Nuclear muon capture by {sup 3}He: Meson exchange currents for the triton channel

Journal Article · Thu Feb 01 00:00:00 EST 1996 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.53.956· OSTI ID:278856

Congleton, J G ^[1]; Truhlik, E ^[2]

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1. Department of Physics, University of Newcastle, Newcastle upon Tyne, NE1 7RU (United Kingdom)
2. Institute of Nuclear Physics, Academy of Sciences of the Czech Republic, CZ 250 68 Rez near Prague (Czech Republic)

We have calculated exchange corrections for nuclear muon capture by {sup 3}He leading to the {sup 3}H final state using the hard-pion model and realistic nuclear wave functions. These currents modify the vector and axial part of the weak nuclear current. In their absence the rate is 12{percent} smaller than found by experiment. Our final result for the rate is 1502{plus_minus}32 per second. For the analyzing powers we find {ital A}{sub {ital v}}=0.515{plus_minus}0.005, {ital A}{sub {ital t}}={minus}0.375{plus_minus}0.004, and {ital A}{sub {Delta}}={minus}0.110{plus_minus}0.006. These predictions use the PCAC value of {ital g}{sub {ital P}}. The variation of the observables with {ital g}{sub {ital P}} is also reported. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 278856
• Journal Information: Physical Review, C, Vol. 53, Issue 2; Other Information: PBD: Feb 1996
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
HELIUM 3 TARGET
MUON REACTIONS
CAPTURE
POLARIZATION-ASYMMETRY RATIO
AXIAL-VECTOR CURRENTS
CORRECTIONS
HELIUM 3
WAVE FUNCTIONS