Prospect for top quark FCNC searches at the FCC-hh

Mandrik, P.

doi:10.1088/1742-6596/1390/1/012044

Cited by 16 publications

(10 citation statements)

References 14 publications

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“…At present there is no any experimental evidence of the FCNC process. One can expect that future research and improvements on these bounds with the proposed higher center-of-mass energy colliders [25], such as High Energy LHC (HE-LHC) with 27 TeV c.m. energy [26] and Future Circular Collider in hadron-hadron mode (FCC-hh) with 100 TeV c.m.…”

Section: Introductionmentioning

confidence: 99%

Probing anomalous tqh couplings via single top production in associated with the Higgs boson at the HE-LHC and FCC-hh

Zhang

Shen

2020

Eur. Phys. J. C

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We investigate the prospects for discovering the Flavour Changing Neutral Current (FCNC) tqh couplings via the process pp → th at the proposed High Energy Large Hadron Collider (HE-LHC) and Future Circular Collider in hadron-hadron mode (FCC-hh) including the realistic detector effects. The relevant SM backgrounds are considered in the cut based analysis to obtain the limits on the the branching ratios of t → qh (q = u, c), followed by the leptonic decay channel of the top quark and diphoton decay channel of the Higgs boson. The upper limits on the FCNC branching ratios at 95% confidence level (CL) and the 5σ discovery reach for the different integrated luminosities are obtained. It is shown that at the 27 TeV HE-LHC with an integrated luminosity of 15 ab −1 and at the 100 TeV FCC-hh with an integrated luminosity of 30 ab −1 , the BR(t → uh) (BR(t → ch)) can be probed, respectively, to 4.4 (6.4)×10 −5 and 1.3 (1.6)×10 −5 at the 95% CL.

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Section: Introductionmentioning

confidence: 99%

Probing anomalous tqh couplings via single top production in associated with the Higgs boson at the HE-LHC and FCC-hh

Zhang

Shen

2020

Eur. Phys. J. C

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“…The rough estimation by Backovic et al [44] has shown that it is challenging to observe the T quark with the diphoton decay channel at the 14 TeV LHC due to the small production cross section. In recent years, the proposed higher center-of-mass energy colliders have been discussed worldwide [72,74,76], such as High Energy Fig. 1 The Feynman diagrams for the process pp → Tb j LHC (HE-LHC) with 27 TeV c.m.…”

Section: Introductionmentioning

confidence: 99%

Search for single production of vectorlike top partners through th channel at the HE-LHC and FCC-hh

Tian

Liu

2021

Eur. Phys. J. C

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The vectorlike top partners are potential signature of some new physics beyond the Standard Model at the TeV scale. In this paper, we propose to search for the vectorlike T quark with charge 2/3 in the framework of a simplified model where the top partners only couples with the third generation of Standard Model quarks. We investigate the observability for electroweak production of a vectorlike T quark in association with a standard model bottom quark through the process $$pp \rightarrow T\bar{b}j$$ p p → T b ¯ j with the subsequent decay mode of $$T\rightarrow t(\rightarrow b W^+\rightarrow b \ell ^{+} \nu _{\ell })h( \rightarrow \gamma \gamma )$$ T → t ( → b W + → b ℓ + ν ℓ ) h ( → γ γ ) , at the proposed High Energy Large Hadron Collider (HE-LHC) and Future Circular Collider in hadron-hadron mode (FCC-hh) including the realistic detector effects. The 95% confidence level excluded regions and the $$5\sigma $$ 5 σ discovery reach in the parameter plane of $$\kappa _{T}-m_T$$ κ T - m T , are respectively obtained at the HE-LHC with the integrated luminosity of 15 ab$$^{-1}$$ - 1 and the FCC-hh with the integrated luminosity of 30 ab$$^{-1}$$ - 1 . We also analyze the projected sensitivity in terms of the production cross section times branching fraction at the HE-LHC and FCC-hh.

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“…One can expect to improve further these limits at higher c.m. energies [46]. The future High Energy LHC (HE-LHC) with 27 TeV c.m.…”

Section: Introductionmentioning

confidence: 99%

Probing the top-Higgs boson FCNC couplings via the h→γγ channel at the HE-LHC and FCC-hh

Liu

Moretti

2020

Phys. Rev. D

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We investigate the sensitivity of future searches for the top-Higgs Flavour Changing Neutral Current (FCNC) couplings tqh (q = u, c) at the proposed High Energy Large Hadron Collider (HE-LHC) andFuture Circular Collider in hadron-hadron mode (FCC-hh). We perform a full simulation for two processes in the h → γγ decay channel: single top quark FCNC production in association with the Higgs boson (plus a jet) and top quark pair production with FCNC decays t → qh. All the relevant backgrounds are considered in a cut based analysis to obtain the limits on the Branching Ratios (BRs) of t → uh and t → ch. It is shown that, at the HE-LHC with an integrated luminosity of 15 ab −1 and at the FCC-hh with an integrated luminosity of 30 ab −1 , the BR(t → uh) and BR(t → ch) can be probed down to the order of 10 −5 at the 95% Confidence Level (CL), which is two orders of magnitude better than the current 13 TeV LHC experimental results and one order of magnitude better than the existing projections for the 14 TeV High Luminosity LHC (HL-LHC) with an integrated luminosity of 3 ab −

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Prospect for top quark FCNC searches at the FCC-hh

Cited by 16 publications

References 14 publications

Probing anomalous tqh couplings via single top production in associated with the Higgs boson at the HE-LHC and FCC-hh

Probing anomalous tqh couplings via single top production in associated with the Higgs boson at the HE-LHC and FCC-hh

Search for single production of vectorlike top partners through th channel at the HE-LHC and FCC-hh

Probing the top-Higgs boson FCNC couplings via the h→γγ channel at the HE-LHC and FCC-hh

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