Study of Top Quark FCNC

Najafabadi, M. Mohammadi; Tazik, N.

doi:10.1088/0253-6102/52/4/21

Cited by 8 publications

(2 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Top quark interactions play a key role and provide very unique exploration opportunities to extended theories due to their huge mass nearly the same amount with the electroweak scale, for the examination of these theories. [3] A salient feature of the usual top quark sector is that the Flavor Changing Neutral Current (FCNC) transitions are exceedingly weak as a result of the Glashow-Iliopoulos-Maiani (GIM) mechanism. According to the GIM mechanism, these interactions are prohibited at tree-level and are immensely repressed at the loop-level.…”

Section: Introductionmentioning

confidence: 99%

Probing the anomalous tqgamma couplings in photon-proton collisions

Alici

2022

Preprint

View full text Add to dashboard Cite

The top quark flavor changing neutral current processes are extremely suppressed within the Standard Model. Nevertheless, they could be enhanced in a new physics model beyond the Standard Model. Investigating the top quark's flavor changing neutral current interactions at colliders would be an important test in terms of new physics. In this work, we examine the potentials of the processes e − p→e − γ * p→e − W + bγ * →e − j jbγ * and e − p→e − γ * p→e − W + bγ * →e − lν l bγ * at the FCCeh with √ s = 7.08 and 10.0T eV to study anomalous tqγ couplings via effective Lagrangians. We obtain 95% confidence level sensitivities on the anomalous coupling parameters at the three FCCeh energies and various integrated luminosities. We find that our limits are at least two orders of magnitude better than the current LHC experimental results.

show abstract

Section: Introductionmentioning

confidence: 99%

Probing the anomalous tqgamma couplings in photon-proton collisions

Alici

2022

Preprint

View full text Add to dashboard Cite

show abstract

“…In order to answer these questions, different theoretical models beyond the SM, called new physics (NP), have been suggested in the literature. In addition, the interactions of the top quark take more attention among these NP model interactions, because the top quark is the only fermion that it has mass at the scale of electroweak symmetry breaking [3].…”

Section: Introductionmentioning

confidence: 99%

Probing the anomaloustqγ couplings through single top production at the future lepton–hadron colliders

Alici

Köksal

2019

Mod. Phys. Lett. A

View full text Add to dashboard Cite

The measurements of the top quark flavor changing neutral current interactions are one of the most important goals of the top quark physics program in the present and the future collider experiments. These measurements provide direct information on non-standard interactions of the top quark. Within the framework of new physics beyond the Standard Model, these interactions can be defined by an effective Lagrangian. In this study, we have investigated the potential of the future µp colliders on the top quark flavor changing neutral current interactions through the subprocesses γq → t → W b where q = u, c. These subprocesses have been produced through the main reaction µp → µγp → µW bX at the LHC−µp, the FCC−µp and the SPPC-µp . For the main reaction, the total cross sections have been calculated as a function of the anomalous tqγcouplings. In addition, sensivities on BR(t → qγ) at 95% Confidence Level have been calculated.We obtain that the best constraints on BR(t → qγ) are at the order of 10 −7 which is four orders of magnitude better than the LHC's experimental results.

show abstract

Probing the Anomalous tqgamma Couplings in Photon-Proton Collisions

Alici

2022

Int J Theor Phys

View full text Add to dashboard Cite

In this study, we investigate anomalous flavour-changing neutral current (FCNC) interactions related to the top quark, particularly the t → qγ transition, within the Standard Model Effective Field Theory (SMEFT) framework. These rare processes are largely suppressed in the Standard Model (SM) and are strong indicators for new physics scenarios beyond the SM. In our study, we have analyzed the cross sections of the γq→tγ subprocess for two different center-of-mass energies, 17.3 TeV and 24.5 TeV, at the Future Circular Collider (FCC-µp) collider. Our results derived from simulations show that the branching ratios for these processes can be reduced to the order of 10 −5 . These values provide significantly tighter limits than the current experimental limits. In light of these findings, it can be stated that the FCC-µp collider offers significant potential for discovering new physics which represents a sensitivity improvement over the current experimental limits from CMS, enhancing sensitivity by approximately 30%.Moreover, it has been demonstrated that higher centre-of-mass energies and integrated luminosity values significantly enhance the discovery potential of these rare processes. Accordingly, the results indicate thatenergy colliders such as FCC-µp are of critical importance in the search for new physics and in the study of the role of the top quark in the context of flavour physics. As a result, by providing a comprehensive theoretical analysis, this study contributes to the importance of FCNC processes in the search for new physics beyond the Standard Model and will shed light on future experimental and phenomenological studies.

show abstract

Study of Top Quark FCNC

Cited by 8 publications

References 17 publications

Probing the anomalous tqgamma couplings in photon-proton collisions

Probing the anomalous tqgamma couplings in photon-proton collisions

Probing the anomaloustqγ couplings through single top production at the future lepton–hadron colliders

Probing the Anomalous tqgamma Couplings in Photon-Proton Collisions

Contact Info

Product

Resources

About