Add to ORKGOur collaboration has used a detector system based on a non-magnetic pure CsI calorimeter at the Paul Scherrer Institute to collect the world's largest sample of rare pion and muon decays. We have measured the absolute +! 0e+º decay branching ratio with a 0.55 % total uncertainty. The +! e+º ° data set was used to extract weak axial and vector pion form factors FA and FV along with the branching ratios evaluated for broad kinematic regions. The +! e+ºº ° data were used to ¯nd the improved values of the Michel parameter ́ and to con¯rm the current value of the parameter . These results bring major improvements in accuracy over the current Particle Data Group listings, and agree well with the predictions of the Standard Model.
A search for the rare decays B-s(0) -> pi(+) pi-mu(+) mu-and B-0 -> pi(+) pi-mu(+) mu-is perfo...
International audienceThe study of pure leptonic electroweak processes, such as muon decay, is appro...
Within the dispersive approach to the amplitude of the rare decay pi0 -> e+e- the nontrivial dynamic...
The PIBETA collaboration has used a non-magnetic pure CsI calorimeter operating at the Paul Scherrer...
We have used the PIBETA detector at the PSI for a precise measurement of rare pion and muon weak dec...
Simple dynamics, few available decay channels, and highly controlled radiative and loop corrections,...
We have completed a set of measurements of the rare pion and muon decays: +! 0e+º, +! e+º, +! e+º°, ...
We have measured radiative pion pi+ → e+νγ (RPD), and muon µ+ → e+νν̄γ (RMD) decays, over broad phas...
The pion branching ratio (R^π = [formula omitted] ) is an auspicious observable for a test of the s...
Using the large acceptance PIBETA detector and a stopped pion beam we have made a precise measuremen...
The PIENU experiment at TRIUMF aims to measure the pion decay branching ratio, defined as the relati...
The branching ratio of the rare decay pi(0)-> e(+)e(-) has been measured precisely, using the comple...
The branching ratio of pion decays, RJ = J is one of the most accurately calculated decay processes ...
The author discusses the status of and prospects for the study of rare decays of kaons, muons, and p...
The experimental status of rare decays that violate muon number conservation is summarized, giving u...
A search for the rare decays B-s(0) -> pi(+) pi-mu(+) mu-and B-0 -> pi(+) pi-mu(+) mu-is perfo...
International audienceThe study of pure leptonic electroweak processes, such as muon decay, is appro...
Within the dispersive approach to the amplitude of the rare decay pi0 -> e+e- the nontrivial dynamic...
The PIBETA collaboration has used a non-magnetic pure CsI calorimeter operating at the Paul Scherrer...
We have used the PIBETA detector at the PSI for a precise measurement of rare pion and muon weak dec...
Simple dynamics, few available decay channels, and highly controlled radiative and loop corrections,...
We have completed a set of measurements of the rare pion and muon decays: +! 0e+º, +! e+º, +! e+º°, ...
We have measured radiative pion pi+ → e+νγ (RPD), and muon µ+ → e+νν̄γ (RMD) decays, over broad phas...
The pion branching ratio (R^π = [formula omitted] ) is an auspicious observable for a test of the s...
Using the large acceptance PIBETA detector and a stopped pion beam we have made a precise measuremen...
The PIENU experiment at TRIUMF aims to measure the pion decay branching ratio, defined as the relati...
The branching ratio of the rare decay pi(0)-> e(+)e(-) has been measured precisely, using the comple...
The branching ratio of pion decays, RJ = J is one of the most accurately calculated decay processes ...
The author discusses the status of and prospects for the study of rare decays of kaons, muons, and p...
The experimental status of rare decays that violate muon number conservation is summarized, giving u...
A search for the rare decays B-s(0) -> pi(+) pi-mu(+) mu-and B-0 -> pi(+) pi-mu(+) mu-is perfo...
International audienceThe study of pure leptonic electroweak processes, such as muon decay, is appro...
Within the dispersive approach to the amplitude of the rare decay pi0 -> e+e- the nontrivial dynamic...