Implications of Four-Top and Top-Pair Studies on Triple-Top Production

Abstract

Multi-top quark production is a staple program at the LHC. Single-top and $t\bar{t}$ productions are studied extensively, while current efforts are zooming in on four-top search, where the Standard Model (SM) cross section is at $\mathcal{O}(10)$ fb. In contrast, only at the fb level in SM, triple-top production has not been targeted for study so far. But such a small cross section makes it a unique probe for New Physics. Without the usual discrete $Z_2$ symmetry, the general two Higgs doublet model (g2HDM) can naturally raise the triple-top production to pb level. We illustrate how certain signal regions of four-top search can be utilized to constrain triple-top production, but urge a dedicated search. As an aside, we note that the CMS study at 13 TeV of scalar $t\bar{t}$ resonance interfering with QCD production background indicate some activity at 400 GeV. We comment that this could be explained in principle in g2HDM via the extra top Yukawa coupling.

matches the published version

References in corpus (8)

• An Introduction to PYTHIA 8.2
• Comparative study of various algorithms for the merging of parton showers and matrix elements in hadronic collisions
• Search for heavy Higgs bosons $A/H$ decaying to a top quark pair in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• Searching for new scalar bosons via triple-top signature in $cg\to t{S}^0\to tt\bar{t}$
• Search for four-top-quark production in the single-lepton and opposite-sign dilepton final states in pp collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
• Constraining a Lighter Exotic Scalar via Same-sign Top
• Muon $g-2$ in a $U(1)$-symmetric Two-Higgs-Doublet Model
• Top-Assisted Di-Higgs boson Production Motivated by Baryogenesis

Cited by in corpus (16)

• Possible indications for new Higgs bosons in the reach of the LHC: N2HDM and NMSSM interpretations
• Constraining $t\to u$ flavor changing neutral Higgs coupling at the LHC
• Sub-TeV $H^{+}$ Boson Production as Probe of Extra Top Yukawa Couplings
• Probing Electroweak Baryogenesis induced by extra bottom Yukawa coupling via EDMs and collider signatures
• The $tZH$ and $tZh$ production in 2HDM: Prospects for discovery at the LHC
• Search for heavy Higgs bosons with flavour-violating couplings in multi-lepton plus $b$-jets final states in $pp$ collisions at 13 TeV with the ATLAS detector
• Collider Prospects for Muon $g-2$ in General Two Higgs Doublet Model
• The Coming Decade of $h\to \tau \mu$ and $\tau \to \mu \gamma$ Interplay in $\tau$ Flavor Violation Search
• Probing four-fermion operators in the triple top production at future hadron colliders
• A Final Word on FCNC-Baryogenesis from Two Higgs Doublets
• Top FCNC induced by a Z' boson
• Decadal Mission for the New Physics Higgs/Flavor Era
• Prospect and implications of $cg\to b{H}^{+}\to bA{W}^{+}$ production at the LHC
• Searching for Charged Higgs Bosons via $e^{+}{e}^{-}\to H^{+}{H}^{-}\to c\bar{b}\bar{c}b$ at Linear Colliders
• Electroweak baryogenesis via bottom transport: complementarity between LHC and future lepton collider probes
• The $R^2$-Higgs inflation with two Higgs doublets