Publications (321)
Super-Kamiokande Constraints on R-parity Violating Supersymmetry
Vadim Bednyakov, Amand Faessler, Sergey Kovalenko
We consider the neutrino oscillations within the minimal supersymmetric standard model with R-parity violation. The Super-Kamiokande atmospheric neutrino data are used to set limit…
Assessment of uncertainties in QRPA -decay nuclear matrix elements
V. A. Rodin, Amand Faessler, F. Å imkovic +1
The nuclear matrix elements of the neutrinoless double beta decay () of most nuclei with known -decay rates are systematically evaluated using the Quasi…
Neutrinoless Double Beta Decay of Ge76, Se82, Mo100 and Xe136 to excited 0^+ states
F. Simkovic, M. Nowak, W. A. Kaminski +2
The neutrinoless double beta decay transition to the first excited 0^+ collective final state is examined for A=76, 82, 100 and 136 nuclei by assuming light and heavy Majorana neut…
Role of isospin dependent mean field in pion production in heavy ion reactions
V. S. Uma Maheswari, C. Fuchs, Amand Faessler +2
The importance of a isospin dependent nuclear mean field (IDMF) in regard to the pion production mechanism is studied for the reaction at 1 GeV/nucleon using the Quantum Mo…
A covariant constituent quark/gluon model for the glueball-quarkonia content of scalar-isoscalar mesons
F. Giacosa, T. Gutsche, Amand Faessler
We analyze the mixing of the scalar glueball with the scalar-isoscalar quarkonia states above 1 GeV in a non-local covariant constituent approach. Similarities and differences to t…
Influence of the pion-nucleon interaction on the collective pion flow in heavy ion reactions
J. Zipprich, C. Fuchs, E. Lehmann +3
We investigate the influence of the real part of the in-medium pion optical potential on the pion dynamics in intermediate energy heavy ion reactions at 1 GeV/A. For different mode…
Double Beta Decay
Amand Faessler, Fedor Simkovic
We review the recent developments in the field of nuclear double beta decay, which is presently an important topic in both nuclear and particle physics. The mechanism of lepton num…
Neutrinoless double-beta decay and seesaw mechanism
Samoil M. Bilenky, Amand Faessler, Walter Potzel +1
From the standard seesaw mechanism of neutrino mass generation, which is based on the assumption that the lepton number is violated at a large (~10exp(+15) GeV) scale, follows that…
The pentaquark in the string model
M. I. Krivoruchenko, B. V. Martemyanov, Amand Faessler +1
We consider the pentaquark in the string model that correctly reproduces the linear Regge trajectories for the case of orbital excitations of light mesons an…
Pionic atoms probing pi-NN resonances
M. I. Krivoruchenko, B. V. Martemyanov, Amand Faessler +1
The pion optical potential generated by the hypothetical pi-NN-coupled NN-decoupled dibaryon resonance d'(2065) is calculated to the lowest order in nuclear matter density. The con…
Can LSND be included in a 3-Neutrino framework?
O. Haug, Amand Faessler, J. D. Vergados
We study the special features emerging from a three lepton generation analysis of the available neutrino oscillation data (solar, atmospheric and LSND). First we find that it is po…
Probing the nuclear equation of state by production in heavy ion collisions
C. Fuchs, Amand Faessler, E. Zabrodin +1
The dependence of production on the nuclear equation of state is investigated in heavy ion collisions. An increase of the excitation function of multiplicities obtained…
Hadronic electric dipole moments in R-parity violating supersymmetry
Amand Faessler, Thomas Gutsche, Sergey Kovalenko +1
We calculate the electric dipole moments (EDM) of the neutral Hg(199) atom, neutron and deuteron within a generic R-parity violating SUSY model (RPV SUSY) on the basis of a one-pio…
Ds0*(2317) and Ds1(2460) mesons in two-body B-meson decays
Amand Faessler, Thomas Gutsche, Sergey Kovalenko +1
We analyze the branching ratios of B to D(*) + Ds0*(Ds1) decays using the factorization hypothesis. The B to D(*) transition form factors are taken from a model-independent analysi…
Analytical description of the Coherent State Model for near vibrational and well deformed nuclei
A. A. Raduta, R. Budaca, Amand Faessler
Analytical formulas for the excitation energies as well as for the electric quadrupole reduced transition probabilities in the ground, beta and gamma bands were derived within the…
Elliptic flow at collider energies and cascade string models: The role of hard processes and multi-Pomeron exchanges
E. E. Zabrodin, C. Fuchs, L. V. Bravina +1
Centrality, rapidity, and transverse momentum dependence of hadron elliptic flow is studied in Au+Au collisions at BNL RHIC energies within the microscopic quark-gluon string model…
The CSM extension for description of the positive and negative parity bands in even-odd nuclei
A. A. Raduta, C. M. Raduta, Amand Faessler
A particle-core Hamiltonian is used to describe the lowest parity partner bands in Ra, U and Pu, and three parity partner bands, $K^Ï=1/2^…
Estimate for the X(3872) to gamma J/psi decay width
Yubing Dong, Amand Faessler, Thomas Gutsche +1
The X(3872) resonance is considered as a hadronic molecule, a loosely-bound state of charmed D0 and D*0 mesons, since its mass is very close to the D*0 barD0 threshold. Assuming st…
Neutrinoless double beta decay of deformed nuclei within QRPA with realistic interaction
Dong-Liang Fang, Amand Faessler, Vadim Rodin +1
In this paper a microscopic state-of-the-art approach to calculation of the nuclear matrix element for neutrinoless double beta decay with an account for nuclear deformat…
Density resummation of perturbation series in a pion gas to leading order in chiral perturbation theory
M. I. Krivoruchenko, C. Fuchs, B. V. Martemyanov +1
The mean field (MF) approximation for the pion matter, being equivalent to the leading ChPT order, involves no dynamical loops and, if self-consistent, produces finite renormalizat…
normal and anomalous suppressions in a hadron and string cascade model
Sa Ben-Hao, Amand Faessler, Tai An +4
A mechanism for the effective dissociation of a pair in the colour electric field of strings is introduced into a hadron and string cascade model, i.e. JPCIAE, which is…
NMEs for of two-nucleon mechanism for Ge
Dong-Liang Fang, Amand Faessler
In this work we present the first beyond closure calculation for the neutrinoless double beta decay () of Ge to the first states of Se. The isospin sym…
B_s(d) - bar B_s(d) mixing constraints on flavor changing decays of t and b quarks
Amand Faessler, Thomas Gutsche, Sergey Kovalenko +2
We study those dimension 6 effective operators which generate flavor-changing quark-gluon transitions of the third generation quarks, with t -> g + u(c) and b -> g + d(s), and whic…
Off shell behaviour of the in medium nucleon-nucleon cross section
C. Fuchs, Amand Faessler, M. El-Shabshiry
The properties of nucleon-nucleon scattering inside dense nuclear matter are investigated. We use the relativistic Brueckner-Hartree-Fock model to determine on-shell and half off-s…
The properties of the three-nucleon system with the dressed-bag model for nn interaction. I: New scalar three-body force
V. I. Kukulin, V. N. Pomerantsev, M. Kaskulov +1
A multi-component formalism is developed to describe three-body systems with nonstatic pairwise interactions and non-nucleonic degrees of freedom. The dressed-bag model for in…
Ground state particle-particle correlations and double beta decay
A. A. Raduta, P. Sarriguren, Amand Faessler +1
A self-consistent formalism for the double beta decay of Fermi type is provided. The particle-particle channel of the two-body interaction is considered first in the mean field equ…
Semileptonic decays of double heavy baryons in a relativistic constituent three-quark model
Amand Faessler, Thomas Gutsche, Mikhail A. Ivanov +2
We study the semileptonic decays of double heavy baryons using a manifestly Lorentz covariant constituent three-quark model. We present complete results on transition form factors…
The complete version of Moscow NN potential
Vladimir I. Kukulin, V. N. Pomerantsev, Amand Faessler
A complete version of the Moscow NN potential model is presented. The excellent description for all essential partial waves has been found in the energy range 0 -- 350 MeV. The one…
A solvable model which has X(5) as a limiting symmetry and removes some inherent drawbacks
A. A. Raduta, A. C. Gheorghe, P. Buganu +1
Solvable Hamiltonians for the and intrinsic shape coordinates are proposed. The eigenfunctions of the Hamiltonian are spheroidal periodic functions, while the Hamilt…
Relation between the and nuclear matrix elements revisited
Fedor Šimkovic, Rastislav Hodák, Amand Faessler +1
We show that the dominant Gamow-Teller part, , of the nuclear matrix element governing the neutrinoless decay is related to the matrix element g…
nuclear matrix elements and the occupancy of individual orbits
Fedor Simkovic, Amand Faessler, Petr Vogel
The measured occupancies of valence orbits in Ge and Se are used as a guideline for modification of the effective mean field energies that results in better descripti…
Dilepton production in proton-proton collisions at BEVALAC energies
Amand Faessler, C. Fuchs, M. I. Krivoruchenko +1
The dilepton production in elementary reactions at BEVALAC energies GeV is investigated. The calculations include direct decays…
Remarcs on the shape transition from spherical to deformed gamma unstable nuclei
A. A. Raduta, A. C. Gheorghe, Amand Faessler
Energies and transition probabilities for low lying states in Ba and $^{104$Ru were calculated within a hybrid model.The ground and the first states are described alt…
Semiclassical expansion of quantum characteristics for many-body potential scattering problem
M. I. Krivoruchenko, C. Fuchs, Amand Faessler
In quantum mechanics, systems can be described in phase space in terms of the Wigner function and the star-product operation. Quantum characteristics, which appear in the Heisenber…
Semiclassical features of rotational ground bands
A. A. Raduta, R. Budaca, Amand Faessler
A time dependent variational principle is used to dequantize a second order quadrupole boson Hamiltonian. The classical equations for the generalized coordinate and the constraint…
Strong decays of molecular states Zc(+) and Zc'(+)
Yubing Dong, Amand Faessler, Thomas Gutsche +1
The two newly observed hidden-charm mesons Zc(+)[3900] and a possible partner state Zc'(+)[3950] with quantum numbers J(P) = 1(+) are considered as hadronic molecules composed of b…
Equation of state at FAIR energies and the role of resonances
E. Zabrodin, I. C. Arsene, J. Bleibel +8
Two microscopic models, UrQMD and QGSM, are used to extract the effective equation of state (EOS) of locally equilibrated nuclear matter produced in heavy-ion collisions at energie…
Pseudorapidity shape of elliptic flow as signature for fast equilibration in relativistic heavy-ion collisions at energies up to sqrt(s) = 200 GeV
J. Bleibel, G. Burau, Amand Faessler +1
The implications of parton recombination processes on the dynamics of ultrarelativistic heavy-ion reactions are investigated. To do so, the quark-gluon string transport model has b…
The Role of the Resonance for Kaon Production in Heavy Ion Collisions
K. Tsushima, S. W. Huang, Amand Faessler
The long mean free path of mesons in nuclear matter makes this particle a suitable messenger for the dynamics of nucleus-nucleus reactions at intermediate energies (100 MeV t…
Dibaryon model for nuclear force and the properties of the system
V. N. Pomerantsev, V. I. Kukulin, V. T. Voronchev +1
The dibaryon model for interaction, which implies the formation of an intermediate six-quark bag dressed by a -field, is applied to the system, where it results in a…
Constraints to Coupling Constants of the Omega- and Sigma-Mesons with Dibaryons
Amand Faessler, A. J. Buchmann, M. I. Krivoruchenko
The effect of narrow dibaryon resonances to nuclear matter and structure of neutron stars is investigated in the mean-field theory (MFT) and in the relativistic Hartree approximati…
The 0nbb-decay nuclear matrix elements with self-consistent short-range correlations
Fedor Simkovic, Amand Faessler, Herbert Muther +2
A self-consistent calculation of nuclear matrix elements of the neutrinoless double beta decays (0nbb) of 76Ge, 82Se, 96Zr, 100Mo, 116Cd, 128Te, 130Te and 130Xe is presented in the…
Momentum, Density, and Isospin dependence of the Symmetric and Asymmetric Nuclear Matter Properties
E. N. E. van Dalen, C. Fuchs, Amand Faessler
Properties of symmetric and asymmetric nuclear matter have been investigated in the relativistic Dirac-Brueckner-Hartree-Fock approach based on projection techniques using the Bonn…
Uncertainties in the --decay nuclear matrix elements
Vadim Rodin, Amand Faessler, Fedor Simkovic +1
The nuclear matrix elements of the neutrinoless double beta decay () of most nuclei with known -decay rates are systematically evaluated using the Quasi…
Neutrino Oscillations and R-parity Violating Supersymmetry
O. Haug, J. D. Vergados, Amand Faessler +1
Using the neutrino oscillations and neutrinoless double beta decay experimental data we reconstructed an upper limit for the three generation neutrino mass matrix. We compared this…
The Triaxial Rotation Vibration Model in the Xe-Ba Region
U. Meyer, Amand Faessler, S. B. Khadkikar
The axial Rotation Vibration Model is here extended to describe also triaxial equilibrium shapes with beta and gamma vibrations allowing for the interaction between vibrations and…
Mass spectrum of the J^P=1/2^- and 3/2^- pentaquark antidecuplets in the perturbative chiral quark model
T. Inoue, V. E. Lyubovitskij, Th. Gutsche +1
We study the recently discovered Theta^+ baryon in the context of the perturbative chiral quark model. The basic configuration of the Theta^+ is set up as a pentaquark bound state,…
Dependence of nucleon properties on pseudoscalar meson masses
Amand Faessler, Thomas Gutsche, Valery E. Lyubovitskij +1
We discuss the sensitivity of nucleon properties (mass, magnetic moments and electromagnetic form factors) on the variation of the pseudoscalar meson masses in the context of the p…
Two-neutrino double-beta decay Fermi transition and two-nucleon interaction
Dusan Stefanik, Fedor Simkovic, Kazuo Muto +1
An exactly solvable model for a description of the two-neutrino double beta decay transition of the Fermi type is considered. By using perturbation theory an explicit dependence of…
Weyl's symbols of Heisenberg operators of canonical coordinates and momenta as quantum characteristics
M. I. Krivoruchenko, Amand Faessler
The knowledge of quantum phase flow induced under the Weyl's association rule by the evolution of Heisenberg operators of canonical coordinates and momenta allows to find the evolu…
The d'-dibaryon in a colored cluster model
A. J. Buchmann, Georg Wagner, Amand Faessler
We calculate the mass and structure of a J^P=0^-, T=0 six-quark system using a colored diquark-tetraquark cluster wave function and a nonrelativistic quark model Hamiltonian. The c…
Anatomy of nuclear matrix elements for neutrinoless double-beta decay
Fedor Simkovic, Amand Faessler, Vadim Rodin +2
We show that, within the Quasiparticle Random Phase Approximation (QRPA) and the renormalized QRPA (RQRPA) based on the Bonn CD nucleon-nucleon interaction, the competition between…
Competing electric and magnetic excitations in backward electron scattering from heavy deformed nuclei
R. Nojarov, Amand Faessler, M. Dingfelder
Important contributions to the cross sections of low-lying orbital excitations are found in heavy deformed nuclei, arising from the small energy separati…
Phenomenological Lagrangian approach to the electromagnetic deuteron form factors
Yubing Dong, Amand Faessler, Thomas Gutsche +1
A phenomenological Lagrangian approach is employed to study the electromagnetic properties of the deuteron. The deuteron is regarded as a weakly bound state of the proton and neutr…
Scalar nonet quarkonia and the scalar glueball: mixing and decays in an effective chiral approach
F. Giacosa, Th. Gutsche, V. E. Lyubovitskij +1
We study the strong and electromagnetic decay properties of scalar mesons above 1 GeV within a chiral approach. The scalar-isoscalar states are treated as mixed states of quarkonia…
Decays of Zb(+) and Zb'(+) as hadronic molecules
Yubing Dong, Amand Faessler, Thomas Gutsche +1
The two newly observed hidden-bottom mesons Zb(10610) and Zb'(10650) with quantum numbers J(P) = 1(+) are considered as hadronic molecules composed of BB(*) and B(*)B(*), respectiv…
Nuclear matter with a Bose condensate of dibaryons in relativistic Hartree approximation
Amand Faessler, A. J. Buchmann, M. I. Krivoruchenko
The Green's functions are constructed and a one-loop calculation is given for the scalar and vector densities and for the equation of state of nuclear matter with a Bose condensate…
Medium modifications of kaons in pion matter
B. V. Martemyanov, Amand Faessler, C. Fuchs +1
Kaon in-medium masses and mean-field potentials are calculated in isotopically symmetric pion matter to one loop of chiral perturbation theory. The results are extended to RHIC tem…
Pions in Nuclei and Manifestations of Supersymmetry in Neutrinoless Double Beta Decay
Amand Faessler, Sergey Kovalenko, Fedor Simkovic
We examine the pion realization of the short ranged supersymmetric (SUSY) mechanism of neutrinoless double beta decay. It originates from the R-parity violating quark-lepton intera…
Transition magnetic moments of Majorana neutrinos in supersymmetry without R-parity in light of neutrino oscillations
Marek Gozdz, Wieslaw A. Kaminski, Fedor Simkovic +1
The transition magnetic moments of Majorana neutrinos are calculated in grand unified theory (GUT) constrained Minimal Supersymmetric Standard Model (MSSM) with explicit R-parity v…
Some exact results for the particle number projected BCS approach of the isovector proton-neutron pairing
A. A. Raduta, M. I. Krivoruchenko, Amand Faessler
The mean values of a many-body Hamiltonian including a proton-neutron pairing term and matrix elements of one-, two- and four-body operators within a basis of particle number proje…
Radiative decay of Lambdac(2940)+ in a hadronic molecule picture
Yubing Dong, Amand Faessler, Thomas Gutsche +2
The Lambdac(2940)+ baryon with quantum numbers J(P) = 1/2(+) is considered as a molecular state composed of a nucleon and D* meson. We give predictions for the width of the radiati…
Hadronic and radiative three-body decays of J/psi involving the scalars f0(1370), f0(1500) and f0(1710)
Paulos Chatzis, Amand Faessler, Thomas Gutsche +1
We study the role of the scalar resonances f0(1370), f0(1500) and f0(1710) in the strong and radiative three-body decays of J/psi with J/psi to V + P P (gamma gamma) and J/psi to g…
Description of even-even triaxial Nuclei within the Coherent State and the Triaxial Rotation-Vibration Models
U. Meyer, A. A. Raduta, Amand Faessler
The coherent state model (CSM) and the triaxial rotation-vibration model (TRVM) are alternatively used to describe the ground, gamma and beta bands of 228Th. CSM is also applied to…
Scalar nonet quarkonia and the scalar glueball: mixing and decays in an effective chiral approach
F. Giacosa, Th. Gutsche, V. E. Lyubovitskij +1
Erroneous duplicate of hep-ph/0509247 removed by arXiv admin
The nuclear equation of state probed by K+ production in heavy ion collisions
C. Fuchs, Amand Faessler, S. El-Basaouny +3
The dependence of K+ production on the nuclear equation of state is investigated in heavy ion collisions. An increase of the excitation function of K+ multiplicities obtained in he…
Radiative decays of double heavy baryons in a relativistic constituent three-quark model including hyperfine mixing
Tanja Branz, Amand Faessler, Thomas Gutsche +4
We study flavor-conserving radiative decays of double heavy baryons using a manifestly Lorentz covariant constituent three-quark model. Decay rates are calculated and compared to e…
Constraints for weakly interacting light bosons from existence of massive neutron stars
M. I. Krivoruchenko, F. Simkovic, Amand Faessler
Theories beyond the standard model include a number of new particles some of which might be light and weakly coupled to ordinary matter. Such particles affect equation of state of…
Dominance of Pion-exchange in R-parity Violating Supersymmetry Contributions to Neutrinoless Double Beta Decay
Amand Faessler, Sergey Kovalenko, Fedor Simkovic +1
We present a new contribution of the R-parity violating supersymmetry (SUSY) to neutrinoless double beta decay via the pion exchange between decaying neutrons. The pion coupling to…
Neutron-Proton High-Energy Charge Exchange Scattering
Y. Yan, R. Tegen, T. Gutsche +2
The high energy proton-neutron charge exchange scattering reaction is studied in an effective hadron model for the energy range of s from 45.9 to 414.61 GeV*GeV. The main features…
The Relativistic Dirac-Brueckner Approach to Asymmetric Nuclear Matter
E. N. E. van Dalen, C. Fuchs, Amand Faessler
The properties of asymmetric nuclear matter have been investigated in a relativistic Dirac-Brueckner-Hartree-Fock framework using the Bonn A potential. The components of the self-e…
Can one measure nuclear matrix elements of neutrinoless double beta decay?
Vadim Rodin, Amand Faessler
By making use of the isospin conservation by strong interaction, the Fermi nuclear matrix element is transformed to acquire the form of an energy-weighted d…
Sensitivity of the nuclear equation of state towards relativistic effects
Rajeev K. Puri, E. Lehmann, Amand Faessler +1
We analyze relativistic effects in transverse momentum using Quantum Molecular Dynamics [QMD] and its covariant extension Relativistic Quantum Molecular Dynamics [RQMD]. The streng…
Non-collapsing renormalized QRPA with proton-neutron pairing for neutrinoless double beta decay
F. Simkovic, J. Schwieger, M. Veselsky +2
Using the renormalized quasiparticle random phase approximation (RQRPA), we calculate the light neutrino mass mediated mode of neutrinoless double beta decay of Ge76, Mo100, Te128…
New results for two-neutrino double beta decay with large particle-particle two body proton-neutron interaction
A. A. Raduta, O. Haug, F. Simkovic +1
A model many-body Hamiltonian describing an heterogenous system of paired protons and paired neutrons and interacting among themselves through monopole particle-hole and monopole p…
Can one determine the neutrino mass by electron capture?
Amand Faessler
There are three different methods used to search the neutrino mass: - The electron antineutrino mass can probably best be determined by the Triton decay. - The neutrinoless Double…
Electromagnetic couplings of the ChPT Lagrangian from the perturbative chiral quark model
V. E. Lyubovitskij, Th. Gutsche, Amand Faessler +1
We apply the perturbative chiral quark model to the study of the low-energy pi-N interaction. Using an effective chiral Lagrangian we reproduce the Weinberg-Tomozawa result for the…
Evaluation of the resonance enhancement effect in neutrinoless double-electron capture in 152Gd, 164Er and 180W atoms
Dong-Lianf Fang, K. Blaum, S. Eliseev +4
We study the resonant neutrinoless double-electron capture (0nECEC) in 152Gd, 164Er and 180W atoms, associated with the ground-state to ground-state nuclear transitions. The corres…
Quantization of gauge theory for gauge dependent operators
Xiang-Song Chen, Wei-Min Sun, Fan Wang +1
Based on a canonically derived path integral formalism, we demonstrate that the perturbative calculation of the matrix element for gauge dependent operators has crucial difference…
Quark model description of quasi-elastic pion knockout from the proton at JLAB
I. T. Obukhovsky, D. Fedorov, Amand Faessler +2
The interference term between s- and t-pole contributions to the p(e,e' pi+)n cross section is evaluated on the basis of the constituent quark model. It is shown that the contribut…
High-energy scissors mode
R. Nojarov, Amand Faessler, M. Dingfelder
All the orbital M1 excitations, at both low and high energies, obtained from a rotationally invariant QRPA, represent the fragmented scissors mode. The high-energy M1 strength is a…
Few active mechanisms of the neutrinoless double beta-decay and effective mass of Majorana neutrinos
Fedor Simkovic, John Vergados, Amand Faessler
It is well known that there exist many mechanisms that may contribute to neutrinoless double beta decay (0nbb-decay). By exploiting the fact that the associated nuclear matrix elem…
Direct Test of the Scalar-Vector Lorentz Structure of the Nucleon- and Antinucleon-Nucleus Potential
R. Hofmann, Amand Faessler, Th. Gutsche
Quantum Hadrodynamics in mean field approximation describes the effective nucleon-nucleus potential (about -50 MeV deep) as resulting from a strong repulsive vector (about 400 MeV)…
The Majorana neutrino masses, neutrinoless double beta decay and nuclear matrix elements
S. M. Bilenky, Amand Faessler, F. Simkovic
The effective Majorana neutrino mass is evaluated by using the latest results of neutrino oscillation experiments. The problems of the neutrino mass spectrum,absolute mass scale of…
Uncovering Multiple CP-Nonconserving Mechanisms of $\betabeta$-Decay
Amand Faessler, Aurora Meroni, Serguey T. Petcov +2
We consider the possibility of several different mechanisms contributing to the $\betabeta$-decay amplitude in the general case of CP nonconservation: light Majorana neutrino excha…
The d'-dibaryon in a colored cluster model
A. J. Buchmann, Georg Wagner, Amand Faessler
The mass and wave function of a six-quark system with quantum numbers J^P=0^-, T=0, called d', are calculated. We use a colored diquark-tetraquark cluster model for the six-quark w…
Study of non-equilibrium effects and thermal properties of heavy ion collisions using a covariant approach
Rajeev K. Puri, E. Lehmann, Amand Faessler +1
Non-equilibrium effects are studied using a full Lorentz-invariant formalism. Our analysis shows that in reactions considered here, no global or local equilibrium is reached. The h…
Description of double beta decay within continuum-QRPA
Vadim Rodin, Amand Faessler
A method to calculate the nuclear double beta decay (- and -) amplitudes within the continuum random phase approximation (cQRPA) is formulated. Calculations of th…
Decays of tensor mesons and the tensor glueball in an effective field approach
F. Giacosa, Th. Gutsche, V. E. Lyubovitskij +1
The strong and electromagnetic decays of the ground-state tensor mesons are studied in an effective field approach. A fit to the well-known experimental data is performed. The deca…
Partial restoration of isospin symmetry for neutrinoless double beta decay in the deformed nuclear system of Nd
Dong-Liang Fang, Amand Faessler, Fedor Simkovic
In this work, we calculate the matrix elements of -decay of Nd with the deformed pn-QRPA method. We adopted the approach introduced by Rodin, Faessler [Phys. Rev.…
Dilepton production in heavy ion collisions at intermediate energies
K. Shekhter, C. Fuchs, Amand Faessler +2
We present a unified description of the vector meson and dilepton production in elementary and in heavy ion reactions. The production of vector mesons () is described via th…
Anisotropic flow of strange particles at RHIC
E. Zabrodin, L. Bravina, G. Burau +3
Space-time picture of the anisotropic flow evolution in Au+Au collisions at BNL RHIC is studied for strange hadrons within the microscopic quark-gluon string model. The directed fl…
The -decay nuclear matrix element for light and heavy neutrino mass mechanisms from deformed QRPA cacluations for Ge, Se, Te, Xe and Nd with isospin restoration
Dong-Liang Fang, Amand Faessler, Fedor Å imkovic
In this work, with restored isospin symmetry, we evaluated the neutrinoless double beta decay nuclear matrix elements for Ge, Se, Te, Xe and N…
Pion dominance in RPV SUSY induced neutrinoless double beta decay
Amand Faessler, Thomas Gutsche, Sergey Kovalenko +1
At the quark level there are basically two types of contributions of R-parity violating SUSY (RPV SUSY) to neutrinoless double beta decay: the short-range contribution involving on…
Neutrinoless double beta decay of Nd with account for deformation
Dong-Liang Fang, Amand Faessler, Vadim Rodin +1
A microscopic state-of-the-art calculation of the nuclear matrix element for neutrinoless double beta decay of Nd with an account for nuclear deformation is performed. The…
State-by-state calculations for all channels of the exotic conversion process
T. S. Kosmas, Amand Faessler, F. Simkovic +1
The coherent and incoherent channels of the neutrinoless muon to electron conversion in nuclei, , are studied throughout the periodic table. The relevan…
Condensation of Dibaryons in Nuclear Matter and Its Possible Signatures in Heavy Ion Collisions
Amand Faessler, M. I. Krivoruchenko, B. V. Martemyanov
We consider the thermodynamics of the matter made up of equal number of neutrons and protons and of scalar dibaryons. They interact via the exchange of scalar and vector mesons. Th…
Gamow-Teller strength distributions in 76Ge and 76Se from deformed QRPA
P. Sarriguren, E. Moya de Guerra, L. Pacearescu +3
We study Gamow-Teller strength distributions of 76Ge and 76Se within a deformed QRPA formalism, which includes residual spin-isospin forces in the particle-hole and particle-partic…
Relativistic Effects in Heavy-Ion Collisions at SIS Energies
Rajeev K. Puri, E. Lehmann, Amand Faessler +1
The covariant and non-covariant Quantum Molecular Dynamics models are applied to investigate possible relativistic effects in heavy ion collisions at SIS energies. These relativist…
J/psi gamma and psi(2S) gamma decay modes of the X(3872)
Yubing Dong, Amand Faessler, Thomas Gutsche +1
The X(3872) with quantum numbers J(PC) = 1(++) is considered as a composite state containing both molecular hadronic and a c bar(c) component. Based on this structure assumption we…