Search for the decay [ital K][sup +][r arrow][pi][sup +][nu][bar [nu]]

Journal Article · Mon Apr 26 00:00:00 EDT 1993 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.70.2521· OSTI ID:6462811

Atiya, M S; Chiang, I; Frank, J S; Haggerty, J S; Ito, M M; Kycia, T F; Li, K K; Littenberg, L S; Sambamurti, A; Stevens, A; Strand, R C ^[1]; Louis, W C ^[2]; Akerib, D S; Marlow, D R; Meyers, P D; Selen, M A; Shoemaker, F C; Smith, A J.S. ^[3]; Blackmore, E W; Bryman, D A ; Felawka, L; Kitching, P; Konaka, A; Kuno, Y; Macdonald, J A; Numao, T; Padley, P; Poutissou, J; Poutissou, R; Roy, J; Soluk, R; Turcot, A S ^[4]

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1. Brookhaven National Laboratory, Upton, New York 11973 (United States)
2. Medium Energy Physics Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
3. Joseph Henry Laboratories, Princeton University, Princeton, New Jersey 08544 (United States)
4. 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][bar [nu]] is set at 7.5[times]10[sup [minus]9] (90% C.L.) using the kinematic region above the [ital K][sub [pi]2]([ital K][sup +][r arrow][pi][sup +][pi][sup 0]) peak. When combined with our result from below the [ital K][sub [pi]2] peak, we obtain the limit 5.2[times]10[sup [minus]9]. An upper limit of 1.7[times]10[sup [minus]9] is also found on the branching ratio for decays of the form [ital K][sup +][r arrow][pi][sup +][ital X0] 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][gt]0.

• DOE Contract Number: AC02-76CH00016; W-7405-ENG-36; AC02-76ER03072
• OSTI ID: 6462811
• Journal Information: Physical Review Letters; (United States), Vol. 70:17; ISSN 0031-9007
• Country of Publication: United States
• Language: English

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662350* - Decays of Mesons- (1992-)
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