Test of T and CP violation in leptonic decay of {tau}{sup {plus_minus}}

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The {tau}{sup {plus_minus}}, highly polarized in the direction of the incident beam, can be obtained from the e{sup {plus_minus}} collider with the polarized incident e{sup {minus}} (and preferably also the e{sup +}) beam. This polarization vector {rvec {omega}}{sub i} = ({omega}{sub 1} + {omega}{sub 2})/(1 + {omega}{sub 1}{omega}{sub 2}){cflx e}{sub z} can be used to construct the T odd rotationally invariant product ({rvec {omega}}{sub i} {times} {rvec p}{sub {mu}}). {rvec {omega}}{sub {mu}}, where {omega}{sub 1} and {omega}{sub 2} are longitudinal polarization vectors of e{sup {minus}} and e{sup +} respectively; {rvec p}{sub {mu}} and {rvec {omega}}{sub {mu}} are the momentum and ... continued below

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8 p.

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Tsai, Yung Su June 1, 1995.

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The {tau}{sup {plus_minus}}, highly polarized in the direction of the incident beam, can be obtained from the e{sup {plus_minus}} collider with the polarized incident e{sup {minus}} (and preferably also the e{sup +}) beam. This polarization vector {rvec {omega}}{sub i} = ({omega}{sub 1} + {omega}{sub 2})/(1 + {omega}{sub 1}{omega}{sub 2}){cflx e}{sub z} can be used to construct the T odd rotationally invariant product ({rvec {omega}}{sub i} {times} {rvec p}{sub {mu}}). {rvec {omega}}{sub {mu}}, where {omega}{sub 1} and {omega}{sub 2} are longitudinal polarization vectors of e{sup {minus}} and e{sup +} respectively; {rvec p}{sub {mu}} and {rvec {omega}}{sub {mu}} are the momentum and polarization of the muon in the decay {tau}{sup {minus}} {r_arrow} {mu}{sup {minus}} + {bar {nu}}{sub {mu}} + {nu}{sub {tau}}. T is violated by the existence of such a term. CP can be tested by comparing it with a similar term in {tau}{sup +} decay. If T violation in such a decay is milliweak or stronger, one can find it using the proposed polarized {tau}-charm factory with luminosity of 1 {approximately} 3 {times} 10{sup 33}/cm{sup 2}/sec. One can test whether T (and CP) violation is due to the charged Higgs boson exchange by doing a similar experiment for the {mu}{sup {plus_minus}} decay.

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8 p.

Notes

INIS; OSTI as DE95016510

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  • Workshop on the Tau/Charm Factory, Argonne, IL (United States), 21-23 Jun 1995

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  • Other: DE95016510
  • Report No.: SLAC-PUB--95-6916
  • Report No.: CONF-9506186--1
  • Grant Number: AC03-76SF00515
  • Office of Scientific & Technical Information Report Number: 106416
  • Archival Resource Key: ark:/67531/metadc623022

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  • June 1, 1995

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  • June 16, 2015, 7:43 a.m.

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  • Feb. 5, 2016, 7:13 p.m.

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Tsai, Yung Su. Test of T and CP violation in leptonic decay of {tau}{sup {plus_minus}}, article, June 1, 1995; Menlo Park, California. (digital.library.unt.edu/ark:/67531/metadc623022/: accessed September 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.