Jets with electrons from boosted top quarks
Abstract We propose a method to identify jets consisting of all the visible remnants of a boosted top quark decaying semileptonically with an electron in the final state. An overlap of electron shower with the b quark initiated shower, and the large nontrivial energy-momentum carried by the invisibl...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2020-01-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP01(2020)170 |
| _version_ | 1819176610118500352 |
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| author | Suman Chatterjee Rohini Godbole Tuhin S. Roy |
| author_facet | Suman Chatterjee Rohini Godbole Tuhin S. Roy |
| author_sort | Suman Chatterjee |
| collection | DOAJ |
| description | Abstract We propose a method to identify jets consisting of all the visible remnants of a boosted top quark decaying semileptonically with an electron in the final state. An overlap of electron shower with the b quark initiated shower, and the large nontrivial energy-momentum carried by the invisible neutrino in the top quark decay are the two obstacles to achieving this aim. Our method uses the distribution of energy in different parts of the detector to identify a jet containing an energetic electron, involves use of substructure of the jet to determine the momentum associated with the electron and then completes the identification of top jet with the construction of new variables which would reflect the top quark decay kinematics. The last part involves an ansatz of the existence of a massless, invisible four-momentum roughly collimated with the electron, whose four- momentum when combined with that of the the electron and the full jet, reconstructs to the W boson and the top quark respectively. We demonstrate the efficacy of this proposal using simulated data and show that our method not only reduces the backgrounds from light flavor jets, b jets from QCD, and hadronic top jets, it can also tell apart jets rich in electrons but not due to top quark decays. |
| first_indexed | 2024-12-22T21:13:30Z |
| format | Article |
| id | doaj.art-d1f9149a6882477da370d5931244eb14 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-22T21:13:30Z |
| publishDate | 2020-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-d1f9149a6882477da370d5931244eb142022-12-21T18:12:27ZengSpringerOpenJournal of High Energy Physics1029-84792020-01-012020112610.1007/JHEP01(2020)170Jets with electrons from boosted top quarksSuman Chatterjee0Rohini Godbole1Tuhin S. Roy2Department of High Energy Physics, Tata Institute of Fundamental ResearchCenter for High Energy Physics, Indian Institute of ScienceDepartment of Theoretical Physics, Tata Institute of Fundamental ResearchAbstract We propose a method to identify jets consisting of all the visible remnants of a boosted top quark decaying semileptonically with an electron in the final state. An overlap of electron shower with the b quark initiated shower, and the large nontrivial energy-momentum carried by the invisible neutrino in the top quark decay are the two obstacles to achieving this aim. Our method uses the distribution of energy in different parts of the detector to identify a jet containing an energetic electron, involves use of substructure of the jet to determine the momentum associated with the electron and then completes the identification of top jet with the construction of new variables which would reflect the top quark decay kinematics. The last part involves an ansatz of the existence of a massless, invisible four-momentum roughly collimated with the electron, whose four- momentum when combined with that of the the electron and the full jet, reconstructs to the W boson and the top quark respectively. We demonstrate the efficacy of this proposal using simulated data and show that our method not only reduces the backgrounds from light flavor jets, b jets from QCD, and hadronic top jets, it can also tell apart jets rich in electrons but not due to top quark decays.https://doi.org/10.1007/JHEP01(2020)170Jet substructureHadron-Hadron scattering (experiments)Top physicsElectroweak interactionBeyond Standard Model |
| spellingShingle | Suman Chatterjee Rohini Godbole Tuhin S. Roy Jets with electrons from boosted top quarks Journal of High Energy Physics Jet substructure Hadron-Hadron scattering (experiments) Top physics Electroweak interaction Beyond Standard Model |
| title | Jets with electrons from boosted top quarks |
| title_full | Jets with electrons from boosted top quarks |
| title_fullStr | Jets with electrons from boosted top quarks |
| title_full_unstemmed | Jets with electrons from boosted top quarks |
| title_short | Jets with electrons from boosted top quarks |
| title_sort | jets with electrons from boosted top quarks |
| topic | Jet substructure Hadron-Hadron scattering (experiments) Top physics Electroweak interaction Beyond Standard Model |
| url | https://doi.org/10.1007/JHEP01(2020)170 |
| work_keys_str_mv | AT sumanchatterjee jetswithelectronsfromboostedtopquarks AT rohinigodbole jetswithelectronsfromboostedtopquarks AT tuhinsroy jetswithelectronsfromboostedtopquarks |