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Final analysis of p...
Final analysis of proton form factor ratio data at Q(2)=4.0, 4.8, and 5.6 GeV2
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Puckett, A. J. R. (author)
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Brash, E. J. (author)
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Gayou, O. (author)
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show more...
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Jones, M. K. (author)
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Pentchev, L. (author)
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Perdrisat, C. F. (author)
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Punjabi, V. (author)
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Aniol, K. A. (author)
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Averett, T. (author)
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Benmokhtar, F. (author)
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Bertozzi, W. (author)
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Bimbot, L. (author)
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Calarco, J. R. (author)
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Cavata, C. (author)
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Chai, Z. (author)
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Chang, C. -C. (author)
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Chang, T. (author)
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Chen, J. P. (author)
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Chudakov, E. (author)
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De Leo, R. (author)
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Dieterich, S. (author)
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Endres, R. (author)
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Epstein, M. B. (author)
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Escoffier, S. (author)
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- Fissum, Kevin (author)
- Lund University,Lunds universitet,Kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
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Fonvieille, H. (author)
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Frullani, S. (author)
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Gao, J. (author)
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Garibaldi, F. (author)
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Gilad, S. (author)
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Gilman, R. (author)
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Glamazdin, A. (author)
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Glashausser, C. (author)
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Gomez, J. (author)
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Hansen, J. -O. (author)
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Higinbotham, D. (author)
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Huber, G. M. (author)
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Iodice, M. (author)
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de Jager, C. W. (author)
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Jiang, X. (author)
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Khandaker, M. (author)
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Kozlov, S. (author)
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Kramer, K. M. (author)
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Kumbartzki, G. (author)
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LeRose, J. J. (author)
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Lhuillier, D. (author)
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Lindgren, R. A. (author)
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Liyanage, N. (author)
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Lolos, G. J. (author)
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Margaziotis, D. J. (author)
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Marie, F. (author)
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Markowitz, P. (author)
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McCormick, K. (author)
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Michaels, R. (author)
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Milbrath, B. D. (author)
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Nanda, S. K. (author)
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Neyret, D. (author)
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Piskunov, N. M. (author)
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Ransome, R. D. (author)
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Raue, B. A. (author)
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Roche, R. (author)
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Rvachev, M. (author)
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Salgado, C. (author)
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Sirca, S. (author)
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Sitnik, I. (author)
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Strauch, S. (author)
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Todor, L. (author)
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Tomasi-Gustafsson, E. (author)
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Urciuoli, G. M. (author)
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Voskanyan, H. (author)
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Wijesooriya, K. (author)
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Wojtsekhowski, B. B. (author)
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Zheng, X. (author)
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Zhu, L. (author)
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(creator_code:org_t)
- 2012
- 2012
- English.
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In: Physical Review C (Nuclear Physics). - 0556-2813. ; 85:4
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https://portal.resea... (primary) (free)
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http://dx.doi.org/10...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Subject headings
Close
- Precise measurements of the proton electromagnetic form factor ratio R = mu(p)G(E)(p)/G(M)(p) using the polarization transfer method at Jefferson Lab have revolutionized the understanding of nucleon structure by revealing the strong decrease of R with momentum transfer Q(2) for Q(2) greater than or similar to 1 GeV2, in strong disagreement with previous extractions of R from cross-section measurements. In particular, the polarization transfer results have exposed the limits of applicability of the one-photon-exchange approximation and highlighted the role of quark orbital angular momentum in the nucleon structure. The GEp-II experiment in Jefferson Lab's Hall A measured R at four Q(2) values in the range 3.5 GeV2 <= Q(2) <= 5.6 GeV2. A possible discrepancy between the originally published GEp-II results and more recent measurements at higher Q(2) motivated a new analysis of the GEp-II data. This article presents the final results of the GEp-II experiment, including details of the new analysis, an expanded description of the apparatus, and an overview of theoretical progress since the original publication. The key result of the final analysis is a systematic increase in the results for R, improving the consistency of the polarization transfer data in the high-Q(2) region. This increase is the result of an improved selection of elastic events which largely removes the systematic effect of the inelastic contamination, underestimated by the original analysis.
Subject headings
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
Find in a library
To the university's database
- By the author/editor
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Puckett, A. J. R ...
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Brash, E. J.
-
Gayou, O.
-
Jones, M. K.
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Pentchev, L.
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Perdrisat, C. F.
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show more...
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Punjabi, V.
-
Aniol, K. A.
-
Averett, T.
-
Benmokhtar, F.
-
Bertozzi, W.
-
Bimbot, L.
-
Calarco, J. R.
-
Cavata, C.
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Chai, Z.
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Chang, C. -C.
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Chang, T.
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Chen, J. P.
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Chudakov, E.
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De Leo, R.
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Dieterich, S.
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Endres, R.
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Epstein, M. B.
-
Escoffier, S.
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Fissum, Kevin
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Fonvieille, H.
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Frullani, S.
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Gao, J.
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Garibaldi, F.
-
Gilad, S.
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Gilman, R.
-
Glamazdin, A.
-
Glashausser, C.
-
Gomez, J.
-
Hansen, J. -O.
-
Higinbotham, D.
-
Huber, G. M.
-
Iodice, M.
-
de Jager, C. W.
-
Jiang, X.
-
Khandaker, M.
-
Kozlov, S.
-
Kramer, K. M.
-
Kumbartzki, G.
-
LeRose, J. J.
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Lhuillier, D.
-
Lindgren, R. A.
-
Liyanage, N.
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Lolos, G. J.
-
Margaziotis, D. ...
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Marie, F.
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Markowitz, P.
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McCormick, K.
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Michaels, R.
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Milbrath, B. D.
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Nanda, S. K.
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Neyret, D.
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Piskunov, N. M.
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Ransome, R. D.
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Raue, B. A.
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Roche, R.
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Rvachev, M.
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Salgado, C.
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Sirca, S.
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Sitnik, I.
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Strauch, S.
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Todor, L.
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Tomasi-Gustafsso ...
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Urciuoli, G. M.
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Voskanyan, H.
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Wijesooriya, K.
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Wojtsekhowski, B ...
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Zheng, X.
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Zhu, L.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Subatomic Physic ...
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Physical Review ...
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Lund University