The Two-Photon-Exchange and γZ-Exchange Corrections to parity-Violating Elastic Electron-Proton Scattering
| dc.creator | Zhou, Hai Qing | |
| dc.creator | Kao, Chung Wen | |
| dc.creator | Yang, Shin Nan | |
| dc.date | 2007-08-31 | |
| dc.date | 2007-09-02 | |
| dc.date.accessioned | 2026-07-07T11:42:07Z | |
| dc.date.available | 2026-07-07T11:42:07Z | |
| dc.description | Leading electroweak corrections play an important role in precision measurements of the strange form factors. We calculate the two-photon-exchange (TPE) and $γZ$-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 $γZ$-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 $G^s_E+βG^s_M$ extracted in recent experiments can be as large as -40% in certain kinematics. | |
| dc.description | 4 pages, 3 Figs | |
| dc.identifier | https://arxiv.org/abs/0708.4297 | |
| dc.identifier | http://arxiv.org/abs/0708.4297 | |
| dc.identifier | Phys.Rev.Lett.99:262001,2007; Erratum-ibid.100:059903,2008 | |
| dc.identifier | doi:10.1103/PhysRevLett.99.262001 10.1103/PhysRevLett.100.059903 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/200771 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | Nuclear Theory | |
| dc.title | The Two-Photon-Exchange and γZ-Exchange Corrections to parity-Violating Elastic Electron-Proton Scattering | |
| dc.type | text |