CERN Accelerating science

Article
Report number arXiv:1207.4301 ; CERN-PH-EP-2012-208 ; CERN-PH-EP-2012-208
Title Exclusive $\rho^0$ muoproduction on transversely polarised protons and deuterons
Author(s)

Adolph, C. (Erlangen - Nuremberg U.) ; Alekseev, M.G. (INFN, Trieste) ; Alexakhin, V.Yu. (Dubna, JINR) ; Alexandrov, Yu. (Lebedev Inst.) ; Alexeev, G.D. (Dubna, JINR) ; Amoroso, A. (Turin U. ; INFN, Turin) ; Antonov, A.A. (Dubna, JINR) ; Austregesilo, A. (CERN ; Munich, Tech. U.) ; Badelek, B. (Warsaw U.) ; Balestra, F. (Turin U. ; INFN, Turin) ; Barth, J. (Bonn U.) ; Baum, G. (Bielefeld U.) ; Bedfer, Y. (IRFU, SPhN, Saclay) ; Bernhard, J. (Mainz U., Inst. Kernphys.) ; Bertini, R. (Turin U. ; INFN, Turin) ; Bettinelli, M. (Munich U.) ; Bicker, K. (CERN ; Munich, Tech. U.) ; Bieling, J. (Bonn U.) ; Birsa, R. (INFN, Trieste) ; Bisplinghoff, J. (Bonn U., HISKP) ; Bordalo, P. (LIP, Lisbon) ; Bradamante, F. (Trieste U. ; INFN, Trieste) ; Braun, C. (Erlangen - Nuremberg U.) ; Bravar, A. (INFN, Trieste) ; Bressan, A. (Trieste U. ; INFN, Trieste) ; Buchele, M. (Freiburg U.) ; Burtin, E. (IRFU, SPhN, Saclay) ; Capozza, L. (IRFU, SPhN, Saclay) ; Chiosso, M. (Turin U. ; INFN, Turin) ; Chung, S.U. (Munich, Tech. U.) ; Cicuttin, A. (ICTP, Trieste ; INFN, Trieste) ; Crespo, M.L. (ICTP, Trieste ; INFN, Trieste) ; Dalla Torre, S. (INFN, Trieste) ; Das, S. (Matrivani Inst., Calcutta) ; Dasgupta, S.S. (Matrivani Inst., Calcutta) ; Dasgupta, S. (Matrivani Inst., Calcutta) ; Denisov, O.Yu. (INFN, Turin) ; Dhara, L. (Matrivani Inst., Calcutta) ; Donskov, S.V. (Serpukhov, IHEP) ; Doshita, N. (Yamagata U.) ; Duic, V. (Trieste U. ; INFN, Trieste) ; Dunnweber, W. (Munich U.) ; Dziewiecki, M. (Warsaw U. of Tech.) ; Efremov, A. (Dubna, JINR) ; Elia, C. (Trieste U. ; INFN, Trieste) ; Eversheim, P.D. (Bonn U., HISKP) ; Eyrich, W. (Erlangen - Nuremberg U.) ; Faessler, M. (Munich U.) ; Ferrero, A. (IRFU, SPhN, Saclay) ; Filin, A. (Serpukhov, IHEP) ; Finger, M. (Charles U.) ; Finger, M., Jr. (Dubna, JINR) ; Fischer, H. (Freiburg U.) ; Franco, C. (LIP, Lisbon) ; du Fresne von Hohenesche, N. (Mainz U., Inst. Kernphys. ; CERN) ; Friedrich, J.M. (Munich, Tech. U.) ; Frolov, V. (CERN) ; Garfagnini, R. (Turin U. ; INFN, Turin) ; Gautheron, F. (Ruhr U., Bochum (main)) ; Gavrichtchouk, O.P. (Dubna, JINR) ; Gerassimov, S. (Lebedev Inst. ; Munich, Tech. U.) ; Geyer, R. (Munich U.) ; Giorgi, M. (Trieste U. ; INFN, Trieste) ; Gnesi, I. (Turin U. ; INFN, Turin) ; Gobbo, B. (INFN, Trieste) ; Goertz, S. (Bonn U.) ; Grabmuller, S. (Munich, Tech. U.) ; Grasso, A. (Turin U. ; INFN, Turin) ; Grube, B. (Munich, Tech. U.) ; Gushterski, R. (Dubna, JINR) ; Guskov, A. (Dubna, JINR) ; Guthorl, T. (Freiburg U.) ; Haas, F. (Munich, Tech. U.) ; von Harrach, D. (Mainz U., Inst. Kernphys.) ; Heinsius, F.H. (Freiburg U.) ; Herrmann, F. (Freiburg U.) ; Hess, C. (Ruhr U., Bochum (main)) ; Hinterberger, F. (Bonn U., HISKP) ; Horikawa, N. (Chukyo U.) ; Hoppner, Ch. (Munich, Tech. U.) ; d'Hose, N. (IRFU, SPhN, Saclay) ; Ishimoto, S. (Yamagata U.) ; Ivanov, O. (Dubna, JINR) ; Ivanshin, Yu. (Dubna, JINR) ; Iwata, T. (Yamagata U.) ; Jahn, R. (Bonn U., HISKP) ; Jary, V. (Prague, Tech. U.) ; Jasinski, P. (Mainz U., Inst. Kernphys.) ; Jegou, G. (IRFU, SPhN, Saclay) ; Joosten, R. (Bonn U., HISKP) ; Kabuss, E. (Mainz U., Inst. Kernphys.) ; Kang, D. (Mainz U., Inst. Kernphys.) ; Ketzer, B. (Munich, Tech. U.) ; Khaustov, G.V. (Serpukhov, IHEP) ; Khokhlov, Yu.A. (Serpukhov, IHEP) ; Kisselev, Yu. (Ruhr U., Bochum (main)) ; Klein, F. (Bonn U.) ; Klimaszewski, K. (Warsaw, Inst. Nucl. Studies) ; Koblitz, S. (Mainz U., Inst. Kernphys.) ; Koivuniemi, J.H. (Ruhr U., Bochum (main)) ; Kolosov, V.N. (Serpukhov, IHEP) ; Kondo, K. (Yamagata U.) ; Konigsmann, K. (Freiburg U.) ; Konorov, I. (Lebedev Inst. ; Munich, Tech. U.) ; Konstantinov, V.F. (Serpukhov, IHEP) ; Korzenev, A. (IRFU, SPhN, Saclay) ; Kotzinian, A.M. (Turin U. ; INFN, Turin) ; Kouznetsov, O. (Dubna, JINR ; IRFU, SPhN, Saclay) ; Kramer, M. (Munich, Tech. U.) ; Kroumchtein, Z.V. (Dubna, JINR) ; Kunne, F. (IRFU, SPhN, Saclay) ; Kurek, K. (Warsaw, Inst. Nucl. Studies) ; Lauser, L. (Freiburg U.) ; Lednev, A.A. (Serpukhov, IHEP) ; Lehmann, A. (Erlangen - Nuremberg U.) ; Levorato, S. (Trieste U. ; INFN, Trieste) ; Lichtenstadt, J. (Tel Aviv U.) ; Liska, T. (Prague, Tech. U.) ; Maggiora, A. (INFN, Turin) ; Magnon, A. (IRFU, SPhN, Saclay) ; Makke, N. (IRFU, SPhN, Saclay ; Trieste U. ; INFN, Trieste) ; Mallot, G.K. (CERN) ; Mann, A. (Munich, Tech. U.) ; Marchand, C. (IRFU, SPhN, Saclay) ; Martin, A. (Trieste U. ; INFN, Trieste) ; Marzec, J. (Warsaw U. of Tech.) ; Matsuda, T. (Miyazaki U.) ; Meshcheryakov, G. (Dubna, JINR) ; Meyer, W. (Ruhr U., Bochum (main)) ; Michigami, T. (Yamagata U.) ; Mikhailov, Yu.V. (Serpukhov, IHEP) ; Moinester, M.A. (Tel Aviv U.) ; Morreale, A. (IRFU, SPhN, Saclay) ; Mutter, A. (Freiburg U. ; Mainz U., Inst. Kernphys.) ; Nagaytsev, A. (Dubna, JINR) ; Nagel, T. (Munich, Tech. U.) ; Negrini, T. (Freiburg U.) ; Nerling, F. (Freiburg U.) ; Neubert, S. (Munich, Tech. U.) ; Neyret, D. (IRFU, SPhN, Saclay) ; Nikolaenko, V.I. (Serpukhov, IHEP) ; Nowak, W.D. (Freiburg U.) ; Nunes, A.S. (LIP, Lisbon) ; Olshevsky, A.G. (Dubna, JINR) ; Ostrick, M. (Mainz U., Inst. Kernphys.) ; Padee, A. (Warsaw U. of Tech.) ; Panknin, R. (Bonn U.) ; Panzieri, D. (Turin U., Alessandria ; INFN, Turin) ; Parsamyan, B. (Turin U. ; INFN, Turin) ; Paul, S. (Munich, Tech. U.) ; Perevalova, E. (Dubna, JINR) ; Pesaro, G. (Trieste U. ; INFN, Trieste) ; Peshekhonov, D.V. (Dubna, JINR) ; Piragino, G. (Turin U. ; INFN, Turin) ; Platchkov, S. (IRFU, SPhN, Saclay) ; Pochodzalla, J. (Mainz U., Inst. Kernphys.) ; Polak, J. (Liberec Tech. U. ; Trieste U. ; INFN, Trieste) ; Polyakov, V.A. (Serpukhov, IHEP) ; Pretz, J. (Bonn U.) ; Quaresma, M. (LIP, Lisbon) ; Quintans, C. (LIP, Lisbon) ; Rajotte, J.F. (Munich U.) ; Ramos, S. (LIP, Lisbon) ; Rapatsky, V. (Dubna, JINR) ; Reicherz, G. (Ruhr U., Bochum (main)) ; Richter, A. (Erlangen - Nuremberg U.) ; Rocco, E. (CERN) ; Rondio, E. (Warsaw, Inst. Nucl. Studies) ; Rossiyskaya, N.S. (Dubna, JINR) ; Ryabchikov, D.I. (Serpukhov, IHEP) ; Samoylenko, V.D. (Serpukhov, IHEP) ; Sandacz, A. (Warsaw, Inst. Nucl. Studies) ; Sapozhnikov, M.G. (Dubna, JINR) ; Sarkar, S. (Matrivani Inst., Calcutta) ; Savin, I.A. (Dubna, JINR) ; Sbrizzai, G. (Trieste U. ; INFN, Trieste) ; Schiavon, P. (Trieste U. ; INFN, Trieste) ; Schill, C. (Freiburg U.) ; Schluter, T. (Munich U.) ; Schmidt, K. (Freiburg U.) ; Schmitt, L. (Munich, Tech. U.) ; Schonning, K. (CERN) ; Schopferer, S. (Freiburg U.) ; Schott, M. (CERN) ; Schroder, W. (Erlangen - Nuremberg U.) ; Shevchenko, O.Yu. (Dubna, JINR) ; Silva, L. (LIP, Lisbon) ; Sinha, L. (Matrivani Inst., Calcutta) ; Sissakian, A.N. (Dubna, JINR) ; Slunecka, M. (Dubna, JINR) ; Smirnov, G.I. (Dubna, JINR) ; Sosio, S. (Turin U. ; INFN, Turin) ; Sozzi, F. (INFN, Trieste) ; Srnka, A. (Inst. Sci. Instruments, Brno) ; Steiger, L. (INFN, Trieste) ; Stolarski, M. (LIP, Lisbon) ; Sulc, M. (Liberec Tech. U.) ; Sulej, R. (Warsaw, Inst. Nucl. Studies) ; Suzuki, H. (Yamagata U.) ; Sznajder, P. (Warsaw, Inst. Nucl. Studies) ; Takekawa, S. (INFN, Turin) ; Ter Wolbeek, J. (Freiburg U.) ; Tessaro, S. (INFN, Trieste) ; Tessarotto, F. (INFN, Trieste) ; Tkatchev, L.G. (Dubna, JINR) ; Uhl, S. (Munich, Tech. U.) ; Uman, I. (Munich U.) ; Vandenbroucke, M. (IRFU, SPhN, Saclay) ; Virius, M. (Prague, Tech. U.) ; Vlassov, N.V. (Dubna, JINR) ; Wang, L. (Ruhr U., Bochum (main)) ; Wilfert, M. (Mainz U., Inst. Kernphys.) ; Windmolders, R. (Bonn U.) ; Wislicki, W. (Warsaw, Inst. Nucl. Studies) ; Wollny, H. (Freiburg U. ; IRFU, SPhN, Saclay) ; Zaremba, K. (Warsaw U. of Tech.) ; Zavertyaev, M. (Lebedev Inst.) ; Zemlyanichkina, E. (Dubna, JINR) ; Ziembicki, M. (Warsaw U. of Tech.) ; Zhuravlev, N. (Dubna, JINR) ; Zvyagin, A. (Munich U.)

Publication 2012-12-01
Imprint 16 Jul 2012
Number of pages 20
Note Comments: 20 pages, 9 figures and 4 tables
20 pages, 9 figures and 4 tables, updated author list
In: Nucl. Phys. B 865 (2012) 1
DOI 10.1016/j.nuclphysb.2012.07.025
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN SPS ; COMPASS NA58
Free keywords electroweak interaction ; QCD ; experimental results ; COMPASS ; exclusive production ; rho^0 ; transversely polarized proton and deuteron targets
Abstract The transverse target spin azimuthal asymmetry A_UT in hard exclusive production of rho^0 mesons was measured at COMPASS by scattering 160 GeV/c muons off transversely polarised protons and deuterons. The measured asymmetry is sensitive to the nucleon helicity-flip generalised parton distributions E^q, which are related to the orbital angular momentum of quarks in the nucleon. The Q^2, x_B and p_t^2 dependence of A_UT is presented in a wide kinematic range. Results for deuterons are obtained for the first time. The measured asymmetry is small in the whole kinematic range for both protons and deuterons, which is consistent with the theoretical interpretation that contributions from GPDs E^u and E^d approximately cancel.
Copyright/License Preprint: © 2012-2024 CERN (License: CC-BY-3.0)

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