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25 April 2024

» arxiv » 1503.0514

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Analysing powers and spin correlations in deuteron-proton charge exchange at 726 MeV
S. Dymov ; T. Azaryan ; Z. Bagdasarian ; S. Barsov ; J. Carbonell ; D. Chiladze ; R. Engels ; R. Gebel ; K. Grigoryev ; M. Hartmann ; A. Kacharava ; A. Khoukaz ; V. Komarov ; P. Kulessa ; A. Kulikov ; V. Kurbatov ; N. Lomidze ; B. Lorentz ; G. Macharashvili ; D. Mchedlishvili ; S. Merzliakov ; M. Mielke ; M. Mikirtychyants ; S. Mikirtychyants ; M. Nioradze ; H. Ohm ; D. Prasuhn ; F. Rathmann ; V. Serdyuk ; H. Seyfarth ; V. Shmakova ; H. Ströher ; M. Tabidze ; S. Trusov ; D. Tsirkov ; Yu. Uzikov ; Yu. Valdau ; C. Weidemann ; C. Wilkin ;
Date:	2 Mar 2015
Abstract:	The charge exchange of vector polarised deuterons on a polarised hydrogen target has been studied in a high statistics experiment at the COSY-ANKE facility at a deuteron beam energy of Td = 726 MeV. By selecting two fast protons at low relative energy E_{pp}, the measured analysing powers and spin correlations are sensitive to interference terms between specific neutron-proton charge-exchange amplitudes at a neutron kinetic energy of Tn ~ 1/2 Td =363 MeV. An impulse approximation calculation, which takes into account corrections due to the angular distribution in the diproton, describes reasonably the dependence of the data on both E_{pp} and the momentum transfer. This lends broad support to the current neutron-proton partial-wave solution that was used in the estimation.
Source:	arXiv, 1503.0514
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