The anomalous $Wtb$ vertex and top-pair production at the LHC

Apurba Tiwari; Sudhir Kumar Gupta

doi:10.1016/j.nuclphysb.2022.115898

paper

The anomalous $W t b$ vertex and top-pair production at the LHC

arXiv:2204.12800 · doi:10.1016/j.nuclphysb.2022.115898

Abstract

We perform an exclusive study of the anomalous $W t b$ interaction in the context of LHC. The limits on $W t b$ anomalous couplings have been estimated via the measurements of the top-quark decay width and cross-section as well as production asymmetries in case the CP is violated. Our investigations reveal that the upper bounds on $(∣ C_{L} ∣, ∣ C_{R} ∣)$ would be of about (1.82, 0.03) $\times 1 0^{- 4}$ at $2.5 σ$ C.L., for the already collected data at the LHC with $S = 13$ TeV for an integrated luminosity of 139 fb $^{- 1}$ . The corresponding limits for future hadron colliders, namely, High Luminosity LHC (HL-LHC), High Energy LHC (HE-LHC) and Future Circular Collider (FCC-hh) for the projected luminosities of 3 ab $^{- 1}$ , 12 ab $^{- 1}$ and 30 ab $^{- 1}$ are found to be to $(0.81, 0.006) \times 1 0^{- 4}$ , $(0.44, 0.0017) \times 1 0^{- 4}$ and $(0.21, 0.0004) \times 1 0^{- 4}$ respectively at 2.5 $σ$ C. L..

arXiv comment18 pages, 11 figures

The anomalous Wtb vertex and top-pair production at the LHC

Abstract

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The anomalous $W t b$ vertex and top-pair production at the LHC