Publications (45)
High-statistics measurement of Collins and Sivers asymmetries for transversely polarised deuterons
G. D. Alexeev, M. G. Alexeev, C. Alice +183
New results are presented on a high-statistics measurement of Collins and Sivers asymmetries of charged hadrons produced in deep inelastic scattering of muons on a transversely pol…
Spectral properties and geology of bright and dark material on dwarf planet Ceres
G. Thangjam, A. Nathues, T. Platz +5
Variations and spatial distributions of bright and dark material on dwarf planet Ceres play a key role in understanding the processes that have led to its present surface compositi…
Collins and Sivers transverse-spin asymmetries in inclusive muoproduction of mesons
G. D. Alexeev, M. G. Alexeev, C. Alice +188
The production of vector mesons in deep inelastic scattering is an interesting yet scarsely explored channel to study the transverse spin structure of the nucleon and the related p…
First Observation of an Exotic Reggeon
G. D. Alexeev, M. G. Alexeev, C. Alice +180
We present new \compass high-statistics measurements of the peripheral production of and pairs in the reactions . For the…
Photoinduced suppression of the ferroelectric instability in PbTe
M. P. Jiang, M. Trigo, S. Fahy +18
The interactions between electrons and phonons drive a large array of technologically relevant material properties including ferroelectricity, thermoelectricity, and phase-change b…
Role of correlated two-pion exchange in scattering
M. Hoffmann, J. W. Durso, K. Holinde +2
A dynamical model for S-- and P--wave correlated (and ) exchange between a kaon and a nucleon is presented, starting from corresponding $N \bar N \rightarrow K \ba…
Double production in pion-nucleon scattering at COMPASS
G. D. Alexeev, M. G. Alexeev, A. Amoroso +191
We present the study of the production of double mesons using COMPASS data collected with a 190 GeV/ beam scattering off NH, Al and W targets. Kinematic dist…
Measurement of the hard exclusive muoproduction cross section at COMPASS
G. D. Alexeev, M. G. Alexeev, C. Alice +169
A new and detailed measurement of the cross section for hard exclusive neutral-pion muoproduction on the proton was performed in a wide kinematic region, with the photon virtuality…
Spin Density Matrix Elements in Exclusive Meson Muoproduction
G. D. Alexeev, M. G. Alexeev, C. Alice +186
We report on a measurement of Spin Density Matrix Elements (SDMEs) in hard exclusive meson muoproduction at COMPASS using 160~GeV/ polarised and beams…
The exotic meson with and its decay into
M. G. Alexeev, G. D. Alexeev, A. Amoroso +192
We study the spin-exotic amplitude in single-diffractive dissociation of 190 GeV pions into using a hydrogen target and confirm the $Ï_1(1600)…
Blockwise SVD with error in the operator and application to blind deconvolution
S. Delattre, M. Hoffmann, D. Picard +1
We consider linear inverse problems in a nonparametric statistical framework. Both the signal and the operator are unknown and subject to error measurements. We establish minimax r…
Letter of Intent for the LUXE Experiment
H. Abramowicz, M. Altarelli, R. AÃmann +34
This Letter of Intent describes LUXE (Laser Und XFEL Experiment), an experiment that aims to use the high-quality and high-energy electron beam of the European XFEL and a powerful…
Test Beam Performance Measurements for the Phase I Upgrade of the CMS Pixel Detector
M. Dragicevic, M. Friedl, J. Hrubec +481
A new pixel detector for the CMS experiment was built in order to cope with the instantaneous luminosities anticipated for the Phase~I Upgrade of the LHC. The new CMS pixel detecto…
Magnetic phase diagram, magnetoelastic coupling and Grüneisen scaling in CoTiO
M. Hoffmann, K. Dey, J. Werner +7
High-quality single crystals of CoTiO are grown and used to elucidate in detail structural and magnetostructural effects by means of high-resolution capacitance dilatometry stu…
Spectroscopy of Strange Mesons and First Observation of a Strange Crypto-Exotic State with
G. D. Alexeev, M. G. Alexeev, C. Alice +160
We measured the strange-meson spectrum in the scattering reaction with the COMPASS spectrometer at CERN. Using the world's largest sample…
Final COMPASS results on the transverse-spin-dependent azimuthal asymmetries in the pion-induced Drell-Yan process
G. D. Alexeev, M. G. Alexeev, C. Alice +180
The COMPASS Collaboration performed measurements of the Drell-Yan process in 2015 and 2018 using a 190 GeV/c beam impinging on a transversely polarised ammonia target. Com…
Trapping in irradiated p-on-n silicon sensors at fluences anticipated at the HL-LHC outer tracker
W. Adam, T. Bergauer, M. Dragicevic +682
The degradation of signal in silicon sensors is studied under conditions expected at the CERN High-Luminosity LHC. 200 m thick n-type silicon sensors are irradiated with proton…
Multiplicities of positive and negative pions, kaons and unidentified hadrons from deep-inelastic scattering of muons off a liquid hydrogen target
G. D. Alexeev, M. G. Alexeev, C. Alice +166
The multiplicities of positive and negative pions, kaons and unidentified hadrons produced in deep-inelastic scattering are measured in bins of the Bjorken scaling variable , th…
Modeling microstructure noise with mutually exciting point processes
E. Bacry, S. Delattre, M. Hoffmann +1
We introduce a new stochastic model for the variations of asset prices at the tick-by-tick level in dimension 1 (for a single asset) and 2 (for a pair of assets). The construction…
Toward safe separation distance monitoring from RGB-D sensors in human-robot interaction
P. Svarny, Z. Straka, M. Hoffmann
The interaction of humans and robots in less constrained environments gains a lot of attention lately and the safety of such interaction is of utmost importance. Two ways of risk a…
Coupling of Rotational Motion with Shape Fluctuations of Core-shell Microgels Having Tunable Softness
S. Bolisetty, M. Hoffmann, S. Lekkala +3
The influence of shape fluctuations on deformable thermosensitive microgels in aqueous solution is investigated by dynamic light scattering (DLS) and depolarized dynamic light scat…
Observation of the rare decay from the combined analysis of CMS and LHCb data
The CMS, LHCb Collaborations, : +2807
A joint measurement is presented of the branching fractions and in proton-proton collisions at the LHC by the CMS and LHCb experiments. The data…
Input to the ESPPU: The LUXE Experiment
H. Abramowicz, M. Almanza Soto, M. Altarelli +130
This document presents an overview of LUXE (Laser Und XFEL Experiment), an experiment that will combine the high-quality and high-energy electron beam of the European XFEL with a h…
Technical Design Report for the LUXE Experiment
H. Abramowicz, M. Almanza Soto, M. Altarelli +131
This Technical Design Report presents a detailed description of all aspects of the LUXE (Laser Und XFEL Experiment), an experiment that will combine the high-quality and high-energ…
A quantum heat engine based on dynamical materials design
G. Tulzer, M. Hoffmann, R. E. Zillich
We propose a novel type of quantum heat engine based on the ultrafast dynamical control of the magnetic properties of a nano-scale working body. The working principle relies on non…
Ultrafast modification of the electronic structure of a correlated insulator
O. Grånäs I. Vaskivskyi, X. Wang, P. Thunström +25
A non-trivial balance between Coulomb repulsion and kinematic effects determines the electronic structure of correlated electron materials. The use electromagnetic fields strong en…
Estimation of the lead-lag parameter from non-synchronous data
M. Hoffmann, M. Rosenbaum, N. Yoshida
We propose a simple continuous time model for modeling the lead-lag effect between two financial assets. A two-dimensional process reproduces a lead-lag effect if, for…
Mn-rich MnSb2Te4: A topological insulator with magnetic gap closing at high Curie temperatures of 45-50 K
S. Wimmer, J. Sánchez-Barriga, P. Küppers +18
Ferromagnetic topological insulators exhibit the quantum anomalous Hall effect that might be used for high precision metrology and edge channel spintronics. In conjunction with sup…
The reactions and at threshold: The role of the isoscalar scattering amplitude
C. Hanhart, J. Haidenbauer, M. Hoffmann +2
We examine the role of the elementary isoscalar pion--nucleon scattering amplitude in the description of the processes and at threshold. We argue that…
Study of electronic and magnetic properties and related x-ray absorption spectroscopy of ultrathin Co films on BaTiO
M. Hoffmann, St. Borek, I. V. Maznichenko +7
We present a first-principles study of electronic and magnetic properties of thin Co films on a BaTiO(001) single crystal. The crystalline structure of 1, 2, and 3 monolayer th…
Simultaneous whole-animal 3D-imaging of neuronal activity using light field microscopy
R. Prevedel, Y. -G. Yoon, M. Hoffmann +8
3D functional imaging of neuronal activity in entire organisms at single cell level and physiologically relevant time scales faces major obstacles due to trade-offs between the siz…
Preserving orbital order in a layered manganite by ultrafast hybridized band excitation
L. Shen, S. Mack, G. Dakovski +19
In the mixed-valence manganites, a near-infrared laser typically melts the orbital and spin order simultaneously, corresponding to the photoinduced $d…
Magnetostriction and magnetostructural domains in CoTiO
K. Dey, M. Hoffmann, R. Klingeler
We report the magnetostrictive length changes of CoTiO studied by means of high-resolution dilatometry in magnetic fields () up to 15~T. In the long-range antiferromagnetica…
The Spatial Variation of the Cooling Lines in the Reflection Nebula NGC7023
J. Bernard-Salas, E. Habart, M. Köhler +7
Context: The north-west photo-dissociation region (PDR) in the reflection nebula NGC 7023 displays a complex structure. Filament-like condensations at the edge of the cloud can be…
Topological magnetic materials of the (MnSbTe)(SbTe) van der Waals compounds family
S. V. Eremeev, I. P. Rusinov, Yu. M. Koroteev +6
Combining robust magnetism, strong spin-orbit coupling and unique thickness-dependent properties of van der Waals crystals could enable new spintronics applications. Here, using de…
Fluctuation driven height reduction of crosslinked polymer brushes
M. Lang, M. Hoffmann, M. Werner +2
We study the changes in the conformations of brushes upon the addition of crosslinks between the chains using the bond fluctuation model. The Flory-Rehner model applied to uni-axia…
Strain induced superconductivity in the parent compound BaFe2As2
J. Engelmann, V. Grinenko, P. Chekhonin +10
The discovery of superconductivity (SC) with a transition temperature, Tc, up to 65K in single-layer FeSe (bulk Tc =8K) films grown on SrTiO3 substrates has attracted special atten…
Variety of magnetic topological phases in the (MnBiTe)(BiTe) family
I. I. Klimovskikh, M. M. Otrokov, D. Estyunin +23
Quantum states of matter combining non-trivial topology and magnetism attract a lot of attention nowadays; the special focus is on magnetic topological insulators (MTIs) featuring…
Haze at Occator crater on dwarf planet Ceres
G. Thangjam, M. Hoffmann, A. Nathues +2
A diurnal varying haze layer at the bright spots of Occator on dwarf planet Ceres has been reported from images of the Dawn Framing Camera. This finding is supported by ground-base…
Dihadron Transverse-Spin Asymmetries in Muon-Deuteron Deep-Inelastic Scattering
G. D. Alexeev, M. G. Alexeev, C. Alice +168
In 2022, the COMPASS collaboration performed semi-inclusive measurements of deep-inelastic muon-scattering on a transversely polarised deuteron (6LiD) target. From these data, tran…
Exchange interaction and its tuning in magnetic binary chalcogenides
M. G. Vergniory, D. Thonig, M. Hoffmann +11
Using a first-principles Green's function approach we study magnetic properties of the magnetic binary chalcogenides Bi2Te3, Bi2Se3, and Sb2Te3. The magnetic coupling between trans…
Ab initio analysis of magnetic properties of prototype B20 chiral magnet FeGe
S. Grytsiuk, M. Hoffmann, J. -P. Hanke +4
FeGe in the B20 phase is an experimentally well-studied prototypical chiral magnet exhibiting helical spirals, skyrmion lattices and individual skyrmions with a robust length of 70…
Update on the LLRF operations status at the European XFEL
M. Diomede, V. Ayvazyan, J. Branlard +7
The European XFEL (EuXFEL) is a free-electron laser in the X-ray range for users. Its high availability is one of the key aspects of the machine. In 2022, it entered in the sixth y…
Novel type of atomic-scale spin lattice at a surface and its emergent Hall effect
M. Hoffmann, J. Weischenberg, B. Dupe +4
We predict the occurrence of a novel type of atomic-scale spin lattice in an Fe monolayer on the Ir(001) surface. Based on density functional theory calculations we parametrize a s…
Study of the Negative Magneto-Resistance of Single Proton-Implanted Lithium-Doped ZnO Microwires
I. Lorite, C. Zandalazini, P. Esquinazi +14
The magneto-transport properties of single proton-implanted ZnO and of Li(7\%)-doped ZnO microwires have been studied. The as-grown microwires were highly insulating and not magnet…