Measurement of the Dalitz plot slope parameters for K- -> pi0 pi0 pi- decay using ISTRA+ detector

Measurement of the Dalitz plot slope parameters for K- -> pi0 pi0 pi- decay using ISTRA+ detector

The Dalitz plot slope parameters g, h and k for the K- -> pi0 pi0 pi- decay have been measured using in-flight decays detected with the ISTRA+ setup operating in the 25 GeV negative secondary beam of the U-70 PS. About 252 K events with four-momenta measured for the pi- and four involved photons...

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Veröffentlicht in:arXiv.org 2003-06
Hauptverfasser: Ajinenko, I V, Akimenko, S A, Britvich, G I, Datsko, K V, Filin, A P, Inyakin, A V, Konstantinov, A S, Konstantinov, V F, Korolkov, I Y, Leontiev, V M, Novikov, V P, Obraztsov, V F, Polyakov, V A, Romanovsky, V I, Shelikhov, V I, Smirnov, N E, Tchikilev, O G, Uvarov, V A, Yushchenko, O P, Bolotov, V N, Laptev, S V, Pastsjak, A R, A Yu Polyarush, R Kh Sirodeev
Format: Artikel
Sprache:eng
Schlagworte:
Decay
Parameters
Photons
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Zusammenfassung:The Dalitz plot slope parameters g, h and k for the K- -> pi0 pi0 pi- decay have been measured using in-flight decays detected with the ISTRA+ setup operating in the 25 GeV negative secondary beam of the U-70 PS. About 252 K events with four-momenta measured for the pi- and four involved photons were used for the analysis. The values obtained g=0.627+/-0.004(stat)+/-0.010(syst), h=0.046+/-0.004(stat)+/-0.012(syst), k=0.001+/-0.001(stat)+/-0.002(syst) are consistent with the world averages dominated by K+ data, but have significantly smaller errors.
ISSN:2331-8422
DOI:10.48550/arxiv.0205027