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A general analysis of polarization observables for the $d(\gamma,\pi)NN$ reaction with polarized photons and/or oriented deuterons is presented. The unpolarized differential cross section, linear photon asymmetry, vector and tensor target…

Nuclear Theory · Physics 2007-05-23 Eed M. Darwish

Deuteron-deuteron elastic scattering and transfer reactions in the energy regime above four-nucleon breakup threshold are described by solving exact four-particle equations for transition operators. Several realistic nuclear interaction…

Nuclear Theory · Physics 2015-02-09 A. Deltuva , A. C. Fonseca

We performed an experimental search for the bound state singlet deuteron predicted in some microscopic calculations. The predicted energy of this metastable level is in vicinity of the deuteron disintegration threshold. This state should…

Nuclear Experiment · Physics 2019-04-24 T. Belgya , S. B. Borzakov , M. Jentschel , B. Maroti , Yu. N. Pokotilovski , L. Szentmiklosi

Three-body photodisintegration of 3He is calculated in the photon energy range 200 - 400 MeV assuming quasifree absorption on np pairs both in initial quasideuteron and singlet configurations. The model includes the normal nucleonic…

Nuclear Theory · Physics 2009-10-28 J. A. Niskanen , P. Wilhelm , H. Arenhoevel

New accurate measurement of tensor analyzing powers T20, T21 and T22 in deuteron photodisintegration has been performed. Wide-aperture non-magnetic detectors allowed to cover broad kinematic ranges in a single setup: photon energy = 25 to…

Incoherent photoproduction of eta-mesons on the deuteron is considered. The main attention is paid to the region above the S11(1535) resonance where rather narrow resonance like structure in the total cross section extracted for gamma n ->…

Nuclear Theory · Physics 2008-11-26 A. Fix , L. Tiator , M. V. Polyakov

Coherent photoproduction of eta mesons from the deuteron has been measured from threshold up to incident photon energies of 750 MeV using the photon spectrometer TAPS at the tagged photon facility at the Mainz microtron MAMI. For the first…

Incoherent $\eta$-photoproduction on the deuteron is studied for photon energies from threshold up to 720 MeV. The elementary $\gamma N \to \eta N$ amplitude is constructed in the frame of a conventional isobar model. Effects of final state…

Nuclear Theory · Physics 2009-10-30 A. Fix , H. Arenhoevel

Within a dynamical model, rescattering effects are studied in coherent pion photoproduction on the deuteron in the $\Delta$(1232) resonance region. The model consists of a system of coupled equations for the N$\Delta$, NN$\pi$ and NN…

Nuclear Theory · Physics 2009-10-30 P. Wilhelm , H. Arenhoevel

We analyze the energy dependence for two types of parity-non-conserving (PNC) asymmetries in the reaction $\gamma D\to np$ in the near-threshold region. The first one is the asymmetry in reaction with circularly polarized photon beam and…

Nuclear Theory · Physics 2016-09-08 M. Fujiwara , A. I. Titov

We calculate the two-body triton photodisintegration cross section as a function of photon energy to next-to-next-to leading order (NNLO) in pionless effective field theory (EFT($\pi \!\!/$)) and show good agreement with experiment. In…

Nuclear Theory · Physics 2025-08-22 Xincheng Lin , Jared Vanasse

The neutral pion photoproduction on the proton near threshold has a very small scattering cross section when compared to the charged channels, which in ChPT is explained by strong cancellations between the lowest order pieces. Therefore it…

High Energy Physics - Phenomenology · Physics 2016-06-22 Astrid Hiller Blin , Manuel Vicente Vacas , Tim Ledwig

The threshold electrodisintegration of the deuteron at backward angles is studied with a relativistic Hamiltonian, including a relativistic one-pion-exchange potential (OPEP) with off-shell terms as predicted by pseudovector coupling of…

Nuclear Theory · Physics 2008-11-26 A. Arriaga , R. Schiavilla

We study the lepton pair production in the photodisintegration of the deuteron process. The complete seven-fold differential cross section is calculated via the Bethe-Heitler mechanism with final state interactions taken into account. The…

High Energy Physics - Phenomenology · Physics 2022-10-20 Mengchu Cai , Tianbo Liu , Bo-Qiang Ma

The cross section asymmetry $\Sigma$ in deuteron disintegration with linearly polarized light is considered in the framework of the Bethe-Salpeter formalism. Relativistic contributions to the asymmetry are investigated within the…

Nuclear Theory · Physics 2007-05-23 K. Yu. Kazakov , D. V. Shulga

The first measurements of the differential cross section for the d(gamma,p)n reaction up to 4.0 GeV were performed at Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Lab. We report the cross sections at the proton…

Nuclear Experiment · Physics 2012-08-27 012 Collaboration , C. Bochna , B. P. Terburg et al

We study breakup of the deuteron induced by neutrinos in the neutral $\nu d\to \nu np$, $\bar{\nu} d\to \bar{\nu} np$ and the charged $\bar{\nu} d\to e^+ n n$, $\nu d\to e^- pp$ processes. Pionless effective field theory with dibaryon…

Nuclear Theory · Physics 2020-06-24 Shung-Ichi Ando , Young-Ho Song , Chang Ho Hyun

Deuteron Compton scattering below pion photoproduction threshold is considered in the framework of the non-relativistic diagrammatic approach with the Bonn OBE potential. The complete gauge-invariant set of diagrams is taken into account…

Nuclear Theory · Physics 2007-05-23 M. I. Levchuk , A. I. L'vov

Within the constituent quark model, we examine the extent to which the deuteron photo-disintegration at 2-6 GeV can be described by the quark-exchange mechanism. With the parameters constrained by the $np$ scattering, the calculated…

Nuclear Theory · Physics 2009-11-07 Bruno Julia-Diaz , T. -S. H. Lee

The contribution of the two-step process gamma + d -> p + n -> pi0 + d to the imaginary part of the amplitude for coherent pion production on the deuteron is calculated exploiting unitarity constraints. The result shows that this absorptive…

Nuclear Theory · Physics 2009-10-30 P. Wilhelm