Testing the principle of equivalence by solar neutrinos
- Tokyo Metropolitan Univ. (Japan). Dept. of Physics
- National Lab. for High Energy Physics, Tsukuba, Ibaraki (Japan)
We discuss the possibility of testing the principle of equivalence with solar neutrinos. If there exists a violation of the equivalence principle quarks and leptons with different flavors may not universally couple with gravity. The method we discuss employs a quantum mechanical phenomenon of neutrino oscillation to probe into the non-university of the gravitational couplings of neutrinos. We develop an appropriate formalism to deal with neutrino propagation under the weak gravitational fields of the sun in the presence of the flavor mixing. We point out that solar neutrino observation by the next generation water Cherenkov detectors can improve the existing bound on violation of the equivalence principle by 3-4 orders of magnitude if the nonadiabatic Mikheyev-Smirnov-Wolfenstein mechanism is the solution to the solar neutrino problem.
- Research Organization:
- Washington Univ., Seattle, WA (United States). Inst. for Nuclear Theory
- Sponsoring Organization:
- USDOE, Washington, DC (United States); Ministry of Education, Science and Culture (Japan)
- DOE Contract Number:
- FG06-90ER40561
- OSTI ID:
- 10167714
- Report Number(s):
- DOE/ER/40561-145; ON: DE94014972; IN: INT94-13-05; BR: 35KB01000/KB0300000; CNN: Grant 05640355; Grant 05-2115
- Resource Relation:
- Other Information: PBD: Apr 1994
- Country of Publication:
- United States
- Language:
- English
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