Test of time reversal invariance in the decay K+ → π0μ+ν

KEK-E246 Collaboration

doi:10.1016/S0375-9474(99)00797-6

Test of time reversal invariance in the decay K⁺ → π⁰μ⁺ν

KEK-E246 Collaboration

Department of Physics

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

The T violating parameter, ℑ(ξ), of the decay K⁺ → π⁰μ⁺v, has been determined in KEK experiment E246 from a measurement of the transverse μ⁺ polarization, P_T. The experiment is the first to use stopped K⁺, which allows a null test, formation of a double ratio for P_T, and enhances the ratio ℑ(ξ)/P_T. The results from the 1996-1997 data are: ℑ(ξ) = -0.013 ± 0.016 ± 0.003 ˜ 3P_T. The first error, due to statistics, dominates over the second which is due to systematics. Considerably more data taken in 1998 is under analysis and additional running time has been approved by KEK.

Original language	English
Pages (from-to)	919c-922c
Journal	Nuclear Physics A
Volume	663-664
Issue number	1-2
DOIs	https://doi.org/10.1016/S0375-9474(99)00797-6
Publication status	Published - 2000 Jan 31

Bibliographical note

Funding Information:
'The support fo arvious funding agencies is Ministry fo encciSe and echngyTolo fo Rusais and the Rusians oundFation orf Basic Rearches , Canada, NSERC-C t PANIC99 verbal presentatoni

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

Access to Document

10.1016/S0375-9474(99)00797-6

Cite this

@article{5dfc19885dc24bb7b4832e0adaff0cd6,

title = "Test of time reversal invariance in the decay K+ → π0μ+ν",

abstract = "The T violating parameter, ℑ(ξ), of the decay K+ → π0μ+v, has been determined in KEK experiment E246 from a measurement of the transverse μ+ polarization, PT. The experiment is the first to use stopped K+, which allows a null test, formation of a double ratio for PT, and enhances the ratio ℑ(ξ)/PT. The results from the 1996-1997 data are: ℑ(ξ) = -0.013 ± 0.016 ± 0.003 ˜ 3PT. The first error, due to statistics, dominates over the second which is due to systematics. Considerably more data taken in 1998 is under analysis and additional running time has been approved by KEK.",

author = "{KEK-E246 Collaboration} and M. Abe and M. Aoki and I. Arai and Y. Asano and T. Baker and M. Blecher and Chapman, {M. D.} and Dementyev, {D. V.} and P. Depommier and Grigoriev, {M. P.} and P. Gumplinger and M. Hasinoff and R. Henderson and K. Horie and Hou, {W. S.} and Huang, {H. C.} and Y. Igarashi and T. Ikeda and J. Imazato and Ivashkin, {A. P.} and Kang, {J. H.} and W. Keil and Khabibullin, {M. M.} and Khotyantsev, {A. N.} and Kudenko, {Yu G.} and Y. Kuno and Lee, {J. M.} and Lee, {K. S.} and Lim, {G. Y.} and Macdonald, {J. A.} and Marlow, {D. R.} and Mindas, {C. R.} and Mineev, {O. V.} and C. Rangacharyulu and Sahu, {S. K.} and S. Sekikawa and K. Shibata and Shimizu, {H. M.} and S. Shimizu and Shin, {Y. M.} and Shin, {Y. H.} and Sim, {K. S.} and A. Suzuki and T. Tashiro and A. Watanabe and D. Wright and T. Yokoi",

note = "Funding Information: 'The support fo arvious funding agencies is Ministry fo encciSe and echngyTolo fo Rusais and the Rusians oundFation orf Basic Rearches , Canada, NSERC-C t PANIC99 verbal presentatoni",

year = "2000",

month = jan,

day = "31",

doi = "10.1016/S0375-9474(99)00797-6",

language = "English",

volume = "663-664",

pages = "919c--922c",

journal = "Nuclear Physics A",

issn = "0375-9474",

publisher = "Elsevier",

number = "1-2",

}

TY - JOUR

T1 - Test of time reversal invariance in the decay K+ → π0μ+ν

AU - KEK-E246 Collaboration

AU - Abe, M.

AU - Aoki, M.

AU - Arai, I.

AU - Asano, Y.

AU - Baker, T.

AU - Blecher, M.

AU - Chapman, M. D.

AU - Dementyev, D. V.

AU - Depommier, P.

AU - Grigoriev, M. P.

AU - Gumplinger, P.

AU - Hasinoff, M.

AU - Henderson, R.

AU - Horie, K.

AU - Hou, W. S.

AU - Huang, H. C.

AU - Igarashi, Y.

AU - Ikeda, T.

AU - Imazato, J.

AU - Ivashkin, A. P.

AU - Kang, J. H.

AU - Keil, W.

AU - Khabibullin, M. M.

AU - Khotyantsev, A. N.

AU - Kudenko, Yu G.

AU - Kuno, Y.

AU - Lee, J. M.

AU - Lee, K. S.

AU - Lim, G. Y.

AU - Macdonald, J. A.

AU - Marlow, D. R.

AU - Mindas, C. R.

AU - Mineev, O. V.

AU - Rangacharyulu, C.

AU - Sahu, S. K.

AU - Sekikawa, S.

AU - Shibata, K.

AU - Shimizu, H. M.

AU - Shimizu, S.

AU - Shin, Y. M.

AU - Shin, Y. H.

AU - Sim, K. S.

AU - Suzuki, A.

AU - Tashiro, T.

AU - Watanabe, A.

AU - Wright, D.

AU - Yokoi, T.

N1 - Funding Information: 'The support fo arvious funding agencies is Ministry fo encciSe and echngyTolo fo Rusais and the Rusians oundFation orf Basic Rearches , Canada, NSERC-C t PANIC99 verbal presentatoni

PY - 2000/1/31

Y1 - 2000/1/31

N2 - The T violating parameter, ℑ(ξ), of the decay K+ → π0μ+v, has been determined in KEK experiment E246 from a measurement of the transverse μ+ polarization, PT. The experiment is the first to use stopped K+, which allows a null test, formation of a double ratio for PT, and enhances the ratio ℑ(ξ)/PT. The results from the 1996-1997 data are: ℑ(ξ) = -0.013 ± 0.016 ± 0.003 ˜ 3PT. The first error, due to statistics, dominates over the second which is due to systematics. Considerably more data taken in 1998 is under analysis and additional running time has been approved by KEK.

AB - The T violating parameter, ℑ(ξ), of the decay K+ → π0μ+v, has been determined in KEK experiment E246 from a measurement of the transverse μ+ polarization, PT. The experiment is the first to use stopped K+, which allows a null test, formation of a double ratio for PT, and enhances the ratio ℑ(ξ)/PT. The results from the 1996-1997 data are: ℑ(ξ) = -0.013 ± 0.016 ± 0.003 ˜ 3PT. The first error, due to statistics, dominates over the second which is due to systematics. Considerably more data taken in 1998 is under analysis and additional running time has been approved by KEK.

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UR - http://www.scopus.com/inward/citedby.url?scp=0034736674&partnerID=8YFLogxK

U2 - 10.1016/S0375-9474(99)00797-6

DO - 10.1016/S0375-9474(99)00797-6

M3 - Article

AN - SCOPUS:0034736674

SN - 0375-9474

VL - 663-664

SP - 919c-922c

JO - Nuclear Physics A

JF - Nuclear Physics A

IS - 1-2

ER -