experiment 871
Brookhaven National Laboratory experiment 871 made the first observation of the
decay of the long-lived neutral kaon to an electron-positron pair,
KL0 --> e+e-, by far the
smallest non-zero branching fraction yet observed in particle physics. At 8.7 x
10-12, it betters the previous
record by two orders of magnitude. Phys. Rev. Lett.
81 (1998) 4309-4312, hep-ex/9810007.
publications
home pages
local projects
other links
technical reports
- Straws Exposed
- KL-406: analysis of etching effects. K. Lang 1992.
- Gas filtration for straws
- KL-407: Description of the high- and low-pressure gas scrubbing for E871 straws.
Marty Marcin 1992.
- Gluing and toasting straws
- UTKL-81: step-by-step instructions for epoxy attachment of inserts into straws. S. Hamilton 1993.
- Encapsulant and adhesive study
- Testing of various candidate epoxies, with company information. Scott
Graessle 1993.
- SDC production epoxy use
- UTKL-84: summary of gluing tasks with instructions and estimates of time
and amounts used. Scott Graessle 1994.
- SDC1 Position Study
- A comparision of relative acceptance (based on the E871 monte
carlo) and beam-on-chamber (from analysis of 1994 data) used to
decide the final SDC1 X position.
- PBG Converter Block
Attenuation using Muons
- PBG Calibration
- Calibration of 1995 data.
- PBG Electron ID
- kl493
- Event Overlay for E871 Data, Karol Lang, 14 pages
- kl499: Pass1 memo
- Description and results of the 1996 pass1 production,
including stripcharts for both years' datasets (64 pages,
8.3Mb uncompressed)
- Pass 1 Datasets
- Description of the stream selection cuts used for the pass1 and
subsequent strips.
- Pass 2 stripped datafiles
- Particle datasets, pipi, mumu, ee, and minbias
files on kart at SLAC.
- Pass 2 Memo
-
kl502: /srvwir/ memo
- New Alignment of the E871 Spectrometer, Scott Graessle,
~44 pages.
- Pion Interactions in E871
using the GEANT simulation.