Document Detail

Observation of the decay K- --> pi(-)mu(+)mu(-) and measurements of the branching ratios for K+/- --> pi(+/-)mu(+)mu(-).
MedLine Citation:
PMID:  11909394     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Using data collected with the HyperCP (E871) spectrometer during the 1997 fixed-target run at Fermilab, we report the first observation of the decay K--->pi(-)mu(+)mu(-) and new measurements of the branching ratios for K+/--->pi(+/-)mu(+)mu(-). By combining the branching ratios for the decays K+-->pi(+)mu(+)mu(-) and K--->pi(-)mu(+)mu(-), we measure Gamma(K+/--->pi(+/-)mu(+)mu(-))/Gamma(K+/--->all) = (9.8+/-1.0+/-0.5)x10(-8). The CP asymmetry between the rates of the two decay modes is [Gamma(K+-->pi(+)mu(+)mu(-))-Gamma(K--->pi(-)mu(+)mu(-))]/[Gamma(K+-->pi(+)mu(+)mu(-))+Gamma(K--->pi(-)mu(+)mu(-))] = -0.02+/-0.11+/-0.04.
H K Park; R A Burnstein; A Chakravorty; A Chan; Y C Chen; W S Choong; K Clark; E C Dukes; C Durandet; J Felix; G Gidal; P Gu; H R Gustafson; C Ho; T Holmstrom; M Huang; C James; C M Jenkins; D M Kaplan; L M Lederman; N Leros; M J Longo; F Lopez; L Lu; W Luebke; K B Luk; K S Nelson; J P Perroud; D Rajaram; H A Rubin; P K Teng; J Volk; C White; S White; P Zyla;
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Publication Detail:
Type:  Journal Article     Date:  2002-02-28
Journal Detail:
Title:  Physical review letters     Volume:  88     ISSN:  0031-9007     ISO Abbreviation:  Phys. Rev. Lett.     Publication Date:  2002 Mar 
Date Detail:
Created Date:  2002-03-22     Completed Date:  2002-04-29     Revised Date:  2003-11-03    
Medline Journal Info:
Nlm Unique ID:  0401141     Medline TA:  Phys Rev Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  111801     Citation Subset:  -    
University of Michigan, Ann Arbor, Michigan 48109, USA.
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