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Title: Search for the decay K+ to pi+ gamma gamma in the pi+ momentum region P > 213 MeV/c

Abstract

We have searched for the K{sup +} {yields} {pi}{sup +}{gamma}{gamma} decay in the kinematic region with {pi}{sup +} momentum close to the end point. No events were observed, and the 90% confidence-level upper limit on the partial branching ratio was obtained, B(K{sup +} {yields} {pi}{sup +}{gamma}{gamma}, P > 213 MeV/c) < 8.3 x 10{sup -9} under the assumption of chiral perturbation theory including next-to-leading order ''unitarity'' corrections. The same data were used to determine an upper limit on the K{sup +} {yields} {pi}{sup +}{gamma} branching ratio of 2.3 x 10{sup -9} at the 90% confidence level.

Authors:
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Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
879171
Report Number(s):
FERMILAB-PUB-05-449-E
Journal ID: ISSN 0370-2693; PYLBAJ; arXiv eprint number hep-ex/0505069; TRN: US0602854
DOE Contract Number:  
AC02-76CH03000
Resource Type:
Journal Article
Journal Name:
Physics Letters, (Section) B
Additional Journal Information:
Journal Volume: 623; Journal ID: ISSN 0370-2693
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; BRANCHING RATIO; DECAY; PERTURBATION THEORY; UNITARITY; Experiment-HEP

Citation Formats

Artamonov, A V, Bassalleck, B, Bhuyan, B, Blackmore, E W, Bryman, D A, Chen, S, Chiang, I -H, Christidi, I -A, Cooper, P S, Diwan, M V, Frank, J S, Fujiwara, T, Hu, J, Jaffe, D E, Kabe, S, Kettell, S H, Khabibullin, M M, Khotjantsev, A N, Kitching, P, Kobayashi, M, Komatsubara, T K, and /Serpukhov, IHEP /New Mexico U. /Brookhaven/TRIUMF /British Columbia U. /SUNY, Stony Brook /Fermilab /Kyoto U. /KEK, Tsukuba /Moscow, INR /CSR, Edmonton /Fukui U. /Fukui U. /Osaka U., Res. Ctr. Nucl. Phys. /Osaka U., LNS/Japan, Natl. Defence Academy /Delhi U.. Search for the decay K+ to pi+ gamma gamma in the pi+ momentum region P > 213 MeV/c. United States: N. p., 2005. Web. doi:10.1016/j.physletb.2005.07.057.
Artamonov, A V, Bassalleck, B, Bhuyan, B, Blackmore, E W, Bryman, D A, Chen, S, Chiang, I -H, Christidi, I -A, Cooper, P S, Diwan, M V, Frank, J S, Fujiwara, T, Hu, J, Jaffe, D E, Kabe, S, Kettell, S H, Khabibullin, M M, Khotjantsev, A N, Kitching, P, Kobayashi, M, Komatsubara, T K, & /Serpukhov, IHEP /New Mexico U. /Brookhaven/TRIUMF /British Columbia U. /SUNY, Stony Brook /Fermilab /Kyoto U. /KEK, Tsukuba /Moscow, INR /CSR, Edmonton /Fukui U. /Fukui U. /Osaka U., Res. Ctr. Nucl. Phys. /Osaka U., LNS/Japan, Natl. Defence Academy /Delhi U.. Search for the decay K+ to pi+ gamma gamma in the pi+ momentum region P > 213 MeV/c. United States. https://doi.org/10.1016/j.physletb.2005.07.057
Artamonov, A V, Bassalleck, B, Bhuyan, B, Blackmore, E W, Bryman, D A, Chen, S, Chiang, I -H, Christidi, I -A, Cooper, P S, Diwan, M V, Frank, J S, Fujiwara, T, Hu, J, Jaffe, D E, Kabe, S, Kettell, S H, Khabibullin, M M, Khotjantsev, A N, Kitching, P, Kobayashi, M, Komatsubara, T K, and /Serpukhov, IHEP /New Mexico U. /Brookhaven/TRIUMF /British Columbia U. /SUNY, Stony Brook /Fermilab /Kyoto U. /KEK, Tsukuba /Moscow, INR /CSR, Edmonton /Fukui U. /Fukui U. /Osaka U., Res. Ctr. Nucl. Phys. /Osaka U., LNS/Japan, Natl. Defence Academy /Delhi U.. Sun . "Search for the decay K+ to pi+ gamma gamma in the pi+ momentum region P > 213 MeV/c". United States. https://doi.org/10.1016/j.physletb.2005.07.057. https://www.osti.gov/servlets/purl/879171.
@article{osti_879171,
title = {Search for the decay K+ to pi+ gamma gamma in the pi+ momentum region P > 213 MeV/c},
author = {Artamonov, A V and Bassalleck, B and Bhuyan, B and Blackmore, E W and Bryman, D A and Chen, S and Chiang, I -H and Christidi, I -A and Cooper, P S and Diwan, M V and Frank, J S and Fujiwara, T and Hu, J and Jaffe, D E and Kabe, S and Kettell, S H and Khabibullin, M M and Khotjantsev, A N and Kitching, P and Kobayashi, M and Komatsubara, T K and /Serpukhov, IHEP /New Mexico U. /Brookhaven/TRIUMF /British Columbia U. /SUNY, Stony Brook /Fermilab /Kyoto U. /KEK, Tsukuba /Moscow, INR /CSR, Edmonton /Fukui U. /Fukui U. /Osaka U., Res. Ctr. Nucl. Phys. /Osaka U., LNS/Japan, Natl. Defence Academy /Delhi U.},
abstractNote = {We have searched for the K{sup +} {yields} {pi}{sup +}{gamma}{gamma} decay in the kinematic region with {pi}{sup +} momentum close to the end point. No events were observed, and the 90% confidence-level upper limit on the partial branching ratio was obtained, B(K{sup +} {yields} {pi}{sup +}{gamma}{gamma}, P > 213 MeV/c) < 8.3 x 10{sup -9} under the assumption of chiral perturbation theory including next-to-leading order ''unitarity'' corrections. The same data were used to determine an upper limit on the K{sup +} {yields} {pi}{sup +}{gamma} branching ratio of 2.3 x 10{sup -9} at the 90% confidence level.},
doi = {10.1016/j.physletb.2005.07.057},
url = {https://www.osti.gov/biblio/879171}, journal = {Physics Letters, (Section) B},
issn = {0370-2693},
number = ,
volume = 623,
place = {United States},
year = {2005},
month = {5}
}