Measurement of azimuthal hadron asymmetries in semi-inclusive deep inelastic scattering off unpolarised nucleons
- Adolph, C.
- Akhunzyanov, R.
- Alexeev, M. G.
- Alexandrov, Y.
- Alexeev, G. D.
- Amoroso, A.
- Andrieux, V.
- Anosov, V.
- Austregesilo, A.
- Badelek, 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, F.
- Braun, C.
- Bravar, A.
- Bressan, A.
- Buechele, M.
- Burtin, E.
- Capozza, L.
- Chiosso, M.
- Chung, S. U.
- Cicuttin, A.
- Crespo, M. L.
- Curiel, Q.
- Torre, S. Dalla
- Dasgupta, S. S.
- Dasgupta, S.
- Denisov, O. Yu.
- Donskov, S. V.
- Doshita, N.
- Duic, V.
- Duennweber, W.
- Dziewiecki, M.
- Efremov, A.
- Elia, C.
- Eversheim, P. D.
- Eyrich, W.
- Faessler, M.
- Ferrero, A.
- Filin, A.
- Finger, M.
- Tessaro, S.
- Tessarotto, F.
- Thibaud, F.
- Uhl, S.
- Uman, I.
- Vandenbroucke, M.
- Virius, M.
- Vondra, J.
- Wang, L.
- Weisrock, T.
- Wilfert, M.
- Windmolders, R.
- Wislicki, W.
- Wollny, H.
- Zaremba, K.
- Zavertyaev, M.
- Zemlyanichkina, E.
- Ziembicki, M.
DOIAbstract
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/c and a (LiD)-Li-6 target. The amplitudes of the three azimuthal modulations cos phi(h), cos 2 phi(h) and sin phi(h) were obtained binning the data separately in each of the relevant kinematic variables x, z or p(T)(h), and binning in a three-dimensional grid of these three variables. The amplitudes of the cos phi(h) and cos 2 phi(h) modulations show strong kinematic dependencies both for positive and negative hadrons
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