Electromagnetic production of the hypertriton

Abstract

Kaon photoproduction on 3 He, γ + 3 He −→ K + + 3 Λ H, is studied in the framework of the impulse approximation. Realistic 3 He wave functions obtained as solutions of Faddeev equations with the Reid soft-core potential are used along with different 3 Λ H wave functions. Results are compared for several elementary operator models, which can successfully describe the elementary kaon production off the proton up to a photon lab energy of k = 2.2 GeV. It is found that the corresponding cross sections are small, of the order of several nanobarns. It is also shown that the influence of Fermi motion is important, while the effect of different off-shell assumptions on the cross section is not too significant. PACS number(s) : 13.60.Le, 25.20.Lj, 21.80.+a

Publisher's Note: Angular Distributions forHΛ3,4Bound States in theHeDohrmann1, Ahmidouch2, Armstrong3 et al. 2004Phys. Rev. Lett.111160View full textAdd to dashboardCite

“…3 shows the ratio R = σ lab ( 3,4 He)/σ lab ( 1 H) of the laboratory cross sections of 3,4 He(e, e ′ K + ) 3,4 Λ H to the cross section on the free proton. R is related to the nuclear form factor [13], where k is the three momentum transfer to the hypernucleus, S is a spin factor and W A combines phase space and flux factors. We calculate R(k) for our kinematics using W A = 2.1(1.68), k = 2.02(2.08), 2.19(2.23), 2.69(2.69) fm −1 for 3 Λ H ( 4 Λ H).…”

Electromagnetic Productions of the Hyperon and the Hypertriton Using Real and Virtual Photons

“…Contribution of the missing resonance D 13 (1895) in the hypertriton production is also found to be significant, espe- Results from the previous work [22] which have been obtained by using different nuclear wave functions and different elementary operator [23] are shown by the dash-dotted lines.…”

Photoproduction of Hyperon and Hypertriton at Forward Angles

“…Both photo-and electroproduction of the hypertriton have been predicted since more than one decade ago [12,13]. For this purpose, the nuclear transition matrix element can be calculated by inserting the…”