AMSTERDAM-CERN-NIJMEGEN-OXFORD
K- P --> KBAR0 N(1700B)0
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Partial Wave Analysis of the Low Mass (pi+ pi- p) System Produced in K- p Interactions at 4.2-GeV/c

The AMSTERDAM-CERN-NIJMEGEN-OXFORD collaboration Heinen, P.M. ; Engelen, J.J ; Kittel, E.W. ; et al.
Nucl.Phys.B 122 (1977) 443-463, 1977.
Inspire Record 124706 DOI 10.17182/hepdata.35430

A partial-wave analysis of the low-mass ( π + π − p) system produced in the reaction K − p → K − ( π + π − p) at 4.2 GeV/ c incident momentum is performed in order to study the two ( π + π − p) enhancements around 1500 and 1700 MeV. It is found that the low-mass ( π + π − p) system can be described using the spin-parity states J P = 1 2 + , 3 2 − and 5 2 + only. In the 1500 MeV region contributions are observed from the 1 2 + wave decaying into pϵ and the 3 2 − wave decaying into Δ ++ π − ; in the 1700 MeV region contributions are found from the 1 2 + wave decaying into Δ ++ π − , the 3 2 − wave decaying into pϵ, and the 5 2 + wave decaying into pϵ.

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