Search for the decay {ital K}{sup +}{bold {searrow}{pi}}{sup +}{bold {nu}{bar {nu}}}
Journal Article
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· Physical Review Letters
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- Brookhaven National Laboratory, Upton, New York 11973 (United States)
- Medium Energy Physics Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
- Joseph Henry Laboratories, Princeton University, Princeton, New Jersey 08544 (United States)
- TRIUMF, Vancouver, British Columbia, V6T 2A3 (CANADA)
An upper limit on the branching ratio for the decay {ital K}{sup +}{r_arrow}{pi}{sup +}{nu}{nu} is set at 2.4{times}10{sup {minus}9} at the 90{percent} C.L. using pions in the kinematic region 214 MeV/{ital c}{lt}{ital P}{sub {pi}}{lt}231 MeV/ {ital c}. An upper limit of 5.2{times}10{sup {minus}10} is found on the branching ratio for decays {ital K}{sup +}{r_arrow}{pi}{sup +}{ital X}{sup 0}, where {ital X}{sup 0} is any massless, weakly interacting neutral particle. Limits are also set for cases where {ital M}{sub {ital X}{sup 0}}{approx_gt}0. {copyright} {ital 1996 The American Physical Society.}
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- DOE Contract Number:
- AC02-76CH00016; FG02-91ER40671
- OSTI ID:
- 284541
- Journal Information:
- Physical Review Letters, Vol. 76, Issue 9; Other Information: PBD: Feb 1996
- Country of Publication:
- United States
- Language:
- English
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