Total and differential cross sections of η-production in proton-deuteron fusion for excess energies between Qη=13MeV and Qη=81MeV P. Adlarson, W. Augustyniak, W. Bardan [et al.]
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ArticleContent type: Текст Media type: электронный Subject(s): мезоны | протон-дейтронные взаимодействия | ηмезоныGenre/Form: статьи в журналах Online resources: Click here to access online
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Physics Letters B Vol. 782. P. 297-304Abstract: New data on both total and differential cross sections of the production of η mesons in proton-deuteron fusion to 3Heη in the excess energy region 13.6MeV≤Qη≤80.9MeV are presented. These data have been obtained with the WASA-at-COSY detector setup located at the Forschungszentrum Jülich, using a proton beam at 15 different beam momenta between pp=1.60GeV/c and pp=1.74GeV/c. While significant structure of the total cross section is observed in the energy region 20MeV≲Qη≲60MeV, a previously reported sharp variation around Qη≈50MeV cannot be confirmed. Angular distributions show the typical forward-peaking that was reported elsewhere. For the first time, it is possible to study the development of these angular distributions with rising excess energy over a large interval.
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New data on both total and differential cross sections of the production of η mesons in proton-deuteron fusion to 3Heη in the excess energy region 13.6MeV≤Qη≤80.9MeV are presented. These data have been obtained with the WASA-at-COSY detector setup located at the Forschungszentrum Jülich, using a proton beam at 15 different beam momenta between pp=1.60GeV/c and pp=1.74GeV/c. While significant structure of the total cross section is observed in the energy region 20MeV≲Qη≲60MeV, a previously reported sharp variation around Qη≈50MeV cannot be confirmed. Angular distributions show the typical forward-peaking that was reported elsewhere. For the first time, it is possible to study the development of these angular distributions with rising excess energy over a large interval.
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