Showing papers in "Physics Letters B in 1968"

TL;DR: In this article, the authors suggest that Dalitz plots for 3π decays and annihilations are "measurements" of ππ scattering in the double spectral region, and that Veneziano's formula for crossing-symmetric Regge trajectories both justifies the external mass extrapolation and correctly predicts the experimental results.

TL;DR: In this paper, an excellent determination of the Cabbibo angle was obtained by relating it to strong interaction parameters through the requirement that weak self-masses be free of quadratic divergences.

TL;DR: Differential cross sections for 50 MeV alpha particles of members of the ground state rotational band up to the 6 + or 8 + state were measured in a number of even nuclei of the rare earth region.

TL;DR: In this article, the nuclear potentials for heavy nuclei have been determined by performing a least-squares fit to recent stripping and pickup data in the lead region for the single particle and hole energies.

TL;DR: In this paper, a generalization of Veneziano's model to the five particle amplitude was presented, which consists of multiple resonance exchanges and shows multi-regge behavior in all channels.

TL;DR: In this paper, πp phase shift analyses at 59 energies, linked with partial wave dispersion relation fits, suggest the probable existence of nine new nucleon resonances in the mass range 1680 −2190 MeV, all with very small branching ratios to the elastic channel.

TL;DR: In this article, a new approach to hadron dynamics which includes the combined effects of weak and electromagnetic interactions is described, where symmetry breakings in the strong Hamiltonians are determined by weak and magnetic forces in a self consistent way.

TL;DR: In this paper, all available experimentally determined absolute γ-ray transition probabilities between different intrinsic states in odd-and even-mass nuclei of the rare earth region (with neutron numbers 89 ⩽ N⩽ 114) and of the actinide region (N ⩾ 134) are compared to the Weisskopf estimate for different |ΔK| values.

TL;DR: In this article, the magnetic dipole transition form factor G∗M(q2) of the (γ NΔ)-vertex is derived for momentum transfers q2 = 0.2 − 2.34 (GeV/c)2.

TL;DR: In this paper, measurements of elastic proton-proton scattering at 19.2 and 21.1 GeV/c in the angular region where previously structure had been observed at lower energies were presented.

TL;DR: In this paper, the resonance energies and the partial widths are estimated by considering the compound states (or door-way states) formed by the two carbon nuclei, one of those in the first excited state and another in the ground state.

TL;DR: In this article, the DWBA approximation with a deformed spin-dependent potential of the full Thomas form was used to calculate the spin flip probabilities and the spin asymmetries.

TL;DR: A one-pion exchange pole-extrapolation analysis of K + p→K πΔ ++ at 7.3 GeV/c provides evidence for the existence of a broad scalar T = 1 2 K π resonance near 1.1GeV as discussed by the authors.

TL;DR: In this article, it was shown that the tree approximation currently utilized in connection with phenomenological chiral Lagrangians corresponds to a semiclassical approximation applied to the S-matrix in quantum field theory.

TL;DR: The muon's magnetic moment anomaly, and hence g-factor anomaly a = 1 2 (g-2), has been measured in the CERN muon storage ring.

TL;DR: In this paper, the transition from the ground states to the excited states at 7.66(12C), 6.44(24Mg), 4.98 and 6.35 MeV (40Ca) was studied with 30 to 60 MeV electrons at scattering angles from 105 to 165°.

TL;DR: In this paper, the cross sections and angular distributions for 4He(γ, p)3H and 4Heγ, n)3He have been measured and the cross section and angular distribution for 4

TL;DR: In this article, the level energies and spectroscopic factors for isotopes of P, Si, and S are calculated with a shell model which includes active particles in the 1d 5 2, 2s 1 2 and 1d 3 2 shells.

TL;DR: In this paper, the contribution of the strong collective states to the optical potential is removed by treating them explicitly through solution of the coupled equations describing the scattering, and the result is valid for both spherical and deformed nuclei over a broad mass range in the rare earth region.

TL;DR: In this article, a variational method is used to give rigorous upper bounds on the bound state energies, and a rigorous lower bound on the ground state energy is also obtained, and Faddeev's equations are solved keeping only the S-wave in two-body partial wave expansion.

TL;DR: In this paper, the distribution of single-proton strength in 209 Bi has been studied by means of the reaction 208 Pb(3 He, d) 209 Bi, and a spectroscopic factor of 0.06 is found.

TL;DR: In this article, partial rates in the capture of muons by 11B were measured for the ground state and first excited level of 11Be, and the transition between the hyperfine states of the μ-+11B mesonic atom was observed indirectly.

TL;DR: In this article, the ground state of 6 He was obtained by using both muon capture and radiative pion capture reactions in 6 Li yielding the ground states of 6 Li and 6 He.

TL;DR: In this paper, it was shown that the assumption that the imaginary parts of exchanged Regge contributions must cancel in channels which contain no resonances implies restrictions on the way in which SU(3) may be mixted and broken in the vector and tensor meson nonets; for example, the mixing angle should satisfy tan 2 ϵ = 1 2.

TL;DR: The effect of the coupling to the quadrupole moment of the phonon on the structure of the odd mass nuclei is shown to be of great importance as mentioned in this paper, which explains certain anomalous features in the low energy spectra of odd mass Ag-isotopes.

TL;DR: In this article, a generalized quasiparticle transformation is presented which includes n-n, p-p, and n-p (T = 0 and T = 1) pairing correlations.

TL;DR: In this article, the properties of vacuum exchange amplitudes in high energy π N scattering are deduced from a family of generalized superconvergent sum rules, through a range of t.

TL;DR: In this paper, a simple method for calculating the radius of the neutron distribution of a nucleus from the energy of the isobaric analog state and the charge radius was presented, and an r.m.s. radius larger than the proton radius by 0.07 ± 0.03 fm was obtained.