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- W2012844228 abstract "We outline a phenomenological program for the search of effects induced by (string-motivated) canonical noncommutative spacetime. The tests we propose are based, in analogy with a corresponding program developed over the last few years for the study of Lie-algebra noncommutative spacetimes, on the role of the noncommutativity parameters in the $E(p)$ dispersion relation. We focus on the role of deformed dispersion relations in particle-production collision processes, where the noncommutativity parameters would affect the threshold equation, and in the dispersion of gamma rays observed from distant astrophysical sources. We emphasize that the studies here proposed have the advantage of involving particles of relatively high energies, and may therefore be less sensitive to ``contamination'' (through IR/UV mixing) from the UV sector of the theory. We also explore the possibility that the relevant deformation of the dispersion relations could be responsible for the experimentally observed violations of the GZK cutoff for cosmic rays and could have a role in the observation of hard photons from distant astrophysical sources." @default.
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- W2012844228 date "2003-04-21" @default.
- W2012844228 modified "2023-09-27" @default.
- W2012844228 title "Phenomenology of particle production and propagation in string-motivated canonical noncommutative spacetime" @default.
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- W2012844228 doi "https://doi.org/10.1103/physrevd.67.085008" @default.
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