Extraction of kaon formfactors from K super(-)--> mu super(-)[nu] gamma decay at ISTRA+ setup

Extraction of kaon formfactors from K super(-)--> mu super(-)[nu] gamma decay at ISTRA+ setup

The radiative decay K super(-)--> mu super(-)[nu] sub() mu gamma has been studied at ISTRA+ setup in a new kinematic region. About 22K events of K super(-)--> mu super(-)[nu] sub() mu gamma have been observed. The sign and value of F sub()VF sub(A) have been measured for the first time. The re...

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Veröffentlicht in:Physics letters. B 2011-01, Vol.695 (1-4), p.59-66
Hauptverfasser: Duk, V A, Bolotov, V N, Lebedev, V A, Khudyakov, A A, Makarov, AI, Polyarush, AYu, Novikov, V P, Akimenko, SA, Britvich, GI, Filin, AP, Inyakin, A V, Korolkov, IYa, Leontiev, V M, Obraztsov, V F, Polyakov, V A, Romanovsky, VI, Tchikilev, O G, Uvarov, V A, Yushchenko, O P
Format: Artikel
Sprache:eng
Schlagworte:
Decay
Elementary particles
Extraction
Kaons
Kinematics
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Zusammenfassung:The radiative decay K super(-)--> mu super(-)[nu] sub() mu gamma has been studied at ISTRA+ setup in a new kinematic region. About 22K events of K super(-)--> mu super(-)[nu] sub() mu gamma have been observed. The sign and value of F sub()VF sub(A) have been measured for the first time. The result is F sub()VF sub(A)=0.21+/-0.04(stat)+/-0.04(syst ).
ISSN:0370-2693
DOI:10.1016/j.physletb.2010.10.043