Burkhard Kampfer
Dresden University of Technology
Particle physicsQuantum chromodynamicsPhysicsGluonQuasiparticleElectronBaryonPhotonNucleonAtomic physicsNuclear physicsHadronMesonQuark–gluon plasmaQCD sum rulesQuantum electrodynamicsLattice QCDPair productionLaserQuark
264Publications
28H-index
2,942Citations
Publications 219
#1Rico Zöllner (HZDR: Helmholtz-Zentrum Dresden-Rossendorf)H-Index: 4
#2Burkhard Kampfer (HZDR: Helmholtz-Zentrum Dresden-Rossendorf)H-Index: 28
The shrinking of the bottomonium spectral function towards narrow quasi-particle states in a cooling strong-interaction medium at finite baryon density is followed within a holographic bottom-up model. The 5-dimensional Einstein-dilaton-Maxwell background is adjusted to lattice-QCD results of sound velocity and susceptibilities. The zero-temperature bottomonium spectral function is adjusted to experimental \Upsilonground-state mass and first radial excitations. At baryo-chemical potential $\m... #1Halina Abramowicz (TAU: Tel Aviv University)H-Index: 193 #2U. Acosta (TUD: Dresden University of Technology)H-Index: 1 Last. O. BorysovH-Index: 3 view all 91 authors... This Conceptual Design Report describes LUXE (Laser Und XFEL Experiment), an experimental campaign that aims to combine the high-quality and high-energy electron beam of the European XFEL with a powerful laser to explore the uncharted terrain of quantum electrodynamics characterised by both high energy and high intensity. We will reach this hitherto inaccessible regime of quantum physics by analysing high-energy electron-photon and photon-photon interactions in the extreme environment provided b... #2Alexander I. TitovH-Index: 17 Last. Burkhard KampferH-Index: 28 view all 3 authors... The spectrally resolved differential cross section of Compton scattering, d \sigma / d \omega' \vert_{\omega' = const} rises from small towards larger laser intensity parameter \xi reaches a maximum, and falls towards the asymptotic strong-field region. Expressed by invariant quantities: d \sigma /du \vert_{u = const}rises from small towards larger values of \xi reaches a maximum at \xi_{max} = \frac49 {\cal K} u m^2 / k \cdot p {\cal K} = {\cal O} (1) and falls at$\xi > \xi_{...
#1Rico ZöllnerH-Index: 4
#2Burkhard KampferH-Index: 28
A holographic model of probe quarkonia is presented, where the dynamical gravity–dilaton background was adjusted to the thermodynamics of 2 + 1 flavor QCD with physical quark masses. The quarkonia action was modified to account for the systematic study of the heavy-quark mass dependence. We focused on the J/ψ and Υ spectral functions and related our model to heavy quarkonia formation as a special aspect of hadron phenomenology in heavy-ion collisions at LHC.
#2Alexander Belyaev (JINR: Joint Institute for Nuclear Research)H-Index: 193
Last. P. ZumbruchH-Index: 19
view all 130 authors...
A feasibility study has been performed in order to investigate the performance of the HADES detector to measure the electromagnetic decays of the hyperon resonances \Sigma(1385)^0 \Lambda(1405)and \Lambda{\Lambda}(1520)as well as the production of double strange baryon systems \Xi^-and \Lambda\Lambdain p+p reactions at a beam kinetic energy of 4.5 GeV. The existing HADES detector will be upgraded by a new Forward Detector, which extends the detector acceptance into a range of pola...
#1Rico ZöllnerH-Index: 4
#2Burkhard KampferH-Index: 28
A holographic model of probe vector mesons (quarkonia) is presented, where the dynamical gravity-dilaton background is adjusted to the thermodynamics of 2 +1 flavor QCD with physical quark masses. The vector meson action is modified to account for various quark masses. We focus on the \Phi J/\psiand \Upsilonmeson melting in agreement with hadron phenomenology in heavy-ion collisions at LHC, that is the formation of hadrons at the observed freeze-out temperature of 155 MeV.
#1Alexander I. TitovH-Index: 17
#2Burkhard Kampfer (TUD: Dresden University of Technology)H-Index: 28
We study the non-linear Breit–Wheeler process {\overrightarrow{\gamma }}^{\prime}+\vec{L}\to {e}^{+}+{e}^{-} in the interaction of linearly polarized probe photons ( {\overrightarrow{\gamma }}^{\prime}) with a linearly polarized laser beam ( \vec{L}). In particular, we consider the asymmetry of the total cross section and the azimuthal electron distributions when the polarizations of the photon and laser beams in the initial state are mutually perpendicular or parallel. Considering intense laser...
#1Piotr Salabura (Jagiellonian University)H-Index: 27
Last. L. Chlad (CAS: Academy of Sciences of the Czech Republic)H-Index: 10
view all 111 authors...
Radiative transition of an excited baryon to a nucleon with emission of a virtual massive photon converting to dielectron pair (Dalitz decays) provides important information about baryon-photon coupling at low q 2 in timelike region. A prominent enhancement in the respective electromagnetic transition Form Factors (etFF) at q 2 near vector mesons ρ/ω poles has been predicted by various calculations reflecting strong baryon-vector meson couplings. The understanding of these couplings is also of p...
#1L. P. Kaptari (HZDR: Helmholtz-Zentrum Dresden-Rossendorf)H-Index: 4
#2Burkhard Kampfer (TUD: Dresden University of Technology)H-Index: 28
We suggest a framework based on the rainbow approximation to the Dyson–Schwinger and Bethe–Salpeter equations with effective parameters adjusted to lattice QCD data to calculate the masses of the ground and excited states of pseudo-scalar glueballs. The structure of the truncated Bethe–Salpeter equation with the gluon and ghost propagators as solutions of the truncated Dyson–Schwinger equations is analyzed in Landau gauge. Both, the Bethe–Salpeter and Dyson–Schwinger equations, are solved numeri...
#2A. OttoH-Index: 8
Last. Alexander I. TitovH-Index: 17
view all 4 authors...