difference of the isospin-averaged nucleon polarizabilities, alpha(N) + beta(N) = 17.4 +/- 3.7 and alpha(N) - beta(N) = 6.4 +/- 2.4 (in units of 10(-4) fm(3)), have been determined. By combining the latter with the global-averaged value for alpha(p) - beta(p) and using the predictions of the Baldin sum rule for the sum of the nucleon polarizabilities, we have obtained values for the neutron electric and magnetic polarizabilities of alpha(n) = 8.8 +/- 2.4(total) +/- 3.0(model) and beta(n) = 6.5 -/+ 2.4(total) -/+ 3.0(model), respectively.
|
|