Abstract
The asymmetry of positrons in the K{sup +} {yields} {mu}{sup +}{nu}, {mu}{sup +} {yields} e{sup +}{nu}{sub e}{nu}-bar{sub {mu}} decay chain was measured in a search for right-handed weak currents in {Delta}S = 1 semi-leptonic decay. High-intensity low-background monoenergetic polarized muons of 236 MeV/c momentum resulting from kaon decay at rest were directly extracted from a primary production target which was hit by a proton beam of the KEK 12-GeV proton synchrotron. Muons were stopped in a pure-aluminum plate, and the energy-integrated asymmetry of the decay positrons with respect to the incoming muon direction was determined to high precision. The observed asymmetry yielded {xi}P{sub {mu}} = -0.9996 {+-} 0.0030(stat) {+-} 0.0048(sys). This result revealed no evidence of right-handed currents in this kaon-decay chain, and set a stringent bound on the mass of the right-handed weak boson. (author) 52 refs.
Citation Formats
Aoki, M, Yamazaki, T, and Imazato, J.
Search for right-handed currents in the decay chain of K{sup +} {yields} {mu}{sup +}{nu}{sub {mu}}, {mu}{sup +} {yields} e{sup +}{nu}{sub e}{nu}-bar{sub {mu}}.
Japan: N. p.,
1993.
Web.
Aoki, M, Yamazaki, T, & Imazato, J.
Search for right-handed currents in the decay chain of K{sup +} {yields} {mu}{sup +}{nu}{sub {mu}}, {mu}{sup +} {yields} e{sup +}{nu}{sub e}{nu}-bar{sub {mu}}.
Japan.
Aoki, M, Yamazaki, T, and Imazato, J.
1993.
"Search for right-handed currents in the decay chain of K{sup +} {yields} {mu}{sup +}{nu}{sub {mu}}, {mu}{sup +} {yields} e{sup +}{nu}{sub e}{nu}-bar{sub {mu}}."
Japan.
@misc{etde_10156027,
title = {Search for right-handed currents in the decay chain of K{sup +} {yields} {mu}{sup +}{nu}{sub {mu}}, {mu}{sup +} {yields} e{sup +}{nu}{sub e}{nu}-bar{sub {mu}}}
author = {Aoki, M, Yamazaki, T, and Imazato, J}
abstractNote = {The asymmetry of positrons in the K{sup +} {yields} {mu}{sup +}{nu}, {mu}{sup +} {yields} e{sup +}{nu}{sub e}{nu}-bar{sub {mu}} decay chain was measured in a search for right-handed weak currents in {Delta}S = 1 semi-leptonic decay. High-intensity low-background monoenergetic polarized muons of 236 MeV/c momentum resulting from kaon decay at rest were directly extracted from a primary production target which was hit by a proton beam of the KEK 12-GeV proton synchrotron. Muons were stopped in a pure-aluminum plate, and the energy-integrated asymmetry of the decay positrons with respect to the incoming muon direction was determined to high precision. The observed asymmetry yielded {xi}P{sub {mu}} = -0.9996 {+-} 0.0030(stat) {+-} 0.0048(sys). This result revealed no evidence of right-handed currents in this kaon-decay chain, and set a stringent bound on the mass of the right-handed weak boson. (author) 52 refs.}
place = {Japan}
year = {1993}
month = {Dec}
}
title = {Search for right-handed currents in the decay chain of K{sup +} {yields} {mu}{sup +}{nu}{sub {mu}}, {mu}{sup +} {yields} e{sup +}{nu}{sub e}{nu}-bar{sub {mu}}}
author = {Aoki, M, Yamazaki, T, and Imazato, J}
abstractNote = {The asymmetry of positrons in the K{sup +} {yields} {mu}{sup +}{nu}, {mu}{sup +} {yields} e{sup +}{nu}{sub e}{nu}-bar{sub {mu}} decay chain was measured in a search for right-handed weak currents in {Delta}S = 1 semi-leptonic decay. High-intensity low-background monoenergetic polarized muons of 236 MeV/c momentum resulting from kaon decay at rest were directly extracted from a primary production target which was hit by a proton beam of the KEK 12-GeV proton synchrotron. Muons were stopped in a pure-aluminum plate, and the energy-integrated asymmetry of the decay positrons with respect to the incoming muon direction was determined to high precision. The observed asymmetry yielded {xi}P{sub {mu}} = -0.9996 {+-} 0.0030(stat) {+-} 0.0048(sys). This result revealed no evidence of right-handed currents in this kaon-decay chain, and set a stringent bound on the mass of the right-handed weak boson. (author) 52 refs.}
place = {Japan}
year = {1993}
month = {Dec}
}