MEASUREMENT OF THE BRANCHING RATIO OF THE DECAY K(L)(0)-]MU-MU

被引:22
作者
AKAGI, T
FUKUHISA, R
HEMMI, Y
INAGAKI, T
ISHIKAWA, K
KISHIDA, T
KOBAYASHI, M
KOMATSUBARA, TK
KUZE, M
SAI, F
SATO, T
SHINKAWA, T
SUEKANE, F
TAKAMATSU, K
TOYOURA, J
YAMAMOTO, SS
YOSHIMURA, Y
机构
[1] UNIV TOKYO,DEPT PHYS,TOKYO 113,JAPAN
[2] KYOTO UNIV,DEPT PHYS,KYOTO 606,JAPAN
[3] KEK NAT LAB HIGH ENERGY PHYS,NATL LAB HIGH ENERGY PHYS,TSUKUBA 305,JAPAN
关键词
D O I
10.1103/PhysRevLett.67.2618
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We observed 177.8 K(L)0 --> mu-mu events after background subtraction of 1.2 events in an experiment to search for the decays K(L) --> mu-e and ee at the KEK 12-GeV Proton Synchrotron. Normalizing to the decay K(L)0 --> pi+pi- the branching ratio B(K(L)0 --> mu-mu) = [7.9 +/- 0.6(stat) +/- 0.3(syst)] x 10(-9) was obtained.
引用
收藏
页码:2618 / 2621
页数:4
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