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We uncover a contribution to the NLO/NLL threshold resummed total cross section for top quark pair production at hadron colliders, which has not been taken into account in earlier literature. We derive this contribution - the difference…

高能物理 - 唯象学 · 物理学 2009-10-02 M. Czakon , A. Mitov

We discuss recent progress concerning the resummation of large logarithms at next-to-leading power (NLP) in scattering processes near threshold. We begin by briefly reviewing the diagrammatic and SCET approach, which are used to derive…

高能物理 - 唯象学 · 物理学 2022-08-04 Leonardo Vernazza

We present precise resummed predictions for Higgs boson rapidity distribution through bottom quark annihilation at next-to-next-to-leading logarithmic (NNLL) accuracy matched to next-to-next-to-leading order (NNLO) and at…

高能物理 - 唯象学 · 物理学 2023-11-22 Goutam Das

We describe predictions for top-quark pair differential distributions at hadron colliders, which combine state-of-the-art NNLO QCD calculations and NLO electroweak corrections together with double resummation at NNLL$'$ accuracy of…

We study QCD corrections for the associated production of a single top quark and a photon ($tq\gamma$ production) at hadron colliders. We calculate the NLO cross section at LHC and future collider energies for a variety of kinematical cuts,…

高能物理 - 唯象学 · 物理学 2022-08-08 Nikolaos Kidonakis , Nodoka Yamanaka

We present the differential predictions for the rapidity distribution of a pair of leptons through the Drell-Yan (DY) process at the LHC taking into account the soft-virtual (SV) as well as next-to-soft virtual (NSV) resummation effects in…

高能物理 - 唯象学 · 物理学 2023-06-07 A. H. Ajjath , Pooja Mukherjee , V. Ravindran , Aparna Sankar , Surabhi Tiwari

Using non-relativistic effective theories, new next-to-next-to-leading order (NNLO) QCD corrections to the total $t\bar t$ production cross section at the Linear Collider have been calculated recently. In this article the NNLO calculations…

We present a calculation of soft-gluon corrections in FCNC top-quark production via anomalous $t$-$q$-$g$ couplings. The soft anomalous dimension matrix is explicitly calculated at one-loop accuracy. This calculation allows threshold…

高能物理 - 唯象学 · 物理学 2014-10-01 Nikolaos Kidonakis , Elwin Martin

We present details of a calculation of the cross section for hadronic top-antitop production in next-to-leading order (NLO) QCD, including the decays of the top and antitop into bottom quarks and leptons. This calculation is based on matrix…

高能物理 - 唯象学 · 物理学 2012-11-07 Ansgar Denner , Stefan Dittmaier , Stefan Kallweit , Stefano Pozzorini

We study soft and collinear gluon emission in squark decays to quark--neutralino pair, at next-to-next-to-leading logarithmic (NNLL) accuracy in the end-point region, using Soft Collinear Effective Theory (SCET), and at next-to-leading…

高能物理 - 唯象学 · 物理学 2020-07-21 Chul Kim , Jeong Han Kim , Seung J. Lee , Jure Zupan

We calculate higher-order soft-gluon corrections for the associated production of a top-antitop quark pair and a $Z$ boson ($t{\bar t}Z$ production) in proton-proton collisions. We find that these corrections are numerically dominant and…

高能物理 - 唯象学 · 物理学 2024-12-04 Nikolaos Kidonakis , Chris Foster

The production rate for top quarks at the Fermilab Tevatron is presented using the exact order $\alpha_s^3$ corrected cross section and the resummation of the leading soft gluon corrections in all orders of perturbation theory.

高能物理 - 唯象学 · 物理学 2008-11-26 E. Laenen , J. Smith , W. L. van Neerven

We introduce a new version of the FONLL code, now capable of calculating differential distributions for top quark production with next-to-leading-log resummation of log(p_t/m) terms. Numerical results for LHC and FCC kinematics are…

高能物理 - 唯象学 · 物理学 2018-09-19 Matteo Cacciari

I present improved predictions for the total hadronic cross section of stop-antistop production at hadron colliders including next-to-next-to-leading-order threshold corrections and approximated Coulomb corrections. The results are based on…

高能物理 - 唯象学 · 物理学 2011-07-15 Ulrich Langenfeld

Single slepton production in association with a top quark at the CERN Large Hadron Collider (LHC) is one of the important processes in probing the R-parity violation couplings. We calculate the QCD next-to-leading order (NLO) corrections to…

高能物理 - 唯象学 · 物理学 2012-03-29 Li Xiao-Peng , Guo Lei , Ma Wen-Gan , Han Liang , Zhang Ren-You , Wang Shao-Ming

We study the threshold effects for the associated production of a Higgs boson with a massive vector boson $(V=Z,W)$ in the $q\bar{q} \rightarrow V^\star \rightarrow VH$ process at the LHC. By leveraging the universality of threshold…

高能物理 - 唯象学 · 物理学 2025-11-05 Arunima Bhattacharya , Chinmoy Dey , M. C. Kumar , Vaibhav Pandey

Collider observables involving heavy particles are subject to large logarithmic terms near threshold, which must be summed to all orders in perturbation theory to obtain sensible results. Relatively recently, this resummation has been…

高能物理 - 唯象学 · 物理学 2022-01-05 Melissa van Beekveld , Leonardo Vernazza , Chris D. White

We use a recent approach to soft-gluon resummation based on effective field theory to implement soft-gluon resummation at NNNLL order for slepton-pair production in SUSY extensions of the Standard Model. This approach resums large…

高能物理 - 唯象学 · 物理学 2012-08-06 Alessandro Broggio , Matthias Neubert , Leonardo Vernazza

I review calculations of soft-gluon corrections for top-quark production in hadron collisions. I describe theoretical formalisms for their resummation and for finite-order expansions. I show that soft-gluon corrections are dominant for a…

高能物理 - 唯象学 · 物理学 2018-09-03 Nikolaos Kidonakis

We report on recent results on the differential cross section for slepton pair-production at hadron colliders. We use an approach to threshold resummation, based on soft-collinear effective theory, to quantify the dynamical enhancement of…

高能物理 - 唯象学 · 物理学 2011-11-04 Alessandro Broggio , Matthias Neubert , Leonardo Vernazza