Year: 1996
Type: article
Abstract: We present a systematic phenomenological analysis of the tests of CPT symmetry that are possible within an open quantum-mechanical description of the neutral kaon system that is motivated by arguments based on quantum gravity and string theory. We develop a perturbative expansion in terms of the three small CPT-violating parameters admitted in this description, and provide expressions for a complete set of K\ensuremath{\rightarrow}2\ensuremath{\pi}, 3\ensuremath{\pi}, and \ensuremath{\pi}l\ensuremath{\nu} decay observables to second order in these small parameters, and contrast this formalism with CPT violation within conventional quantum mechanics. We also illustrate the new tests of CPT symmetry and quantum mechanics that are possible in the open quantum-mechanical formalism using a regenerator. Indications are that experimental data from the CPLEAR and previous experiments could be used to establish upper bounds on the CPT-violating parameters that are of order ${10}^{\mathrm{\ensuremath{-}}19}$ GeV, approaching the order of magnitude that may be attainable in quantum theories of gravity. \textcopyright{} 1996 The American Physical Society.
Institutions: École Normale Supérieure de Lyon, Centre National de la Recherche Scientifique, Houston Advanced Research Center, Laboratoire d’Annecy de Physique des Particules, Laboratoire d'Annecy de Physique Théorique, Institut National de Physique Nucléaire et de Physique des Particules, European Organization for Nuclear Research, Texas A&M University
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
Award: G3509899929
OpenAlex ID: W2097367366