Search for the decay K+ ---> pi+ neutrino anti-neutrino

Atiya, M.S.; Chiang, I.H.; Frank, J.S.; Haggerty, J.S.; Ito, M.; Kycia, T.F.; Li, K.K.; Littenberg, L.S.; Sambamurti, A.; Stevens, A.

doi:10.1103/PhysRevLett.70.2521

Search for the decay K+ ---> pi+ neutrino anti-neutrino

Oct, 1992

12 pages

Published in:

Phys.Rev.Lett. 70 (1993) 2521-2524,
Phys.Rev.Lett. 71 (1993) 305 (erratum)

DOI:

10.1103/PhysRevLett.70.2521,
10.1103/PhysRevLett.71.305.2 (erratum)

PDG:

{{\mathit K}^{+}}

\rightarrow

{{\mathit \pi}^{+}}{{\mathit \nu}}{{\overline{\mathit \nu}}}

Report number:

TRI-PP-92-102

Experiments:

BNL-E-0787

View in:

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Abstract: (APS)

An upper limit on the branching ratio for the decay K+→π+νν¯ 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.

K+: semileptonic decay
semileptonic decay: K+
K+: branching ratio
upper limit
K+: separated beam
separated beam: K+
experimental results
Brookhaven PS
K+ --> pi+ neutrino antineutrino
K+ --> pi+ neutral particle

References(16)

Figures(0)

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