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Modular graph functions and asymptotic expansions of Poincare' series (2019)
Journal Article
Dorigoni, D., & Kleinschmidt, A. (2019). Modular graph functions and asymptotic expansions of Poincare' series. Communications in Number Theory and Physics, 13(3), 569-617

In this note we study SL(2,Z)-invariant functions such as modular graph functions or coefficient functions of higher derivative corrections in type IIB string theory. The functions solve inhomogeneous Laplace equations and we choose to represent them... Read More about Modular graph functions and asymptotic expansions of Poincare' series.

A GPU compatible quasi-Monte Carlo integrator interfaced to pySecDec (2019)
Journal Article
Borowka, S., Heinrich, G., Jahn, S., Jones, S., Kerner, M., & Schlenk, J. (2019). A GPU compatible quasi-Monte Carlo integrator interfaced to pySecDec. Computer Physics Communications, 240, 120-137. https://doi.org/10.1016/j.cpc.2019.02.015

The purely numerical evaluation of multi-loop integrals and amplitudes can be a viable alternative to analytic approaches, in particular in the presence of several mass scales, provided sufficient accuracy can be achieved in an acceptable amount of t... Read More about A GPU compatible quasi-Monte Carlo integrator interfaced to pySecDec.

Robust Independent Validation of Experiment and Theory: Rivet version 3 (2020)
Journal Article
Bierlich, C., Buckley, A., Butterworth, J., Christensen, C. H., Corpe, L., Grellscheid, D., …Siegert, F. (2020). Robust Independent Validation of Experiment and Theory: Rivet version 3. SciPost Physics, 8(2), Article 026. https://doi.org/10.21468/scipostphys.8.2.026

First released in 2010, the RIVET library forms an important repository for analysis code, facilitating comparisons between measurements of the final state in particle collisions and theoretical calculations of those final states. We give an overview... Read More about Robust Independent Validation of Experiment and Theory: Rivet version 3.

The axion mass from 5D small instantons (2020)
Journal Article
Gherghetta, T., Khoze, V. V., Pomarol, A., & Shirman, Y. (2020). The axion mass from 5D small instantons. Journal of High Energy Physics, 2020(3), Article 063. https://doi.org/10.1007/jhep03%282020%29063

We calculate a new contribution to the axion mass that arises from gluons propagating in a 5th dimension at high energies. By uplifting the 4D instanton solution to five dimensions, the positive frequency modes of the Kaluza-Klein states generate a p... Read More about The axion mass from 5D small instantons.

Leptogenesis from low energy CP violation (2019)
Journal Article
Moffat, K., Pascoli, S., Petcov, S., & Turner, J. (2019). Leptogenesis from low energy CP violation. Journal of High Energy Physics, 2019(3), Article 034. https://doi.org/10.1007/jhep03%282019%29034

We revisit the possibility of producing the observed baryon asymmetry of the Universe via thermal leptogenesis, where CP violation comes exclusively from the low-energy phases of the neutrino mixing matrix. We demonstrate the viability of thermal fla... Read More about Leptogenesis from low energy CP violation.

Analytical amplitudes from numerical solutions of the scattering equations (2020)
Journal Article
De Laurentis, G. (2020). Analytical amplitudes from numerical solutions of the scattering equations. Journal of High Energy Physics, 2020(2), Article 194. https://doi.org/10.1007/jhep02%282020%29194

The CHY formalism for massless scattering provides a cohesive framework for the computation of scattering amplitudes in a variety of theories. It is especially compelling because it elucidates existing relations among theories which are seemingly unr... Read More about Analytical amplitudes from numerical solutions of the scattering equations.

LHAPDF6: parton density access in the LHC precision era (2015)
Journal Article
Buckley, A., Ferrando, J., Lloyd, S., Nordström, K., Page, B., Rüfenacht, M., …Watt, G. (2015). LHAPDF6: parton density access in the LHC precision era. The European Physical Journal C, 75(3), Article 132. https://doi.org/10.1140/epjc/s10052-015-3318-8

The Fortran LHAPDF library has been a long-term workhorse in particle physics, providing standardised access to parton density functions for experimental and phenomenological purposes alike, following on from the venerable PDFLIB package. During Run... Read More about LHAPDF6: parton density access in the LHC precision era.

Dark matter and collider signals in an MSSM extension with vector-like multiplets (2018)
Journal Article
Araz, J. Y., Banerjee, S., Frank, M., Fuks, B., & Goudelis, A. (2018). Dark matter and collider signals in an MSSM extension with vector-like multiplets. Physical Review D, 98(11), Article 115009. https://doi.org/10.1103/physrevd.98.115009

Motivated by grand unification considerations, we analyse a simple extension of the minimal supersymmetric standard model with additional pairs of vector-like chiral supermultiplets. We focus on the so-called LND setup, which enlarges the particle co... Read More about Dark matter and collider signals in an MSSM extension with vector-like multiplets.

Resummation for rapidity distributions in top-quark pair production (2019)
Journal Article
Pecjak, B. D., Scott, D. J., Wang, X., & Yang, L. L. (2019). Resummation for rapidity distributions in top-quark pair production. Journal of High Energy Physics, 2019(3), Article 60. https://doi.org/10.1007/jhep03%282019%29060

We extend our framework for the simultaneous resummation of soft and small-mass logarithms to rapidity distributions in top quark pair production. We give numerical results for the rapidity distribution of the top quark or the anti-top quark, as well... Read More about Resummation for rapidity distributions in top-quark pair production.

Quasi-integrability of deformations of the KdV equation (2018)
Journal Article
ter Braak, F., Ferreira, L., & Zakrzewski, W. (2019). Quasi-integrability of deformations of the KdV equation. Nuclear Physics B, 939, 49-94. https://doi.org/10.1016/j.nuclphysb.2018.12.004

We investigate the quasi-integrability properties of various deformations of the Korteweg–de Vries (KdV) equation, depending on two parameters and , which include among them the regularized long-wave (RLW) and modified regularized long-wave (mRLW) eq... Read More about Quasi-integrability of deformations of the KdV equation.

Holographic reconstruction of bubble spacetimes (2019)
Journal Article
Burda, P., Gregory, R., & Jain, A. (2019). Holographic reconstruction of bubble spacetimes. Physical Review D, 99(2), Article 026003. https://doi.org/10.1103/physrevd.99.026003

We discuss the holographic reconstruction of static thin bubble walls in Bañados, Teitelboim, and Zanelli (BTZ) black hole geometries. We consider two reconstruction prescriptions suggested in recent years: hole-ography and light-cone cuts, in the co... Read More about Holographic reconstruction of bubble spacetimes.

Dual renormalization group flows in 4D (2019)
Journal Article
Abel, S., Bajc, B., & Sannino, F. (2019). Dual renormalization group flows in 4D. Physical Review D, 99(6), Article 065001. https://doi.org/10.1103/physrevd.99.065001

We present a prescription for using the a central charge to determine the flow of a strongly coupled supersymmetric theory from its weakly coupled dual. The approach is based on the equivalence of the scale-dependent a parameter derived from the four... Read More about Dual renormalization group flows in 4D.

Higgs boson production at the LHC using the qT subtraction formalism at N3LO QCD (2019)
Journal Article
Cieri, L., Chen, X., Gehrmann, T., Glover, E., & Huss, A. (2019). Higgs boson production at the LHC using the qT subtraction formalism at N3LO QCD. Journal of High Energy Physics, 2019(2), Article 96. https://doi.org/10.1007/jhep02%282019%29096

We consider higher-order QCD corrections to Higgs boson production through gluon-gluon fusion in the large top quark mass limit in hadron collisions. We extend the transverse-momentum (qT ) subtraction method to next-to-next-to-next-to-leading order... Read More about Higgs boson production at the LHC using the qT subtraction formalism at N3LO QCD.

Complete asymptotically safe embedding of the standard model (2019)
Journal Article
Abel, S., Mølgaard, E., & Sannino, F. (2019). Complete asymptotically safe embedding of the standard model. Physical Review D, 99(3), Article 035030. https://doi.org/10.1103/physrevd.99.035030

We present and discuss the “Tetrad Model”, a large color/flavor embedding of the Standard model which has an interacting ultraviolet fixed point. It is shown that its extended-Pati-Salam symmetry is broken radiatively via the Coleman-Weinberg mechani... Read More about Complete asymptotically safe embedding of the standard model.

Accurate simulation of W, Z, and Higgs boson decays in Sherpa (2019)
Journal Article
Krauss, F., Lindert, J. M., Linten, R., & Schönherr, M. (2019). Accurate simulation of W, Z, and Higgs boson decays in Sherpa. The European Physical Journal C, 79(2), Article 143. https://doi.org/10.1140/epjc/s10052-019-6614-x

We discuss the inclusion of next-to–next-to leading order electromagnetic and of next-to leading order electroweak corrections to the leptonic decays of weak gauge and Higgs bosons in the Sherpa event generator. To this end, we modify the Yennie– Fra... Read More about Accurate simulation of W, Z, and Higgs boson decays in Sherpa.