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Title: Evidence for the Decay K{sup +}{r_arrow}{pi}{sup +}{nu}{bar v}

Abstract

An event consistent with the signature expected for the rare kaon decay K{sup +}{r_arrow}{pi}{sup +}{nu}{bar {nu}} has been observed. In the pion momentum region examined, 211{lt}P{lt}230 MeV/c , the backgrounds are estimated to contribute 0.08{plus_minus}0.03 events. If the event is due to K{sup +}{r_arrow}{pi}{sup +}{nu}{bar {nu}} , the branching ratio is 4.2{sup +9.7}{sub {minus}3.5}{times}10{sup {minus}10} . {copyright} {ital 1997} {ital The American Physical Society}

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ;  [1]; ; ; ;  [2]; more »; ; ; ; ; ;  [3]; ;  [4]; ; ; ; ; ; ; ; ; ;  [5]; ; ; ; ; ; ; ; ; ; ; ; ; ;  [6]; ;  [7] « less
  1. Brookhaven National Laboratory, Upton, New York 11973 (United States)
  2. High Energy Accelerator Research Organization (KEK), Tanashi-branch, Midoricho, Tanashi, Tokyo 188 (Japan)
  3. High Energy Accelerator Research Organization (KEK), Oho, Tsukuba, Ibaraki 305 (Japan)
  4. Department of Physics, Osaka University, Machikaneyama, Toyonaka, Osaka 560 (Japan)
  5. Joseph Henry Laboratories, Princeton University, Princeton, New Jersey 08544 (United States)
  6. TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, Canada, V6T 2A3 (CANADA)
  7. Centre for Subatomic Research, University of Alberta, Edmonton, Alberta, Canada, T6G 2N5 (CANADA)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
OSTI Identifier:
542659
DOE Contract Number:  
AC02-76CH00016; FG02-91ER40671; W-7405-ENG-36
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 79; Journal Issue: 12; Other Information: PBD: Sep 1997
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; KAONS PLUS; WEAK HADRONIC DECAY; PROTONS; NEUTRONS; BRANCHING RATIO; KOBAYASHI-MASKAWA MATRIX; MATRIX ELEMENTS; SENSITIVITY; ISOSPIN

Citation Formats

Adler, S., Atiya, M.S., Chiang, I., Diwan, M.V., Frank, J.S., Haggerty, J.S., Kettell, S.H., Kycia, T.F., Li, K.K., Littenberg, L.S., Ng, C., Sambamurti, A., Stevens, A., Strand, R.C., Witzig, C., Komatsubara, T.K., Kuriki, M., Muramatsu, N., Sugimoto, S., Inagaki, T., Kabe, S., Kobayashi, M., Kuno, Y., Sato, T., Shinkawa, T., Yoshimura, Y., Kishi, Y., Nakano, T., Ardebili, M., Bazarko, A.O., Convery, M.R., Ito, M.M., Marlow, D.R., McPherson, R.A., Meyers, P.D., Shoemaker, F.C., Smith, A.J., Stone, J.R., Aoki, M., Blackmore, E.W., Bergbusch, P.C., Bryman, D.A., Konaka, A., Macdonald, J.A., Mildenberger, J., Numao, T., Padley, P., Poutissou, J., Poutissou, R., Redlinger, G., Roy, J., Turcot, A.S., Kitching, P., and Soluk, R. Evidence for the Decay K{sup +}{r_arrow}{pi}{sup +}{nu}{bar v}. United States: N. p., 1997. Web. doi:10.1103/PhysRevLett.79.2204.
Adler, S., Atiya, M.S., Chiang, I., Diwan, M.V., Frank, J.S., Haggerty, J.S., Kettell, S.H., Kycia, T.F., Li, K.K., Littenberg, L.S., Ng, C., Sambamurti, A., Stevens, A., Strand, R.C., Witzig, C., Komatsubara, T.K., Kuriki, M., Muramatsu, N., Sugimoto, S., Inagaki, T., Kabe, S., Kobayashi, M., Kuno, Y., Sato, T., Shinkawa, T., Yoshimura, Y., Kishi, Y., Nakano, T., Ardebili, M., Bazarko, A.O., Convery, M.R., Ito, M.M., Marlow, D.R., McPherson, R.A., Meyers, P.D., Shoemaker, F.C., Smith, A.J., Stone, J.R., Aoki, M., Blackmore, E.W., Bergbusch, P.C., Bryman, D.A., Konaka, A., Macdonald, J.A., Mildenberger, J., Numao, T., Padley, P., Poutissou, J., Poutissou, R., Redlinger, G., Roy, J., Turcot, A.S., Kitching, P., & Soluk, R. Evidence for the Decay K{sup +}{r_arrow}{pi}{sup +}{nu}{bar v}. United States. doi:10.1103/PhysRevLett.79.2204.
Adler, S., Atiya, M.S., Chiang, I., Diwan, M.V., Frank, J.S., Haggerty, J.S., Kettell, S.H., Kycia, T.F., Li, K.K., Littenberg, L.S., Ng, C., Sambamurti, A., Stevens, A., Strand, R.C., Witzig, C., Komatsubara, T.K., Kuriki, M., Muramatsu, N., Sugimoto, S., Inagaki, T., Kabe, S., Kobayashi, M., Kuno, Y., Sato, T., Shinkawa, T., Yoshimura, Y., Kishi, Y., Nakano, T., Ardebili, M., Bazarko, A.O., Convery, M.R., Ito, M.M., Marlow, D.R., McPherson, R.A., Meyers, P.D., Shoemaker, F.C., Smith, A.J., Stone, J.R., Aoki, M., Blackmore, E.W., Bergbusch, P.C., Bryman, D.A., Konaka, A., Macdonald, J.A., Mildenberger, J., Numao, T., Padley, P., Poutissou, J., Poutissou, R., Redlinger, G., Roy, J., Turcot, A.S., Kitching, P., and Soluk, R. Mon . "Evidence for the Decay K{sup +}{r_arrow}{pi}{sup +}{nu}{bar v}". United States. doi:10.1103/PhysRevLett.79.2204.
@article{osti_542659,
title = {Evidence for the Decay K{sup +}{r_arrow}{pi}{sup +}{nu}{bar v}},
author = {Adler, S. and Atiya, M.S. and Chiang, I. and Diwan, M.V. and Frank, J.S. and Haggerty, J.S. and Kettell, S.H. and Kycia, T.F. and Li, K.K. and Littenberg, L.S. and Ng, C. and Sambamurti, A. and Stevens, A. and Strand, R.C. and Witzig, C. and Komatsubara, T.K. and Kuriki, M. and Muramatsu, N. and Sugimoto, S. and Inagaki, T. and Kabe, S. and Kobayashi, M. and Kuno, Y. and Sato, T. and Shinkawa, T. and Yoshimura, Y. and Kishi, Y. and Nakano, T. and Ardebili, M. and Bazarko, A.O. and Convery, M.R. and Ito, M.M. and Marlow, D.R. and McPherson, R.A. and Meyers, P.D. and Shoemaker, F.C. and Smith, A.J. and Stone, J.R. and Aoki, M. and Blackmore, E.W. and Bergbusch, P.C. and Bryman, D.A. and Konaka, A. and Macdonald, J.A. and Mildenberger, J. and Numao, T. and Padley, P. and Poutissou, J. and Poutissou, R. and Redlinger, G. and Roy, J. and Turcot, A.S. and Kitching, P. and Soluk, R.},
abstractNote = {An event consistent with the signature expected for the rare kaon decay K{sup +}{r_arrow}{pi}{sup +}{nu}{bar {nu}} has been observed. In the pion momentum region examined, 211{lt}P{lt}230 MeV/c , the backgrounds are estimated to contribute 0.08{plus_minus}0.03 events. If the event is due to K{sup +}{r_arrow}{pi}{sup +}{nu}{bar {nu}} , the branching ratio is 4.2{sup +9.7}{sub {minus}3.5}{times}10{sup {minus}10} . {copyright} {ital 1997} {ital The American Physical Society}},
doi = {10.1103/PhysRevLett.79.2204},
journal = {Physical Review Letters},
number = 12,
volume = 79,
place = {United States},
year = {1997},
month = {9}
}