Observation of Parity Nonconservation in Møller Scattering

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ID: 270437
2004
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Abstract
We report a measurement of the parity-violating asymmetry in fixed target electron-electron (Møller) scattering: APV=[−175±30(stat)±20(syst)]×10−9. This first direct observation of parity nonconservation in Møller scattering leads to a measurement of the electron’s weak charge at low energy QWe=−0.053±0.011. This is consistent with the standard model expectation at the current level of precision: sin2θW(MZ)MS¯=0.2293±0.0024(stat)±0.0016(syst)±0.0006(theory).
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Authors P. L. Anthony,R. G. Arnold,C. Arroyo,K. Baird,K. Bega,J. Biesiada,P. E. Bosted,M. Breuer,R. Carr,G. D. Cates,J-P. Chen,E. Chudakov,M. Cooke,F. J. Decker,P. Decowski,A. Deur,W. Emam,R. Erickson,T. Fieguth,C. Field,J. Gao,K. Gustafsson,R. S. Hicks,R. Holmes,E. W. Hughes,T. B. Humensky,G. M. Jones,L. J. Kaufman,Yu. G. Kolomensky,Krishna Kumar,D. Lhuillier,R. Lombard-Nelsen,P. Mastromarino,B. Mayer,R. D. McKeown,R. Michaels,M. Olson,K. D. Paschke,G. A. Peterson,R. Pitthan,K. Pope,D. Relyea,S. E. Rock,O. Saxton,G. Shapiro,Jaideep Singh,P. A. Souder,Z. M. Szalata,W. A. Tobias,B. T. Tonguc,J. Turner,B. Tweedie,A. Vacheret,D. Walz,T. Weber,J. Weisend,D. Whittum,M. Woods,I. Younus;P. L. Anthony;R. G. Arnold;C. Arroyo;K. Baird;K. Bega;J. Biesiada;P. E. Bosted;M. Breuer;R. Carr;G. D. Cates;J-P. Chen;E. Chudakov;M. Cooke;F. J. Decker;P. Decowski;A. Deur;W. Emam;R. Erickson;T. Fieguth;C. Field;J. Gao;K. Gustafsson;R. S. Hicks;R. Holmes;E. W. Hughes;T. B. Humensky;G. M. Jones;L. J. Kaufman;Yu. G. Kolomensky;Krishna Kumar;D. Lhuillier;R. Lombard-Nelsen;P. Mastromarino;B. Mayer;R. D. McKeown;R. Michaels;M. Olson;K. D. Paschke;G. A. Peterson;R. Pitthan;K. Pope;D. Relyea;S. E. Rock;O. Saxton;G. Shapiro;Jaideep Singh;P. A. Souder;Z. M. Szalata;W. A. Tobias;B. T. Tonguc;J. Turner;B. Tweedie;A. Vacheret;D. Walz;T. Weber;J. Weisend;D. Whittum;M. Woods;I. Younus;
Journal physical review letters
Year 2004
DOI
10.1103/physrevlett.92.181602
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