Studying Same-Sign Top Pair Production through Top-Higgs FCNC Interactions at the HL-LHC
We investigate the potential of the HL-LHC for discovering new physics effects via the same-sign top pair signatures. We focus on the semileptonic (electron and muon) decay of the top quarks and study the reach for a simplified model approach where top quark flavor changing could occur through a neu...
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | Advances in High Energy Physics |
| Online Access: | http://dx.doi.org/10.1155/2022/4299254 |
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| _version_ | 1832552404014333952 |
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| author | O. M. Ozsimsek V. Ari O. Cakir |
| author_facet | O. M. Ozsimsek V. Ari O. Cakir |
| author_sort | O. M. Ozsimsek |
| collection | DOAJ |
| description | We investigate the potential of the HL-LHC for discovering new physics effects via the same-sign top pair signatures. We focus on the semileptonic (electron and muon) decay of the top quarks and study the reach for a simplified model approach where top quark flavor changing could occur through a neutral scalar exchange. A relatively smaller background contribution and clean signature are the advantages of the leptonic decay mode of the same-sign W bosons in the same-sign production processes of top quark pairs. Assuming the FCNC between top quark, up-type quark, and scalar boson from the new physics interactions, the branchings could be excluded of the order O10−4. We use angular observables of the same-sign lepton pairs and the top quark kinematics in the process which provide the possibility of separation of new physics signal from the SM backgrounds using machine-learning techniques. We find that the same-sign top quark pair production is quite capable of testing the top-Higgs FCNCs at the HL-LHC. |
| format | Article |
| id | doaj-art-fab805e1283740718bdc32f43a0f6b88 |
| institution | Kabale University |
| issn | 1687-7365 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in High Energy Physics |
| spelling | doaj-art-fab805e1283740718bdc32f43a0f6b882025-02-03T05:58:49ZengWileyAdvances in High Energy Physics1687-73652022-01-01202210.1155/2022/4299254Studying Same-Sign Top Pair Production through Top-Higgs FCNC Interactions at the HL-LHCO. M. Ozsimsek0V. Ari1O. Cakir2Hacettepe UniversityDepartment of PhysicsDepartment of PhysicsWe investigate the potential of the HL-LHC for discovering new physics effects via the same-sign top pair signatures. We focus on the semileptonic (electron and muon) decay of the top quarks and study the reach for a simplified model approach where top quark flavor changing could occur through a neutral scalar exchange. A relatively smaller background contribution and clean signature are the advantages of the leptonic decay mode of the same-sign W bosons in the same-sign production processes of top quark pairs. Assuming the FCNC between top quark, up-type quark, and scalar boson from the new physics interactions, the branchings could be excluded of the order O10−4. We use angular observables of the same-sign lepton pairs and the top quark kinematics in the process which provide the possibility of separation of new physics signal from the SM backgrounds using machine-learning techniques. We find that the same-sign top quark pair production is quite capable of testing the top-Higgs FCNCs at the HL-LHC.http://dx.doi.org/10.1155/2022/4299254 |
| spellingShingle | O. M. Ozsimsek V. Ari O. Cakir Studying Same-Sign Top Pair Production through Top-Higgs FCNC Interactions at the HL-LHC Advances in High Energy Physics |
| title | Studying Same-Sign Top Pair Production through Top-Higgs FCNC Interactions at the HL-LHC |
| title_full | Studying Same-Sign Top Pair Production through Top-Higgs FCNC Interactions at the HL-LHC |
| title_fullStr | Studying Same-Sign Top Pair Production through Top-Higgs FCNC Interactions at the HL-LHC |
| title_full_unstemmed | Studying Same-Sign Top Pair Production through Top-Higgs FCNC Interactions at the HL-LHC |
| title_short | Studying Same-Sign Top Pair Production through Top-Higgs FCNC Interactions at the HL-LHC |
| title_sort | studying same sign top pair production through top higgs fcnc interactions at the hl lhc |
| url | http://dx.doi.org/10.1155/2022/4299254 |
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