Photo- and Electroproduction of the Hypertriton on 3He

Abstract

Differential cross sections of the photo- and electroproduction of the hypertriton have been calculated by utilizing modern nuclear wave functions and the elementary operator of KAON-MAID. It is found that a proper treatment of Fermi motion is essential for the two processes. While the average momentum approximation can partly simulate the Fermi motion in the process, the ``frozen nucleon'' assumption yields very different results, especially at lower energies. The Coulomb effect induced by the interaction between the positively charged kaon and the hypertriton is found to be negligible. The influence of higher partial waves is also found to be relatively small, in contrast to the finding of the previous work. The off-shell assumption is found to be very sensitive in the case of electroproduction rather than in photoproduction. It is shown that the few available experimental data favor the assumption that the initial nucleon is off-shell and the final hyperon is on-shell. This seems to be reasonable, since the hyperon in the hypertriton is less bound than the nucleon in the initial 3He nucleus. The effect of the missing resonance D_{13}(1895) is more profound in the longitudinal cross sections. Excluding this resonance reduces the longitudinal cross sections by one order of magnitude, but does not change the effects of various off-shell assumptions on the cross sections.

arXiv comment40 pages, 17 figures, submitted to Phys. Rev. C

References in corpus (23)

• Construction of high-quality Nucleon-Nucleon potential models
• Differential Cross Sections for gamma + p --> K+ + Y for Lambda and Sigma0 Hyperons
• Measurement of gamma p --> K+ Lambda and gamma p --> K+ Sigma0 at photon energies up to 2.6 GeV
• Evidence for a missing nucleon resonance in kaon photoproduction
• Gauge-invariant tree-level photoproduction amplitudes with form factors
• Ab initio approach to s-shell hypernuclei 3H_Lambda, 4H_Lambda, 4He_Lambda and 5He_Lambda with a Lambda N-Sigma N interaction
• Pi-mesonic decay of the hypertriton
• Kaon photoproduction in a multipole approach
• Separation of the Longitudinal and Transverse Cross Sections in the p(ee'K)Lambda and p(ee'K)Sigma Reactions
• The Hypertriton in Effective Field Theory
• The simplest ``strange'' three-body halo
• Analysis of the consistency of kaon photoproduction data with Lambda in the final state
• Inclusive $K^{+}$ and exclusive $K^{+}Y$ photoproduction on the deuteron: $\Lambda$- and $\Sigma$-threshold phenomena
• Resonances in $\Lambda d$ Scattering and the $\Sigma$-hypertriton
• K0 photoproduction on the deuteron and the extraction of the elementary amplitude
• The nonmesonic weak decay of the hypertriton
• Regularized zero-range model and an application to the triton and the hypertriton
• Electromagnetic Production of the Hypertriton
• Faddeev Calculation of the Hypertriton using the SU_6 Quark-Model Nucleon-Nucleon and Hyperon-Nucleon Interactions
• Polarization observables in exclusive kaon photoproduction on the deuteron
• The $pd{\to }^3{H}_{\Lambda }{K}^{+}$ reaction cross section
• On the Impossibility to Measure the Total Neutron- and Proton Induced Nonmesonic Decays for Hypertriton
• Threshold Production of the Hypertriton

Cited by in corpus (6)

• Coupled $K^{+}\Lambda$ and $K^0\Lambda$ photoproduction off the nucleon: Consequences from the recent CLAS and MAMI data and the $N(1680)P_{11}$ narrow state
• Are hyperon resonances required in the elementary $K^{+}\Lambda$ photoproduction?
• Extracting the pole and Breit-Wigner properties of nucleon and $\Delta$ resonances from the $\gamma N\to K\Sigma$ photoproduction
• Effects of the higher partial waves and relativistic terms on the accuracy of the calculation of the hypertriton electroproduction
• Effect of the transfer reactions for 16O+10B elastic scattering
• Some Phenomenological Aspects of Kaon Photoproduction in the Extreme Kinematics