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Auerbach LB Burman RL Caldwell DO Church ED Cochran AK Donahue JB Fazely AR Garvey GT Gunasingha RM Imlay RL Kahrimanis G Louis WC Majkic R Malik A McIlhany KL Metcalf WJ Mills GB Rupnik D Sandberg VD Smith D Somodi RF Stancu I Strossman WD Sung M Tayloe R VanDalen GJ Vernon W Wadia N White DH Yellin S Yi H;LSND Collaboration 《Physical review letters》2004,92(9):091801
We observe a net beam excess of 8.7+/-6.3(stat)+/-2.4(syst) events, above 160 MeV, resulting from the charged-current reaction of nu(micro) and/or nu;(mu) on C and H in the LSND detector. No beam-related muon background is expected in this energy regime. Within an analysis framework of pi(0)-->nu(mu)nu;(mu), we set a direct upper limit for this branching ratio of Gamma(pi(0)-->nu(mu)nu;(mu))/Gamma(pi(0)-->all)<1.6 x 10(-6) at 90% confidence level. 相似文献
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Athanassopoulos C Auerbach LB Burman RL Cohen I Caldwell DO Dieterle BD Donahue JB Eisner AM Fazely A Federspiel FJ Garvey GT Gray M Gunasingha RM Imlay R Johnston K Kim HJ Louis WC Majkic R Margulies J McIlhany K Metcalf W Mills GB Reeder RA Sandberg V Smith D Stancu I Strossman W Tayloe R VanDalen GJ Vernon W Wadia N Waltz J Wang YX White DH Works D Xiao Y Yellin S 《Physical review letters》1996,77(15):3082-3085
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