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The reaction np arrow right pp pi super(-) from threshold up to 570 MeV

Daum, M ; Finger, M ; Finger, M Jr ; Franz, J ; Heinsius, F H ; Janata, A ; Konigsmann, K ; Lacker, H ; Lehar, F ; Schmitt, H ; Schweiger, W ; Sereni, P ; Slunecka, M

The European physical journal. C, Particles and fields, 2002-03, Vol.23 (1), p.43-59 [Periódico revisado por pares]

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Título:
The reaction np arrow right pp pi super(-) from threshold up to 570 MeV
Autor: Daum, M ; Finger, M ; Finger, M Jr ; Franz, J ; Heinsius, F H ; Janata, A ; Konigsmann, K ; Lacker, H ; Lehar, F ; Schmitt, H ; Schweiger, W ; Sereni, P ; Slunecka, M
Assuntos: Acceptance ; Angular distribution ; Asymmetry ; Cross sections ; Invariants ; Mass distribution ; Pions ; Thresholds
É parte de: The European physical journal. C, Particles and fields, 2002-03, Vol.23 (1), p.43-59
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
Descrição: The reaction np arrow right pp pi super(-) has been studied in a kinematically complete measurement with a large acceptance time-of-flight spectrometer for incident neutron energies between threshold and 570 MeV. The proton-proton invariant mass distributions show a strong enhancement due to the pp( super(1)S sub(0)) final state interaction. A large anisotropy was found in the pion angular distributions in contrast to the reaction pp arrow right pp pi super(0). At small energies, a large forward/backward asymmetry has been observed. From the measured integrated cross section sigma (np arrow right pp pi super(-)), the isoscalar cross section sigma sub(01) has been extracted. Its energy dependence indicates that mainly partial waves with Sp final states contribute.
Idioma: Inglês

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