From a sample of about 10 φ mesons produced at DAΦNE, we have selected KL mesons tagged by observing KS → ππ decays. We present results on the major KL branching ratios, including those of the semileptonic decays needed for the determination of |Vus|. These branching ratio measurements are fully inclusive with respect to final-state radiation. The KL lifetime has also been measured.

The acute respiratory distress syndrome (ARDS) is an extreme form of lung injury characterised by disruption to the alveolar epithelium. KL-6 is a mucin-like glycoprotein expressed on type II pneumocytes. Circulating levels of KL-6 have diagnostic and prognostic significance in a number of interstitial lung diseases, and when elevated are thought to indicate disruption of the alveolar epithelia...

K → ππ, KL-KS mass difference and KL → γγ(∗) are studied systematically by decomposing their amplitude into a sum of factorizable and nonfactorizable ones. The former is calculated by using the naive factorization while the latter is assumed to be dominated by dynamical contributions of various hadron states. Non-factorizable amplitudes for the K → ππ decays are estimated by using a hard pion a...

Background: The circulating level of KL-6/MUC1 is a sensitive marker for various interstitial lung diseases. Previous case reports have suggested that KL-6 may also be increased in some patients with drug induced pneumonitis. A study was undertaken to determine whether serum KL-6 could be a marker for particular types of drug induced pneumonitis. Methods: The findings of high resolution compute...

BACKGROUND The circulating level of KL-6/MUC1 is a sensitive marker for various interstitial lung diseases. Previous case reports have suggested that KL-6 may also be increased in some patients with drug induced pneumonitis. A study was undertaken to determine whether serum KL-6 could be a marker for particular types of drug induced pneumonitis. METHODS The findings of high resolution compute...

OBJECTIVE To investigate the association between serum levels and clinical signs of lung fibrosis in patients with systemic sclerosis and inflammatory myopathies. METHODS ELISA tests for a mucin-like glycoprotein KL-6, von Willebrandt factor (vWF), soluble E-selectin (sES) and surfactant protein D (SP-D) were performed in sera of 104 patients with systemic sclerosis, 31 patients with poly/der...

BACKGROUND KL-6 is a mucin that is increased in interstitial lung diseases (ILD), and in some malignancies. CA 15-3, a tumor marker for breast cancer, refers to the same mucin but utilizes antibodies against different epitopes. OBJECTIVE The aim of our study was to evaluate CA 15-3 as a viable alternative to KL-6 as a for ILDs with and without fibrosis. DESIGN Serum from 242 patients with I...

The c-kit ligand (KL; Steel factor, mast cell growth factor, stem cell factor) is a hematopoietic factor that has been shown to act as a potent cofactor for hematopoietic growth and differentiation in vitro. The in vivo effects of KL, however, have been variable. To study the hematopoietic role of KL in vivo, we evaluated KL gene expression in both normal mice and mice recovering from myelosupp...

We study the KL and KS decays into four leptons (eēeē, μμ̄μμ̄, eēμμ̄) where we use a form factor motivated by vector meson dominance, and show the dependence of the branching ratios and spectra from the slopes. A precise determination of short distance contribution to KL → μμ is affected by our ignorance on the sign of the amplitude A(KL → γγ) but we show a possibility to measure the sign of this ...

These proceedings will discuss some preliminary results from the KTeV experiment at Fermilab, with an emphasis on CP-violation in the kaon system. Direct CP-violating topics include the measurement of Re( 0= ) and searches for the decays KL ! 0  and KL ! e e . A new indirect CP-violating observable in the decay KL ! + ee is also discussed.