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Matching and comparing measurements of past and future experiments calls for consistency checks of calculations used for their interpretation. New schemes of the field theory may optimize precision, but obscure comparisons with earlier…

高能物理 - 唯象学 · 物理学 2021-02-16 E. Richter-Was , Z. Was

Electroweak (EW) corrections at the LHC can be enhanced at high energies due to soft/collinear radiation of W and Z bosons, being dominated by Sudakov-like corrections in the form of $\alpha_W^l\log^n(Q^2/M_W^2)$ $(n \le 2l, \alpha_W =…

高能物理 - 唯象学 · 物理学 2015-08-26 John M. Campbell , Doreen Wackeroth , Jia Zhou

Precision tests of the Standard Model (SM) require not only accurate experiments, but also precise and reliable theoretical predictions. Triple vector boson production provides a unique opportunity to investigate the quartic gauge couplings…

高能物理 - 唯象学 · 物理学 2016-11-08 Shen Yong-Bai , Zhang Ren-You , Ma Wen-Gan , Li Xiao-Zhou , Zhang Yu , Guo Lei

The precision measurement of the mass of the $W$ boson is an important goal of the Fermilab Tevatron and the CERN Large Hadron Collider (LHC). It requires accurate theoretical calculations which incorporate both higher-order QCD and…

高能物理 - 唯象学 · 物理学 2013-05-30 C. Bernaciak , D. Wackeroth

The associate production of Higgs bosons with W or Z bosons, known as Higgs-strahlung, is an important search channel for Higgs bosons at the hadron colliders Tevatron and LHC for low Higgs-boson masses. We refine a previous calculation of…

高能物理 - 唯象学 · 物理学 2015-06-03 A. Denner , S. Dittmaier , S. Kallweit , A. Mück

Due to the inclination for forward gauge radiation, lepton colliders beyond a few TeV are effectively electroweak (EW) boson colliders, suggesting the treatment of EW bosons as constituents of high-energy leptons. In the context of a muon…

高能物理 - 唯象学 · 物理学 2022-06-27 Richard Ruiz , Antonio Costantini , Fabio Maltoni , Olivier Mattelaer

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 have studied the effects of the complete logarithmic electroweak O(alpha) corrections on the production of vector-boson pairs WZ, ZZ, and WW at the LHC. These corrections are implemented into a Monte Carlo program for pp -> 4f (+\gamma)…

高能物理 - 唯象学 · 物理学 2008-11-26 E. Accomando , A. Denner , A. Kaiser

We present results on NLO electroweak (EW) corrections to multiple massive boson production processes at a future muon collider. Inclusive cross sections with $\mathcal{O}(\alpha)$ corrections for processes for up to four bosons in the…

高能物理 - 唯象学 · 物理学 2023-01-18 Pia Bredt , Wolfgang Kilian , Jürgen Reuter , Pascal Stienemeier

In this work we investigate several phenomenological and technical aspects related to electroweak (EW) corrections at a high-energy muon collider, focusing on direct production processes (no VBF configurations). We study in detail the…

高能物理 - 唯象学 · 物理学 2026-02-20 Yang Ma , Davide Pagani , Marco Zaro

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…

高能物理 - 唯象学 · 物理学 2016-03-23 Ansgar Denner , Stefan Dittmaier , Markus Hecht , Christian Pasold

In this talk we discuss the next-to-leading-order electroweak (EW) corrections to W-boson + jet hadroproduction [1] and compare the full result to a simple approximation assuming factorization of EW and QCD corrections for the…

高能物理 - 唯象学 · 物理学 2010-01-15 Ansgar Denner , Stefan Dittmaier , Tobias Kasprzik , Alexander Mück

The first calculation of the next-to-leading-order electroweak corrections to Z-boson + jet hadroproduction including leptonic Z-boson decays is presented, i.e. to the production of a charged lepton--anti-lepton final state in association…

高能物理 - 唯象学 · 物理学 2015-05-27 Ansgar Denner , Stefan Dittmaier , Tobias Kasprzik , Alexander Mück

Measurements of electroweak precision observables at future electron-positron colliders, such as the CEPC, FCC-ee, and ILC, will be sensitive to physics at multi-TeV scales. To achieve this sensitivity, precise predictions for the Standard…

高能物理 - 唯象学 · 物理学 2021-04-07 Lisong Chen , Ayres Freitas

The leading electroweak MSSM two-loop corrections to the electroweak precision observables are calculated. They are obtained by evaluating the two-loop O(\alpha_t^2), O(\alpha_t \alpha_b), O(\alpha_b^2) contributions to the quantity…

高能物理 - 唯象学 · 物理学 2009-11-07 S. Heinemeyer , G. Weiglein

We present Standard Model predictions for the complete set of phenomenologically relevant electroweak precision pseudo-observables related to the Z-boson: the leptonic and bottom-quark effective weak mixing angles $\sin^2\theta_{\rm…

高能物理 - 唯象学 · 物理学 2020-01-13 Ievgen Dubovyk , Ayres Freitas , Janusz Gluza , Tord Riemann , Johann Usovitsch

The detailed study of vector-boson pair production processes at the LHC will lead to a better understanding of electroweak physics. As pointed out before, a consistent inclusion of higher-order electroweak effects in the analysis of…

高能物理 - 唯象学 · 物理学 2014-01-17 Stefan Gieseke , Tobias Kasprzik , Johann H. Kühn

In this paper we present the NLO QCD + NLO EW corrections to the $ZZZ$ production with subsequent $Z$-boson leptonic decays at the LHC by adopting the improved narrow width approximation, which takes into account off-shell contributions and…

高能物理 - 唯象学 · 物理学 2016-10-20 Wang Hong , Zhang Ren-You , Ma Wen-Gan , Guo Lei , Li Xiao-Zhou , Wang Shao-Ming

We briefly report on the inclusion of NLO QCD and electroweak corrections to the Higgs-strahlung processes pp/ppbar -> HW/Z -> H+2leptons in the Monte Carlo program HAWK. The electroweak corrections, which are at the level of -(5-10)% for…

高能物理 - 唯象学 · 物理学 2011-12-23 Ansgar Denner , Stefan Dittmaier , Stefan Kallweit , Alexander Muck

The TauSpinner algorithm allows to modify the physics of the Monte Carlo generated samples due to the changed assumptions of event production dynamics, without re-generating events. To each event it attributes weights: the spin effects of…

高能物理 - 唯象学 · 物理学 2016-11-03 J. Kalinowski , W. Kotlarski , E. Richter-Was , Z. Was
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