Anisimovsky, VV;
Artamonov, AV;
Bassalleck, B;
Bhuyan, B;
Blackmore, EW;
Bryman, DA;
Chen, S;
... E949 Collaboration, .; + view all
(2004)
Improved measurement of the K+->pi+nu(nu)over-bar branching ratio.
PHYS REV LETT
, 93
(3)
, Article 031801. 10.1103/PhysRevLett.93.031801.
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Abstract
An additional event near the upper kinematic limit for K+-->pi(+)nu(nu) over bar has been observed by experiment E949 at Brookhaven National Laboratory. Combining previously reported and new data, the branching ratio is B(K+-->pi(+)nu(nu) over bar)=(1.47(-0.89)(+1.30))x10(-10) based on three events observed in the pion momentum region 211<P<229 MeV/c. At the measured central value of the branching ratio, the additional event had a signal-to-background ratio of 0.9.
| Type: | Article |
|---|---|
| Title: | Improved measurement of the K+->pi+nu(nu)over-bar branching ratio |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.93.031801 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.93.031801 |
| Language: | English |
| Additional information: | 2004 The American Physical Society |
| UCL classification: | UCL |
| URI: | https://discovery.ucl.ac.uk/id/eprint/87211 |
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