Spin-averaged asymmetries in the azimuthal distributions of positive and negative hadrons produced in deep inelastic scattering were measured using the CERN SPS longitudinally polarised muon beam at 160 GeV/c160 GeV/c and a 6LiD target. The amplitudes of the three azimuthal modulations cos⁡ϕhcos⁡ϕh, cos⁡2ϕhcos⁡2ϕh and sin⁡ϕhsin⁡ϕh were obtained binning the data separately in each of the relevant kinematic variables x , z or View the MathML sourcepTh and binning in a three-dimensional grid of these three variables. The amplitudes of the cos⁡ϕhcos⁡ϕh and cos⁡2ϕhcos⁡2ϕh modulations show strong kinematic dependencies both for positive and negative hadrons.

Measurement of azimuthal hadron asymmetries in semi-inclusive deep inelastic scattering off unpolarised nucleons / Adolph, C.; Akhunzyanov, R.; Alexeev, M. G.; Alexandrov, Y. u.; Alexeev, G. D.; Amoroso, A.; Andrieux, V.; Anosov, V.; Austregesilo, A.; Badełek, B.; Balestra, F.; Barth, J.; Baum, G.; Beck, R.; Bedfer, Y.; Berlin, A.; Bernhard, J.; Bertini, R.; Bicker, K.; Bieling, J.; Birsa, R.; Bisplinghoff, J.; Bodlak, M.; Boer, M.; Bordalo, P.; Bradamante, Franco; Braun, C.; Bravar, A.; Bressan, Andrea; Büchele, M.; Burtin, E.; Capozza, L.; Chiosso, M.; Chung, S. U.; Cicuttin, A.; Crespo, M. L.; Curiel, Q.; DALLA TORRE, Silvia; Dasgupta, SHUDDHA SHANKAR; Dasgupta, S.; Denisov, O. Y. u.; Donskov, S. V.; Doshita, N.; Duic, Venicio; Dünnweber, W.; Dziewiecki, M.; Efremov, A.; Elia, C.; Eversheim, P. D.; Eyrich, W.; Faessler, M.; Ferrero, A.; Filin, A.; Finger, M.; Finger, M.; Fischer, H.; Franco, C.; du Fresne von Hohenesche, N.; Friedrich, J. M.; Frolov, V.; Garfagnini, R.; Gautheron, F.; Gavrichtchouk, O. P.; Gerassimov, S.; Geyer, R.; Giorgi, M.; Gnesi, I.; Gobbo, B.; Goertz, S.; Gorzellik, M.; Grabmüller, S.; Grasso, A.; Grube, B.; Guskov, A.; Guthörl, T.; Haas, F.; von Harrach, D.; Hahne, D.; Hashimoto, R.; Heinsius, F. H.; Herrmann, F.; Hinterberger, F.; Höppner, C. h.; Horikawa, N.; D'Hose, N.; Huber, S.; Ishimoto, S.; Ivanov, A.; Ivanshin, Y. u.; Iwata, T.; Jahn, R.; Jary, V.; Jasinski, P.; Joerg, P.; Joosten, R.; Kabuß, E.; Kang, D.; Ketzer, B.; Khaustov, G. V.; Khokhlov, Y. u. A.; Kisselev, Y. u.; Klein, F.; Klimaszewski, K.; Koivuniemi, J. H.; Kolosov, V. N.; Kondo, K.; Königsmann, K.; Konorov, I.; Konstantinov, V. F.; Kotzinian, A. M.; Kouznetsov, O.; Kral, Z.; Krämer, M.; Kroumchtein, Z. V.; Kuchinski, N.; Kunne, F.; Kurek, K.; Kurjata, R. P.; Lednev, A. A.; Lehmann, A.; Levorato, Stefano; Lichtenstadt, J.; Maggiora, A.; Magnon, A.; Makke, Nour; Mallot, G. K.; Marchand, C.; Martin, Anna; Marzec, J.; Matousek, J.; Matsuda, H.; Matsuda, T.; Meshcheryakov, G.; Meyer, W.; Michigami, T.; Mikhailov, Y. u. V.; Miyachi, Y.; Nagaytsev, A.; Nagel, T.; Nerling, F.; Neubert, S.; Neyret, D.; Nikolaenko, V. I.; Novy, J.; Nowak, W. D.; Nunes, A. S.; Orlov, I.; Olshevsky, A. G.; Ostrick, M.; Panknin, R.; Panzieri, D.; Parsamyan, B.; Paul, S.; Pesek, M.; Peshekhonov, D.; Piragino, G.; Platchkov, S.; Pochodzalla, J.; Polak, J.; Polyakov, V. A.; Pretz, J.; Quaresma, M.; Quintans, C.; Ramos, S.; Reicherz, G.; Rocco, E.; Rodionov, V.; Rondio, E.; Rychter, A.; Rossiyskaya, N. S.; Ryabchikov, D. I.; Samoylenko, V. D.; Sandacz, A.; Sarkar, S.; Savin, I. A.; Sbrizzai, G.; Schiavon, Paolo; Schill, C.; Schlüter, T.; Schmidt, A.; Schmidt, K.; Schmieden, H.; Schönning, K.; Schopferer, S.; Schott, M.; Shevchenko, O. Y. u.; Silva, L.; Sinha, L.; Sirtl, S.; Slunecka, M.; Sosio, S.; Sozzi, Federica; Srnka, A.; Steiger, L.; Stolarski, M.; Sulc, M.; Sulej, R.; Suzuki, H.; Szableski, A.; Szameitat, T.; Sznajder, P.; Takekawa, Stefano; ter Wolbeek, J.; Tessaro, S.; Tessarotto, F.; Thibaud, F.; Uhl, S.; Uman, I.; Vandenbroucke, M.; Virius, M.; Vondra, J.; Wang, L.; Weisrock, T.; Wilfert, M.; Windmolders, R.; Wiślicki, W.; Wollny, H.; Zaremba, K.; Zavertyaev, M.; Zemlyanichkina, E.; Ziembicki, M.. - In: NUCLEAR PHYSICS. B. - ISSN 0550-3213. - STAMPA. - 886:(2014), pp. 1046-1077. [10.1016/j.nuclphysb.2014.07.019]

Measurement of azimuthal hadron asymmetries in semi-inclusive deep inelastic scattering off unpolarised nucleons

BRADAMANTE, FRANCO;BRESSAN, Andrea;DALLA TORRE, SILVIA;DASGUPTA, SHUDDHA SHANKAR;DUIC, VENICIO;LEVORATO, STEFANO;Makke, Nour;MARTIN, ANNA;SCHIAVON, PAOLO;SOZZI, FEDERICA;TAKEKAWA, STEFANO;
2014-01-01

Abstract

Spin-averaged asymmetries in the azimuthal distributions of positive and negative hadrons produced in deep inelastic scattering were measured using the CERN SPS longitudinally polarised muon beam at 160 GeV/c160 GeV/c and a 6LiD target. The amplitudes of the three azimuthal modulations cos⁡ϕhcos⁡ϕh, cos⁡2ϕhcos⁡2ϕh and sin⁡ϕhsin⁡ϕh were obtained binning the data separately in each of the relevant kinematic variables x , z or View the MathML sourcepTh and binning in a three-dimensional grid of these three variables. The amplitudes of the cos⁡ϕhcos⁡ϕh and cos⁡2ϕhcos⁡2ϕh modulations show strong kinematic dependencies both for positive and negative hadrons.
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