Precision Measurement of PArity Violation in Polarized Cold Neutron Capture on the Proton: the NPDGamma Experiment

Lauss Bernhard,B Lauss,J D Bowman,R Carlini,T E Chupp, Wufan Chen, S Corvig,M Dabaghyan,D Desai,S J Freedman,Thomas R Gentile,M T Gericke, R C Gillis, G L Greene,F W Hersman,T Ino,Tetsuro Ito,G L Jones,M C Kandes,M Leuschner, B Lozowski, R Mahurin,M Mason,Y Masuda, Jin Mei,Gregory S Mitchell,Shunsuke Muto,H Nann,S A Page,S I Penttila,W D Ramsay,S Santra,P N Seo,E I Sharapov,T B Smith,W M Snow,W S Wilburn,V Yuan, Huican Zhu

PARTICLES AND NUCLEI（2006）

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摘要

The NPDGamma experiment at the Los Alamos Neutron Science Center (LANSCE) is dedicated to measure with high precision the parity violating asymmetry in the $\gamma$ emission after capture of spin polarized cold neutrons in para-hydrogen. The measurement will determine unambiguously the weak pion-nucleon-nucleon ($\pi NN$) coupling constant {\it f$^1_{\pi}$}

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关键词

spin polarization,parity,elementary particles,asymmetry,coupling constant,accuracy,coupling constants,neutrons,spin

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