Results 11 to 20 of about 2,737,113 (83)

Oscillations of neutrino velocity [PDF]

JHEP 03 (2013) 047, 2012
In this paper, we consider the problem of quantum measurement of neutrino velocity. We show, that the well known neutrino flavor oscillations are always accompanied by the oscillations of neutrino velocity. In particular, the velocity of a freely moving neutrino is demonstrated to periodically exceed the speed of light.
arxiv   +1 more source

Measuring Speed of Gravitational Waves by Observations of Photons and Neutrinos from Compact Binary Mergers and Supernovae [PDF]

Phys. Rev. D 90, 044048 (2014), 2014
Detection of gravitational waves (GW) provides us an opportunity to test general relativity in strong and dynamical regimes of gravity. One of the tests is checking whether GW propagates with the speed of light or not. This test is crucial because the velocity of GW has not ever been directly measured.
arxiv   +1 more source

Olber's Paradox for Superluminal Neutrinos: Constraining Extreme Neutrino Speeds at TeV-ZeV Energies with the Diffuse Neutrino Background [PDF]

JCAP 01 (2012) 054, 2011
The only invariant speed in special relativity is c; therefore, if some neutrinos travel at even tiny speeds above c, normal special relativity is incomplete and any superluminal speed may be possible. I derive a limit on superluminal neutrino speeds v >> c at high energies by noting that such speeds would increase the size of the neutrino horizon. The
arxiv   +1 more source

Thermal expansion of the earth and the speed of neutrinos [PDF]

arXiv, 2011
It is pointed out that one of the systematic effects that can affect the measurement of the speed of neutrinos significantly is the variability of the unaveraged measurement of the distance between two points on the earth due to thermal expansion. Possible difference between estimates done with surface GPS apparatus and the true underground baseline ...
arxiv  

Neutrino Velocity and the Variability of Fundamental Constants [PDF]

, 2012
Neutrino speed experiments could be viewed not only as tests of Lorentz invariance but also as measurements of limiting propagation speed for all standard model species below certain depth where no direct metrological information is available. The latter option, hypothetically caused by some chameleon-type background, could be tested in the next ...
arxiv   +1 more source

Can the neutrino speed anomaly be defended? [PDF]

arXiv, 2011
The OPERA collaboration reported [1] a measurement of the neutrino velocity exceeding the speed of light by 0.025%. For the 730 km distance from CERN in Geneva to the OPERA experiment an early arrival of the neutrinos of 60.7 ns is measured with an accuracy of \pm6.9 ns (stat.) and \pm7.4 ns (sys.). A basic assumption in the analysis is that the proton
arxiv  

The OPERA neutrino velocity result and the synchronisation of clocks [PDF]

arXiv, 2011
The CERN-OPERA experiment claims to have measured a one-way speed of neutrinos that is apparently faster than the speed of light c. One-way speed measurements such as these inevitably require a convention for the synchronisation of clocks in non-inertial frames since the Earth is rotating.
arxiv  

Possible Origin Of The Neutrino Speed Anomaly Reported By OPERA [PDF]

arXiv, 2011
Recently the OPERA collaboration reported a measurement of a superluminal speed of muon neutrinos travelling through the Earth's crust between their production site at CERN and their detection site under Gran Sasso, ~730 km away. The measurement was based on the assumption that the pulse shape of the neutrinos from the decay of parent mesons produced ...
arxiv  

Bimetric Relativity and the Opera Neutrino Experiment [PDF]

arXiv, 2011
We investigate the possibility of explaining the propagation of neutrinos measured by the OPERA experiment with $\delta v_\nu=(v_\nu-c_0)/c_0$, where $c_0$ is the speed of light in vacuum, using a bimetric relativity model. The geometry of the bimetric model has two metrics in spacetime.
arxiv  

Solar neutrinos as highlight of astroparticle physics [PDF]

arXiv, 1997
Solar neutrinos are discussed in the light of the new data and of recent progress in helioseismology. Most attention is given to the new status of Standard Solar Models due to seismically measured density and sound speed in the inner solar core. The elementary particle solutions to the Solar Neutrino Problem and their observational signatures are ...
arxiv