Low energy charged pion production from the deuteron

doi:10.1016/0375-9474(87)90459-3

Nuclear Physics A

Volume 466, Issues 3–4, 11–18 May 1987, Pages 612-622

https://doi.org/10.1016/0375-9474(87)90459-3 Get rights and content

Abstract

Electroproduction of positive pions from the deuteron near the threshold has been used to isolate the ¹S⁰ state of the residual nn-system. This unbound state has an energy width of about 1 MeV. Cross sections were measured at incident electron energies of 170 MeV and 183 MeV for a pion kinetic energy of 23 MeV using a flat liquid deuterium target and a magnetic pion spectrometer. The charged pion production at low energies can be well described by the Born amplitudes constructed from an effective hamiltonian with pseudovector πNN coupling. We find a good agreement between theory and experiment in contrast to previous results.

References (21)

G.G. Simon et al.
Nucl. Phys.
(1981)
I. Blomqvist et al.
Nucl. Phys.
(1977)
Ch. Schmitt et al.
Nucl. Instr. Meth.
(1985)
K. Weinand et al.
Nucl. Instr. Meth.
(1986)
H. Ehrenberg et al.
Nucl. Instr. Meth.
(1972)
L. Tiator et al.
Nucl. Phys.
(1982)
J.L. Matthews et al.
Nucl. Instr. Meth.
(1973)
J.-L. Faure et al.
Nucl. Phys.
(1984)
I. Duck
Phys. Lett.
(1975)
J.V. Noble
Phys. Lett.
(1977)

There are more references available in the full text version of this article.

Cited by (8)

Near-threshold incoherent pion photoproduction on the deuteron with final-state interaction effects
2019, Annals of Physics
Incoherent pion photoproduction on the deuteron $γ d \to π N N$ is investigated in the energy region $E_{γ}^{thr} \leq E_{γ} \leq$ 160 MeV. The model applied contains the amplitudes of the impulse approximation as well as the $N N$ and $π N$ rescattering in the final state. For the elementary $γ N \to π N$ amplitude, the unitary isobar MAID-2007 model is used. This model is parameterized in terms of invariant amplitudes and allows one to give a more reliable description of the threshold region. The half-off-shell $N N$ and $π N$ scattering amplitudes are obtained from separable representations of realistic $N N$ and $π N$ interactions, respectively. For the first time, numerical results for the linear photon asymmetry $Σ$ , vector $T_{11}$ and tensor $T_{2 M}$ ( $M = 0, 1, 2$ ) deuteron spin asymmetries for the reactions $γ d \to π^{-} p p$ , $γ d \to π^{+} n n$ , and $γ d \to π^{0} n p$ are presented. In addition, results for the unpolarized differential and total cross sections are given. We found that the influence of $N N$ rescattering is moderate in both charged-and neutral-pion production channels, whereas $π N$ rescattering is almost negligible in the charged-pion production channels which is not the case in neutral-pion production since a noticeable contribution is obtained. The calculated results for unpolarized differential and total cross sections are compared with the available experimental data and other theoretical models, and a satisfactory agreement is obtained.
An ion-implanted semiconductor strip detector for low energy pion-production experiments
1989, Nuclear Inst. and Methods in Physics Research, A
The role of final-state interaction in tensor polarization effects of the reaction γd→ pnπ
2023, Scientific Reports
Incoherent single pion electroproduction on the deuteron with polarization effects
2006, Physical Review C - Nuclear Physics
Incoherent pion photoproduction on the deuteron with polarization observables. II. Influence of final state rescattering
2005, Physical Review C - Nuclear Physics
Polarization observables of the γd → πNN Reaction in the Δ(1232)-Resonance region
2004, International Journal of Modern Physics E

View all citing articles on Scopus

^☆: Supported by the Deutsche Forschungsgemeinschaft (SFB 201).

¹: Present address : Dept. of Physics, Faculty of Science, Osaka University, Toyonaka 560, Osaka, Japan.

View full text

Low energy charged pion production from the deuteron☆

Abstract

Nucl. Phys.

Nucl. Phys.

Nucl. Instr. Meth.

Nucl. Instr. Meth.

Nucl. Instr. Meth.

Nucl. Phys.

Nucl. Instr. Meth.

Nucl. Phys.

Phys. Lett.

Phys. Lett.