Interpreting the LSND anomaly: sterile neutrinos or CPT-violation or…?
نویسندگان
چکیده
منابع مشابه
Interpreting the LSND anomaly : sterile neutrinos or CPT - violation or . . . ? ∗
We first study how sterile neutrinos can fit the 5σ ν̄μ → ν̄e LSND anomaly: 3+1 solutions give a poor fit, but better than than 2+2 solutions (the best fit regions are somewhat different, so that MiniBooNE could discriminate). If instead MiniBooNE will find no νμ → νe signal, we will have a hint for CPT violation. Already now, unlike sterile neutrinos, CPTviolating neutrino masses can nicely acco...
متن کاملor CPT - violation or . . . ?
We first study how sterile neutrinos can fit the 5σ ν̄μ → ν̄e LSND anomaly: 2+2 solutions are strongly disfavoured by solar and atmospheric data, while 3+1 solutions can still give a poor fit (for a specific range of oscillation parameters, to be tested by MiniBooNE). If MiniBooNE will see no νμ → νe transitions, we will have a hint for CPT violation. Already now, unlike sterile neutrinos, CPT-vi...
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In order to accommodate the neutrino oscillation signals from the solar, atmospheric, and LSND data, a sterile fourth neutrino is generally invoked, though the fits to the data are becoming more and more constrained. However, it has recently been shown that the data can be explained with only three neutrinos, if one invokes CPT violation to allow different masses and mixing angles for neutrinos...
متن کاملNeutrinos as the messengers of CPT violation
CPT violation has the potential to explain all three existing neutrino anomalies without enlarging the neutrino sector. CPT violation in the Dirac mass terms of the three neutrino flavors preserves Lorentz invariance, but generates independent masses for neutrinos and antineutrinos. This specific signature is strongly motivated by braneworld scenarios with extra dimensions, where neutrinos are ...
متن کاملNeutrinos and the Phenomenology of Cpt Violation
In this talk I review briefly theoretical models and ideas on quantum gravity approaches entailing CPT violation. Then, I discuss various phenomenological tests of CPT violation using neutrinos, arguing in favour of their superior sensitivity as compared to that of tests using other particles, such as neutral mesons, or nuclear and atomic physics experiments. I stress the fact that there is no ...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 2002
ISSN: 0370-2693
DOI: 10.1016/s0370-2693(02)02042-7