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Excited cosmic strings with superconducting currents (2017)
Journal Article
Hartmann, B., Michel, F., & Peter, P. (2017). Excited cosmic strings with superconducting currents. Physical Review D, 96(12), Article 123531. https://doi.org/10.1103/physrevd.96.123531

We present a detailed analysis of excited cosmic string solutions that possess superconducting currents. These currents can be excited inside the string core, and—if the condensate is large enough—can lead to the excitations of the Higgs field. Next... Read More about Excited cosmic strings with superconducting currents.

Improving the simulation of quark and gluon jets with Herwig 7 (2017)
Journal Article
Reichelt, D., Richardson, P., & Siodmok, A. (2017). Improving the simulation of quark and gluon jets with Herwig 7. The European Physical Journal C, 77(12), Article 876. https://doi.org/10.1140/epjc/s10052-017-5374-8

The properties of quark and gluon jets, and the differences between them, are increasingly important at the LHC. However, Monte Carlo event generators are normally tuned to data from e+e−e+e− collisions which are primarily sensitive to quark-initiate... Read More about Improving the simulation of quark and gluon jets with Herwig 7.

Gauge leptoquark as the origin of B-physics anomalies (2017)
Journal Article
Di Luzio, L., Greljo, A., & Nardecchia, M. (2017). Gauge leptoquark as the origin of B-physics anomalies. Physical Review D, 96(11), Article 115011. https://doi.org/10.1103/physrevd.96.115011

The vector leptoquark representation, Uμ ¼ ð3; 1; 2=3Þ, was recently identified as an exceptional single mediator model to address experimental hints on lepton flavor universality violation in semileptonic B-meson decays, both in neutral (b → sμμ) an... Read More about Gauge leptoquark as the origin of B-physics anomalies.

Dimension-six matrix elements for meson mixing and lifetimes from sum rules (2017)
Journal Article
Kirk, M., Lenz, A., & Rauh, T. (2017). Dimension-six matrix elements for meson mixing and lifetimes from sum rules. Journal of High Energy Physics, 2017(12), Article 68. https://doi.org/10.1007/jhep12%282017%29068

The hadronic matrix elements of dimension-six ∆F = 0, 2 operators are crucial inputs for the theory predictions of mixing observables and lifetime ratios in the B and D system. We determine them using HQET sum rules for three-point correlators. The r... Read More about Dimension-six matrix elements for meson mixing and lifetimes from sum rules.

Exceptional N=3 theories (2017)
Journal Article
García-Etxebarria, I., & Regalado, D. (2017). Exceptional N=3 theories. Journal of High Energy Physics, 12, Article 042. https://doi.org/10.1007/jhep12%282017%29042

We present a new construction of four dimensional N = 3 theories, given by M5 branes wrapping a T 2 in an M-theory U-fold background. The resulting setup generalizes the one used in the usual class S construction of four dimensional theories by using... Read More about Exceptional N=3 theories.

Diffusion in inhomogeneous media (2017)
Journal Article
Donos, A., Gauntlett, J. P., & Ziogas, V. (2017). Diffusion in inhomogeneous media. Physical Review D, 96(12), Article 125003. https://doi.org/10.1103/physrevd.96.125003

We consider the transport of conserved charges in spatially inhomogeneous quantum systems with a discrete lattice symmetry. We analyze the retarded two-point functions involving the charges and the associated currents at long wavelengths, compared to... Read More about Diffusion in inhomogeneous media.

Electroweak Higgs production with HiggsPO at NLO QCD (2017)
Journal Article
Greljo, A., Isidori, G., Lindert, J. M., Marzocca, D., & Zhang, H. (2017). Electroweak Higgs production with HiggsPO at NLO QCD. The European Physical Journal C, 77(12), Article 838. https://doi.org/10.1140/epjc/s10052-017-5422-4

We present the HiggsPO UFO model for Monte Carlo event generation of electroweak VH and VBF Higgs production processes at NLO in QCD in the formalism of Higgs pseudo-observables (PO). We illustrate the use of this tool by studying the QCD corrections... Read More about Electroweak Higgs production with HiggsPO at NLO QCD.

Classification of compactified su(Nc) gauge theories with fermions in all representations (2017)
Journal Article
Anber, M. M., & Vincent-Genod, L. (2017). Classification of compactified su(Nc) gauge theories with fermions in all representations. Journal of High Energy Physics, 2017(12), Article 028. https://doi.org/10.1007/jhep12%282017%29028

We classify su(N c ) gauge theories on R3×S1 with massless fermions in higher representations obeying periodic boundary conditions along S1. In particular, we single out the class of theories that is asymptotically free and weakly coupled in the infr... Read More about Classification of compactified su(Nc) gauge theories with fermions in all representations.

Precise predictions for V+jets dark matter backgrounds (2017)
Journal Article
Lindert, J., Pozzorini, S., Boughezal, R., Campbell, J., Denner, A., Dittmaier, S., …Williams, C. (2017). Precise predictions for V+jets dark matter backgrounds. The European Physical Journal C, 77(12), Article 829. https://doi.org/10.1140/epjc/s10052-017-5389-1

High-energy jets recoiling against missing transverse energy (MET) are powerful probes of dark matter at the LHC. Searches based on large MET signatures require a precise control of the Z(νν¯)+Z(νν¯)+ jet background in the signal region. This can be... Read More about Precise predictions for V+jets dark matter backgrounds.

Off-shell ttj Production and Top-quark Mass Studies at the LHC (2017)
Journal Article
Bevilacqua, G., Hartanto, H., Kraus, M., Schulze, M., & Worek, M. (2017). Off-shell ttj Production and Top-quark Mass Studies at the LHC. Acta Physica Polonica B, 48(12), 2251-2260. https://doi.org/10.5506/aphyspolb.48.2251

Precision studies of the properties of the top quark represent a cornerstone of the LHC physics program. In this contribution, we focus on the production of tt pairs in association with one hard jet and, in particular, on its connection with precisio... Read More about Off-shell ttj Production and Top-quark Mass Studies at the LHC.

The Five-loop Beta Function for a General Gauge Group (2017)
Journal Article
Luthe, T., Maier, A., Marquard, P., & Schröder, Y. (2017). The Five-loop Beta Function for a General Gauge Group. Acta Physica Polonica B, 48(12), 2331-2340. https://doi.org/10.5506/aphyspolb.48.2331

We present results for the gluon field anomalous dimension in perturbative QCD and derive the corresponding Beta function at five-loop order. All given results are valid for a general gauge group.