The convolution formula for a decay rate

Details The convolution formula for a decay rate The convolution formula for a decay rate

2005-08-15

arxiv.org/abs/hep-ph/0508164v3

Phys.Lett.B633:545-549,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, typos added

Scientific paper

10.1016/j.physletb.2005.12.002 1

The convolution formula is derived within the framework of the decay-chain method for decay channels with three and four particles in a final state. To get this formula exactly for unstable particle of any type one must modify the propagators of vector and spinor fields. In this work we suggest proper modifications and get the convolution formula by direct calculation. It was noted that this approach naturally arises in the model of unstable particles with random mass.

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