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This dissertation addresses a topic that I have worked on over the past decade: the automation of next-to-leading order electroweak corrections in the Standard Model of particle physics. After introducing the basic concepts and techniques…

High Energy Physics - Phenomenology · Physics 2025-01-17 Hua-Sheng Shao

We present the key features relevant to the automated computation of all the leading- and next-to-leading order contributions to short-distance cross sections in a mixed-coupling expansion, with special emphasis on the first subleading NLO…

High Energy Physics - Phenomenology · Physics 2021-10-22 R. Frederix , S. Frixione , V. Hirschi , D. Pagani , H. -S. Shao , M. Zaro

Triple-W-boson production in proton-proton collisions allows for a direct access to the triple and quartic gauge couplings and provides a window to the mechanism of electroweak symmetry breaking. It is an important process to test the…

High Energy Physics - Phenomenology · Physics 2017-09-20 Stefan Dittmaier , Alexander Huss , Gernot Knippen

This report was prepared in the context of the LPCC "Electroweak Precision Measurements at the LHC WG" and summarizes the activity of a subgroup dedicated to the systematic comparison of public Monte Carlo codes, which describe the…

We present next-to-leading order (NLO) calculations including QCD and electroweak (EW) corrections for $2\ell2\nu$ diboson signatures with two opposite-charge leptons and two neutrinos. Specifically, we study the processes $pp\to e^+ \mu^-…

High Energy Physics - Phenomenology · Physics 2017-12-25 S. Kallweit , J. M. Lindert , S. Pozzorini , M. Schonherr

We present the next-to-leading order (NLO) electroweak (EW) corrections to the top quark pair production associated with a hard photon at the current and future hadron colliders. The dependence of the leading order (LO) and NLO EW corrected…

High Energy Physics - Phenomenology · Physics 2017-01-17 Peng-Fei Duan , Yu Zhang , Yong Wang , Mao Song , Gang Li

We present predictions for the cross sections of coherent $J/\psi$ photoproduction in lead-lead and oxygen-oxygen ultraperipheral collisions (UPCs) as a function of the $J/\psi$ rapidity at the LHC in the framework of collinear…

High Energy Physics - Phenomenology · Physics 2023-12-21 Kari J. Eskola , Christopher A. Flett , Vadim Guzey , Topi Löytäinen , Hannu Paukkunen

In this work we present a new approach for the combination of electroweak (EW) corrections at high energies, the so-called EW Sudakov logarithms (EWSL), and next-to-leading-order QCD predictions matched to parton-shower simulations…

High Energy Physics - Phenomenology · Physics 2024-05-24 Davide Pagani , Timea Vitos , Marco Zaro

We present a calculation of the next-to-leading-order QCD and electroweak corrections to WWW production with leptonically decaying $\mathrm{W}$ bosons at the LHC, fully taking into account off-shell contributions, intermediary resonances,…

High Energy Physics - Phenomenology · Physics 2020-03-18 Stefan Dittmaier , Gernot Knippen , Christopher Schwan

The next-to-leading-order electroweak corrections to $pp\to l^+l^-/\bar\nu\nu+\gamma+X$ production, including all off-shell effects of intermediate Z bosons in the complex-mass scheme, are calculated for LHC energies, revealing the…

High Energy Physics - Phenomenology · Physics 2016-03-23 Ansgar Denner , Stefan Dittmaier , Markus Hecht , Christian Pasold

Next-to-leading-order (NLO) quantum electrodynamics (QED) corrections to the production of muon and tau pairs in photon-photon collisions, $\gamma\gamma\to\mu^{+}\mu^{-},\tau^{+}\tau^{-}$, are calculated in the equivalent photon…

High Energy Physics - Phenomenology · Physics 2025-02-19 Hua-Sheng Shao , David d'Enterria

In this talk we present a fully automated implementation of next-to-leading order electroweak (NLO EW) corrections in OpenLoops together with Sherpa and Munich. As a first application, we present NLO QCD+EW predictions for the production of…

High Energy Physics - Phenomenology · Physics 2015-05-22 Stefan Kallweit , Jonas M. Lindert , Stefano Pozzorini , Marek Schönherr , Philipp Maierhöfer

We present a fully automated implementation of next-to-leading order electroweak (NLO EW) corrections in the OpenLoops matrix-element generator combined with the Sherpa and Munich Monte Carlo frameworks. The process-independent character of…

High Energy Physics - Phenomenology · Physics 2015-03-20 Stefan Kallweit , Jonas M. Lindert , Philipp Maierhöfer , Stefano Pozzorini , Marek Schönherr

Triboson production processes play a crucial role in probing the electroweak sector of the Standard Model, as they involve quartic gauge-boson couplings already at the tree level. With these measurements entering the precision era at the…

High Energy Physics - Phenomenology · Physics 2025-11-26 Paolo Garbarino , Massimiliano Grazzini , Stefan Kallweit , Chiara Savoini

We present the theoretical predictions including the complete next-to-leading order (NLO) QCD corrections to the top-quark pair production in association with a photon at the LHC with center-of-mass system energy of $7 {\rm TeV}$. The…

High Energy Physics - Phenomenology · Physics 2015-05-30 Duan Peng-Fei , Zhang Ren-You , Ma Wen-Gan , Han Liang , Guo Lei , Wang Shao-Ming

We consider large-angle two photon production in $e^+ e^-$ annihilation as a possible process to monitor the luminosity of a future $e^+ e^-$ circular collider (FCC-ee). We review and assess the status of the theoretical accuracy by…

High Energy Physics - Phenomenology · Physics 2019-10-02 Carlo M. Carloni Calame , Mauro Chiesa , Guido Montagna , Oreste Nicrosini , Fulvio Piccinini

We compute the contribution of order $\alpha_S^2\alpha^2$ to the cross section of a top-antitop pair in association with at least one heavy Standard Model boson -- $Z$, $W^\pm$, and Higgs -- by including all effects of QCD, QED, and weak…

High Energy Physics - Phenomenology · Physics 2015-04-15 S. Frixione , V. Hirschi , D. Pagani , H. -S. Shao , M. Zaro

We present a fully automated framework based on the FeynRules and MadGraph5 aMC@NLO programs that allows for accurate simulations of supersymmetric QCD processes at the LHC. Starting directly from a model Lagrangian that features squark and…

High Energy Physics - Phenomenology · Physics 2016-02-23 Celine Degrande , Benjamin Fuks , Valentin Hirschi , Josselin Proudom , Hua-Sheng Shao

Electroweak (EW) triboson production processes with at least one heavy gauge boson are of increasing interest at the Large Hadron Collider (LHC) as direct precision probes of one of the least-tested sectors of the Standard Model (SM), the…

High Energy Physics - Phenomenology · Physics 2022-05-18 Huanfeng Cheng , Doreen Wackeroth

With the advent of precision measurements of photon-fusion processes in ultraperipheral collisions (UPCs) at facilities, such as RHIC and the LHC, the inclusion of higher-order corrections has become essential. While automated frameworks…

High Energy Physics - Phenomenology · Physics 2025-08-29 Hua-Sheng Shao , Lukas Simon
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