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New determination of the eta transition form factor in the Dalitz decay eta -> e(+) e(-) gamma with the Crystal Ball/TAPS detectors at the Mainz Microtron
- Aguar-Bartolome, P. (author)
- Annand, J. R. M. (author)
- Arends, H. J. (author)
- show more...
- Bantawa, K. (author)
- Beck, R. (author)
- Bekrenev, V. (author)
- Berghaeuser, H. (author)
- Braghieri, A. (author)
- Briscoe, W. J. (author)
- Brudvik, J. (author)
- Cherepnya, S. (author)
- Codling, R. F. B. (author)
- Collicott, C. (author)
- Costanza, S. (author)
- Denig, A. (author)
- Downie, E. J. (author)
- Drexler, P. (author)
- Fil'kov, L. V. (author)
- Fix, A. (author)
- Glazier, D. I. (author)
- Gregor, R. (author)
- Hamilton, D. J. (author)
- Heid, E. (author)
- Hornidge, D. (author)
- Jaegle, I. (author)
- Jahn, O. (author)
- Jude, T. C. (author)
- Kashevarov, V. L. (author)
- Keshelashvili, I. (author)
- Kondratiev, R. (author)
- Korolija, M. (author)
- Kotulla, M. (author)
- Koulbardis, A. (author)
- Kruglov, S. (author)
- Krusche, B. (author)
- Lisin, V. (author)
- Livingston, K. (author)
- MacGregor, I. J. D. (author)
- Maghrbi, Y. (author)
- Manley, D. M. (author)
- Masjuan, P. (author)
- McGeorge, J. C. (author)
- McNicoll, E. F. (author)
- Mekterovic, D. (author)
- Metag, V. (author)
- Mushkarenkov, A. (author)
- Nefkens, B. M. K. (author)
- Nikolaev, A. (author)
- Novotny, R. (author)
- Ortega, H. (author)
- Ostrick, M. (author)
- Ott, P. (author)
- Otte, P. B. (author)
- Oussena, B. (author)
- Pedroni, P. (author)
- Pheron, F. (author)
- Polonski, A. (author)
- Prakhov, S. (author)
- Robinson, J. (author)
- Rosner, G. (author)
- Rostomyan, T. (author)
- Schumann, S. (author)
- Sikora, M. H. (author)
- Sober, D. I. (author)
- Starostin, A. (author)
- Strakovsky, I. I. (author)
- Suarez, I. M. (author)
- Supek, I. (author)
- Tarbert, C. M. (author)
- Thiel, M. (author)
- Thomas, A. (author)
- Unverzagt, M. (author)
- Watts, D. P. (author)
- Werthmueller, D. (author)
- Zehr, F. (author)
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- (creator_code:org_t)
- 2014
- 2014
- English.
- In: Physical Review C (Nuclear Physics). - 0556-2813. ; 89:4
- Journal article (peer-reviewed)
Abstract
Subject headings
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- The Dalitz decay eta -> e(+) e(-) gamma has been measured in the gamma p -> eta p reaction with the Crystal Ball and TAPS multiphoton spectrometers, together with the photon-tagging facility at the Mainz Microtron MAMI. The experimental statistic used in this work is one order of magnitude greater than in any previous measurement of eta -> e(+) e(-) gamma. The value obtained for the slope parameter Lambda(-2) of the eta transition form factor, Lambda(-2) = (1.95 +/- 0.15(stat) +/- 0.10(syst)) GeV-2, is in good agreement with recent measurements conducted in eta -> e(+) e(-) gamma and eta -> mu(+) mu(-) gamma decays, as well as with recent form-factor calculations. The uncertainty obtained in the value of Lambda(-2) is lower compared to results from previous measurements of the eta -> e(+) e(-) gamma decay.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
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- art (subject category)
- ref (subject category)
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- Aguar-Bartolome, ...
- Annand, J. R. M.
- Arends, H. J.
- Bantawa, K.
- Beck, R.
- Bekrenev, V.
- show more...
- Berghaeuser, H.
- Braghieri, A.
- Briscoe, W. J.
- Brudvik, J.
- Cherepnya, S.
- Codling, R. F. B ...
- Collicott, C.
- Costanza, S.
- Denig, A.
- Downie, E. J.
- Drexler, P.
- Fil'kov, L. V.
- Fix, A.
- Glazier, D. I.
- Gregor, R.
- Hamilton, D. J.
- Heid, E.
- Hornidge, D.
- Isaksson, Lennar ...
- Jaegle, I.
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- Keshelashvili, I ...
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- Korolija, M.
- Kotulla, M.
- Koulbardis, A.
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- Lisin, V.
- Livingston, K.
- MacGregor, I. J. ...
- Maghrbi, Y.
- Manley, D. M.
- Masjuan, P.
- McGeorge, J. C.
- McNicoll, E. F.
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- Metag, V.
- Mushkarenkov, A.
- Nefkens, B. M. K ...
- Nikolaev, A.
- Novotny, R.
- Ortega, H.
- Ostrick, M.
- Ott, P.
- Otte, P. B.
- Oussena, B.
- Pedroni, P.
- Pheron, F.
- Polonski, A.
- Prakhov, S.
- Robinson, J.
- Rosner, G.
- Rostomyan, T.
- Schumann, S.
- Sikora, M. H.
- Sober, D. I.
- Starostin, A.
- Strakovsky, I. I ...
- Suarez, I. M.
- Supek, I.
- Tarbert, C. M.
- Thiel, M.
- Thomas, A.
- Unverzagt, M.
- Watts, D. P.
- Werthmueller, D.
- Zehr, F.
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