APS » PROLA » Phys. Rev. Lett. » Volume 70 » Issue 17

Phys. Rev. Lett. 70, 2521 - 2524 (1993)

Search for the Decay K+→π+νν̅

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M. S. Atiya et al.
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 See Also: Erratum

Received 16 October 1992

An upper limit on the branching ratio for the decay K+→π+νν̅ is set at 7.5 × 10-9 (90% C.L.) using the kinematic region above the Kπ2 (K+→π+π0) peak. When combined with our result from below the Kπ2 peak, we obtain the limit 5.2 × 10-9. An upper limit of 1.7 × 10-9 is also found on the branching ratio for decays of the form K+→π+X0 where X0 is any massless, weakly interacting neutral particle. Limits are also set for cases where MX0>0.


©1993 The American Physical Society

URL: http://link.aps.org/abstract/PRL/v70/p2521
DOI: 10.1103/PhysRevLett.70.2521
PACS: 13.20.Eb, 14.80.Gt, 14.80.Pb

* Present address: Department of Physics, Princeton University, Princeton, NJ 08544.
† Deceased.
‡ Present address: Center for Particle Astrophysics, University of California, Berkeley, CA 94720.
§ Present address: Department of Physics, Cornell University, Ithaca, NY 14853.
** Present address: Physics Department, KEK, Tsukuba, Ibaraki 305, Japan.

See Also

Erratum: M. S. Atiya et al., Search for the Decay K+→π+νν̅ , Phys. Rev. Lett. 71, 305 (1993)

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