{"paper":{"title":"Odd and Even Partial Waves of $\\eta\\pi^-$ and $\\eta'\\pi^-$ in $\\pi^-p\\to\\eta^{(\\prime)}\\pi^-p$ at $191\\,\\textrm{GeV}/c$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-ex"],"primary_cat":"hep-ex","authors_text":"A.A. Lednev, A. Amoroso, A. Austregesilo, A. Berlin, A. Bressan, A. Cicuttin, A. Efremov, A. Ferrero, A. Filin, A.G. Olshevsky, A. Grasso, A. Guskov, A. Ivanov, A. Lehmann, A. Maggiora, A. Magnon, A. Martin, A.M. Kotzinian, A. Nagaytsev, A. Rychter, A. Sandacz, A.S. Nunes, A. Srnka, A. Szabelski, A. Zink, B. Badelek, B. Gobbo, B. Grube, B. Ketzer, B. Parsamyan, C. Adolph, C. Braun, C. Elia, C. Franco, Ch. Hoeppner, C. Marchand, C. Quintans, C. Regali, C. Schill, D. Hahne, D.I. Ryabchikov, D. Neyret, D. Panzieri, D. von Harrach, D.V. Peshekhonov, E. Burtin, E. Kabuss, E. R. Bielert, E. Rocco, E. Zemlyanichkina, F. Balestra, F. Bradamante, F. Gautheron, F. Haas, F. Herrmann, F.H. Heinsius, F. Hinterberger, F. Klein, F. Kunne, F. Nerling, F. Sozzi, F. Tessarotto, F. Thibaud, G. Baum, G.D. Alexeev, G.K. Mallot, G. Meshcheryakov, G. Reicherz, G. Sbrizzai, G.V. Khaustov, H. Fischer, H. Matsuda, H. Schmieden, H. Suzuki, H. Wollny, I.A. Savin, I. Gnesi, I. Konorov, I. Orlov, I. Uman, J. Barth, J. Bernhard, J. Bieling, J. Bisplinghoff, J.H. Koivuniemi, J. Lichtenstadt, J. Marzec, J. Matousek, J.M. Friedrich, J. Novy, J. Pochodzalla, J. Pretz, J. Ter Wolbeek, K. Bicker, K. Klimaszewski, K. Koenigsmann, K. Kondo, K. Kurek, K. Schmidt, K. Schoenning, K. Zaremba, L. Capozza, L. Silva, L. Sinha, L. Steiger, L. Wang, M. Bodlak, M. Boer, M. Buechele, M. Chiosso, M. Dziewiecki, M. Faessler, M. Finger, M. Finger Jr., M.G. Alexeev, M. Gorzellik, M. Kraemer, M.L. Crespo, M. Levillain, M. Ostrick, M. Quaresma, M. Schott, M. Slunecka, M. Stolarski, M. Sulc, M. Virius, M. Wilfert, M. Zavertyaev, M. Ziembicki, N. d'Hose, N. Doshita, N. du Fresne von Hohenesche, N. Horikawa, N. Kuchinski, N. Makke, N.S. Rossiyskaya, O. Kouznetsov, O.P. Gavrichtchouk, O.Yu. Denisov, O.Yu. Shevchenko, P. Bordalo, P.D. Eversheim, P. Jasinski, P. Joerg, P. Schiavon, P. Sznajder, Q. Curiel, R. Akhunzyanov, R. Beck, R. Birsa, R. Geyer, R. Hashimoto, R. Jahn, R. Joosten, R. Panknin, R.P. Kurjata, R. Sulej, R. Windmolders, S. Dalla Torre, S. Dasgupta, S. Gerassimov, S. Goertz, S. Grabmueller, S. Huber, S. Ishimoto, S. Levorato, S. Neubert, S. Paul, S. Platchkov, S. Ramos, S. Sarkar, S. Schopferer, S.S. Dasgupta, S. Sirtl, S. Sosio, S. Takekawa, S. Tessaro, S.U. Chung, S. Uhl, S.V. Donskov, T. Grussenmeyer, T. Iwata, T. Matsuda, T. Michigami, T. Nagel, T. Schlueter, T. Szameitat, T. Weisrock, V. Andrieux, V. Anosov, V.A. Polyakov, V.D. Samoylenko, V. Duic, V.F. Konstantinov, V. Frolov, V.I. Nikolaenko, V. Jary, V.N. Kolosov, W.-D. Nowak, W. Duennweber, W. Eyrich, W. Meyer, Y. Bedfer, Y. Miyachi, Yu.A. Khokhlov, Yu. Ivanshin, Yu. Kisselev, Yu.V. Mikhailov, Z.V. Kroumchtein","submitted_at":"2014-08-19T10:36:10Z","abstract_excerpt":"Exclusive production of $\\eta\\pi^-$ and $\\eta'\\pi^-$ has been studied with a $191\\,\\textrm{GeV}/c$ $\\pi^-$ beam impinging on a hydrogen target at COMPASS (CERN). Partial-wave analyses reveal different odd/even angular momentum ($L$) characteristics in the inspected invariant mass range up to $3\\,\\textrm{GeV}/c^2$. A striking similarity between the two systems is observed for the $L=2,4,6$ intensities (scaled by kinematical factors) and the relative phases. The known resonances $a_2(1320)$ and $a_4(2040)$ are in line with this similarity. In contrast, a strong enhancement of $\\eta'\\pi^-$ over $"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1408.4286","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}