Charge exchangedp→ (pp)nreaction study at 1.75 A GeV/c by the STRELA spectrometer

Abstract

Abstract. The differential cross sections of the charge exchange reaction dp → (pp)n has been measured at 1.75 GeV/c momentum per nucleon for small transferred momenta using the one arm magnetic spectrometer STRELA at the Nuclotron accelerator. The ratio of the differential cross section of the charge exchange reaction dp → (pp)n to that of the np → pn elementary process is discussed in order to estimate the spin-dependent part of the np → pn charge exchange amplitude on the basis of dp → (pp)n data. The np → pn amplitude turned out to be predominantly spin-dependent.

Charge exchange $$\varvec{{dp \rightarrow (pp)n}}$$ reaction study at 1.75 A GeV/c by the STRELA spectrometer

“…It should be emphasized that the obtained contribution, of course, depends on the elementary np → pn charge exchange cross section which is taken from another experiment and on the systematical errors of approximately 5% which is due to the fit procedure. Preliminary data published in [24,25] are not contradicting the presented results.…”