20190320 08:43 
[PUBDB201901624]
Journal Article
Kaur, R. ; Welsch, R.
Probing photodissociation dynamics using ring polymer molecular dynamics
The performance of the ring polymer molecular dynamics (RPMD) approach to simulate typical photodissociation processes is assessed. The correct description of photodissociation requires the calculation of correlation functions or expectation values associated with nonequilibrium initial conditions, which was shown to be possible with RPMD very recently [J. [...]
Published on 20190318. Available in OpenAccess from 20200318.: PDF PDF (PDFA);
ddc:530
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20190319 15:00 
[PUBDB201901623]
Journal Article
Euchler, E. ; Schneider, K. ; Heinrich, G. ; et al
Exploring the failure behavior of rubber vulcanizates subjected to constraint tensile strain via Xray experiments
External link: Fulltext
ddc:670
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20190319 11:12 
[PUBDB201901605]
Report/Journal Article
Babounikau, I. ; Osland, P. ; Pankov, A. A.
Improved constraints on the mixing and mass of $Z'$ bosons from resonant diboson searches at the LHC at $\sqrt{s}=13$ TeV and predictions for Run II
[DESY18170; arXiv:1809.08933]
New neutral vector bosons Z′ decaying to charged gauge boson pairs W$^+$W$^$ are predicted in many scenarios of new physics, including models with an extended gauge sector such as E6, leftright symmetric ZLRS′ and the sequential standard model ZSSM′. For these benchmark models we calculate and present theoretical expectations for different values of the Z′ mass M2 and mixing parameter ξ. [...]
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ddc:530
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20190319 10:24 
[PUBDB201901603]
Journal Article
Hanna, A. M. ; Vendrell, O. ; Santra, R.
Timeresolved xray/optical pumpprobe simulations on $\mathrm{N_2}$ molecules
The dynamics of $N_2^{2+}$ dications after xrayinduced Auger decay and their probing with a delayed infrared probe pulse are theoretically investigated based on a quantummechanical model including all relevant electronic states for which wavepacket calculations on abinitio potential energy curves are performed. Our results demonstrate that the $N_2^{2+}$ yield modulated by the delay of the probe pulse contains dynamical information on the wavepacket evolution in the quasibound final electronic states [...]
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ddc:500
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20190318 11:32 
[PUBDB201901570]
Report/Journal Article
Phan, K. H. ; Riemann, T.
Scalar 1loop Feynman integrals as meromorphic functions in spacetime dimension d
[DESY 17079, HCMUS1901, KW 18004, arXiv:1812.10975]
The longstanding problem of representing the general massive oneloop Feynman integral as a meromorphic function of the spacetime dimension d has been solved for the basis of scalar one to fourpoint functions with indices one. In 2003 the solution of difference equations in the spacetime dimension allowed to determine the necessary classes of special functions: selfenergies need ordinary logarithms and Gauss hypergeometric functions $_{2}F_1$, vertices need additionally Kampé de FérietAppell functions $F_1$, and box integrals also LauricellaSaran functions $F_S$ [...]
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20190315 11:37 
[PUBDB201901557]
Journal Article
Janssens, K. ; Legrand, S. ; Van der Snickt, G. ; et al
Virtual Archaeology of Altered Paintings: Multiscale Chemical Imaging Tools
Understanding how painted works of art were constructed, layerbylayer, requires a range of macroscopic and microscopic Xray and infraredbased analytical methods. Deconstructing complex assemblies of paints horizontally across a picture and vertically through it provides insight into the detailed production process of the art work and on the painting techniques and styles of its maker. [...]
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ddc:550
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20190314 13:47 
[PUBDB201901539]
Report/Journal Article
Kramer, G. ; Spiesberger, H.
$\Lambda_b^0$baryon production in pp collisions in the generalmass variableflavournumber scheme and comparison with CMS and LHCb data
[DESY18036; arXiv:1803.11103; MITP18020]
We calculate the nexttoleadingorder cross section for the inclusive production of $\Lambda_b$ baryons in pp collisions in the generalmass variableflavornumber scheme. We use realistic evolved nonperturbative fragmentation functions obtained from fits to Bmeson production in $e^+ e^$ annihilation and compare our results for transversemomentum and rapidity distributions with recent experimental data from the CMS and the LHCb collaborations at the CERN LHC. [...]
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20190314 11:38 
[PUBDB201901537]
Report/Journal Article
Blümlein, J. ; De Freitas, A. ; Raab, C. G. ; et al
The $O(\alpha^2)$ Initial State QED Corrections to $e^+e^$ Annihilation to a Neutral Vector Boson Revisited
[arXiv:1901.08018; DESY18226; DOTH1830]
We calculate the nonsinglet, the pure singlet contribution, and their interference term, at $O(\alpha^2)$ due to electronpair initial state radiation to $e^+ e^$ annihilation into a neutral vector boson in a direct analytic computation without any approximation. The correction is represented in terms of iterated incomplete elliptic integrals. [...]
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20190314 11:25 
[PUBDB201901536]
Journal Article
Aartsen, M. G. ; Ackermann, M. ; Adams, J. ; et al
Measurement of atmospheric tau neutrino appearance with IceCube DeepCore
We present a measurement of atmospheric tau neutrino appearance from oscillations with three years of data from the DeepCore subarray of the IceCube Neutrino Observatory. This analysis uses atmospheric neutrinos from the full sky with reconstructed energies between 5.6 and 56 GeV to search for a statistical excess of cascadelike neutrino events which are the signature of $ν_τ$ interactions [...]
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ddc:530
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20190314 11:06 
[PUBDB201901535]
Journal Article
Nishikawa, K.I. ; Mizuno, Y. ; Gómez, J. ; et al
Relativistic Jet Simulations of the Weibel Instability in the Slab Model to Cylindrical Jets with Helical Magnetic Fields
The particleincell (PIC) method was developed to investigate microscopic phenomena, and with the advances in computing power, newly developed codes have been used for several fields, such as astrophysical, magnetospheric, and solar plasmas. PIC applications have grown extensively, with large computing powers available on supercomputers such as Pleiades and Blue Waters in the US. [...]
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