Measurements of NN → dπ very near threshold

Hutcheon, D. A.; Korkmaz, E.; Moss, G.A.; Abegg, R.; Davison, N.E.; Edwards, G.W.R.; Greeniaus, L.G.; Mack, D.; Miller, C. A.; Olsen, W.C.; Heerden, I.J. van; Ye, Yanlin

doi:10.1016/0375-9474(91)90479-p

Cited by 54 publications

(20 citation statements)

References 16 publications

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“…To the reaction pn → dπ 0 both α and β contribute with only half their strength [32]. Here η denotes the outgoing pion momentum in units of its mass.…”

Section: Resultsmentioning

confidence: 99%

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Towards a field theoretic understanding of NN → NNπ

et al. 2006

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We study the production amplitude for the reaction N N → N N π up to next-to-leading order in chiral perturbation theory using a counting scheme that takes into account the large scale introduced by the initial momentum. In particular we investigate a subtlety that arises once the leading loop contributions are convoluted with the N N wavefunctions as demanded by the non-perturbative nature of the N N interaction. We show how to properly identify the irreducible contribution of loop diagrams in such type of reaction. The net effect of the inclusion of all next-to-leading order loops is to enhance the leading rescattering amplitude by a factor of 4/3, bringing its contribution to the cross section for pp → dπ + close to the experimental value.

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“…To the reaction pn → dπ 0 both α and β contribute with only half their strength [32]. Here η denotes the outgoing pion momentum in units of its mass.…”

Section: Resultsmentioning

confidence: 99%

“…#4 Note that the data from pn → dπ 0 [32] are considerably lower than those for pp → dπ + [33,34]. It appears unclear whether this discrepancy is due to systematic uncertainties (not shown in the figure) or due to other sources [38].…”

Section: Resultsmentioning

confidence: 99%

Towards a field theoretic understanding of NN → NNπ

et al. 2006

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“…Here the cross sections for np → π 0 d are taken from Refs. [48,49]. They are in the threshold range up to η = 0.32.…”

Section: Discussionmentioning

confidence: 95%

Charge independence studied in reactions

Machner

Niskanen

2006

Nuclear Physics A

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We investigate to what extent charge independence breaking (CIB) in isospin related reactions of the type NN → dπ can or could be seen in existing data. In doing this we perform fits to global and threshold cross sections including most recent data. Applying these we point out the probable impossibility to make model independent predictions even based solely on the different threshold energies and the well known pp → dπ + . A possible discrepancy is seen between the np → dπ 0 and pp → dπ + threshold data, which may require invoking other explicitly isospin symmetry breaking interactions than the Coulomb force and different threshold energies.

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“…Pion reactions with few-nucleon systems [17][18][19][20][21]. Note that the green diamond and the blue triangle correspond to the most resent measurements from pionic deuterium atom [20,21] at η = 0.…”

Section: Pos(cd09)030mentioning

confidence: 99%