Structure in two_pion production in the d d -> alpha X reaction

Abstract

A model for the d d -> alpha pi pi reaction, based on two parallel N N -> d pi reactions, is extended to incorporate a complete set of input amplitudes. While low-energy cross sections are underestimated, the rich structure observed in the alpha-particle momentum distributions for 0.8 < T_d < 1.9 GeV (the ABC effect) is extraordinarily well reproduced. In addition, a recent measurement of deuteron analyzing powers agrees quite well with our predictions, both in frequency and magnitude of the oscillations.

23 pages, LaTeX2e, 6 PS figures, submitted to PRC

References in corpus (4)

• Femtometer Toroidal Structures in Nuclei
• Eta-Helium Quasi-Bound States
• Study of the ABC Enhancement in the d d -> alpha X reaction
• An explanation of the ABC enhancement in the dd -> alpha X reaction at intermediate energies

Cited by in corpus (15)

• Double-Pionic Fusion of Nuclear Systems and the ABCEffect -- Aproaching a Puzzle by Exclusive and Kinematically Complete Measurements
• Exclusive Measurements of $pd{\to }^{3}He\pi \pi$ : the $ABC$ Effect Revisited
• Near threshold eta meson production in the d+d->alpha+eta reaction
• Survey of charge symmetry breaking operators for dd -> alpha pi0
• Delta Delta Excitation in Proton-Proton Induced pi0pi0 Production
• ABC Resonance Structure in the Double-Pionic Fusion to 4He
• Exclusive Measurements of pp -> dpi+pi0: Double-Pionic Fusion without ABC Effect
• Exclusive measurement of two-pion production in the dd --> 4Hepipi reaction
• Resonance Structure in the $\gamma \gamma$ Invariant Mass Spectrum in $p$C- and $d$C-Interactions
• Has charge symmetry breaking been observed in the d d -> alpha pi0 reaction?
• Resonance-like coherent production of a pion pair in the reaction $pd\to pd\pi \pi$ in the GeV region
• Production of isoscalar pion pairs in the pd -> 3He pi pi reaction near threshold
• Two-pion production in deuteron-deuteron collisions at low energies
• The ABC Effect in Double-Pionic Nuclear Fusion and a pn Resonance as its Possible Origin
• Multi-pion production in the d d -> alpha X reaction