Joint Institute for Nuclear Research Relativistic ... - Index of - JINR

RELATIVISTIC THEORY OF NUCLEON-NUCLEON INTERACTION
S.G. Bondarenko 1 , V.V. Burov 1† and E.P. Rogochaya 1
(1) Joint Institute for Nuclear research
† E-mail: burov@theor.jinr.ru
Recent developments ofthecovariant Bethe–Salpeter (BS)approach[1] withtheuse of
theseparable interactionforthedeuteronarereviewed. The procedureoftheconstruction
of the separable nucleon-nucleon (NN) interaction is discussed. Two different methods of
a relativistic generalization of initially nonrelativistic form factors parametrizing the kernel
are considered. The BS formalism with the separable interaction is demonstrated to
provide good results on description of NN phase shifts. Thus, the neutron-proton interaction
for the total angular momentum J = 0,1,2 partial state is obtained. Parameters of
the kernel are defined from the description of phase shifts and low-energy characteristics
in the elastic neutron-proton scattering. In order to take into account inelasticities the
real-valued separable potential elaborated earlier was extended complex one. Then the
description of the inelasticity parameter comes out of the imaginary part introduced in
the potential. The complex potential parameters are obtained using the available elastic
neutron-proton scattering experimental data up to 3 GeV. A signal of wide dibaryon
resonances in the 3 P + 0 partial wave state is discussed [2] - [8].
References
[1] S. G. Bondarenko, V. V. Burov, A. V. Molochkov, G. I. Smirnov and H. Toki, Prog.
Part. Nucl. Phys. 48, 449 (2002) [nucl-th/0203069].
[2] S. G. Bondarenko, V. V. Burov and E. P. Rogochaya, Phys. Lett. B 705, 264 (2011).
[3] S. G. Bondarenko, V. V. Burov and E. P. Rogochaya, JETP Lett. 94, 3 (2012)
[arXiv:1110.5775 [nucl-th]].
[4] S. G. Bondarenko, V. V. Burov and E. P. Rogochaya, Nucl. Phys. Proc. Suppl.
219-220, 126 (2011) [arXiv:1108.4170 [nucl-th]].
[5] S. G. Bondarenko, V. V. Burov and E. P. Rogochaya, arXiv:1106.4478 [nucl-th].
[6] S. G. Bondarenko, V. V. Burov and E. P. Rogochaya, Few Body Syst. 49, 121 (2011)
[arXiv:1008.0107 [nucl-th]].
[7] S. G. Bondarenko, V. V. Burov, W. -Y. P. Hwang and E. P. Rogochaya, Nucl. Phys.
A 848, 75 (2010) [arXiv:1002.0487 [nucl-th]].
[8] S. G. Bondarenko, V. V. Burov, E. P. Rogochaya and W. -Y. Pauchy Hwang, Nucl.
Phys. A 832, 233 (2010) [arXiv:0810.4470 [nucl-th]].
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