Phenomenological Lagrangian approach to the electromagnetic deuteron form factors

Abstract

A phenomenological Lagrangian approach is employed to study the electromagnetic properties of the deuteron. The deuteron is regarded as a weakly bound state of the proton and neutron. We construct a general form for the electromagnetic one-and two-body transition operators formulated in terms of the nucleon fields, which are then used in the calculation of the electromagnetic deuteron form factors. One of the two-body operators is responsible for explaining the quadrupole moment form factor. We show that in our approach the data on the deuteron form factors as well as on the differential cross section of elastic electron-deuteron scattering are well explained.

Radiative decay ofΛc(2940)+in a hadronic molecule picture

“…The composite structure of these possible molecular states is set up by the compositeness condition Z = 0 [18][19][20][21] (see also Refs. [15][16][17]).…”

Strong three-body decays ofΛc(2940)+in a hadronic molecule picture

“…[15], [18]- [20]. In particular, in [15,18,19] )) were analyzed within the structure assumption as hadronic molecules.…”

“…It was originally applied to the study of the deuteron as a bound state of proton and neutron [16] (see also Ref. [20] for a further application of this approach to the case of the deuteron). Then it was extensively used in low-energy hadron phenomenology as the master equation for the treatment of mesons and baryons as bound states of light and heavy constituent quarks (see e.g.…”

Deuteron transverse densities in holographic QCD

“…There are many theoretical approaches such as chiral effective and phenomenological approaches, perturbative QCD, potential and quark models, holographic QCD models etc. which have been extensively used to investigate the deuteron form factors [1,2,3,4,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50] whereas the generalized parton distributions (GPDs) for deuteron has been introduced in [51]. GPDs for the deuteron have been studied based on a phenomenological effective Lagrangian approach in [52].…”