Charge independence studied in NN to Pi reactions

Machner, H.; Niskanen, J. A.

doi:10.1016/j.nuclphysa.2006.07.034

Journal Article

PreJuSER-55355

Charge independence studied in NN to Pi reactions

Machner, H.FZJ* ; Niskanen, J. A.FZJ*

2006
North-Holland Publ. Co. Amsterdam

Nuclear physics <Amsterdam> / A 776, 172 (2006) [10.1016/j.nuclphysa.2006.07.034]

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Please use a persistent id in citations: http://hdl.handle.net/2128/10607 doi:10.1016/j.nuclphysa.2006.07.034

Abstract: We investigate to what extent charge independence breaking (CIB) in isospin related reactions of the type NN -> d pi 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 -> d pi(+). A possible discrepancy is seen between the np -> d pi(0) and pp -> d pi(+) threshold data, which may require invoking other explicitly isospin symmetry breaking interactions than the Coulomb force and different threshold energies. (c) 2006 Published by Elsevier B.V.

Keyword(s): p n: exclusive reaction ; p p: exclusive reaction ; deuteron: hadroproduction ; pi: hadroproduction ; isospin ; charge dependence ; cross section: asymmetry ; correction: Coulomb ; kinematics ; channel cross section: momentum dependence ; anisotropy ; numerical calculations: interpretation of experiments ; p p --> deuteron pi+ ; p n --> deuteron pi0 ; pion production (auto) ; isospin symmetry (auto) ; charge independence breaking (auto)