title: Appearance of low energy resonances in CO-para-H2 inelastic collisions.
abstract: We report on crossed-beam experiments and quantum-mechanical calculations performed on the CO(j=0) + H2(j=0) → CO(j=1) + H2(j=0) system. The experimental cross sections determined in the threshold region of the CO(j=0 → j=1) transition at 3.85  cm(-1) show resonance structures in good qualitative agreement with the theoretical ones. These results suggest that the potential energy surface which describes the CO-H2 van der Waals interaction should be reinvestigated for good quantitative agreement.
authors.affiliation: Université de Bordeaux, Institut des Sciences Moléculaires, F-33400 Talence, France.
authors.forename: Simon
authors.initials: S
authors.lastname: Chefdeville
authors.forename: Thierry
authors.initials: T
authors.lastname: Stoecklin
authors.forename: Astrid
authors.initials: A
authors.lastname: Bergeat
authors.forename: Kevin M
authors.initials: KM
authors.lastname: Hickson
authors.forename: Christian
authors.initials: C
authors.lastname: Naulin
authors.forename: Michel
authors.initials: M
authors.lastname: Costes