J. Macdonald

activity

20042009

most citedStudy of the decay K+ => pi+,nu,nubar in the momentum region 140<Ppi<199 MeV/c

333 citations · 349 across the 2 of their papers we have counts for

collaborators

Showing 2004Show all

4 papers · 1 filter

hep-ex2004

Measurement of the Michel Parameter $ρ$ in Muon Decay

TWIST Collaboration, J. R. Musser

The TWIST Collaboration has measured the Michel parameter $ρ$ in normal muon decay, $μ^{+} \to e^{+} ν_{e} ν ˉ_{μ}$ . In the Standard Model, $ρ$ = 3/4. Deviations from this value require…

hep-ex2004

Measurement of $K^{+} \to π^{0} π^{0} e^{+} ν$ ( $K_{e 4}^{00}$ ) decay using stopped positive kaons

S. Shimizu, K. Horie, M. Aliev +16

The $K^{+} \to π^{0} π^{0} e^{+} ν$ ( $K_{e 4}^{00}$ ) decay has been measured with stopped positive kaons for a data sample of 216 events. A comparison of the observed spectra with a Monte C…

hep-ex2004

A new limit of T-violating transverse muon polarization in the $K^{+} \to π^{0} μ^{+} ν$ decay

M. Abe, M. Aliev, V. Anisimovsky +27

A search for T-violating transverse muon polarization ( $P_{T}$ ) in the $K^{+} \to π^{0} μ^{+} ν$ decay was performed using kaon decays at rest. A new improved value, $P_T= -0.0017\pm 0.…

hep-ex2004

Improved Measurement of the K+ to pi+ nu nubar Branching Ratio

E949 Collaboration, A. V. Artamonov

An additional event near the upper kinematic limit for K+ to pi+ nu nubar has been observed by Experiment E949 at Brookhaven National Laboratory. Combining previously reported and…

Measurement of the Michel Parameter ρ in Muon Decay

Measurement of K+→π0π0e+ν (Ke400​) decay using stopped positive kaons

A new limit of T-violating transverse muon polarization in the K+→π0μ+ν decay

Improved Measurement of the K+ to pi+ nu nubar Branching Ratio

Measurement of the Michel Parameter $ρ$ in Muon Decay

Measurement of $K^{+} \to π^{0} π^{0} e^{+} ν$ ( $K_{e 4}^{00}$ ) decay using stopped positive kaons

A new limit of T-violating transverse muon polarization in the $K^{+} \to π^{0} μ^{+} ν$ decay