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Title: Measurement of the asymmetry in the decay Antiomega+ ---> Antilambda K+ ---> anti-p pi+ K+

Abstract

The asymmetry in the {bar p} angular distribution in the sequential decay {bar {Omega}}{sup +} {yields} {bar {Lambda}}K{sup +} {yields} {bar p}{pi}{sup +}K{sup +} has been measured to be {bar {alpha}}{sub {Omega}}{bar {alpha}}{sub {Lambda}} = [+1.16{+-}0.18(stat){+-}0.17(syst)]x10{sup -2} using 1.89x10{sup 6} unpolarized {bar {Omega}}{sup +} decays recorded by the Hyper CP (E871) experiment at Fermilab. Using the known value of {alpha}{sub {Lambda}}, and assuming that {bar {alpha}}{sub {Lambda}} = -{alpha}{sub {Lambda}}, {bar {alpha}}{sub {Omega}} = [-1.81{+-}0.28(stat){+-}0.26(syst)]x10{sup -2}. A comparison between this measurement of {bar {alpha}}{sub {Omega}}{bar {alpha}}{sub {Lambda}} and recent measurements of {alpha}{sub {Omega}}{alpha}{sub {Lambda}} made by HyperCP shows no evidence of a violation of CP symmetry.

Authors:
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Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
897270
Report Number(s):
FERMILAB-PUB-06-394-E
Journal ID: ISSN 0031-9007; PRLTAO; TRN: US0703539
DOE Contract Number:
AC02-07CH11359
Resource Type:
Journal Article
Resource Relation:
Journal Name: Phys.Rev.Lett.96:242001,2006; Journal Volume: 75
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ANGULAR DISTRIBUTION; ASYMMETRY; DECAY; FERMILAB; SYMMETRY; Experiment-HEP

Citation Formats

Lu, L.C., Burnstein, R.A., Chakravorty, A., Chen, Y.C., Choong, W.S., Clark, K., Dukes, E.C., Durandet, C., Felix, J., Fu, Y., Gidal, G., Gustafson, H.R., Holmstrom, T., Huang, M., James, C., Jenkins, C.M., Jones, T.D., Kaplan, D.M., Longo, M.J., Luebke, W., Luk, K.B., and /Taiwan, Inst. Phys. /UC, Berkeley /Fermilab /Guanajuato U. /IIT, Chicago /Lausanne U. /LBL, Berkeley /Michigan U. /South Alabama U. /Virginia U. Measurement of the asymmetry in the decay Antiomega+ ---> Antilambda K+ ---> anti-p pi+ K+. United States: N. p., 2006. Web. doi:10.1103/PhysRevLett.96.242001.
Lu, L.C., Burnstein, R.A., Chakravorty, A., Chen, Y.C., Choong, W.S., Clark, K., Dukes, E.C., Durandet, C., Felix, J., Fu, Y., Gidal, G., Gustafson, H.R., Holmstrom, T., Huang, M., James, C., Jenkins, C.M., Jones, T.D., Kaplan, D.M., Longo, M.J., Luebke, W., Luk, K.B., & /Taiwan, Inst. Phys. /UC, Berkeley /Fermilab /Guanajuato U. /IIT, Chicago /Lausanne U. /LBL, Berkeley /Michigan U. /South Alabama U. /Virginia U. Measurement of the asymmetry in the decay Antiomega+ ---> Antilambda K+ ---> anti-p pi+ K+. United States. doi:10.1103/PhysRevLett.96.242001.
Lu, L.C., Burnstein, R.A., Chakravorty, A., Chen, Y.C., Choong, W.S., Clark, K., Dukes, E.C., Durandet, C., Felix, J., Fu, Y., Gidal, G., Gustafson, H.R., Holmstrom, T., Huang, M., James, C., Jenkins, C.M., Jones, T.D., Kaplan, D.M., Longo, M.J., Luebke, W., Luk, K.B., and /Taiwan, Inst. Phys. /UC, Berkeley /Fermilab /Guanajuato U. /IIT, Chicago /Lausanne U. /LBL, Berkeley /Michigan U. /South Alabama U. /Virginia U. Sun . "Measurement of the asymmetry in the decay Antiomega+ ---> Antilambda K+ ---> anti-p pi+ K+". United States. doi:10.1103/PhysRevLett.96.242001. https://www.osti.gov/servlets/purl/897270.
@article{osti_897270,
title = {Measurement of the asymmetry in the decay Antiomega+ ---> Antilambda K+ ---> anti-p pi+ K+},
author = {Lu, L.C. and Burnstein, R.A. and Chakravorty, A. and Chen, Y.C. and Choong, W.S. and Clark, K. and Dukes, E.C. and Durandet, C. and Felix, J. and Fu, Y. and Gidal, G. and Gustafson, H.R. and Holmstrom, T. and Huang, M. and James, C. and Jenkins, C.M. and Jones, T.D. and Kaplan, D.M. and Longo, M.J. and Luebke, W. and Luk, K.B. and /Taiwan, Inst. Phys. /UC, Berkeley /Fermilab /Guanajuato U. /IIT, Chicago /Lausanne U. /LBL, Berkeley /Michigan U. /South Alabama U. /Virginia U.},
abstractNote = {The asymmetry in the {bar p} angular distribution in the sequential decay {bar {Omega}}{sup +} {yields} {bar {Lambda}}K{sup +} {yields} {bar p}{pi}{sup +}K{sup +} has been measured to be {bar {alpha}}{sub {Omega}}{bar {alpha}}{sub {Lambda}} = [+1.16{+-}0.18(stat){+-}0.17(syst)]x10{sup -2} using 1.89x10{sup 6} unpolarized {bar {Omega}}{sup +} decays recorded by the Hyper CP (E871) experiment at Fermilab. Using the known value of {alpha}{sub {Lambda}}, and assuming that {bar {alpha}}{sub {Lambda}} = -{alpha}{sub {Lambda}}, {bar {alpha}}{sub {Omega}} = [-1.81{+-}0.28(stat){+-}0.26(syst)]x10{sup -2}. A comparison between this measurement of {bar {alpha}}{sub {Omega}}{bar {alpha}}{sub {Lambda}} and recent measurements of {alpha}{sub {Omega}}{alpha}{sub {Lambda}} made by HyperCP shows no evidence of a violation of CP symmetry.},
doi = {10.1103/PhysRevLett.96.242001},
journal = {Phys.Rev.Lett.96:242001,2006},
number = ,
volume = 75,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2006},
month = {Sun Jan 01 00:00:00 EST 2006}
}