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 L. Bellantoni Physics , 2005, Abstract: The implications of the published KTeV $K^0_L \to \pi^0\mu^+\mu^-$ result for interpreting recent $\Sigma^+ \to p\mu^+\mu^-$ results are discussed. The status of the KTeV $\Xi^0 \to \Sigma^+\mu^-\nu$ analysis is given. The KTeV $|V_{us}|$ result is also given.
 Physics , 2001, Abstract: Recent results are presented for (1) the charge asymmetry in semielectronic kaon decay; (2) the charge radius of the neutral kaon; (3) the decay Klong -> pi0 pi0 e+e-; (4) constraints on rho(CKM) from kaon decays; (5) lepton flavor violation. A few words about future kaon physics work at Fermilab are included.
 Physics , 2000, DOI: 10.1007/s100520000435 Abstract: Possible violation of CP, T and/or CPT symmetries in the $\ko$-$\kob$ system is studied from a phenomenological point of view. For this purpose, we first introduce parameters which represent violation of these symmetries in mixing parameters and decay amplitudes in a convenient and well-defined way and, treating these parameters as small, derive formulas which relate them to the experimentally measured quantities. We then perform numerical analyses, with the aid of the Bell-Steinberger relation, to derive constraints to these symmetry-violating parameters, firstly paying particular attention to the results reported by KTeV Collaboration and NA48 Collaboration, and then with the results reported by CPLEAR Collaboration as well taken into account. A case study, in which either CPT symmetry or T symmetry is assumed, is also carried out. It is demonstrated that CP and T symmetries are violated definitively at the level of 10^{-4} in $2\pi$ decays and presumably at the level of 10^{-3} in the $\ko-\kob$ mixing, and that the Bell-Steinberger relation helps us to establish CP and T violations being definitively present in the $\ko-\kob$ mixing and to test CPT symmetry to a level of 10^{-4} ~ 10^{-5}.
 E. Blucher Physics , 2000, DOI: 10.1142/S0217751X00005103 Abstract: The first measurement of epsilon-prime / epsilon from the KTeV experiment at Fermilab is described.
 M. J. Wilking Physics , 2006, Abstract: We present recent preliminary results from five decay channels. From the $K_L\to\pi^+\pi^-\gamma$ channel, we extract form factors for the CP violating M1 direct photon emission amplitude and the fraction of the total decay amplitude that is due to direct emission. We have placed an upper limit on the $K_L\to\pi^0\pi^0\gamma$ branching ratio, and preliminary measurements of the $K_L\to\pi^{\pm}e^{\mp}\nu e^+e^-$ and $\pi^0\to e^+e^-$ branching ratios are presented. Finally, we report measurements of both the branching ratio and the form factor parameters for the decay $K_L\to e^+e^-\gamma$.
 Leo Bellantoni Physics , 2000, Abstract: Rare decay results from KTeV are reviewed, emphasizing modes that in principle provide information about the CKM matrix. Our recent results in lepton flavor violating modes are also presented.
 N. Solomey Physics , 2000, DOI: 10.1063/1.1345252 Abstract: Results from the KTeV experiment at Fermilab using neutral Xi hyperons are presented, especially the first form-factor (FF) measurement from its semi-leptonic decay. This decay, which is an important test of the Standard Model, was observed for the first time using the 1997 KTeV experiment. We also report on the analysis of a large samples of neutral Xi weak radiative decays, and a search for the decay of a lightly bound $H^0$ dibaryon.
 R. Kessler Physics , 2001, DOI: 10.1142/S0217751X02012557 Abstract: Preliminary KTEV results are presented based on the 1997 data set, and include an improved measurement of Re(e'/e), CPT tests, and precise measurements of Tau_S and Delta M.
 Physics , 1999, DOI: 10.1103/PhysRevD.61.077302 Abstract: The recent results on the CP violating parameters Re(e'/e) and \Delta\phi = \phi_{00}-\phi_{+-} reported by the KTeV Collaboration are analyzed with a view to constrain CP, T and CPT violations in a decay process. Combining with some relevant data compiled by the Particle Data Group, we find Re(e_2-e_0) = (0.85 +- 3.11)*10^{-4} and Im(e_2-e_0) = (3.2 +- 0.7)*10^{-4}, where Re(e_I) and Im(e_I) represent respectively CP/CPT and CP/T violations in decay of K^0 and \bar{K^0} into a 2\pi state with isospin I.
 Michael Akashi-Ronquest for the KTeV collaboration Physics , 2010, Abstract: Data from the KTeV experiment have provided many opportunities for studies of fundamental symmetries in nature, not just CP. We present new limits on the lepton flavor violating decays K_L -> pi0 mu e, K_L -> pi0 pi0 mu e and pi0 -> mu e. We also present measurements of K_L -> pi0 gamma gamma and K_L -> pi0 e+ e- gamma which are relevant to the determination of the various contributions to K_L-> pi0 lepton anti-lepton. Finally, we present an analysis of the decay pi0 -> e+e-e+e-.
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