Eur. Phys. J. A (2020) 56: 211
https://doi.org/10.1140/epja/s10050-020-00215-8

Regular Article - Experimental Physics

Measurement of deuteron carbon vector analyzing powers in the kinetic energy range 170–380 MeV

¹ Institut für Kernphysik, Forschungszentrum Jülich, 52425, Jülich, Germany
² III. Physikalisches Institut B, RWTH Aachen University, 52056, Aachen, Germany
³ University of Ferrara and INFN, 44100, Ferrara, Italy
⁴ Department of Physics and Astronomy, Michigan State University, East Lansing, MI, 48824, USA
⁵ Institute of Nuclear, Physics Polish Academy of Sciences, 31342, Kraków, Poland
⁶ Laboratory of Nuclear Problems, Joint Institute for Nuclear Research, 141980, Dubna, Russia
⁷ Budker Institute of Nuclear Physics, 630090, Novosibirsk, Russia
⁸ JARA-FAME (Forces and Matter Experiments), Forschungszentrum Jülich and RWTH Aachen University, Aachen, Germany
⁹ High Energy Physics Institute, Tbilisi State University, 0186, Tbilisi, Georgia
¹⁰ Institute of Physics, Jagiellonian University, 30348, Kraków, Poland
¹¹ L.D. Landau Institute for Theoretical Physics, 142432, Chernogolovka, Russia
¹² Moscow Institute for Physics and Technology, 141700, Dolgoprudny, Russia
¹³ Research Institute for Nuclear Problems, Belarusian State University, 220030, Minsk, Belarus
¹⁴ Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, 141980, Dubna, Russia
¹⁵ Institut für Hochfrequenztechnik, RWTH Aachen University, 52056, Aachen, Germany
¹⁶ Zentralinstitut für Engineering, Elektronik und Analytik (ZEA-1), Forschungszentrum Jülich, 52425, Jülich, Germany
¹⁷ Indiana University Center for Spacetime Symmetries, Bloomington, IN, 47405, USA
¹⁸ INFN, 70125, Bari, Italy
¹⁹ Cornell University, Ithaca, NY, 14850, USA
²⁰ Dubna State University, 141980, Dubna, Russia
²¹ Department of Physics, M.V. Lomonosov Moscow State University, 119991, Moscow, Russia
²² Zentralinstitut für Engineering, Elektronik und Analytik (ZEA-2), Forschungszentrum Jülich, 52425, Jülich, Germany

^* e-mail: pretz@physik.rwth-aachen.de

Received: 18 March 2020
Accepted: 25 July 2020
Published online: 24 August 2020

Abstract

A measurement of vector analyzing powers in elastic deuteron-carbon scattering has been performed at the Cooler Synchrotron COSY of Forschungszentrum Jülich, Germany. Seven kinetic beam energies between 170 and 380 MeV have been used. A vector-polarized beam from a polarized deuteron source was injected, accelerated to the final desired energy and stored in COSY. A thin needle-shaped diamond strip was used as a carbon target, onto which the beam was slowly steered. Elastically scattered deuterons were identified in the forward direction using various layers of scintillators and straw tubes. Where data exist in the literature (at 200 and 270 MeV), excellent agreement of the angular shape was found. The beam polarization of the presented data was deduced by fitting the absolute scale of the analyzing power to these references. Our results extend the world data set and are necessary for polarimetry of future electric dipole moment searches at storage rings. They will as well serve as an input for theoretical description of polarized hadron-hadron scattering.