Rare K decay: results and prospects

Recent results on rare kaon decays are reviewed and prospects for future experiments are discussed.Comment: 14 pages, 11 figures, submitted to the Proc. 9th Intl. Symp. on Heavy Flavor Physic

Rare Kaon and Pion Decays

Recent results on rare kaon and pion decays are reviewed and prospects for future experiments are discussedComment: Lectures given at the PSI Summer School on Particle Physics 18-24 Aug 2002 32 pages Latex, 25 figure

Rare Kaon Decays

Recent results in and future prospects for the study of rare kaon decays are reviewed.Comment: 34 pages, 21 Postscript figures, submitted to the proceedings of the 2005 International School of Physics "E. Fermi", full resolution version at http://pubweb.bnl.gov/users/litt/www/LL_Varenna_05.ps.g

The effect of communication between the right and left liver on the outcome of surgical drainage for jaundice due to malignant obstruction at the hilus of the liver

Debate continues regarding the optimal management of irresectable malignant proximal biliary obstruction. Controversy exists concerning the ability of unilateral drainage to provide adequate biliary decompression with tumors that have occluded the communication between the right and left hepatic ductal systems. Between October 1986 and October 1989, 18 patients with malignant proximal biliary obstruction were treated by an intrahepatic biliary enteric bypass. Patients were divided into two groups based on the presence or absence of a communication between the right and left biliary systems. In Group I (n = 9), there was free communication; and in Group II (n = 9) there was no communication. There were two perioperative deaths (11%) one due to persistent cholangitis and the other to myocardial insufficiency both with one death in each group. The median survival (excluding perioperative deaths) was 5.6 months. Comparison of pre- and postoperative serum levels of bilirubin and alkaline phosphatase showed a significant decrease in each group, but no difference between the groups in the size of the reduction. Sixteen patients survived at least three months and the palliation was judged as excellent in eight, fair in five, and unchanged in three. These results demonstrate the effectiveness of biliary enteric bypass regardless of communication between the left and right biliary ductal systems.H. U. Baer, M. Rhyner, S. C. Stain, P. W. Glauser, A. R. Dennison, G. J. Maddern, and L. H. Blumgar

Towards results on direct CP violation in kaon decays from the CERN-SPS experiment NA48

The NA48 experiment aims to measure the direct CP violation parameter $\Re(\epsilon'/\epsilon)$ using the method of the double ratio with a precision of $2 \times 10^{-4}$. The experiment has collected data during 1997 and during 1998 and plans to produce a result based on the 1997 statistics soon. The status of the analysis and the perspectives for the future are outlined in this paper

Zur Standardisierung von Hepatitis B-Immunglobulinen

Peer Reviewe

Tests of the Standard Model Using Muon Polarization Asymmetries in Kaon Decays

We have examined the physics and the experimental feasibility of studying various kaon decay processes in which the polarization of a muon in the final state is measured. Valuable information on CP violation, the quark mixing (CKM) matrix, and new physics can be obtained from such measurements. We have considered muon polarization in K_L to mu+ mu- and K to pi mu+ mu- decays. Although the effects are small, or difficult to measure because of the small branching ratios involved, these studies could provide clean measurements of the CKM parameters. The experimental difficulty appears comparable to the observation of K to pi nu barnu. New sources of physics, involving non-standard CP violation, could produce effects observable in these measurements. Limits from new results on the neutron and electron electric dipole moment, and epsilon-prime over epsilon in neutral kaon decays, do not eliminate certain models that could contribute to the signal. A detailed examination of muon polarization out of the decay plane in KMU3 and radiative KMU2 decays also appears to be of interest. With current kaon beams and detector techniques, it is possible to measure the T-violating polarization for KMU3 with uncertainties approaching 0.0001. This level of sensitivity would provide an interesting probe of new physics.Comment: 24 pages, 3 figures, To be published in the International Journal of Modern Physics