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V. Govorun

Publications and source records attributed to V. Govorun.

2 recordsLinked to original sources

The SPHINX spectrometer

The paper describes the SPHINX facility which includes a wide-aperture magnetic spectrometer with scintillation counters and hodoscopes, proportional chambers and drift tubes, multichannel electromagnetic and hadron calorimeters, a guard system, a RICH velocity spectrometer and a hodoscopical threshold Cherenkov detector for the identification of charged secondary particles. The SPHINX spectrometer, in its last modification, had the possibility to record 3000-4000 trigger events per an accelerator burst. The spectrometer was used during the last decade in experiments with the 70GeV proton beam of the IHEP accelerator U-70.

physics.ins-det

Study of the K- -> pi0 e- nu decay

The decay K- -> pi0 e- nu has been studied using in-flight decays detected with "ISTRA+" setup operating at the 25 GeV negative secondary beam of the U-70 PS. About 130K events were used for the analysis. The lambda_+ parameter of the vector formfactor has been measured: lambda_+ = 0.0293 +- 0.0015(stat) +- 0.002(syst). The limits on the possible tensor and scalar couplings have been derived: f_T/f_+(0)=-0.044 +0.059 -0.057 (stat) f_S/f_+(0)=-0.020 +0.025 -0.016 (stat)

hep-ex