Precision predictions for scalar leptoquark pair-production at hadron colliders

Abstract

We revisit scalar leptoquark pair-production at hadron colliders and significantly improve the level of precision of the cross section calculations. Apart from QCD contributions, we include lepton t-channel exchange diagrams that turn out to be relevant in the light of the recent B-anomalies. We evaluate all contributions at next-to-leading-order accuracy in QCD and resum, in the threshold regime, soft-gluon radiation at next-to-next-to-leading logarithmic accuracy. Our predictions consist hence in the most precise leptoquark cross section calculations available to date, and are necessary for the best exploitation of leptoquark searches at the LHC.

arXiv comment7 pages, 2 figures; version accepted by PRD

References in corpus (43)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• A general framework for implementing NLO calculations in shower Monte Carlo programs: the POWHEG BOX
• FeynRules 2.0 - A complete toolbox for tree-level phenomenology
• Final Report of the Muon E821 Anomalous Magnetic Moment Measurement at BNL
• Automatized One-Loop Calculations in 4 and D dimensions
• Generating Feynman Diagrams and Amplitudes with FeynArts 3
• UFO - The Universal FeynRules Output
• The Muon g-2
• Evidence for an excess of B -> D(*) Tau Nu decays
• Collier: a fortran-based Complex One-Loop LIbrary in Extended Regularizations
• Test of lepton universality with $B^0\to K^{\ast 0}{\ell }^{+}{\ell }^{-}$ decays
• Physics of leptoquarks in precision experiments and at particle colliders
• Measurement of the ratio of branching fractions $\mathcal{B}({\overline{B}}^0\to D^{\ast +}{\tau }^{-}{\overline{\nu }}_{\tau })/\mathcal{B}({\overline{B}}^0\to D^{\ast +}{\mu }^{-}{\overline{\nu }}_{\mu })$
• Reduction schemes for one-loop tensor integrals
• B-physics anomalies: a guide to combined explanations
• One Leptoquark to Rule Them All: A Minimal Explanation for $R_{D^{(\ast )}}$, $R_K$ and $(g-2{)}_{\mu }$
• Measurement of the $\tau$ lepton polarization and $R(D^{\ast })$ in the decay $\bar{B}\to D^{\ast }{\tau }^{-}{\bar{\nu }}_{\tau }$
• The Resummation of Soft Gluon in Hadronic Collisions
• Search for lepton-universality violation in $B^{+}\to K^{+}{\ell }^{+}{\ell }^{-}$ decays
• Squark and gluino production cross sections in pp collisions at $\sqrt{s}$ = 13, 14, 33 and 100 TeV
• Simultaneous Explanation of $R(D^{(\ast )})$ and $b\to s{\mu }^{+}{\mu }^{-}$: The Last Scalar Leptoquarks Standing
• Reduction of one-loop tensor 5-point integrals
• Measurement of the ratio of the $B^0\to D^{\ast -}{\tau }^{+}{\nu }_{\tau }$ and $B^0\to D^{\ast -}{\mu }^{+}{\nu }_{\mu }$ branching fractions using three-prong $\tau$-lepton decays
• $R_K$ and future $b\to s\ell \ell$ BSM opportunities
• Precision predictions for electroweak superpartner production at hadron colliders with Resummino
• Sudakov Factorization and Resummation
• Closing the window on single leptoquark solutions to the $B$-physics anomalies
• Scalar one-loop 4-point integrals
• Automatic evaluation of UV and R2 terms for beyond the Standard Model Lagrangians: a proof-of-principle
• Pair production of scalar leptoquarks at the LHC
• Pair production of scalar leptoquarks at the Tevatron
• A leptoquark model to accommodate $R_K^{\exp }<R_K^{\mathrm{SM}}$ and $R_{K^{\ast }}^{\exp }<R_{K^{\ast }}^{\mathrm{SM}}$
• Leptoquark toolbox for precision collider studies
• Pair Production of Scalar Leptoquarks at the LHC to NLO Parton Shower Accuracy
• NNLL resummation for stop pair-production at the LHC
• Search for heavy neutrinos and third-generation leptoquarks in hadronic states of two $\tau$ leptons and two jets in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Searches for third-generation scalar leptoquarks in $\sqrt{s}$ = 13 TeV pp collisions with the ATLAS detector
• Probing low energy scalar leptoquarks by the leptonic $W$ and $Z$ couplings
• Search for pair production of second-generation leptoquarks at $\sqrt{s}=$ 13 TeV
• Search for leptoquarks coupled to third-generation quarks in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Searches for scalar leptoquarks and differential cross-section measurements in dilepton-dijet events in proton-proton collisions at a centre-of-mass energy of $\sqrt{s}$ = 13 TeV with the ATLAS experiment
• Search for pair production of first-generation scalar leptoquarks at $\sqrt{s}=$ 13 TeV
• Search for a singly produced third-generation scalar leptoquark decaying to a $\tau$ lepton and a bottom quark in proton-proton collisions at $\sqrt{s}=$ 13 TeV

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• Leptoquarks in Oblique Corrections and Higgs Signal Strength: Status and Prospects
• Leptoquark manoeuvres in the dark: a simultaneous solution of the dark matter problem and the $R_{D^{(\ast )}}$ anomalies
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• Scalar leptoquark pair production at the LHC: precision predictions in the era of flavour anomalies
• Search for pair-produced scalar and vector leptoquarks decaying into third-generation quarks and first- or second-generation leptons in pp collisions with the ATLAS detector
• Simplified leptoquark models for precision $l_i\to l_f\gamma$ experiments: two-loop structure of $O({\alpha }_S{Y}^2)$ corrections
• Resonant leptoquark at NLO with POWHEG
• Search for pair production of third-generation leptoquarks decaying into a bottom quark and a $\tau$-lepton with the ATLAS detector
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• Constraints on leptoquarks from lepton-flavour-violating tau-lepton processes
• Addendum to: Combined Constraints on First Generation Leptoquarks
• Scalar leptoquarks at the LHC and flavour anomalies: a comparison of pair-production modes at NLO-QCD
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