Noncommutative QED and the Lifetimes of Ortho and Para Positronium
| Autor: | Wayne W. Repko, M. Caravati, Alberto Devoto |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Physics
Nuclear and High Energy Physics Particle physics Photon Energy distribution 010308 nuclear & particles physics FOS: Physical sciences Charge (physics) 01 natural sciences Noncommutative geometry Positronium Weak binding High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) 0103 physical sciences High Energy Physics::Experiment 010306 general physics |
| DOI: | 10.48550/arxiv.hep-ph/0211463 |
| Popis: | We examine the implications of including corrections associated with the noncommutative extension of quantum electrodynamics - NCQED - to the decays of the ortho and para positronium (\Trip and \Sing) ground states. In NCQED, the well known charge conjugation argument restricting \Trip decays to an odd number of photons and \Sing decays to an even number of photons no longer obtains. Instead, the dominant two photon decay mode of \Sing is accompanied by a three photon mode. The dominant three photon decay mode of \Trip receives a NCQED correction, but there is no corresponding two photon decay mode in the weak binding limit. These corrections to the $P_s$ three photon decay mode have a different energy distribution, but their effect is too small to explain any discrepancy between the observed and calculated values of the \Trip lifetime. Comment: Additional references |
| Databáze: | OpenAIRE |
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