Paul Scherrer Institute

output

19922026

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions

Showing 2019 · hep-phShow all

20 papers · 2 filters

hep-ph2019★ 4 cited

Dimensional schemes for cross sections at NNLO

Christoph Gnendiger, Adrian Signer

So far, the use of different variants of dimensional regularization has been investigated extensively for two-loop virtual corrections. We extend these studies to real corrections…

hep-ph2019

Photon pair production in gluon fusion: Top quark effects around threshold

Long Chen, Gudrun Heinrich, Stephan Jahn +4

We present a calculation of the NLO QCD corrections to the loop-induced production of a photon pair through gluon fusion, including massive top quarks at two loops. The two-loop vi…

hep-ph2019★ 120 cited

Global Fit to Modified Neutrino Couplings and the Cabibbo-Angle Anomaly

Antonio M. Coutinho, Andreas Crivellin, Claudio Andrea Manzari

Recently, discrepancies of up to $4 σ$ between the different determinations of the Cabibbo angle were observed. This "Cabibbo-angle anomaly" could be explained by lepton flavour u…

hep-ph2019★ 15 cited

Gauge Dependences of Higher-Order Corrections to NMSSM Higgs Boson Masses and the Charged Higgs Decay $H^{\pm} \to W^{\pm} h_{i}$

T. N. Dao, L. Fritz, M. Krause +2

In this paper we compute the electroweak corrections to the charged Higgs boson decay into a $W$ boson and a neutral Higgs boson in the CP-conserving NMSSM. We calculate the proces…

hep-ph2019★ 3 cited

Photon pair production in gluon fusion: Top quark effects at NLO with threshold matching

Long Chen, Gudrun Heinrich, Stephan Jahn +4

We present a calculation of the NLO QCD corrections to the loop-induced production of a photon pair through gluon fusion, including massive top quarks at two loops, where the two-l…

hep-ph2019★ 115 cited

$HEPfit$ : a Code for the Combination of Indirect and Direct Constraints on High Energy Physics Models

Jorge de Blas, Debtosh Chowdhury, Marco Ciuchini +15

$HEPfit$ is a flexible open-source tool which, given the Standard Model or any of its extensions, allows to $i)$ fit the model parameters to a given set of experi…

hep-ph2019★ 18 cited

Parton Density Uncertainties and the Determination of Electroweak Parameters at Hadron Colliders

E. Bagnaschi, A. Vicini

We discuss the determination of electroweak parameters from hadron collider observables, focusing on the $W$ boson mass measurement. We revise the procedures adopted in the literat…

hep-ph2019★ 44 cited

Correlating $ε^{'} / ε$ to hadronic $B$ decays via $U (2)^{3}$ flavour symmetry

Andreas Crivellin, Christian Gross, Stefan Pokorski +1

There are strong similarities between charge-parity (CP) violating observables in hadronic $B$ decays (in particular $Δ A_{CP}^{-}$ in $B \to K π$ ) and direct CP violation in Kaon d…

hep-ph2019★ 30 cited

A subtraction scheme for massive QED

T. Engel, A. Signer, Y. Ulrich

We present an extension of the FKS subtraction scheme beyond next-to-leading order to deal with soft singularities in fully differential calculations within QED with massive fermio…

hep-ph2019★ 82 cited

HandyG -- rapid numerical evaluation of generalised polylogarithms in Fortran

L. Naterop, A. Signer, Y. Ulrich

Generalised polylogarithms naturally appear in higher-order calculations of quantum field theories. We present handyG, a Fortran 90 library for the evaluation of such functions, by…

hep-ph2019★ 32 cited

Full two-loop QCD corrections to the Higgs mass in the MSSM with heavy superpartners

Emanuele Bagnaschi, Giuseppe Degrassi, Sebastian Paßehr +1

We improve the determination of the Higgs-boson mass in the MSSM with heavy superpartners, by computing the two-loop threshold corrections to the quartic Higgs coupling that involv…

hep-ph2019★ 20 cited

NLO QCD predictions for $t t ˉ b b ˉ$ production in association with a light jet at the LHC

Federico Buccioni, Stefan Kallweit, Stefano Pozzorini +1

Theoretical predictions for ttbb production are of crucial importance for ttH measurements in the H->bb channel at the LHC. To address the large uncertainties associated with the m…

hep-ph2019★ 564 cited

OpenLoops 2

Federico Buccioni, Jean-Nicolas Lang, Jonas M. Lindert +4

We present the new version of OpenLoops, an automated generator of tree and one-loop scattering amplitudes based on the open-loop recursion. One main novelty of OpenLoops 2 is the…

hep-ph2019★ 34 cited

NNLO QCD $\oplus$ QED corrections to Higgs production in bottom quark annihilation

Ajjath A H, Pulak Banerjee, Amlan Chakraborty +4

We present next-to-next-to leading order (NNLO) quantum electrodynamics (QED) corrections to the production of the Higgs boson in bottom quark annihilation at the Large Hadron Coll…

hep-ph2019★ 18 cited

Global Analysis of Dark Matter Simplified Models with Leptophobic Spin-One Mediators using MasterCode

E. Bagnaschi, J. C. Costa, K. Sakurai +13

We report the results of a global analysis of dark matter simplified models (DMSMs) with leptophobic mediator particles of spin one, considering the cases of both vector and axial-…

hep-ph2019★ 34 cited

Correlating Tauonic B Decays to the Neutron EDM via a Scalar Leptoquark

Andreas Crivellin, Francesco Saturnino

In this article we investigate the correlations between tauonic $B$ meson decays (e.g. $B \to τ ν$ , $B \to D^{(*)} τ ν$ , $B \to π τ ν$ ) and electric dipole moments (EDMs), in particular th…

hep-ph2019★ 99 cited

Generic Loop Effects of New Scalars and Fermions in $b \to s ℓ^{+} ℓ^{-}$ , $(g - 2)_{μ}$ and a Vector-like $4^{th}$ Generation

Pere Arnan, Andreas Crivellin, Marco Fedele +1

In this article we investigate in detail the possibility of accounting for the $b \to s ℓ^{+} ℓ^{-}$ and $(g - 2)_{μ}$ anomalies via loop contributions involving with new scalars and fe…

hep-ph2019★ 80 cited

$b \to s ℓ^{+} ℓ^{-}$ Transitions in Two-Higgs-Doublet Models

Andreas Crivellin, Dario Müller, Christoph Wiegand

In this article we study $b \to s μ^{+} μ^{-}$ transitions and possible correlations with the anomalous magnetic moment of the muon ( $a_{μ}$ ) within two-Higgs-doublet models with generic Yu…

hep-ph2019★ 219 cited

Emerging patterns of New Physics with and without Lepton Flavour Universal contributions

Marcel Algueró, Bernat Capdevila, Andreas Crivellin +5

We perform a model-independent global fit to $b \to s ℓ^{+} ℓ^{-}$ observables to confirm existing New Physics (NP) patterns (or scenarios) and to identify new ones emerging from th…

hep-ph2019★ 68 cited

$C P$ violation in Higgs-gauge interactions: from tabletop experiments to the LHC

Vincenzo Cirigliano, Andreas Crivellin, Wouter Dekens +3

We investigate the interplay between the high- and low-energy phenomenology of $C P$ -violating interactions of the Higgs boson with gauge bosons. For this purpose we use an effect…