pdgLive Home   >   LIGHT UNFLAVORED MESONS ($\mathit S$ = $\mathit C$ = $\mathit B$ = 0)   >   ${{\mathit a}_{{{2}}}{(1320)}}$   >   ${{\mathit K}}{{\overline{\mathit K}}}$ MODE

${{\mathit K}}{{\overline{\mathit K}}}$ MODE

INSPIRE   PDGID:

M012W2

VALUE (MeV) EVTS DOCUMENT ID TECN CHG  COMMENT $\bf{ 109.8 \pm2.4}$ OUR AVERAGE $112$ $\pm20$ 4700 1, 2 CLELAND 1982 B SPEC + 50 ${{\mathit \pi}^{+}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}^{+}}{{\mathit p}}$ $120$ $\pm25$ 5200 1, 2 CLELAND 1982 B SPEC - 50 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}^{-}}{{\mathit p}}$ $106$ $\pm4$ 4000 CHABAUD 1980 SPEC - 17 ${{\mathit \pi}^{-}}$ ${}^{}\mathrm {A}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}^{-}}{}^{}\mathrm {A}$ $126$ $\pm11$ 11000 CHABAUD 1978 SPEC - 9.8 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{-}}{{\mathit K}_S^0}$ ${{\mathit p}}$ $101$ $\pm8$ 4730 CHABAUD 1978 SPEC - 18.8 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{-}}{{\mathit K}_S^0}$ ${{\mathit p}}$ $113$ $\pm4$ 1, 3 MARTIN 1978 D SPEC - 10 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}^{-}}{{\mathit p}}$ $105$ $\pm8$ 2724 3 MARGULIE 1976 SPEC - 23 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{-}}{{\mathit K}_S^0}$ ${{\mathit p}}$ $113$ $\pm19$ 730 FOLEY 1972 CNTR - 20.3 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{-}}{{\mathit K}_S^0}$ ${{\mathit p}}$ $123$ $\pm13$ 1500 3 GRAYER 1971 ASPK - 17.2 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{-}}{{\mathit K}_S^0}$ ${{\mathit p}}$ • • We do not use the following data for averages, fits, limits, etc. • • $120$ $\pm15$ 870 4 SCHEGELSKY 2006 A RVUE 0 ${{\mathit \gamma}}$ ${{\mathit \gamma}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ $121$ $\pm51$ 1000 1, 2 CLELAND 1982 B SPEC + 30 ${{\mathit \pi}^{+}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}^{+}}{{\mathit p}}$ $110$ $\pm18$ 350 HYAMS 1978 ASPK + 12.7 ${{\mathit \pi}^{+}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}_S^0}$ ${{\mathit p}}$ 1  From a fit to $\mathit J{}^{P} = 2{}^{+}$ partial wave. 2  Number of events evaluated by us. 3  Width errors enlarged by us to 4${}\Gamma /\sqrt {\mathit N }$; see the note with the ${{\mathit K}^{*}{(892)}}$ mass. 4  From analysis of L3 data at 91 and $183 - 209$ GeV.

References