Laser polarized muonic 3He and spin dependent μ− capture

MUON CAPTURE ON DEUTERON AND 3He: A PERSONAL REVIEW

“…40 we provide also the only available recent theoretical prediction for the recoil asymmetry A v , found to be 0.5350 ± 0.0014 with the AV18/UIX, in agreement with the experimental result of Ref. 36, 0.63 ± 0.09 (stat.) +0.11 −0.14 (syst.).…”

Induced pseudoscalar coupling of the proton weak interaction

“…Recently the first measurement of the recoil asymmetry in the 3 He → 3 H transition was accomplished by Souder et al (1998) at TRIUMF. The experiment utilized a 3 He ionization chamber to stop the incoming muons, repolarize the µ −3 He system, and track the triton recoils.…”

“…The experiment utilized a 3 He ionization chamber to stop the incoming muons, repolarize the µ −3 He system, and track the triton recoils. For experimental details see Bogorad et al (1997) and Souder et al (1998). The chamber had an instrumented volume of 140 cm 3 and a gas pressure of 8 bar.…”

Nuclear muon capture on the proton and 3 He within the standard model and beyond

“…These are certainly experimental challenges bordering on the impossible for certain of these polarization observables, but some experimentalists take up the task. For example, there exists a first-generation experiment [25] which measures the vector analyzing power of the outgoing triton in polarized muon capture on 3 He. Even though the preliminary results are yet not precise enough to be of use in a theoretical analysis, they certainly demonstrate that this specific difficult challenge can be met.…”

“…Once in the ground state, the degree of polarization may be increased again by external means [29,25], but not to any large degree and less than theoretically anticipated [30]. In fact, both the initial nucleus and muon need to be polarized in order to end up with a muonic atom ground state polarized to any degree [31].…”