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This PhD thesis is concerned with one-loop virtual electroweak corrections to arbitrary processes in the high-energy limit. Complete results are presented for the leading and subleading logarithms of large ratios of energy scales to mass…

高能物理 - 唯象学 · 物理学 2007-05-23 Stefano Pozzorini

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

Recently, the ATLAS and CMS collaborations jointly announced the first evidence of the rare Higgs boson decay channel $H\to Z\gamma$, with a ratio of $2.2\pm 0.7$ times the leading order standard model (SM) prediction. In order to face this…

高能物理 - 唯象学 · 物理学 2024-09-04 Zi-Qiang Chen , Long-Bin Chen , Cong-Feng Qiao , Ruilin Zhu

We compute analytically the complete electroweak two-loop corrections to the $B^0-{\bar B}^0$ mixing. These corrections fix the normalization of the electroweak coupling employed in the extraction of $|V_{td}|$ and reduce the theoretical…

高能物理 - 唯象学 · 物理学 2009-10-31 P. Gambino , A. Kwiatkowski , N. Pott

Within the framework of the MSSM, we compute the electroweak one-loop supersymmetric quantum corrections to the width $\Gamma (t\rightarrow W^{+}\, b)$ of the canonical main decay of the top quark. The results are presented in two on-shell…

高能物理 - 唯象学 · 物理学 2011-07-18 David Garcia , Ricardo A. Jimenez , Joan SOLA , Wolfgang Hollik

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 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

LEP precision on electroweak measurements was sufficient not to hamper the extraction of Higgs couplings at the LHC. But the foreseen permille-level Higgs measurements at future lepton colliders might suffer from parametric electroweak…

高能物理 - 唯象学 · 物理学 2020-09-11 Jorge de Blas , Gauthier Durieux , Christophe Grojean , Jiayin Gu , Ayan Paul

We present the first calculation of the full next-to-leading-order electroweak and QCD corrections for vector-boson scattering (VBS) into a pair of Z bosons at the LHC. We consider specifically the process ${\rm pp\to…

高能物理 - 唯象学 · 物理学 2020-12-07 Ansgar Denner , Robert Franken , Mathieu Pellen , Timo Schmidt

Single-jet production with missing transverse momentum is one of the most promising discovery channels for new physics at the LHC. In the Standard Model, Z + jet production with a Z-boson decay into neutrinos leads to this monojet…

高能物理 - 唯象学 · 物理学 2015-06-12 Ansgar Denner , Stefan Dittmaier , Tobias Kasprzik , Alexander Mück

In this contribution, we present new results of next-to-leading order (NLO) electroweak corrections to the doubly polarized $W^+W^-$ production cross sections at the LHC, via the full leptonic final state. This calculation has been recently…

高能物理 - 唯象学 · 物理学 2025-05-27 Thi Nhung Dao , Duc Ninh Le

We calculate the two--loop electroweak corrections to the fermionic decay width of the Higgs boson at leading order in $m_{H}$. The sum of one--loop and two--loop radiative corrections turns out to be at 6% level over the whole range of…

高能物理 - 唯象学 · 物理学 2009-10-28 Adrian Ghinculov

Charged Higgs particles are a common feature of many extensions of the Standard Model. While its existence with masses up to the TeV scale can be probed at the Tevatron Run II and LHC hadron colliders, a precise determination of its…

高能物理 - 唯象学 · 物理学 2007-05-23 Jaume Guasch , Wolfgang Hollik , Arnd Kraft

The test of the electroweak corrections has played a major role in providing evidence for the gauge and the Higgs sectors of the Standard Model. At the same time the consideration of the electroweak corrections has given significant…

高能物理 - 唯象学 · 物理学 2016-10-12 Riccardo Barbieri

We present results of the first calculation of next-to-leading-order electroweak corrections to W-boson pair production at the LHC that fully takes into account leptonic W-boson decays and off-shell effects. Employing realistic event…

高能物理 - 唯象学 · 物理学 2016-06-29 Benedikt Biedermann , Marina Billoni , Ansgar Denner , Stefan Dittmaier , Lars Hofer , Barbara Jager , Lukas Salfelder

We calculate the leading electroweak corrections to the light neutral Higgs boson production via $q\bar q'\to WH$ at the Fermilab Tevatron in both the standard model and the minimal supersymmetric model, which arise from the top-quark and…

高能物理 - 唯象学 · 物理学 2011-01-13 Qing Hong Cao , Chong Sheng Li , Shou Hua Zhu

The electroweak corrections to the partial widths of the $H^+ \to \tilde{\chi}^+_i \tilde{\chi}_j^0 (i=1,j=1,2)$ decays including one-loop diagrams of the third generation quarks and squarks, are investigated within the Supersymmetric…

高能物理 - 唯象学 · 物理学 2019-08-17 Wan Lang-Hui , Ma Wen-Gan , Zhang Ren-You , Jiang Yi

We report on a calculation of the `mixed' strong and (purely) weak corrections through the order $\alpha_{\mathrm{S}}^2\alpha_{\mathrm{W}}$ to parton-parton processes in all possible channels at hadron colliders entering the single jet…

高能物理 - 唯象学 · 物理学 2008-11-26 S. Moretti , M. R. Nolten , D. A. Ross

We present results for the Yukawa-enhanced and Higgs self-coupling type electroweak corrections to di-Higgs production in gluon fusion. The calculation of the corresponding four-scale, two-loop amplitude is carried out retaining the exact…

高能物理 - 唯象学 · 物理学 2024-11-18 Gudrun Heinrich , Stephen Jones , Matthias Kerner , Thomas Stone , Augustin Vestner

We update the global fit to electroweak precision observables, including the effect of the latest measurements at hadron colliders of the $W$ and top-quark masses and the effective leptonic weak mixing angle. We comment on the impact of…

高能物理 - 唯象学 · 物理学 2017-10-17 Jorge de Blas , Marco Ciuchini , Enrico Franco , Satoshi Mishima , Maurizio Pierini , Laura Reina , Luca Silvestrini