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First measurement of coherent double neutral-pion photoproduction on the deuteron at incident energies below 0.9 GeV
- Source :
- Physics Letters B, Physics Letters B, Vol 772, Iss C, Pp 398-402 (2017)
- Publication Year :
- 2016
- Publisher :
- arXiv, 2016.
-
Abstract
- The total cross sections were measured for coherent double neutral-pion photoproduction on the deuteron at incident energies below 0.9 GeV for the first time. No clear resonance-like behavior is observed in the excitation function for $W_{\gamma d}=2.38$--2.61 GeV, where the $d^*(2380)$ dibaryon resonance observed at COSY is expected to appear. The measured excitation function is consistent with the existing theoretical calculation for this reaction. The upper limit of the total cross section is found to be $0.034$~$\mu$b for the dibaryon resonance at $W_{\gamma d}=2.37$~GeV (90\% confidence level) in the $\gamma d \to \pi^0\pi^0 d$ reaction.<br />Comment: submitted to Physics Letters B
- Subjects :
- Nuclear and High Energy Physics
Particle physics
Nuclear Theory
Monte Carlo method
FOS: Physical sciences
01 natural sciences
Nuclear physics
Mass enhancement
Pion
0103 physical sciences
ABC effect
Nuclear Experiment (nucl-ex)
Nuclear Experiment
010306 general physics
Physics
Excitation function
010308 nuclear & particles physics
Bremsstrahlung
Coherent meson photoproduction
Dibaryon resonance
lcsh:QC1-999
Deuterium
Excited state
Mass spectrum
High Energy Physics::Experiment
lcsh:Physics
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- Physics Letters B, Physics Letters B, Vol 772, Iss C, Pp 398-402 (2017)
- Accession number :
- edsair.doi.dedup.....5b9b418e37d66f1a1a1bccd2b8934db2
- Full Text :
- https://doi.org/10.48550/arxiv.1610.05532