Study of weak corrections to Drell-Yan, top-quark pair and dijet Production at high energies with MCFM

Abstract

Electroweak (EW) corrections can be enhanced at high energies due to the soft or collinear radiation of virtual and real $W$ and $Z$ bosons that result in Sudakov-like corrections of the form ${\alpha }_W^l{\log }^n(Q^2/M_{W,Z}^2)$, where ${\alpha }_W=\alpha /(4\pi {\sin }^2{\theta }_W)$ and $n\le 2l-1$. The inclusion of EW corrections in predictions for hadron colliders is therefore especially important when searching for signals of possible new physics in distributions probing the kinematic regime $Q^2\gg M_V^2$. Next-to-leading order (NLO) EW corrections should also be taken into account when their size ($\mathcal{O}(\alpha )$) is comparable to that of QCD corrections at next-to-next-to-leading order (NNLO) ($\mathcal{O}({\alpha }_s^2)$). To this end we have implemented the NLO weak corrections to the Neutral-Current Drell-Yan process, top-quark pair production and di-jet production in the parton-level Monte-Carlo program MCFM. This enables a combined study with the corresponding QCD corrections at NLO and NNLO. We provide both the full NLO weak corrections and their Sudakov approximation since the latter is often used for a fast evaluation of weak effects at high energies and can be extended to higher orders. With both the exact and approximate results at hand, the validity of the Sudakov approximation can be readily quantified

68 pages, 29 figures, matches published version

References in corpus (36)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• Parton distributions for the LHC
• Vector boson pair production at the LHC
• Vector boson production at hadron colliders: a fully exclusive QCD calculation at NNLO
• -- HATHOR -- HAdronic Top and Heavy quarks crOss section calculatoR
• Electroweak gauge boson production at hadron colliders through O(alpha_s^2)
• FEWZ 2.0: A code for hadronic Z production at next-to-next-to-leading order
• Precision electroweak calculation of the production of a high transverse-momentum lepton pair at hadron colliders
• Second order QCD corrections to jet production at hadron colliders: the all-gluon contribution
• Drell-Yan lepton pair production at NNLO QCD with parton showers
• Mixed QCD-electroweak O(α_sα) corrections to Drell-Yan processes in the resonance region: pole approximation and non-factorizable corrections
• Electroweak effects in top-quark pair production at Hadron Colliders
• Weak interaction corrections to hadronic top quark pair production
• NNLOPS accurate Drell-Yan production
• One-loop corrections to the Drell--Yan process in SANC (II). The neutral current case
• Electroweak Sudakov Corrections using Effective Field Theory
• Weak Boson Emission in Hadron Collider Processes
• NLO electroweak corrections to off-shell top-antitop production with leptonic decays at the LHC
• Electroweak Corrections using Effective Field Theory: Applications to the LHC
• Two-loop electroweak next-to-leading logarithmic corrections to massless fermionic processes
• Weak corrections to gluon-induced top-antitop hadro-production
• NLO QED contributions to top-pair production at hadron collider
• The photon PDF of the proton
• NNNLO soft-gluon corrections for the top-antitop pair production cross section
• Physics at a 100 TeV pp collider: Standard Model processes
• NNNLO soft-gluon corrections for the top-quark $p_T$ and rapidity distributions
• Weak interaction corrections to hadronic top quark pair production: contributions from quark-gluon and $b\bar{b}$ induced reactions
• The top quark forward-backward asymmetry at approximate N${}^3$LO
• Weak corrections to four-parton processes
• Electroweak Sudakov Logarithms and Real Gauge-Boson Radiation in the TeV Region
• Non-cancellation of electroweak logarithms in high-energy scattering
• Photon-initiated processes at high mass
• The two-loop vector form factor in the Sudakov limit
• Search for quark contact interactions and extra spatial dimensions using dijet angular distributions in proton-proton collisions at sqrt(s) = 8 TeV
• The Electroweak Sudakov approximation in SHERPA
• Precise QCD predictions for jet production at the LHC

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• NNLO QCD corrections in full colour for jet production observables at the LHC
• Observation of $t\bar{t}$ production in the lepton+jets and dilepton channels in $p$+Pb collisions at $\sqrt{s_{\mathrm{NN}}}=8.16$ TeV with the ATLAS detector
• Antenna subtraction for jet production observables in full colour at NNLO
• Observation of top-quark pair production in lead-lead collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV with the ATLAS detector
• New Physics Through Drell Yan SMEFT Measurements at NLO
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• Computer modeling of production cross sections for beyond SM particles