Two-photon-exchange contribution to proton form factors in both space-like and time-like regions

ZHOU Hai-Qing

doi:10.1088/1674-1137/34/6/042

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2024年10月30日

Chinese Physics C> 2010, Vol. 34> Issue(6) : 869-873 DOI: 10.1088/1674-1137/34/6/042

Two-photon-exchange contribution to proton form factors in both space-like and time-like regions

ZHOU Hai-Qing ^,

Department of Physics, Southeast University, Nanjing 211189, China

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Abstract：
The two two-photon exchange corrections to the unpolarized cross section and polarized observable P_T, P_L in elastic ep scattering are discussed in a simple hadronic model. Comparing with previous results, the Δ contribution are re-analysed. And the similar corrections in e⁺e^－→pp are also discussed.

References

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. Jones M K et al. Phys. Rev. Lett., 2000, 84: 1398; GayouO et al. Phys. Rev. Lett., 2002, 88: 0923012. Blunden P G , Melnitchouk W, Tjon J A. Phys. Rev. Lett.,2003, 91: 1423043. CHEN Y C et al. Phys. Rev. Lett., 2004, 93: 1223014. Borisyuk D, Kobushkin A. Phys. Rev. C, 2006, 74: 0652035. Borisyuk D, Kobushkin A. Phys. Rev. D, 2009, 79: 034001;Kivel N, Vanderhaeghen M. Phys. Rev. Lett., 2009, 103:0920046. Guichon P A M, Vanderhaeghen M. Phys. Rev. Lett., 2003,91: 1423037. Rekalo M P, Tomasi-Gustafsson E. Eur. Phys. J. A ,2004,22: 331-336; Nucl. Phys. A, 2004, 740: 271-286; Tomasi-Gustafsson E, Gakh G I. Phys. Rev. C, 2005, 72: 0152098. CHEN Y C, KAO C W, YANG S N. Phys. Lett. B, 2007652: 269-2749. Kondratyuk S et al. Phys. Rev. Lett., 2005, 95: 17250310. CHEN D Y, ZHOU H Q, DONG Y B. Phys. Rev. C, 2008,78: 045208; ZHOU H Q, CHEN D Y, DONG Y B. Phys.Lett. B, 2009, 675: 305-30711. ZHOU H Q et al. arXiv:0910.330712. Gilman R et al. JLab/Hall C exp. E-04-019

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ZHOU Hai-Qing. Two-photon-exchange contribution to proton form factors in both space-like and time-like regions[J]. Chinese Physics C, 2010, 34(6): 869-873. doi: 10.1088/1674-1137/34/6/042

ZHOU Hai-Qing. Two-photon-exchange contribution to proton form factors in both space-like and time-like regions[J]. Chinese Physics C, 2010, 34(6): 869-873. doi: 10.1088/1674-1137/34/6/042 shu

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Received: 2010-01-26
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Two-photon-exchange contribution to proton form factors in both space-like and time-like regions

ZHOU Hai-Qing ^,

Corresponding author: ZHOU Hai-Qing,

Department of Physics, Southeast University, Nanjing 211189, China

Received Date: 2010-01-26
Accepted Date: 1900-01-01
Available Online: 2010-06-05

Abstract:

The two two-photon exchange corrections to the unpolarized cross section and polarized observable P_T, P_L in elastic ep scattering are discussed in a simple hadronic model. Comparing with previous results, the Δ contribution are re-analysed. And the similar corrections in e⁺e^－→pp are also discussed.