2011/08/13 by Giuseppe Pagliara, Pagliara, Giuseppe, Francesco Giacosa +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #Quantum Physics (quant-ph)
paper · pdf · doi:10.48550/arxiv.1108.2782
openalex publication_date 2011/08/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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.