Total [ital d]+[ital d][r arrow][alpha]+[eta] cross sections near threshold
- Institut de Physique Nucleaire, IN2P3-CNRS, 91406 Orsay (France) Laboratoire National Saturne, CEN Saclay, 91191 Gif-sur-Yvette (France) Institut fuer Strahlen und Kernphysik, 53115 Bonn (Germany) IN2P3-CNRS, 75016 Paris (France)
The total cross section for [eta] production in deuteron-deuteron interactions has been measured at four different kinetic energies, from 0.7 MeV to 3.7 MeV above threshold. The squared amplitude is consistent with a constant value of [vert bar][ital f][vert bar][sup 2]=(24.6[plus minus]1.2[plus minus]1.7) nb/sr close to threshold (14[lt][ital p][sub [eta]][lt]40 MeV/[ital c]). Assuming that the [pi][sup 0]-[eta] mixing reaction mechanism is dominant, this result allows a prediction of ([ital d][sigma]/[ital d][Omega])[sub [pi][sup 0]]=(8.3[plus minus]0.5 [plus minus]0.6) pb/sr for the cross section of the isospin-forbidden reaction [ital d]+[ital d][r arrow][alpha]+[pi][sup 0] at the [eta]-threshold energy.
- OSTI ID:
- 7015048
- Journal Information:
- Physical Review, C (Nuclear Physics); (United States), Vol. 50:2; ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
DEUTERIUM TARGET
DEUTERON REACTIONS
TOTAL CROSS SECTIONS
ALPHA PARTICLES
ETA MESONS
ISOSPIN
KINETIC ENERGY
PIONS NEUTRAL
BOSONS
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
ELEMENTARY PARTICLES
ENERGY
HADRONS
MESONS
NUCLEAR REACTIONS
PARTICLE PROPERTIES
PIONS
PSEUDOSCALAR MESONS
TARGETS
663440* - D-
T-
& He-induced Reactions & Scattering- (1992-)
662340 - Hadron Interactions- (1992-)