Photoproduction of neutral pions near threshold from three-body targets

1978 ◽  
Vol 17 (6) ◽  
pp. 2159-2162 ◽  
Author(s):  
P. Bosted ◽  
J. M. Laget
Keyword(s):  
Neutral Pions ◽  
Three Body ◽  
Near Threshold

Photoproduction of Two Neutral Pions from Hydrogen Near Threshold

1971 ◽  
Vol 30 (3) ◽  
pp. 595-601 ◽  
Author(s):  
Toshio Kitagaki ◽  
Yuji Ohnuki ◽  
Syo Tanaka ◽  
Saburo Homma ◽  
Koya Abe
Keyword(s):  
Neutral Pions ◽  
Near Threshold

scholarly journals Possible generation of heat from nuclear fusion in Earth’s inner core

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Mikio Fukuhara
Keyword(s):  
Inner Core ◽  
Nuclear Fusion ◽  
Radioactive Decay ◽  
Neutral Pions ◽  
Attraction Effects ◽  
Pass Through ◽  
Earth’S Interior ◽  
Three Body ◽  
Earth's Interior ◽  
The Universe

Abstract The cause and source of the heat released from Earth’s interior have not yet been determined. Some research groups have proposed that the heat is supplied by radioactive decay or by a nuclear georeactor. Here we postulate that the generation of heat is the result of three-body nuclear fusion of deuterons confined in hexagonal FeDx core-centre crystals; the reaction rate is enhanced by the combined attraction effects of high-pressure (~364 GPa) and high-temperature (~5700 K) and by the physical catalysis of neutral pions: 2D + 2D + 2D → 21H + 4He + 2 "Equation missing" + 20.85 MeV. The possible heat generation rate can be calculated as 8.12 × 1012 J/m3, based on the assumption that Earth’s primitive heat supply has already been exhausted. The H and He atoms produced and the anti-neutrino "Equation missing" are incorporated as Fe-H based alloys in the H-rich portion of inner core, are released from Earth’s interior to the universe, and pass through Earth, respectively.

Photoproduction of neutral pions on protons near threshold

1969 ◽  
Vol 60 (3) ◽  
pp. 467-480 ◽  
Author(s):  
W. Hitzeroth
Keyword(s):  
Neutral Pions ◽  
Near Threshold

Coulomb Faddeev calculation of d+p→p+p+n spectra near threshold and three-body effects

1988 ◽  
Vol 37 (3) ◽  
pp. 927-933 ◽  
Author(s):  
P. Doleschall ◽  
H. Kröger ◽  
R. J. Slobodrian
Keyword(s):  
Faddeev Calculation ◽  
Three Body ◽  
Near Threshold

scholarly journals Power counting for three-body decays of a near-threshold state

2015 ◽  
Vol 91 (5) ◽  
Author(s):  
Mohammad H. Alhakami ◽  
Michael C. Birse
Keyword(s):  
Power Counting ◽  
Three Body ◽  
Near Threshold

scholarly journals PAIRWISE FINAL STATE INTERACTIONS IN THE p d→p dη REACTION NEAR THRESHOLD

2009 ◽  
Vol 24 (29) ◽  
pp. 2319-2329 ◽  
Author(s):  
N. J. UPADHYAY ◽  
B. K. JAIN ◽  
K. P. KHEMCHANDANI ◽  
N. G. KELKAR
Keyword(s):  
Final State Interaction ◽  
Scattering Length ◽  
Coulomb Repulsion ◽  
Low Energy ◽  
Final State ◽  
Energy Data ◽  
New Findings ◽  
Scattering Lengths ◽  
Three Body ◽  
Near Threshold

A model for the p d→p dη reaction published earlier, including the final state interaction (FSI) of all particles, is revisited to investigate the low energy data on this reaction. The three-body problem of p–d–η scattering in the final state is approximated in terms of pairwise interactions between the three particles in the final state. Apart from a comparison with some preliminary data, two new findings relevant to the near threshold data analysis are reported. The first one points toward the limitations of an FSI factor used conventionally to extract the eta-deuteron scattering length and infer subsequently on the existence of eta-mesic states. The second result emphasizes the role of the p–d FSI and the strong Coulomb repulsion near threshold. Finally, a comparison of the above model calculation with low energy data, excludes very large eta-nucleon scattering lengths.

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