Measurement of the two-photon exchange contribution in elastic ep scattering at VEPP-3

A. V. Gramolin, J. Arrington, L. M. Barkov, V. F. Dmitriev, V. V. Gauzshtein, R. A. Golovin, R. J. Holt, V. V. Kaminsky, B. A. Lazarenko, S. I. Mishnev, N. Yu Muchnoi, V. V. Neufeld, D. M. Nikolenko, I. A. Rachek, R. Sh Sadykov, Yu V. Shestakov, V. N. Stibunov, D. K. Toporkov, H. de Vries, S. A. ZevakovV. N. Zhilich

Research School of High-Energy Physics

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

We report on the status of the Novosibirsk experiment on a precision measurement of the ratio R of the elastic e ⁺p and e ^-p scattering cross sections. Such measurements determine the two-photon exchange effect in elastic electron-proton scattering. The experiment is conducted at the VEPP-3 storage ring using a hydrogen internal gas target. The ratio R is measured with a beam energy of 1.6 GeV (electron/positron scattering angles are θ=55÷75° and θ=15÷25°) and 1 GeV (θ=65÷105°). We briefly describe the experimental method, paying special attention to the radiative corrections. Some preliminary results are presented.

Original language	English
Pages (from-to)	216-220
Number of pages	5
Journal	Nuclear Physics B - Proceedings Supplements
Volume	225-227
DOIs	https://doi.org/10.1016/j.nuclphysbps.2012.02.045
Publication status	Published - 1 Apr 2012

Keywords

Elastic electron-proton scattering
Electromagnetic form factors of the proton
Two-photon exchange

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Nuclear and High Energy Physics

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10.1016/j.nuclphysbps.2012.02.045

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Gramolin, A. V., Arrington, J., Barkov, L. M., Dmitriev, V. F., Gauzshtein, V. V., Golovin, R. A., Holt, R. J., Kaminsky, V. V., Lazarenko, B. A., Mishnev, S. I., Muchnoi, N. Y., Neufeld, V. V., Nikolenko, D. M., Rachek, I. A., Sadykov, R. S., Shestakov, Y. V., Stibunov, V. N., Toporkov, D. K., de Vries, H., ... Zhilich, V. N. (2012). Measurement of the two-photon exchange contribution in elastic ep scattering at VEPP-3. Nuclear Physics B - Proceedings Supplements, 225-227, 216-220. https://doi.org/10.1016/j.nuclphysbps.2012.02.045

Measurement of the two-photon exchange contribution in elastic ep scattering at VEPP-3. / Gramolin, A. V.; Arrington, J.; Barkov, L. M.; Dmitriev, V. F.; Gauzshtein, V. V.; Golovin, R. A.; Holt, R. J.; Kaminsky, V. V.; Lazarenko, B. A.; Mishnev, S. I.; Muchnoi, N. Yu; Neufeld, V. V.; Nikolenko, D. M.; Rachek, I. A.; Sadykov, R. Sh; Shestakov, Yu V.; Stibunov, V. N.; Toporkov, D. K.; de Vries, H.; Zevakov, S. A.; Zhilich, V. N.

In: Nuclear Physics B - Proceedings Supplements, Vol. 225-227, 01.04.2012, p. 216-220.

Research output: Contribution to journal › Article › peer-review

Gramolin, AV, Arrington, J, Barkov, LM, Dmitriev, VF, Gauzshtein, VV, Golovin, RA, Holt, RJ, Kaminsky, VV, Lazarenko, BA, Mishnev, SI, Muchnoi, NY, Neufeld, VV, Nikolenko, DM, Rachek, IA, Sadykov, RS, Shestakov, YV, Stibunov, VN, Toporkov, DK, de Vries, H, Zevakov, SA & Zhilich, VN 2012, 'Measurement of the two-photon exchange contribution in elastic ep scattering at VEPP-3', Nuclear Physics B - Proceedings Supplements, vol. 225-227, pp. 216-220. https://doi.org/10.1016/j.nuclphysbps.2012.02.045

Gramolin, A. V. ; Arrington, J. ; Barkov, L. M. ; Dmitriev, V. F. ; Gauzshtein, V. V. ; Golovin, R. A. ; Holt, R. J. ; Kaminsky, V. V. ; Lazarenko, B. A. ; Mishnev, S. I. ; Muchnoi, N. Yu ; Neufeld, V. V. ; Nikolenko, D. M. ; Rachek, I. A. ; Sadykov, R. Sh ; Shestakov, Yu V. ; Stibunov, V. N. ; Toporkov, D. K. ; de Vries, H. ; Zevakov, S. A. ; Zhilich, V. N. / Measurement of the two-photon exchange contribution in elastic ep scattering at VEPP-3. In: Nuclear Physics B - Proceedings Supplements. 2012 ; Vol. 225-227. pp. 216-220.

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abstract = "We report on the status of the Novosibirsk experiment on a precision measurement of the ratio R of the elastic e +p and e -p scattering cross sections. Such measurements determine the two-photon exchange effect in elastic electron-proton scattering. The experiment is conducted at the VEPP-3 storage ring using a hydrogen internal gas target. The ratio R is measured with a beam energy of 1.6 GeV (electron/positron scattering angles are θ=55÷75° and θ=15÷25°) and 1 GeV (θ=65÷105°). We briefly describe the experimental method, paying special attention to the radiative corrections. Some preliminary results are presented.",

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AU - Gramolin, A. V.

AU - Arrington, J.

AU - Barkov, L. M.

AU - Dmitriev, V. F.

AU - Gauzshtein, V. V.

AU - Golovin, R. A.

AU - Holt, R. J.

AU - Kaminsky, V. V.

AU - Lazarenko, B. A.

AU - Mishnev, S. I.

AU - Muchnoi, N. Yu

AU - Neufeld, V. V.

AU - Nikolenko, D. M.

AU - Rachek, I. A.

AU - Sadykov, R. Sh

AU - Shestakov, Yu V.

AU - Stibunov, V. N.

AU - Toporkov, D. K.

AU - de Vries, H.

AU - Zevakov, S. A.

AU - Zhilich, V. N.

PY - 2012/4/1

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N2 - We report on the status of the Novosibirsk experiment on a precision measurement of the ratio R of the elastic e +p and e -p scattering cross sections. Such measurements determine the two-photon exchange effect in elastic electron-proton scattering. The experiment is conducted at the VEPP-3 storage ring using a hydrogen internal gas target. The ratio R is measured with a beam energy of 1.6 GeV (electron/positron scattering angles are θ=55÷75° and θ=15÷25°) and 1 GeV (θ=65÷105°). We briefly describe the experimental method, paying special attention to the radiative corrections. Some preliminary results are presented.

AB - We report on the status of the Novosibirsk experiment on a precision measurement of the ratio R of the elastic e +p and e -p scattering cross sections. Such measurements determine the two-photon exchange effect in elastic electron-proton scattering. The experiment is conducted at the VEPP-3 storage ring using a hydrogen internal gas target. The ratio R is measured with a beam energy of 1.6 GeV (electron/positron scattering angles are θ=55÷75° and θ=15÷25°) and 1 GeV (θ=65÷105°). We briefly describe the experimental method, paying special attention to the radiative corrections. Some preliminary results are presented.

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KW - Electromagnetic form factors of the proton

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