Low-energy π NN system
Baru V.
EPJ Web of Conferences · 2010
doi:10.1051/epjconf/20100303003 (opens in a new tab)
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Abstract
The reaction NN → NNπ is studied at low energies within chiral perturbation theory (ChPT). Special emphasis is put on p-wave pion production in different channels of NN → NNπ and Charge Symmetry Breaking (CSB) effects in pn → dπ0 recently measured at TRIUMF. A very good agreement of the p-wave amplitudes with experimental observables demonstrates the applicability of ChPT to these reactions regardless the large momentum transfer. The results of a complete calculation of CSB effects at leading order are presented. Based on this calculation we extract the strong contribution to the neutron-proton mass difference.
Abstract licence: CC BY
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