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A. S. Levchenko A. N. Khotjantsev A. P. Ivashkin M. Abe M. A. Aliev V. V. Anisimovsky M. Aoki I. Arai Y. Asano T. Baker M. Blecher P. Depommier M. Hasinoff K. Horie H. C. Huang Y. Igarashi T. Ikeda J. Imazato M. M. Khabibullin Yu. G. Kudenko Y. Kuno L. S. Lee G. Y. Lim J. A. Macdonald D. R. Marlow C. R. Mindas O. V. Mineev C. Rangacharyulu S. Shimizu Y. -M. Shin A. Suzuki A. Watanabe N. V. Yershov T. Yokoi 《Physics of Atomic Nuclei》2002,65(12):2232-2237
The form factors of the decay K + → π 0 e + ν e (K e3) have been determined from the comparison of the experimental and Monte Carlo Dalitz distributions containing about 105 K e3 events. The following values of the parameters were obtained: λ +=0.0278±0.0017 (stat.)±0.0015 (syst.), |f S/f +(0)|=0.0040±0.0160 (stat.)±0.0067 (syst.), and |f T/f +(0)|=0.019±0.080 (stat.)±0.038 (syst.). Both scalar f S and tensor f T form factors are consistent with the Standard Model predictions of zero values. 相似文献
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We report the results of the measurement of T-violating transverse muon polarization in the decays K +→μ + ν μ π 0 (K μ3) and K +→μ + ν μ γ(K μ2γ) performed in experiment E246 at KEK. The preliminary results obtained for the entire data set taken in the period 1996–2000 are consistent with no T violation in both decays.
相似文献3.
Abe M Aliev M Anisimovsky V Aoki M Asano Y Baker T Blecher M Depommier P Hasinoff M Horie K Igarashi Y Imazato J Ivashkin AP Khabibullin MM Khotjantsev AN Kudenko YG Kuno Y Lee KS Levchenko A Lim GY Macdonald JA Mineev OV Okorokova N Rangacharyulu C Shimizu S Shin YH Shin YM Sim KS Yershov N Yokoi T;KEK-E Collaboration 《Physical review letters》2004,93(13):131601
A search for T-violating transverse muon polarization (P(T)) in the K+-->pi(0)mu(+)nu decay was performed using kaon decays at rest. A new improved value P(T)=-0.0017+/-0.0023(stat)+/-0.0011(syst) was obtained giving an upper limit |P(T)|<0.0050. The T-violation parameter was determined to be Imxi=-0.0053+/-0.0071(stat)+/-0.0036(syst) giving an upper limit |Imxi|<0.016. 相似文献
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Anisimovsky VV Artamonov AV Bassalleck B Bhuyan B Blackmore EW Bryman DA Chen S Chiang IH Christidi IA Cooper PS Diwan MV Frank JS Fujiwara T Hu J Ivashkin AP Jaffe DE Kabe S Kettell SH Khabibullin MM Khotjantsev AN Kitching P Kobayashi M Komatsubara TK Konaka A Kozhevnikov AP Kudenko YG Kushnirenko A Landsberg LG Lewis B Li KK Littenberg LS Macdonald JA Mildenberger J Mineev OV Miyajima M Mizouchi K Mukhin VA Muramatsu N Nakano T Nomachi M Nomura T Numao T Obraztsov VF Omata K Patalakha DI 《Physical review letters》2004,93(3):031801
An additional event near the upper kinematic limit for K+-->pi(+)nunu; has been observed by experiment E949 at Brookhaven National Laboratory. Combining previously reported and new data, the branching ratio is B(K+-->pi(+)nunu;)=(1.47(+1.30)(-0.89))x10(-10) based on three events observed in the pion momentum region 211相似文献
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