scholarly journals $\mathrm{\cal T}$ -violation and $\mathrm{\cal CPT}$ -invariance measurements in the CPLEAR experiment: a detailed description of the analysis of neutral-kaon decays to $\mathrme \pi \nu$

2001 ◽  
Vol 22 (1) ◽  
pp. 55-79 ◽  
Author(s):  
A. Angelopoulos et al. ◽  
Keyword(s):  
Neutral Kaon ◽  
Kaon Decays ◽  
Cpt Invariance ◽  
T Violation

Limits on variances from symmetry in neutral kaon decays

1972 ◽  
Vol 330 (1582) ◽  
pp. 331-347 ◽  
Keyword(s):  
Experimental Data ◽  
Relative Magnitude ◽  
Neutral Kaon ◽  
Leptonic Decay ◽  
Kaon Decays ◽  
Conservative View ◽  
Better Than

An analysis is made o f the limits on the possible departures from CP -, T -, and TCP -invariance, both in the structure of K L and K S states and in the decay amplitudes to xx and xIv channels. A small violation of the requirements of CP - and T -invariance on the structure of K L and K S states can be deduced under quite plausible assumptions, but there is no evidence of any other departure from the requirements of CP -, or T -, or TCP -in variance. However, the present limit for one measure 8 of TCP -noninvariance is several times larger than the estim ated value of the corresponding CP - and T -noninvariance parameter or = Re<K L |K S >. Taking a conservative view of the experimental data, symmetry-violating parts of decay amplitudes are lim ited to better than 1 % for the I = 0 channel and to within a small percentage for the I = 2 channel, in relative magnitude. The corresponding limits which can be deduced for leptonic decay amplitudes are som ewhat larger but there are indications that symmetry-violating amplitudes are unlikely to exceed a small percentage in relative magnitude.

Measurement of the CP-Violation Parameterη+−γin Neutral Kaon Decays

1993 ◽  
Vol 70 (17) ◽  
pp. 2529-2532 ◽  
Author(s):  
E. J. Ramberg ◽  
G. J. Bock ◽  
R. Coleman ◽  
J. Enagonio ◽  
Y. B. Hsiung ◽  
...  
Keyword(s):  
Cp Violation ◽  
Neutral Kaon ◽  
Kaon Decays

scholarly journals Neutral Kaon Decays into Lepton Pairs

1970 ◽  
Vol 2 (1) ◽  
pp. 179-200 ◽  
Author(s):  
B. R. Martin ◽  
E. de Rafael ◽  
J. Smith
Keyword(s):  
Neutral Kaon ◽  
Kaon Decays ◽  
Lepton Pairs

CPT invariance tests in neutral kaon decay

2000 ◽  
Vol 15 (1-4) ◽  
pp. 509-512 ◽  
Author(s):  
P. Bloch
Keyword(s):  
Neutral Kaon ◽  
Kaon Decay ◽  
Cpt Invariance

scholarly journals TESTING RECIPROCITY AND CPT-INVARIANCE FOR NEUTRAL KAONS

2001 ◽  
Vol 16 (01) ◽  
pp. 9-17 ◽  
Author(s):  
G. V. DASS
Keyword(s):  
Direct Observation ◽  
Time Reversal ◽  
Neutral Kaon ◽  
Cpt Invariance ◽  
Neutral Kaons ◽  
Future Data ◽  
Model Independent ◽  
Standard Deviations

We point out that the time–reversal–invariant explanation of the recently observed CPLEAR asymmetry is valid at the level of less than three standard deviations; this asymmetry has been claimed to be the first direct observation of time–reversal–noninvariance in the neutral kaon system. We note how, by avoiding the assumptions made at present, future data may provide model-independent tests of structural T- and CPT-invariances of the neutral kaon complex.

scholarly journals RECENT RESULTS FROM THE KLOE EXPERIMENT

2005 ◽  
Vol 20 (02n03) ◽  
pp. 493-502
Author(s):  
◽  
GAIA LANFRANCHI
Keyword(s):  
Cross Section ◽  
Neutral Kaon ◽  
Initial State Radiation ◽  
Kaon Decays ◽  
Initial State ◽  
Hadronic Cross Section ◽  
State Radiation

Recent results obtained by the KLOE experiment operating at DAΦNE, the Frascati ϕ-factory, are presented. They mainly concern neutral kaon decays including rare KS decays, KL lifetime, the radiative ϕ→f0γ decay and the measurement of the e+e- hadronic cross section using initial state radiation.

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