Non exponential decays of hadrons

Abstract

We analyze the survival probability of unstable particles in the context of quantum field theory. After introducing the spectral function of resonances, we show that deviations from the exponential decay law occur at short times after the creation of the unstable particle. For hadronic decays, these deviations are sizable and could lead to observable effects.

Prepared for the Proceedings of the Workshop "Excited QCD 2011", Les Houches (France), 20-25 February 2011; 6 pages, 1 figure

References in corpus (1)

• Deviation from the exponential decay law in relativistic quantum field theory: the example of strongly decaying particles

Cited by in corpus (4)

• Non-exponential decay in quantum field theory and in quantum mechanics: the case of two (or more) decay channels
• Propagator poles and an emergent stable state below threshold: general discussion and the E(38) state
• Spectral function of a scalar boson coupled to fermions
• Resonances and poles in the second Riemann sheet