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Exclusive measurement of the eta -> pi(+) pi(-) gamma decay
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- Adlarson, Patrik (author)
- Uppsala universitet,Kärnfysik
- Adolph, C. (author)
- Augustyniak, W. (author)
- show more...
- Bardan, W. (author)
- Bashkanov, M. (author)
- Bednarski, T. (author)
- Bergmann, F. S. (author)
- Berlowski, M. (author)
- Bhatt, H. (author)
- Brinkmann, K. -T (author)
- Buescher, M. (author)
- Calén, Hans (author)
- Clement, H (author)
- Coderre, D. (author)
- Czerwinski, E. (author)
- Doroshkevich, E. (author)
- Engels, R. (author)
- Erven, W. (author)
- Eyrich, W. (author)
- Fedorets, P. (author)
- Foehl, K. (author)
- Goldenbaum, F. (author)
- Goslawski, P. (author)
- Grigoryev, K. (author)
- Hanhart, C. (author)
- Heimlich, J. (author)
- Hejny, V. (author)
- Hinterberger, F. (author)
- Hodana, M. (author)
- Jany, A. (author)
- Jany, B. R. (author)
- Jarczyk, L. (author)
- Kamys, B. (author)
- Kemmerling, G. (author)
- Khakimova, O. (author)
- Khoukaz, A. (author)
- Kistryn, S. (author)
- Klaja, J. (author)
- Kleines, H. (author)
- Klos, B. (author)
- Kren, F. (author)
- Krzemien, W. (author)
- Kulessa, P. (author)
- Lalwani, K. (author)
- Lorentz, B. (author)
- Magiera, A. (author)
- Maier, R. (author)
- Marianski, B. (author)
- Meissner, U-G (author)
- Mikirtychiants, M. (author)
- Morsch, H. -P (author)
- Moskal, P. (author)
- Nandi, B. K. (author)
- Niedzwiecki, S. (author)
- Ohm, H. (author)
- Passfeld, A. (author)
- Pauly, C. (author)
- del Rio, E. Perez (author)
- Petri, T. (author)
- Petukhov, Y. (author)
- Piskunov, N. (author)
- Podkopal, P. (author)
- Povtoreyko, A. (author)
- Prasuhn, D. (author)
- Pricking, A. (author)
- Pysz, K. (author)
- Pyszniak, A. (author)
- Rausmann, T. (author)
- Ritman, J. (author)
- Roy, A. (author)
- Rudy, Z. (author)
- Sawant, S. (author)
- Schadmand, S. (author)
- Schmidt, A. (author)
- Sefzick, T. (author)
- Serdyuk, V. (author)
- Shah, N. (author)
- Siemaszko, M. (author)
- Siudak, R. (author)
- Skorodko, T. (author)
- Skurzok, M. (author)
- Smyrski, J. (author)
- Sopov, V. (author)
- Stassen, R. (author)
- Stepaniak, J. (author)
- Sterzenbach, G. (author)
- Stockhorst, H. (author)
- Stollenwerk, F. (author)
- Stroeher, H. (author)
- Szczurek, A. (author)
- Taeschner, A. (author)
- Tolba, T. (author)
- Trzcinski, A. (author)
- Varma, R. (author)
- Vlasov, P. (author)
- Wagner, G. J. (author)
- Weglorz, W. (author)
- Winnemoeller, A. (author)
- Wirzba, A. (author)
- Wronska, A. (author)
- Wuestner, P. (author)
- Wurm, P. (author)
- Yuan, X. (author)
- Yurev, L. (author)
- Zabierowski, J. (author)
- Zheng, C. (author)
- Zielinski, M. J. (author)
- Zipper, W. (author)
- Zupranski, P. (author)
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- (creator_code:org_t)
- Elsevier BV, 2012
- 2012
- English.
- In: Physics Letters B. - : Elsevier BV. - 0370-2693 .- 1873-2445. ; 707:2, s. 243-249
- Journal article (peer-reviewed)
Abstract
Subject headings
Close
- An exclusive measurement of the decay eta -> pi(+) pi(-) gamma has been performed at the WASA facility at COSY. The eta mesons were produced in the fusion reaction pd -> He-3 X at a proton beam momentum of 1.7 GeV/c. Efficiency corrected differential distributions have been extracted based on 13 960 +/- 140 events after background subtraction. The measured pion angular distribution is consistent with a relative p-wave of the two-pion system, whereas the measured photon energy spectrum was found at variance with the simplest gauge invariant matrix element of eta -> pi(+) pi(-) gamma. A parameterization of the data can be achieved by the additional inclusion of the empirical pion vector form factor multiplied by a first-order polynomial in the squared invariant mass of the pi(+) pi(-) system.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- eta meson
- Box anomaly
- Exclusive measurement
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
- Adlarson, Patrik
- Adolph, C.
- Augustyniak, W.
- Bardan, W.
- Bashkanov, M.
- Bednarski, T.
- show more...
- Bergmann, F. S.
- Berlowski, M.
- Bhatt, H.
- Brinkmann, K. -T
- Buescher, M.
- Calén, Hans
- Clement, H
- Coderre, D.
- Czerwinski, E.
- Doroshkevich, E.
- Engels, R.
- Erven, W.
- Eyrich, W.
- Fedorets, P.
- Foehl, K.
- Fransson, Kjell
- Goldenbaum, F.
- Goslawski, P.
- Grigoryev, K.
- Gullström, Carl- ...
- Hanhart, C.
- Heijkenskjöld, L ...
- Heimlich, J.
- Hejny, V.
- Hinterberger, F.
- Hodana, M.
- Höistad, Bo
- Jacewicz, Marek
- Jany, A.
- Jany, B. R.
- Jarczyk, L.
- Johansson, Tord
- Kamys, B.
- Kemmerling, G.
- Khakimova, O.
- Khoukaz, A.
- Kistryn, S.
- Klaja, J.
- Kleines, H.
- Klos, B.
- Kren, F.
- Krzemien, W.
- Kulessa, P.
- Kupsc, Andrzej
- Lalwani, K.
- Leupold, Stefan
- Lorentz, B.
- Magiera, A.
- Maier, R.
- Marianski, B.
- Marciniewski, Pa ...
- Meissner, U-G
- Mikirtychiants, ...
- Morsch, H. -P
- Moskal, P.
- Nandi, B. K.
- Niedzwiecki, S.
- Ohm, H.
- Passfeld, A.
- Pauly, C.
- del Rio, E. Pere ...
- Petri, T.
- Petukhov, Y.
- Piskunov, N.
- Plucinski, Pawel
- Podkopal, P.
- Povtoreyko, A.
- Prasuhn, D.
- Pricking, A.
- Pysz, K.
- Pyszniak, A.
- Rausmann, T.
- Redmer, Cristoph ...
- Ritman, J.
- Roy, A.
- Rudy, Z.
- Sawant, S.
- Schadmand, S.
- Schmidt, A.
- Sefzick, T.
- Serdyuk, V.
- Shah, N.
- Siemaszko, M.
- Siudak, R.
- Skorodko, T.
- Skurzok, M.
- Smyrski, J.
- Sopov, V.
- Stassen, R.
- Stepaniak, J.
- Sterzenbach, G.
- Stockhorst, H.
- Stollenwerk, F.
- Stroeher, H.
- Szczurek, A.
- Taeschner, A.
- Terschlüsen, Car ...
- Tolba, T.
- Trzcinski, A.
- Varma, R.
- Vlasov, P.
- Wagner, G. J.
- Weglorz, W.
- Winnemoeller, A.
- Wirzba, A.
- Wolke, Magnus
- Wronska, A.
- Wuestner, P.
- Wurm, P.
- Yuan, X.
- Yurev, L.
- Zabierowski, J.
- Zheng, C.
- Zielinski, M. J.
- Zipper, W.
- Zlomanczuk, Joze ...
- Zupranski, P.
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