Search for the decays [ital K][sup +][r arrow][pi][sup +][nu][bar [nu]] and [ital K][sup +][r arrow][pi][sup +][ital X0] for 150[lt][ital M][sub [ital X]][sup 0][lt]250 MeV/[ital c][sup 2]

Journal Article · Thu Jul 01 00:00:00 EDT 1993 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.48.R1· OSTI ID:6430663

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)

A search for the decays [ital K][sup +][r arrow][pi][sup +][nu][bar [nu]] and [ital K][sup +][r arrow][pi][sup +][ital X0], where [ital X][sup 0] is any weakly interacting neutral particle or system of neutral particles with 150[lt][ital M][sub [ital X]][sup 0][lt]250 MeV/[ital c][sup 2], was performed in the pion kinematic region below the [ital K][sub [pi]2]([ital K][sup +][r arrow][pi][sup +][pi][sup 0]) peak. An upper limit on [ital B]([ital K][sup +][r arrow][pi][sup +][nu][bar [nu]]) is set at 1.7[times]10[sup [minus]8] (90% C.L.) and [ital B]([ital K][sup +][r arrow][pi][sup +][ital X0]) is restricted to the 10[sup [minus]7] level or lower. Limits are also set for the production of [ital K][sup +][r arrow][pi][sup +][nu][bar [nu]] through scalar or tensor interactions at 1.8[times]10[sup [minus]8] and 1.0[times]10[sup [minus]8] (90% C.L.), respectively.

• DOE Contract Number: AC02-76CH00016; W-7405-ENG-36; AC02-76ER03072
• OSTI ID: 6430663
• Journal Information: Physical Review, D (Particles Fields); (United States), Vol. 48:1; ISSN 0556-2821
• Country of Publication: United States
• Language: English

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