Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-08-31
Phys.Rev.Lett.99:262001,2007; Erratum-ibid.100:059903,2008
Physics
High Energy Physics
High Energy Physics - Phenomenology
4 pages, 3 Figs
Scientific paper
10.1103/PhysRevLett.99.262001 10
Leading electroweak corrections play an important role in precision measurements of the strange form factors. We calculate the two-photon-exchange (TPE) and $\gamma Z$-exchange corrections to the parity-violating asymmetry of the elastic electron-proton scattering in a simple hadronic model including the finite size of the proton. We find both can reach a few percent and are comparable in size with the current experimental measurements of strange-quark effects in the proton neutral weak current. The effect of $\gamma Z$-exchange is in general larger than that of TPE, especially at low momentum transfer $Q^2\le 1 GeV^2$. Their combined effects on the values of $G^s_E+\beta G^s_M$ extracted in recent experiments can be as large as -40% in certain kinematics.
Kao Chung Wen
Yang Shin Nan
Zhou Hai Qing
No associations
LandOfFree
The Two-Photon-Exchange and γZ-Exchange Corrections to parity-Violating Elastic Electron-Proton Scattering does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Two-Photon-Exchange and γZ-Exchange Corrections to parity-Violating Elastic Electron-Proton Scattering, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Two-Photon-Exchange and γZ-Exchange Corrections to parity-Violating Elastic Electron-Proton Scattering will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-618050