Charge independence studied in $NN\to d\pi$ reactions

Abstract

We review to what extent charge independence breaking (\emph{CIB}) in isospin related reactions of the type $NN\to d\pi$ can or could be seen in existing data. In doing this we present 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 $pp\to d{\pi }^{+}$. A possible discrepancy is seen between the $np\to d{\pi }^0$ and $pp\to d{\pi }^{+}$ data, which may require invoking explicitly isospin symmetry breaking interactions.

arXiv comment20 pages, 12 pictures

References in corpus (9)

• Meson production in nucleon--nucleon collisions close to the threshold
• Charge Symmetry Violation in $pn\to d{\pi }^0$ as a Test of Chiral Effective Field Theory
• Charge symmetry breaking in n p --> d pi^0
• Combined analysis of the reactions $pp\to pp$, $\pi d\to \pi d$, and $\pi d\to pp$
• Simultaneous Measurements of the $p+d\to (A=3)+\pi$ Reactions
• Isospin breaking in the reaction np --> dpi^0 at threshold
• pi+ + d --> p + p reaction between 18 and 44 MeV
• Charge dependence of $NN\to d\pi$
• Differential Cross Sections Measurement for the $pp\to d{\pi }^{+}$ Reaction at 850 MeV/c

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