Phase Space Factor for Two-Body Decay if One Product is a Stable Tachyon

Details Phase Space Factor for Two-Body Decay if One Product is a Stable Tachyon Phase Space Factor for Two-Body Decay if One Product is a Stable Tachyon

2008-01-13

arxiv.org/abs/0801.1957v3

Physics

High Energy Physics

High Energy Physics - Theory

15 pages; LaTeX; corrected terminology ("phase _space_ factor") & improved wording in Intro. and Concl

Scientific paper

We calculate the phase space factor for a two-body decay in which one of the products is a tachyon. Two threshold conditions, a lower and an upper one, are derived in terms of the masses of the particles and the speed of a preferred frame. Implicit in the derivation is a consistently formulated quantum field theory of tachyons in which spontaneous Lorentz symmetry breaking occurs. The result is to be contrasted with a parallel calculation by Hughes and Stephenson, which, however, implicitly adheres to strict Lorentz invariance of the underlying quantum field theory and produces the conclusion that there is no threshold for this process.

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