Tensor Ayy and vector Ay analyzing powers in the 1H(d, d′)X and 12C(d, d′)X reactions at initial deuteron momenta of 9 GeV/c in the region of baryonic resonance excitation
/ Authors
V. Ladygin, L. Azhgirey, S. Afanasiev, V. Arkhipov, V. K. Bondarev, Yu. T. Borzounov, G. Filipov, L. Golovanov, A. Isupov, V. Ivanov
and 15 more authors
A. Kartamyshev, V. A. Kashirin, A. Khrenov, V. Kolesnikov, V. A. Kuznetsov, N. Ladygina, A. Litvinenko, S. Reznikov, P. Rukoyatkin, Andrei Yu. Semenov, I. Semenova, G. Stoletov, A. P. Tzvinev, V. Zhmyrov, L. Zolin
/ Abstract
The angular dependence of the tensor Ayy and vector Ay analyzing powers in the inelastic scattering of deuterons with a momentum of 9.0 GeV/c on hydrogen and carbon has been measured. The range of measurements corresponds to the baryonic resonance excitation with masses of ∼2.2–2.6 GeV/c2. The Ayy data, being in good agreement with the previous results, demonstrate an approximate t scaling up to −1.5 (GeV/c)2. The large values of Ay show a significant role of the spin-dependent part of the elementary amplitude of the NN → NN* reaction. The results of the experiment are compared with model predictions of the plane-wave impulse approximation.
Journal: Physics of Atomic Nuclei