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Precision determination of the dpi -> NN transition strength at threshold
- Source :
- Physical review letters 104, 142503 (2010). doi:10.1103/PhysRevLett.104.142503, Physical Review Letters, Physical Review Letters, American Physical Society, 2010, 104 (14), pp.142503. ⟨10.1103/PhysRevLett.104.142503⟩, Physical Review Letters, 2010, 104 (14), pp.142503. ⟨10.1103/PhysRevLett.104.142503⟩
- Publication Year :
- 2010
-
Abstract
- An unusual but effective way to determine at threshold the dpi -> NN transition strength is to exploit the hadronic ground-state broadening in pionic deuterium, accessible by x-ray spectroscopy. The broadening is dominated by the true absorption channel dpi- -> nn, which is related to s-wave pion production pp -> dpi+ by charge symmetry and detailed balance. Using the exotic atom circumvents the problem of Coulomb corrections to the cross section as necessary in the production experiments. Our dedicated measurement finds (1171+23/-49) meV for the broadening yielding (252+5/-11) \mub.<br />Comment: 4 pages, 2 figures, 1 table
- Subjects :
- Physics
[PHYS.PHYS.PHYS-ATOM-PH]Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph]
010308 nuclear & particles physics
Hadron
General Physics and Astronomy
Charge (physics)
7. Clean energy
01 natural sciences
Pion
Deuterium
0103 physical sciences
Coulomb
ddc:550
Production (computer science)
Absorption (logic)
Physics::Atomic Physics
Atomic physics
010306 general physics
Nuclear Experiment
Exotic atom
Subjects
Details
- Language :
- English
- ISSN :
- 00319007 and 10797114
- Database :
- OpenAIRE
- Journal :
- Physical review letters 104, 142503 (2010). doi:10.1103/PhysRevLett.104.142503, Physical Review Letters, Physical Review Letters, American Physical Society, 2010, 104 (14), pp.142503. ⟨10.1103/PhysRevLett.104.142503⟩, Physical Review Letters, 2010, 104 (14), pp.142503. ⟨10.1103/PhysRevLett.104.142503⟩
- Accession number :
- edsair.doi.dedup.....7b4c5f8a4155e1cfd0f2974564ee9a5c