{"paper":{"title":"Exclusive $\\omega$ meson muoproduction on transversely polarised protons","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. Bressan, A. Cicuttin, A. Efremov, A. Ferrero, A.G. Olshevsky, A. Grasso, A. Guskov, A. Ivanov, A. Lehmann, A. Maggiora, A. Magnon, A. Martin, A.M. Kotzinian, A. Nagaytsev, A. Rybnikov, A. Rychter, A. Sandacz, A. Selyunin, A.S. Nunes, A. Srnka, A. Szabelski, A. Zink, B. Badelek, B. Grube, B. Ketzer, B. Marianski, B. Parsamyan, C. Adolph, C. Braun, C. Chatterjee, C.D.R. Azevedo, C. Franco, C. Marchand, C. Quintans, C. Regali, C. Riedl, C. Santos, C.-Y. Hsieh, D. Hahne, D.I. Ryabchikov, D. Neyret, D. Panzieri, D. Steffen, D. von Harrach, D.V. Peshekhonov, E. Fuchey, E. Kabuss, E. Mitrofanov, E. R. Bielert, E. Seder, E. Zemlyanichkina, F. Balestra, F. Bradamante, F. Gautheron, F. Giordano, F. Haas, F. Herrmann, F.H. Heinsius, F. Hinterberger, F. Klein, F. Krinner, F. Kunne, F. Nerling, F. Pereira, F. Sozzi, F. Tessarotto, F. Thibaud, F. Tosello, G.D. Alexeev, G.K. Mallot, G. Nukazuka, G. Reicherz, G. Sbrizzai, G.V. Khaustov, G.V. Meshcheryakov, H. Fischer, H. Matsuda, H. Schmieden, H. Suzuki, I.A. Savin, I. Choi, I. Gnesi, I. Konorov, I. Orlov, J. Agarwala, J. Barth, J. Bernhard, J. Bisplinghoff, J.-C. Peng, J.H. Koivuniemi, J. Lichtenstadt, J. Marzec, J. Matousek, J.M. Friedrich, J. Novy, J. Pochodzalla, J. Pretz, J. Smolik, J. Ter Wolbeek, J. Veloso, J. Vondra, K. Bicker, K. Klimaszewski, K. Koenigsmann, K. Kondo, K. Kurek, K. Schmidt, K. Schoenning, K. Zaremba, L. Dhara, L. Silva, L. Sinha, M. Aghasyan, M. Bodlak, M. Boer, M. Buechele, M. Chiosso, M. Dziewiecki, M. Faessler, M. Finger, M. Finger Jr., M.G. Alexeev, M. Gorzellik, M. Grosse Perdekamp, M. Kraemer, M.L. Crespo, M. Levillain, M. Meyer, M. Mikhasenko, M. Ostrick, M. Pesek, M. Quaresma, M. Roskot, M. Slunecka, M. Stolarski, M. Sulc, M. Tasevsky, M. Virius, M. Wilfert, M. Zavertyaev, M. Ziembicki, N. dHose, N. Doshita, N. du Fresne von Hohenesche, N. Horikawa, N. Makins, N. Makke, N. Mitrofanov, N. Pierre, N.V. Anfimov, O.M. Kouznetsov, O.P. Gavrichtchouk, O.Yu. Denisov, O.Yu. Shevchenko, P. Bordalo, P.D. Eversheim, P. Joerg, P. Kremser, P. Montuenga, P. Schiavon, P. Sznajder, P. Zavada, Q. Curiel, R. Akhunzyanov, R. Beck, R. Birsa, R. Hashimoto, R. Heitz, R. Jahn, R. Joosten, R. Longo, R.P. Kurjata, R. Salac, S. Dalla Torre, S. Dasgupta, S. Gerassimov, S. Grabmueller, S. Huber, S. Ishimoto, S. Levorato, S. Paul, S. Platchkov, S. Ramos, S. Sarkar, S. Schopferer, S.S. Dasgupta, S. Sirtl, S. Takekawa, S. Tessaro, S.-U. Chung, S. Uhl, S.V. Donskov, S. Wallner, T. Grussenmeyer, T. Iwata, T. Matsuda, T. Michigami, T. Sawada, 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, V. Tskhay, W. Augustyniak, W.-C. Chang, W.-D. Nowak, W. Duennweber, W. Eyrich, W. Meyer, Y. Bedfer, Y. Kulinich, Y. Miyachi, Y.-S. Lian, Yu.A. Khokhlov, Yu. Ivanshin, Yu. Kisselev, Yu.V. Mikhailov, Z.V. Kroumchtein","submitted_at":"2016-06-12T15:07:04Z","abstract_excerpt":"Exclusive production of $\\omega$ mesons was studied at the COMPASS experiment by scattering $160~\\mathrm{GeV}/\\mathit{c}$ muons off transversely polarised protons. Five single-spin and three double-spin azimuthal asymmetries were measured in the range of photon virtuality $1~(\\mathrm{GeV}/\\mathit{c})^2 < Q^2 < 10~(\\mathrm{GeV}/\\mathit{c})^2$, Bjorken scaling variable $0.003 < x_{\\mathit{Bj}} < 0.3$ and transverse momentum squared of the $\\omega$ meson $0.05~(\\mathrm{GeV}/\\mathit{c})^2 < p_{T}^{2} < 0.5~(\\mathrm{GeV}/\\mathit{c})^2$. The measured asymmetries are sensitive to the nucleon helicity"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.03725","kind":"arxiv","version":2},"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"}