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How uncertainties in the atomic potential affect DIRAC results
DIRAC experiment reconstructs lifetime of π +π − atoms (A2π, pionium) through the measurement of their ionization (break-up) probability Pion in a thin target. Method relies on the fact that dependence Pion(τ) can be calculated with sufficient precision. The value of Pion is a result of competitive...
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| Lenguaje: | eng |
| Publicado: |
2014
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| Acceso en línea: | http://cds.cern.ch/record/1987122 |
| Sumario: | DIRAC experiment reconstructs lifetime of π +π − atoms (A2π, pionium) through the measurement of their ionization (break-up) probability Pion in a thin target. Method relies on the fact that dependence Pion(τ) can be calculated with sufficient precision. The value of Pion is a result of competitive processes: pionium annihilation vs. pionium ionization in the Coulomb field of target atoms. This note estimates impact of uncertainties in the potential of a target atom on DIRAC results. |
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