The reaction π−p→K0Λ0 up to 2375 MeV/c

P -wave excited baryons from pion- and photo-induced hyperon production

“…Here we just emphasize, in Figs [20] and open circles the data from [21,22], the curves represent our fit BG2010-02. …”

“…The open circles denote the data from [21,22], the curves represent our fit BG2010-02. sured in the experiment [23] is shown in Fig.…”

“…The full curve shows the integrated fit of the differential cross section from the solution BG2010-02. The full triangles denote the total cross section calculated from [20] and the open circles from [21], [22]. b) The total cross section for the reaction π + p → K + Σ + and contributions from leading partial waves.…”

“…All curves have a clear minimum in the region 1670-1700 MeV, including the fit to γp → KΛ [112]. To emphasize the need for a forth P 11 resonance we have split the differential cross section on π − p → K 0 Λ into a low energy region (below 1750 MeV) from [20], and the high-energy part (above 1750 MeV) from [21,22]. The low-energy region exhibits a clear minimum at about 1730 MeV; the high-energy part still "sees" the low-mass peak (now at 1650 MeV) but a second minimum in the region 1850-1880 MeV is clearly present.…”

“…The dynamical Breit-Wigner parameterization of the πN elastic amplitude can be written as: [112], c) of the differential cross section for the π − p → ηn [18], of the differential cross section for the π − p → KΛ, separated into lowenergy d) [20] and high-energy e) region [21,22]…”