Evidence for an Additional Resonance in the Region of the $K^{*} (1420)$

We have observed an additional

K^{*}

resonance on the low-mass side of the

K^{*} (1420)

in the reaction

K^{+} n \to K^{+} π^{-} p

at 12

\frac{GeV}{c}

. This resonance has parameters

M \approx 1370

MeV and

Γ < 150

MeV, and is probably produced by a pion-exchange mechanism with

J^{P} = 0^{+}

; but the alternative hypotheses of a

J^{P} = 1^{-}

or a

J^{P} = 2^{+}

resonance cannot be ruled out at this time.

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Evidence for an Additional Resonance in the Region of theK*(1420)