A. Faessler - Profile on Academia.edu (original) (raw)
Papers by A. Faessler
Nuclear Physics A, 1987
The transition potential of pp to the hyperon-antihyperon (fi) system is calculated in the consti... more The transition potential of pp to the hyperon-antihyperon (fi) system is calculated in the constituent quark model with the 'PO model and with the %, model. The 3P0 model allows the tensor coupling between the pp and YY states while the 'S, model restricts that the pp and YP have the same orbital angular momentum.
The European Physical Journal C, 2000
From the hypothesis that at zero temperature the square root of the spectral continuum threshold ... more From the hypothesis that at zero temperature the square root of the spectral continuum threshold s0 is linearly related to the QCD scale Λ we derive in the chiral limit and for temperatures considerably smaller than Λ scaling relations for the vacuum parts of the Gibbs averaged scalar operators contributing to the thermal operator product expansion of the ρ 0 current-current correlator. The scaling with λ ≡ s0(T )/s0(0), s0 being the T -dependent perturbative QCD continuum threshold in the spectral integral, is simple for renormalization group invariant operators, and becomes nontrivial for a set of operators which mix and scale anomalously under a change of the renormalization point. In contrast to previous works on thermal QCD sum rules with this approach the gluon condensate exhibits a sizable T -dependence. The ρ -meson mass is found to rise slowly with temperature which coincides with the result found by means of a PCAC and current algebra analysis of the ρ 0 correlator.
Collective transitions in nuclei with 'rotations' around the symmetry axis
Journal of Physics G: Nuclear Physics, 1981
... We have studied the collective enhancement of the single-particle transitions in MONA nuclei.... more ... We have studied the collective enhancement of the single-particle transitions in MONA nuclei. ... Here IPBCS, B) is the projection of the reference states 11,) (see equations (Al) and (2.3)) and ... Aguer P, Bastin A, Charmant A, El Masri Y, Hubert P, Janssens R, Michel C, Thibaud JP ...
The fission barrier of actinide nuclei at very high angular momentum
ABSTRACT
Structure of the giant resonances in 16O using brueckner-random-phase approximation
ABSTRACT
Complex MONSTER: A new model for large scale nuclear structure studies
Variational approach to 68 Se
Thermal properties and medium effects in the study of heavy-ion collisions with realistic NN interactions
VI-Ae Fragmentation of the Electric Multipole Strength in 208Pb
On the probability of isobar configurations in the deuteron
The Λ (1236) probability in nuclear many-body systems
Non-iterative 2π-exchange terms in the nucleon-nucleon interaction
Addendum to: QRPA uncertainties and their correlations in the analysis of neutrinoless double beta decay
ABSTRACT In a previous article [Phys. Rev. D 79, 053001 (2009)] we estimated the correlated uncer... more ABSTRACT In a previous article [Phys. Rev. D 79, 053001 (2009)] we estimated the correlated uncertainties associated to the nuclear matrix elements (NME) of neutrinoless double beta decay (0 nu beta beta) within the quasiparticle random phase approximation (QRPA). Such estimates encompass recent independent calculations of NMEs, and can thus still provide a fair representation of the nuclear model uncertainties. In this context, we compare the claim of 0 nu beta beta decay in Ge-76 with recent negative results in Xe-136 and in other nuclei, and we infer the lifetime ranges allowed or excluded at 90% C.L. We also highlight some issues that should be addressed in order to properly compare and combine results coming from different 0 nu beta beta decay candidate nuclei.
Landau parameters derived from realistic interactions
Comparison of microscopic calculations of spin-isospin correlations in nuclear matter and finite nuclei
Three-body forces from the intermediate Nsup (*)(1470) state
PiN scattering and electromagnetic corrections in the perturbative chiral quark model
Arxiv preprint hep-ph/ …, 2001
Abstract: We apply the perturbative chiral quark model to give predictions for the electromagneti... more Abstract: We apply the perturbative chiral quark model to give predictions for the electromagnetic O (p^ 2) low-energy couplings of the ChPT effective Lagrangian that define the electromagnetic mass shifts of nucleons and first-order (e^ 2) radiative corrections to ...
Effect of deformation on two-neutrino double beta decay matrix elements
Progress in Particle and Nuclear Physics, 2006
E2 contributions to backward (e,e′) cross sections in heavy deformed nuclei
Progress in Particle and Nuclear Physics, 1995
Are the low-lying isovector 1+ states scissors vibrations?
Progress in Particle and Nuclear Physics, 1992
Nuclear Physics A, 1987
The transition potential of pp to the hyperon-antihyperon (fi) system is calculated in the consti... more The transition potential of pp to the hyperon-antihyperon (fi) system is calculated in the constituent quark model with the 'PO model and with the %, model. The 3P0 model allows the tensor coupling between the pp and YY states while the 'S, model restricts that the pp and YP have the same orbital angular momentum.
The European Physical Journal C, 2000
From the hypothesis that at zero temperature the square root of the spectral continuum threshold ... more From the hypothesis that at zero temperature the square root of the spectral continuum threshold s0 is linearly related to the QCD scale Λ we derive in the chiral limit and for temperatures considerably smaller than Λ scaling relations for the vacuum parts of the Gibbs averaged scalar operators contributing to the thermal operator product expansion of the ρ 0 current-current correlator. The scaling with λ ≡ s0(T )/s0(0), s0 being the T -dependent perturbative QCD continuum threshold in the spectral integral, is simple for renormalization group invariant operators, and becomes nontrivial for a set of operators which mix and scale anomalously under a change of the renormalization point. In contrast to previous works on thermal QCD sum rules with this approach the gluon condensate exhibits a sizable T -dependence. The ρ -meson mass is found to rise slowly with temperature which coincides with the result found by means of a PCAC and current algebra analysis of the ρ 0 correlator.
Collective transitions in nuclei with 'rotations' around the symmetry axis
Journal of Physics G: Nuclear Physics, 1981
... We have studied the collective enhancement of the single-particle transitions in MONA nuclei.... more ... We have studied the collective enhancement of the single-particle transitions in MONA nuclei. ... Here IPBCS, B) is the projection of the reference states 11,) (see equations (Al) and (2.3)) and ... Aguer P, Bastin A, Charmant A, El Masri Y, Hubert P, Janssens R, Michel C, Thibaud JP ...
The fission barrier of actinide nuclei at very high angular momentum
ABSTRACT
Structure of the giant resonances in 16O using brueckner-random-phase approximation
ABSTRACT
Complex MONSTER: A new model for large scale nuclear structure studies
Variational approach to 68 Se
Thermal properties and medium effects in the study of heavy-ion collisions with realistic NN interactions
VI-Ae Fragmentation of the Electric Multipole Strength in 208Pb
On the probability of isobar configurations in the deuteron
The Λ (1236) probability in nuclear many-body systems
Non-iterative 2π-exchange terms in the nucleon-nucleon interaction
Addendum to: QRPA uncertainties and their correlations in the analysis of neutrinoless double beta decay
ABSTRACT In a previous article [Phys. Rev. D 79, 053001 (2009)] we estimated the correlated uncer... more ABSTRACT In a previous article [Phys. Rev. D 79, 053001 (2009)] we estimated the correlated uncertainties associated to the nuclear matrix elements (NME) of neutrinoless double beta decay (0 nu beta beta) within the quasiparticle random phase approximation (QRPA). Such estimates encompass recent independent calculations of NMEs, and can thus still provide a fair representation of the nuclear model uncertainties. In this context, we compare the claim of 0 nu beta beta decay in Ge-76 with recent negative results in Xe-136 and in other nuclei, and we infer the lifetime ranges allowed or excluded at 90% C.L. We also highlight some issues that should be addressed in order to properly compare and combine results coming from different 0 nu beta beta decay candidate nuclei.
Landau parameters derived from realistic interactions
Comparison of microscopic calculations of spin-isospin correlations in nuclear matter and finite nuclei
Three-body forces from the intermediate Nsup (*)(1470) state
PiN scattering and electromagnetic corrections in the perturbative chiral quark model
Arxiv preprint hep-ph/ …, 2001
Abstract: We apply the perturbative chiral quark model to give predictions for the electromagneti... more Abstract: We apply the perturbative chiral quark model to give predictions for the electromagnetic O (p^ 2) low-energy couplings of the ChPT effective Lagrangian that define the electromagnetic mass shifts of nucleons and first-order (e^ 2) radiative corrections to ...
Effect of deformation on two-neutrino double beta decay matrix elements
Progress in Particle and Nuclear Physics, 2006
E2 contributions to backward (e,e′) cross sections in heavy deformed nuclei
Progress in Particle and Nuclear Physics, 1995
Are the low-lying isovector 1+ states scissors vibrations?
Progress in Particle and Nuclear Physics, 1992