Eur. Phys. J. A (2016) 52: 243
https://doi.org/10.1140/epja/i2016-16243-6

Regular Article - Theoretical Physics

Search for scaling onset in exclusive reactions with the lightest nuclei

¹ V.P. Dzhelepov Laboratory of Nuclear Problems, Joint Institute for Nuclear Research, Dubna, Russia
² Department of Physics, M.V. Lomonosov Moscow State University, Moscow, Russia
³ Dubna State University, Dubna, Russia

^* e-mail: uzikov@jinr.ru

Received: 30 September 2015
Accepted: 20 January 2016
Published online: 22 August 2016

Abstract

The dimensional scaling of the differential cross sections of binary reactions, , where n is given by constituent quark counting rules, was predicted for asymptotically high energies and transferred momenta at t/s = const (here s and t are the Mandelstam variables and m_i denotes a hadron mass), but manifested itself at surprisingly moderate energies of few GeV at large fixed cms angles . This behaviour is observed not only in reactions with free hadrons, but with the deuteron and ³He too, both for electromagnetic and pure hadronic interactions. One may suppose that the observed scaling points out to effective restoration of near-conformal and, probably, chiral symmetry in these processes. A systematical experimental study of the scaling behaviour of the reactions with the deuteron, ³H, ³He, and ⁴He nuclei is still absent. We consider a possibility to carry out this study in dd collisions at the JINR Nuclotron.