Summing logarithms and factorization for massive quark initiated jets and the Pythia top quark mass
© Copyright owned by the author(s) under the terms of the Creative Commons. The most precise top quark mass measurements use kinematic reconstruction methods, determining the top mass parameter of a Monte Carlo event generator, mtMC. Due to the complicated interplay of hadronization and parton showe...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Sissa Medialab
2021
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| Online Access: | https://hdl.handle.net/1721.1/137273 |
| _version_ | 1826194172964503552 |
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| author | Hoang, Andre Butenschoen, Mathias Dehnadi, Bahmand Mateu, Vicent Preisser, Moritz Stewart, Iain W. |
| author_facet | Hoang, Andre Butenschoen, Mathias Dehnadi, Bahmand Mateu, Vicent Preisser, Moritz Stewart, Iain W. |
| author_sort | Hoang, Andre |
| collection | MIT |
| description | © Copyright owned by the author(s) under the terms of the Creative Commons. The most precise top quark mass measurements use kinematic reconstruction methods, determining the top mass parameter of a Monte Carlo event generator, mtMC. Due to the complicated interplay of hadronization and parton shower dynamics in Monte Carlo event generators, relating mtMC to field theory masses is a non-trivial task. In this talk we present a calibration procedure to determine this relation using hadron level QCD predictions for 2-Jettiness in e+e- annihilation, an observable which has kinematic top mass sensitivity and has a close relation to the invariant mass of the particles coming from the top decay. The theoretical ingredients of the QCD prediction are explained. Fitting e+e-2-Jettiness calculations at NLL/NNLL order to PYTHIA 8.205, we find that mtMC agrees with the MSR mass at the scale 1 GeV within uncertainties, mtMC≃ mtMCmt, IGeVMSR, but differs from the pole mass by 900/600MeV. |
| first_indexed | 2024-09-23T09:52:04Z |
| format | Article |
| id | mit-1721.1/137273 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T09:52:04Z |
| publishDate | 2021 |
| publisher | Sissa Medialab |
| record_format | dspace |
| spelling | mit-1721.1/1372732021-11-04T03:34:19Z Summing logarithms and factorization for massive quark initiated jets and the Pythia top quark mass Hoang, Andre Butenschoen, Mathias Dehnadi, Bahmand Mateu, Vicent Preisser, Moritz Stewart, Iain W. © Copyright owned by the author(s) under the terms of the Creative Commons. The most precise top quark mass measurements use kinematic reconstruction methods, determining the top mass parameter of a Monte Carlo event generator, mtMC. Due to the complicated interplay of hadronization and parton shower dynamics in Monte Carlo event generators, relating mtMC to field theory masses is a non-trivial task. In this talk we present a calibration procedure to determine this relation using hadron level QCD predictions for 2-Jettiness in e+e- annihilation, an observable which has kinematic top mass sensitivity and has a close relation to the invariant mass of the particles coming from the top decay. The theoretical ingredients of the QCD prediction are explained. Fitting e+e-2-Jettiness calculations at NLL/NNLL order to PYTHIA 8.205, we find that mtMC agrees with the MSR mass at the scale 1 GeV within uncertainties, mtMC≃ mtMCmt, IGeVMSR, but differs from the pole mass by 900/600MeV. 2021-11-03T17:57:57Z 2021-11-03T17:57:57Z 2016-10-06 2019-04-29T19:44:08Z Article http://purl.org/eprint/type/ConferencePaper https://hdl.handle.net/1721.1/137273 Hoang, Andre, Butenschoen, Mathias, Dehnadi, Bahmand, Mateu, Vicent, Preisser, Moritz et al. 2016. "Summing logarithms and factorization for massive quark initiated jets and the Pythia top quark mass." en 10.22323/1.260.0066 Creative Commons Attribution-NonCommercial-NoDerivs License http://creativecommons.org/licenses/by-nc-nd/4.0/ application/pdf Sissa Medialab Proceedings of Science |
| spellingShingle | Hoang, Andre Butenschoen, Mathias Dehnadi, Bahmand Mateu, Vicent Preisser, Moritz Stewart, Iain W. Summing logarithms and factorization for massive quark initiated jets and the Pythia top quark mass |
| title | Summing logarithms and factorization for massive quark initiated jets and the Pythia top quark mass |
| title_full | Summing logarithms and factorization for massive quark initiated jets and the Pythia top quark mass |
| title_fullStr | Summing logarithms and factorization for massive quark initiated jets and the Pythia top quark mass |
| title_full_unstemmed | Summing logarithms and factorization for massive quark initiated jets and the Pythia top quark mass |
| title_short | Summing logarithms and factorization for massive quark initiated jets and the Pythia top quark mass |
| title_sort | summing logarithms and factorization for massive quark initiated jets and the pythia top quark mass |
| url | https://hdl.handle.net/1721.1/137273 |
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