Long lifetime components in the decay of excited super-heavy nuclei

Nuclear lifetime prolongation in resonant electron recombination processes

A. Pálffy1, Z. Harman1, C. Kozhuharov2, C. Brandau2, C. H. Keitel1, W. Scheid3, and T. Stöhlker2,4 1Max-Planck-Institut für Kernphysik, Heidelberg; 2GSI, Darmstadt, Germany; 3Justus-Liebig-Universität, Giessen; 4Ruprecht-Karls-Universität, Heidelberg The population and lifetime of nuclear excited states are affected by the electronic shells, especially in nuclear processes which directly involv...

KEWPIE2: A cascade code for the study of dynamical decay of excited nuclei

KEWPIE — a cascade code devoted to investigating the dynamical decay of excited nuclei, specially designed for treating very low probability events related to the synthesis of super-heavy nuclei formed in fusion-evaporation reactions — has been improved and rewritten in C++ programing language to become KEWPIE2. The current version of the code comprises various nuclear models concerning the lig...

Decay of Highly Excited Nuclei Emission of Intermediate Mass Fragments Normal to the Fission Axis in Hot Heavy Nuclei

Unstable quantum systems coupled via continuum and super-radiance

Excited states of a quantum system are unstable and decay into the continuum. The dynamics of the transmission quantum signal through a two-dimensional lattice with open decay channels coupled to the continuum is treated by means of a discretized effective non-Hermitian Hamiltonian. The energies and widths are treated as real and imaginary parts of complex eingenvalues for the effective Hamilto...

Mass and Lifetime at LHCb

The B c a meson is the ground state of the meson family formed by two different heavy flavor quarks, the anti-b quark and the c quark. The mass of the B c meson has been estimated theoretically to be in a range of 6.2-6.4 GeV/c [2]. Recently unquenched lattice QCD [3] gave the most accurate prediction of M(B c ) = 6278(6)(4) MeV/c , where the first error is statistical, and the second is system...