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Title: Search for the CP forbidden decay {nu} {yields} 4{pi}{sup 0}.

Abstract

We report the first determination of the upper limit for the branching ratio of the CP forbidden decay {eta}{yields}4{pi}{sup 0}. No events were observed in a sample of 3.0 x 10{sup 7} {eta} decays. The experiment was performed with the Crystal Ball multiphoton spectrometer installed in a separated {pi}{sup -} beam at the AGS (Alternating Gradient Synchrotron). At the 90% confidence limit, B({eta}{yields}4{pi}{sup 0}){<=}6.9x10{sup -7}.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC); National Science Foundation (NSF); FOR
OSTI Identifier:
942948
Report Number(s):
ANL-HEP-PR-00-58
Journal ID: ISSN 0031-9007; PRLTAO; TRN: US1000488
DOE Contract Number:  
DE-AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Phys. Rev. Lett.
Additional Journal Information:
Journal Volume: 84; Journal Issue: 21 ; May 22, 2000; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
ENGLISH
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ETA MESONS; BRANCHING RATIO; PARTICLE DECAY; CP INVARIANCE; PIONS NEUTRAL

Citation Formats

Prakhov, S., Tippens, W. B., Allgower, C., Bekrenev, V., Berger, E., Spinka, H., High Energy Physics, Univ. of California, and Petersburg Nuclear Physics Inst. Search for the CP forbidden decay {nu} {yields} 4{pi}{sup 0}.. United States: N. p., 2000. Web. doi:10.1103/PhysRevLett.84.4802.
Prakhov, S., Tippens, W. B., Allgower, C., Bekrenev, V., Berger, E., Spinka, H., High Energy Physics, Univ. of California, & Petersburg Nuclear Physics Inst. Search for the CP forbidden decay {nu} {yields} 4{pi}{sup 0}.. United States. doi:10.1103/PhysRevLett.84.4802.
Prakhov, S., Tippens, W. B., Allgower, C., Bekrenev, V., Berger, E., Spinka, H., High Energy Physics, Univ. of California, and Petersburg Nuclear Physics Inst. Mon . "Search for the CP forbidden decay {nu} {yields} 4{pi}{sup 0}.". United States. doi:10.1103/PhysRevLett.84.4802.
@article{osti_942948,
title = {Search for the CP forbidden decay {nu} {yields} 4{pi}{sup 0}.},
author = {Prakhov, S. and Tippens, W. B. and Allgower, C. and Bekrenev, V. and Berger, E. and Spinka, H. and High Energy Physics and Univ. of California and Petersburg Nuclear Physics Inst.},
abstractNote = {We report the first determination of the upper limit for the branching ratio of the CP forbidden decay {eta}{yields}4{pi}{sup 0}. No events were observed in a sample of 3.0 x 10{sup 7} {eta} decays. The experiment was performed with the Crystal Ball multiphoton spectrometer installed in a separated {pi}{sup -} beam at the AGS (Alternating Gradient Synchrotron). At the 90% confidence limit, B({eta}{yields}4{pi}{sup 0}){<=}6.9x10{sup -7}.},
doi = {10.1103/PhysRevLett.84.4802},
journal = {Phys. Rev. Lett.},
issn = {0031-9007},
number = 21 ; May 22, 2000,
volume = 84,
place = {United States},
year = {2000},
month = {5}
}