2005
DOI: 10.1140/epja/i2004-10131-8
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Parity-nonconserving observables in thermal neutron capture on a proton

Abstract: We calculate parity nonconserving observables in the processes where a neutron is captured on a proton at the threshold energy radiating a photon. Various potential models such as Paris, Bonn and Argonne v18 are used for the strong interactions, and the meson-exchange description is employed for the weak interactions between hadrons. The photon polarization P γ in the unpolarized neutron capture process and photon asymmetry A γ in the polarized neutron capture process are obtained in terms of the weak meson-nu… Show more

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Cited by 20 publications
(32 citation statements)
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“…= 2.5 × 10 −8 which agrees well with a recent calculation [48] and is also consistent with pre-80's predictions, e.g., Refs. [8,[49][50][51][52], around (2-5) × 10 −8 , (see Ref.…”
Section: A a P P L In P P Scatteringsupporting
confidence: 92%
See 1 more Smart Citation
“…= 2.5 × 10 −8 which agrees well with a recent calculation [48] and is also consistent with pre-80's predictions, e.g., Refs. [8,[49][50][51][52], around (2-5) × 10 −8 , (see Ref.…”
Section: A a P P L In P P Scatteringsupporting
confidence: 92%
“…[22,48], the CD-Bonn and Bonn-B calculations give predictions two times larger, and the Bonn calculation even enhances by an order of magnitude. The difference is mostly due to the large variations of these models in the 1 P 1 channel at short distances [48]. However, in the EFT treatment, this model-dependence can be absorbed in the Danilov parameters and all that matters is the result in Eq.…”
Section: A a P P L In P P Scatteringmentioning
confidence: 91%
“…In this model the only significant contribution to the NPDGamma asymmetry comes from weak pion exchange. The relation between the measured asymmetry and the DDH weak meson couplings is [5,11,[38][39][40][41] …”
Section: Npdgamma Theorymentioning
confidence: 99%
“…Theoretical estimations of A γ have been extensively worked out with the DDH potential [6,7,8,9]. The results with various strong interaction models turn out basically identical.…”
Section: Introductionmentioning
confidence: 97%