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Title: Search for the Decay K{sub L} {yields} {pi}{sup 0}{mu}{sup +}{mu}{sup -}

Abstract

We report on a search for the decay K{sub L}{yields}{pi}{sup 0}{mu}{sup +}{mu}{sup -} carried out as a part of the KTeV experiment at Fermilab. This decay is expected to have a significant CP violating contribution and a direct measurement will either support the Cabibbo-Kobayashi-Maskawa mechanism for CP violation or point to new physics. Two events were observed in the 1997 data with an expected background of 0.87{+-}0.15 events, and we set an upper limit B(K{sub L}{yields}{pi}{sup 0}{mu}{sup +}{mu}{sup -})<3.8x10{sup -10} at the 90% confidence level. (c) 2000 The American Physical Society.

Authors:
 [1];  [2];  [3];  [4];  [5];  [6];  [3];  [7];  [8];  [9];  [10]
  1. University of Arizona, Tucson, Arizona 85721 (United States)
  2. (United States)
  3. Rutgers University, Piscataway, New Jersey 08855 (United States)
  4. University of Wisconsin, Madison, Wisconsin 53706 (United States)
  5. The Department of Physics and Institute of Nuclear and Particle Physics, University of Virginia, Charlottesville, Virginia 22901 (United States)
  6. University of California at Los Angeles, Los Angeles, California 90095 (United States)
  7. University of Colorado, Boulder, Colorado 80309 (United States)
  8. Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States)
  9. Rice University, Houston, Texas 77005 (United States)
  10. Rutgers University, Piscataway, New Jersey 08855 (United States) (and others)
Publication Date:
OSTI Identifier:
20216794
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 84; Journal Issue: 23; Other Information: PBD: 5 Jun 2000; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; KAONS; SEMILEPTONIC DECAY; PIONS NEUTRAL; MUONS MINUS; MUONS PLUS; CP INVARIANCE; KOBAYASHI-MASKAWA MATRIX; EXPERIMENTAL DATA

Citation Formats

Alavi-Harati, A., University of California at Los Angeles, Los Angeles, California 90095, Albuquerque, I. F., Alexopoulos, T., Arenton, M., Arisaka, K., Averitte, S., Barker, A. R., Bellantoni, L., Bellavance, A., and Belz, J. Search for the Decay K{sub L} {yields} {pi}{sup 0}{mu}{sup +}{mu}{sup -}. United States: N. p., 2000. Web. doi:10.1103/PhysRevLett.84.5279.
Alavi-Harati, A., University of California at Los Angeles, Los Angeles, California 90095, Albuquerque, I. F., Alexopoulos, T., Arenton, M., Arisaka, K., Averitte, S., Barker, A. R., Bellantoni, L., Bellavance, A., & Belz, J. Search for the Decay K{sub L} {yields} {pi}{sup 0}{mu}{sup +}{mu}{sup -}. United States. doi:10.1103/PhysRevLett.84.5279.
Alavi-Harati, A., University of California at Los Angeles, Los Angeles, California 90095, Albuquerque, I. F., Alexopoulos, T., Arenton, M., Arisaka, K., Averitte, S., Barker, A. R., Bellantoni, L., Bellavance, A., and Belz, J. Mon . "Search for the Decay K{sub L} {yields} {pi}{sup 0}{mu}{sup +}{mu}{sup -}". United States. doi:10.1103/PhysRevLett.84.5279.
@article{osti_20216794,
title = {Search for the Decay K{sub L} {yields} {pi}{sup 0}{mu}{sup +}{mu}{sup -}},
author = {Alavi-Harati, A. and University of California at Los Angeles, Los Angeles, California 90095 and Albuquerque, I. F. and Alexopoulos, T. and Arenton, M. and Arisaka, K. and Averitte, S. and Barker, A. R. and Bellantoni, L. and Bellavance, A. and Belz, J.},
abstractNote = {We report on a search for the decay K{sub L}{yields}{pi}{sup 0}{mu}{sup +}{mu}{sup -} carried out as a part of the KTeV experiment at Fermilab. This decay is expected to have a significant CP violating contribution and a direct measurement will either support the Cabibbo-Kobayashi-Maskawa mechanism for CP violation or point to new physics. Two events were observed in the 1997 data with an expected background of 0.87{+-}0.15 events, and we set an upper limit B(K{sub L}{yields}{pi}{sup 0}{mu}{sup +}{mu}{sup -})<3.8x10{sup -10} at the 90% confidence level. (c) 2000 The American Physical Society.},
doi = {10.1103/PhysRevLett.84.5279},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 23,
volume = 84,
place = {United States},
year = {2000},
month = {6}
}