Observation of parity nonconservation in møller scattering.
Phys Rev Lett
; 92(18): 181602, 2004 May 07.
Article
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| MEDLINE
| ID: mdl-15169482
ABSTRACT
We report a measurement of the parity-violating asymmetry in fixed target electron-electron (Møller) scattering A(PV)=[-175+/-30(stat)+/-20(syst)] x 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 Q(e)(W)=-0.053+/-0.011. This is consistent with the standard model expectation at the current level of precision sin((2)theta(W)(M(Z))((-)MS)=0.2293+/-0.0024(stat)+/-0.0016(syst)+/-0.0006(theory).
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01-internacional
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MEDLINE
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En
Revista:
Phys Rev Lett
Año:
2004
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Article
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Estados Unidos
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EUA
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