Niskanen, J. A

name

• Niskanen, J. A

Authored works

• [pi][sup -] absorption on the diproton in [sup 3]He
• A coupled channels model for the reaction pp̄ >[LAMBDA][LAMBDA]
• A new dynamic selection rule for pp̄ into two mesons
• A note on the Gamow-Teller sum rule with non-nucleonic degrees of freedom
• An approximate three-body treatment to the Coulomb break-up of the deuteron
• Annihilation branching ratios into three mesons in the s-wave quark rearrangement model
• Antiproton nuclear scattering in a microscopic potential model
• Antiproton-proton annihilation
• DCF-77 synkronoitu aikamerkkilaitteisto
• Efects of the 1s0 neutron proton pair on positiv pion absorption in 3He
• Kvanttimekaniikka II
• NN̄ annihilation and quark rearrangement model
• Nucleon-antinucleon bound states in a quark rearrangement model
• On the problem of K[sub S]K[sub S] VS. K[sub L]K[sub S] ratio inpp̄ annihilation
• Phase equivalent interactions and dibaryon masses
• Pion-nucleon scattering and the NN ->NN' coupling potential in a simple quark model
• Selective mechanisms for pp̄->K[subS]K[subS] vs. K[subS]K[subL] and pp̄->p[sup+][sup-](pi)[sup-][sup+]
• Some improvements in the coupled channels calculations of the reaction p+p->d+[pi][sup+]
• The [delta](1236)-resonance in the nucleon-nucleon interaction : applications to nuclear matter and pion production
• The differential cross section and polarization in p + p ->p d + [pi][su]
• The differential cross section and polarization in p+p ->d+[phi]+
• The effective interaction in [sup 3]He by Pandharipande's method
• The reaction p+p ->d+[pi][sup +] with a polarized beam and target
• The reaction pp - d[pi][sup+]

Works contributed to

• [sup -]NN scattering in the rearrangement model
• An extension of the [sup 13]P[sub 0] model for qq̄ annihilation
• Direct formation of n[sup-]n bound states in a single nucleon pickup
• From phenomenological to microscopic descriptions of NN̄ annihilation
• Low energy antiproton physics in the early LEAR era
• Low-energy scattering parameters and atomic level shifts in the systems p[sup -16]0, p[sup -32]S and p[sup -40]Ca
• NN̄ annihilation : the effect of one and two meson intermediate states
• NN̄ annihilation mechanisms
• On the energy levels in antiprotonic deuterium
• p + p ->d + [pi][sup +] p-wave production
• P-wave meson production in p+p ->d+[pi][sup +]
• pp annihilation into two mesons using the [sup 3]P[sub 0] model
• pp̄ annihilation in a quark rearrangement model including S and P waves
• pp̄ annihilation in an S-wave quark rearrangement model
• The [sup 3]P[sub 0] - versus [sup 3]S[sub 1] -models for quark-antiquark annihilation
• The effect of short range repulsions on NN̄ annihilation
• The effect of the [DELTA](1236) on the imaginary component of nucleon-nucleon phase shifts
• The effect on [alpha-alpha] bremsstrahlung of resonances in [sup 8]Pe
• The saturating effect of the [DELTA](1236) in nuclear matter

Works about Niskanen, J. A