Dr
Biswarup Paul
(Universita e INFN Torino (IT))
22/01/2018, 17:00
Relativistic Heavy Ion Physics
Poster
The ALICE Collaboration has studied inclusive J/$\psi$ and $\psi$(2S) production in p-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 and 8.16 TeV. The measurements were performed at forward (2.03 $<$ $y_{\rm cms}$ $<$ 3.53), mid ($-$1.37 $<$ $y_{\rm cms}<$ 0.43) and backward ($-$4.46 $<$ $y_{\rm cms}$ $<$ $-$2.96) centre of mass rapidities. In this presentation, the nuclear modification factor of...
Mr
Stefan Lunkenheimer
(KPH)
22/01/2018, 17:03
Nuclear Structure and Astrophysics
Poster
MAGIX is a versatile fixed-target experiment and will be built on the new accelerator MESA (Mainz Energy-Recovering Superconducting Accelerator) in Mainz. The accelerator will deliver polarized electron beams with currents up to $1\,\mathrm{mA}$ and energy up to $105\,\mathrm{MeV}$. Using its internal gas-target, MAGIX will reach a luminosity of...
Efrain Segarra
(Massachusetts Institute of Technology)
22/01/2018, 17:06
Hadron Physics
Poster
The EMC effect, the phenomenon by which quark distributions are modified in bound nucleons, has defied explanation since its discovery over 30 years ago. Recently, there have been indications, experimentally and theoretically, that the EMC effect may be linked to high-momentum nucleons. Rather than the EMC effect being caused by a modest modification in all nucleons, it is possible that highly...
Mr
Klemens Lautenbach
(JLU Giessen)
22/01/2018, 17:09
Applications and Instrumentations
Poster
The future Belle II experiment will reach a total luminosity of $8\cdot 10^{35} cm^{−2} s^{−1}$. With such high luminosities, the innermost detector,
the Pixeldetector (PXD), will produce raw data rates of up to 20 GB/s.
In order to reduce these rates, a high bandwidth data aquisition and
data reduction system for the PXD is required. The so-called ONline
SElection Node (ONSEN)-system will...
Pascal Dillenseger
(for the ALICE Collaboration)
22/01/2018, 17:12
Relativistic Heavy Ion Physics
Poster
J/$\psi$ measurements in Pb$-$Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV clearly show a smaller suppression than the one expected from color screening, when compared to binary-scaled pp collisions.
The increased yield in Pb$-$Pb collisions can be explained by models that contain a (re)generation component, based on the (re)combination of c$\overline{\rm{c}}$-quarks. Hence, one of the...
Mr
Viacheslav Tsaran
(JGU Mainz)
22/01/2018, 17:15
Nuclear Structure and Astrophysics
Poster
The method of coherent $\pi^0$ photoproduction (
$\gamma$+ A${}_\text{g.s.}$ $\rightarrow$ $\pi^0$+ A${}_\text{g.s.}$, where A${}_\text{g.s.}$ is a nucleus in
its ground state) provides an efficient tool to study nucleon distribution and the neutron skin
of various nuclei. We investigate the case of nuclei with zero spin and isospin from the theoretical
point of view in the framework of a...
Mr
Dimitar Mihaylov
(TU Munich)
22/01/2018, 17:18
Hadron Physics
Poster
Femtoscopy is a method used to investigate particle correlations by using the experimentally accessible two-particle momentum correlation function C(k). This function can be mathematically obtained by integrating the product of the source function and the two-particle wave function. The main goals of femtoscopy are to investigate the properties of the emission source and the interaction...
Dr
Savvas Zafeiropoulos
(Universitaet Heidelberg)
22/01/2018, 17:21
Poster
Ioffe-time distributions, which are functions of the Ioffe-time $\nu$, are the Fourier
transforms of parton distribution functions with respect to the momentum fraction variable
$x$. These distributions can be obtained from appropriate equal time, quark bilinear
hadronic matrix elements which can be calculated from first principles via lattice QCD methods. Here, we present the first...
Mr
Moritz Greif
(Goethe University Frankfurt)
22/01/2018, 17:24
Relativistic Heavy Ion Physics
Poster
We calculate all diffusion constants of the conserved baryon, electric and strangeness charge in
hot relativistic multi-component systems using kinetic theory. Applying the algorithm for massive
pions, kaons, nucleons, lambda- and sigma-baryons, with resonance cross sections when possible, we
present for the first time realistic values for the hadronic diffusion coefficient matrix. These...
Mr
Lumkile Msebi
(University of Johannesburg)
22/01/2018, 17:27
Nuclear Structure and Astrophysics
Poster
Characteristic decay properties of radionuclides are essential in the study of nuclear spectroscopy. Lifetime measurements and transition moments for excited nuclear levels form part of this extensive study that seeks to unveil properties of nuclear structure. Scintillation detectors prove to be formidable in gamma ray detection and lifetime measurements. With advent of LaBr3...
Yvonne Stöttinger
(Universität Mainz)
22/01/2018, 17:30
Nuclear Structure and Astrophysics
Poster
The electromagnetic form factors of light nuclei provide a sensitive test of our understanding of nuclei. The deuteron in particular, as the only bound two-nucleon system, is a fundamental system that has received extensive attention in the past, by both theory and experiment. Because the deuteron has spin one, three form factors are needed to fully describe the electromagnetic structure of...
Ms
Julia Sammet
(Goethe University Frankfurt)
22/01/2018, 17:33
Hadron Physics
Poster
We calculate two- and three-body decays of the (lightest) vector glueball into
(pseudo)scalar, (axial-)vector, as well as pseudovector and excited vector
mesons in the framework of an effective model of QCD. While absolute values of widths cannot be predicted because the corresponding coupling constants are unknown, some interesting branching ratios can be evaluated by
setting the mass of...
Mr
Leonard Koch
(JLU Giessen)
22/01/2018, 17:36
Applications and Instrumentations
Poster
The BESIII experiment at the BEPCII electron positron collider at IHEP (Beijing) is collecting data in the charm-$\tau$ mass region. In electron positron collisions one of the initial leptons may emit a real photon before the annihilation (initial state radiation, ISR). As a result, the remaining system is boosted and has an effective center-of-mass energy lower than the nominal one...
Stephan Aulenbacher
(JGU Mainz)
22/01/2018, 17:39
Applications and Instrumentations
Poster
In the Year 2017 a new target has been installed @A1 in Mainz. This target is a Cluster-Jet-Target, which means that a hydrogen jet streams through the vacuum chamber, perpendicular to Mamis electron beam. By cooling down to gas temperatures of 40 K, the gas jet gets high densities in the core, due to the formation of clusters. The Jet-Target enables high precision measurements due to its...
Dr
Dagmar Adamova
(Nuclear Physics Institute AS CR)
22/01/2018, 17:42
Applications and Instrumentations
Poster
After the LHC community successfully completed Run 1, the capacity of the Worldwide LHC Computing Grid (WLCG) became the limiting factor in the processing of ever growing volumes of data produced from LHC collisions. During the last five years the LHC community launched a number of activities to increase computing performance and optimize usage of available resources. These activities are...
Dr
Savvas Zafeiropoulos
(Universitaet Heidelberg)
22/01/2018, 17:45
Poster
We study the Stephanov model, which is a Random Matrix Theory model for QCD at finite baryon
density, using the Complex Langevin algorithm. Naive implementation of the algorithm
shows convergence towards the phase quenched or quenched theory rather than to the intended
theory with dynamical quarks. A detailed analysis of this issue various potential
resolutions of the failure of this...
Dr
Bo Mei
(Extreme Light Infrastructure - Nuclear Physics (ELI-NP))
22/01/2018, 17:51
Nuclear Structure and Astrophysics
Poster
The investigation of very neutron-rich nuclei are of significant importance for nuclear physics and nuclear astrophysics. However, so far, only few neutron-rich nuclei near the stability have been measured, while most neutron-rich nuclei have not been experimentally studied due to their small production cross sections and short half-lives. Very brilliant and intense gamma beams planned at...
