Evidence for a (Kππ) resonance with a mass of 1.230 GeV/c2

Study ofp¯−pAnnihilations intoKandπMesons at 3.

“…Among these are the ККж enhancements at 1280 MeV 24 and 1410 MeV, 23 and the three Кжж effects at 1175 MeV, 25 1215 MeV, 26 and 1270 MeV. 27 A detailed study has been conducted to search for these resonances in our data since these enhancements are all in a mass region accessible to the present experiment.…”

p¯−pAnnihilations toKandπMesons at 2.7 GeV/c

“…30 In Tf~p interactions 31 and p-p interactions 5 a neutral KKTT resonance has been reported with a mass of 1280 MeV. Figure 11 shows the neutral KKTT effective mass distribution for reactions (3) and (4).…”

“…An enhancement in the neutral \I Z \ -\ KTTTT system near 1215 MeV has been reported in p-p interactions at rest. 28 The results of their analysis showed that this effect decayed via the K*TT and Kp modes. Figure 9 shows our neutral \I Z \ = | KTTTT effective mass distribution; the shaded area represents those events which have a K*TT or Kp combination, where the i£* and p are defined by 850<M(XTT)<930 MeV and 6^<M{TTTT) <820 MeV.…”

ReactionK+p→K+pπ+Bomse1, Borenstein2, Cole3 et al. 1967Phys. Rev.11000View full textAdd to dashboardCite

“…A KTTT enhancement at 1215 MeV has been reported by a Columbia-Rutgers group 13 and a CERN group. 14 at rest: pp -» KKTTTT with at least one neutral K meson decaying by a two-pion mode. Furthermore, a CERN group 15 has also reported a 1270-MeV enhancement in KTTT spectra from the reaction pp -» K°K ± T^T + T~T°.…”