A Study of Isospin = 1 Meson States Using 10-{GeV}/$c K^- K^0$ Production Data

Martin, Alan D. ; Ozmutlu, E.N. ; Baldi, R. ; et al.
Phys.Lett.B 74 (1978) 417-421, 1978.
Inspire Record 129502 DOI 10.17182/hepdata.27459

We perform an amplitude analysis of 10 GeV/ c π − p → K − K S 0 p data as a function of K − K 0 mass from threshold up to 2 GeV. We find that the A 2 and g resonances are produced dominantly by natural and unnatural parity exchange, respectively, and we determine their resonance parameters. We present further evidence for the I = 1, 4 + state A 2 ∗ (1900), in particular by isolating interference effects. The structure of S-wave K − K 0 production suggests an I = 1, 0 + state just below 1300 MeV of width about 250 MeV.

1 data table

CROSS SECTIONS FROM FITTING MASS SPECTRUM. THE RESONANT AMPLITUDE CONTRIBUTIONS ALSO GIVEN IN PAPER.