Triplet np Final State Interactions at Large Momentum Transfers

Abstract

Using the simple relation between the np scattering and bound state wave functions, the spin-triplet contributions to the pp -> pi+ (pn) and backward dp -> p(pn) reactions are estimated for low np excitation energies. The good agreement with the pion production data at 400 and 450 MeV over a range of angles shows that spin-singlet final states cannot be more than of the order of 10%. On the other hand it is seen that the spin-singlet states must provide about 30% of the strength in pion production at 1 GeV as well as deuteron-proton backward scattering at 1.6 GeV.

14 pages, LaTeX type, includes 4 EPS figures. Submitted to Physics Letters B

Cited by in corpus (13)

• The pion-nucleon scattering lengths from pionic deuterium
• Scattering Wave Functions at Bound State Poles
• Cross section and analyzing power of pol{p}p -> pn pi+ near threshold
• A Possibility to Observe Short-Range NN Properties in the Deuteron Breakup $pd\to ppn$
• Observation of strong final-state effects in pi+ production in pp collisions at 400 MeV
• Model-independent analysis of the neutron-proton final-state interaction region in the pp -> pn pi^+ reaction
• Detailed comparison of the pp -> π^+pn and pp -> π^+d reactions at 951 MeV
• Precision measurements of the pp\to π^+pn and pp\to π^+d reactions: importance of long-range and tensor force effects
• Spin-triplet final-state dominance in the pp -> pn pi+ reaction at 492 MeV
• Bound and Unbound Wave Functions at Short Distances
• Singlet-to-triplet ratio in the deuteron breakup reaction $pd\to pnp$ at 585 MeV
• Comparison of the pp -> pi+ pn and pp -> pi+ d production rates
• Phenomenological study of the pp -> pi+ pn reaction