Top quark pair production in the exclusive processes at LHC

Abstract

We analyze the LHC prospects for measurements of the $t\bar{t}$ pair produced exclusively in photon-photon or semi-exclusively in photon-Pomeron and Pomeron-Pomeron processes using protons tagged in forward proton detectors on both sides of the interaction point. These processes are interesting from the point of view of a possible measurement of the top quark mass and constraining models used in Beyond Standard Model physics. Focusing on the semi-leptonic channel, $t\bar{t}\to jjbl{\nu }_l\bar{b}$, making use of the exclusive nature of the final state, together with the use of timing information provided by forward proton detectors, relevant exclusive and inclusive backgrounds are studied in detail for different luminosity (or pile-up) scenarios and found to be important for further considerations. While good prospects are found for observing the signal, the top quark mass measurement turns out not to be competitive with measurements in inclusive channels.

arXiv comment17 pages, 5 figures, modifications reflecting the journal review output

References in corpus (42)

• An Introduction to PYTHIA 8.2
• FastJet user manual
• DELPHES 3, A modular framework for fast simulation of a generic collider experiment
• MadGraph 5 : Going Beyond
• Heavy-flavour and quarkonium production in the LHC era: from proton-proton to heavy-ion collisions
• The Physics of Ultraperipheral Collisions at the LHC
• Physics of Ultra-Peripheral Nuclear Collisions
• Proof of Factorization for Diffractive Hard Scattering
• Measurement and QCD Analysis of the Diffractive Deep-Inelastic Scattering Cross Section at HERA
• Soft diffraction and the elastic slope at Tevatron and LHC energies: a multi-Pomeron approach
• Central Exclusive Particle Production at High Energy Hadron Colliders
• Measurements of top-quark pair differential cross-sections in the lepton+jets channel in $pp$ collisions at $\sqrt{s}=8$ TeV using the ATLAS detector
• LHC Forward Physics
• Measurement of the $\mathrm{t}\overline{\mathrm{t}}$ production cross section, the top quark mass, and the strong coupling constant using dilepton events in pp collisions at $\sqrt{s}=$ 13 TeV
• Measurements of top-quark pair differential and double-differential cross-sections in the $\ell$+jets channel with $pp$ collisions at $\sqrt{s}=13$ TeV using the ATLAS detector
• Measurement of differential cross sections for the production of top quark pairs and of additional jets in lepton+jets events from pp collisions at $\sqrt{s}=$ 13 TeV
• Measurement of the top quark mass in the all-jets final state at $\sqrt{s}=$ 13 TeV and combination with the lepton+jets channel
• Measurement of the exclusive $\gamma \gamma \to {\mu }^{+}{\mu }^{-}$ process in proton--proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Elastic scattering and Diffractive dissociation in the light of LHC data
• A comprehensive model of soft interactions in the LHC era
• Measurement of the top-quark mass in $t\bar{t}+1$-jet events collected with the ATLAS detector in $pp$ collisions at $\sqrt{s}=8$ TeV
• Diffraction in Deep Inelastic Scattering
• Probe Anomalous $tq\gamma$ couplings through Single Top Photoproduction at the LHC
• Soft physics at the LHC
• Measurement of normalized differential $\mathrm{t}\overline{\mathrm{t}}$ cross sections in the dilepton channel from pp collisions at $\sqrt{s}=$ 13 TeV
• LHC Searches for Dark Matter in Compressed Mass Scenarios: Challenges in the Forward Proton Mode
• Top-Quark Physics: Status and Prospects
• Top Quark Anomalous Electromagnetic Couplings in Photon-Photon Scattering at the LHC
• Review of Central Exclusive Production of the Higgs Boson Beyond the Standard Model
• Hard Diffraction with Dynamic Gap Survival
• First global next-to-leading order determination of diffractive parton distribution functions and their uncertainties within the {\tt xFitter} framework
• Advances in diffraction of subnuclear waves
• Single- and central-diffractive production of open charm and bottom mesons at the LHC: theoretical predictions and experimental capabilities
• Subdominant terms in the production of $c\bar{c}$ pairs in proton-proton collisions
• Bottom production in Photon and Pomeron -- induced interactions at the LHC
• Single top quark photoproduction at the LHC
• Exclusive and diffractive quarkonium -- pair production at the LHC and FCC
• Production of $t\bar{t}$ pairs via $\gamma \gamma$ fusion with photon transverse momenta and proton dissociation
• Exclusive and diffractive ${\mu }^{+}{\mu }^{-}$ production in $pp$ collisions at the LHC
• Heavy quark production in photon - Pomeron interactions at hadronic colliders
• NLO QCD corrections to Single Top and W associated production at the LHC with forward detector acceptances
• Double heavy quarkonium production in diffractive processes at the Run 2 LHC energy

Cited by in corpus (16)

• Challenging exclusive top quark pair production at low and high luminosity LHC
• Performance studies of Time-of-Flight detectors at LHC
• Modelling $W^{+}{W}^{-}$ production with rapidity gaps at the LHC
• Central exclusive production of $W$ boson pairs in $pp$ collisions at the LHC in hadronic and semi-leptonic final states
• Searching for anomalous top quark interactions with proton tagging and timing detectors at the LHC
• Timelike Compton scattering in ultraperipheral $pPb$ collisions
• Exclusive doubly charged Higgs boson pair production in $pp$ collisions at the LHC
• Strategy to measure tau $g-2$ via photon fusion in LHC proton collisions
• Automated next-to-leading order QCD and electroweak predictions of photon-photon processes in ultraperipheral collisions
• Non-exclusive particle production by $\gamma \gamma$ interactions in $pp$ collisions at the LHC
• Diffractive and photon-induced production of top quark
• Search for central exclusive production of top quark pairs in proton-proton collisions at $\sqrt{s}$ = 13 TeV with tagged protons
• Illuminating the charged leptons in the proton
• Picosecond Timing-Planes for Future Collider Detectors
• Elastic Potential: A proposal to discover elastic production of top quarks at the Large Hadron Collider
• NNLO QCD corrections to $\gamma \gamma \to Q\bar{Q}$ from Local Unitarity combined with Coulomb resummation and NLO EW effects