2011
DOI: 10.48550/arxiv.1109.1541
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Factorization in the model of unstable particles with continuous masses

V. Kuksa,
N. Volchanskiy

Abstract: We study processes with unstable particles in intermediate time-like states. It is shown that the amplitudes squared of such processes factor exactly in the framework of the model of unstable particles with continuous masses. Decay widths and cross sections can then be represented in a universal factorized form for an arbitrary set of interacting particles. This exact factorization is caused by specific structure of propagators in the model. We formulate the factorization method and perform a phenomenological … Show more

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Cited by 1 publication
(1 citation statement)
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“…In fact, within the context of Quantum Field Theory, a large value for the width implies that the particle is highly non-local and the narrow-width approximation is no longer valid calling for a more robust framework to describe it (see e.g. [25][26][27]). Such a scenario is not relevant for the charged VLL as the mixing element U MIX must be small due to EW constraints involving Higgs and Z boson decays.…”
Section: The Modelsmentioning
confidence: 99%
“…In fact, within the context of Quantum Field Theory, a large value for the width implies that the particle is highly non-local and the narrow-width approximation is no longer valid calling for a more robust framework to describe it (see e.g. [25][26][27]). Such a scenario is not relevant for the charged VLL as the mixing element U MIX must be small due to EW constraints involving Higgs and Z boson decays.…”
Section: The Modelsmentioning
confidence: 99%