1. Possible observation of photon speed energy dependence
- Author
-
Gharibyan, V.
- Subjects
- *
PHOTONS , *EINSTEIN-Podolsky-Rosen experiment , *LIGHT , *ANNIHILATION reactions - Abstract
Abstract: Current constraints on photon velocity variability are summarized and displayed in terms of an energy-dependent vacuum refraction index. It is shown that the energy–momentum balance of high energy Compton scattering is very sensitive to the outgoing photon speed. A missing energy observation in HERA Compton polarimeter data indicates that photons with 12.7 GeV energy are moving faster than light by 5.1(1.4) mm/s. An asymmetry spectrum measured by the SLC longitudinal polarimeter implies however an effect which is 42 times smaller, although the interpretation of the data is less clear here. [Copyright &y& Elsevier]
- Published
- 2005
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