Tests for leptonic CP violation in tau decays
Conference
·
OSTI ID:10111869
At the Z{sup o} or a B factory, there are two tests for non-CKM-type leptonic CP violation in the {tau} {yields} {rho}{nu}(a{sub 1}{sup {minus}}{nu}) decay channel by inclusion of {rho}(a{sub 1}) polarimetry. By CP invariance, the moduli ratio of, and the phase difference between, the two helicity amplitudes for {tau}{sup {minus}} {yields} {rho}{sup {minus}}{nu}(a{sub 1}{sup {minus}}{nu}) decay should equal those for {tau}{sup +} {yields} {rho}{sup +}{anti {nu}}(a{sub 1}{sup +}{anti {nu}}) decay. Formulas are given for a L-handed {nu}{sub {tau}}, and also for an arbitrary mixture of {nu}{sub L} and {nu}{sub R} neutrino helicities. Statistical errors are listed for both the case that the {tau} {sup {minus}} momentum direction is not know, and when it is known via a silicon vertex detector.
- Research Organization:
- State Univ. of New York, Binghamton, NY (United States). Dept. of Physics
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG02-86ER40291
- OSTI ID:
- 10111869
- Report Number(s):
- DOE/ER/40291--25; CONF-940722--40; ON: DE95005927; BR: KA0101000
- Country of Publication:
- United States
- Language:
- English
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