Simplified likelihoods using linearized systematic uncertainties
Abstract This paper presents a simplified likelihood framework designed to facilitate the reuse, reinterpretation and combination of LHC experimental results. The framework is based on the same underlying structure as the widely used HistFactory format, but with systematic uncertainties considered a...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-04-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP04(2023)084 |
| _version_ | 1797769747872350208 |
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| author | N. Berger |
| author_facet | N. Berger |
| author_sort | N. Berger |
| collection | DOAJ |
| description | Abstract This paper presents a simplified likelihood framework designed to facilitate the reuse, reinterpretation and combination of LHC experimental results. The framework is based on the same underlying structure as the widely used HistFactory format, but with systematic uncertainties considered at linear order only. This simplification leads to large gains in computing performance for the evaluation and maximization of the likelihood function, compared to the original statistical model. The framework accurately describes non-Gaussian effects from low event counts, as well as correlated uncertainties in combinations. While primarily targeted towards binned descriptions of the data, it is also applicable to unbinned models. |
| first_indexed | 2024-03-12T21:13:28Z |
| format | Article |
| id | doaj.art-f63763800bfb4ad68f155c7271c3a47b |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-03-12T21:13:28Z |
| publishDate | 2023-04-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-f63763800bfb4ad68f155c7271c3a47b2023-07-30T11:03:37ZengSpringerOpenJournal of High Energy Physics1029-84792023-04-012023412010.1007/JHEP04(2023)084Simplified likelihoods using linearized systematic uncertaintiesN. Berger0LAPP, Université Savoie Mont Blanc, CNRS/IN2P3Abstract This paper presents a simplified likelihood framework designed to facilitate the reuse, reinterpretation and combination of LHC experimental results. The framework is based on the same underlying structure as the widely used HistFactory format, but with systematic uncertainties considered at linear order only. This simplification leads to large gains in computing performance for the evaluation and maximization of the likelihood function, compared to the original statistical model. The framework accurately describes non-Gaussian effects from low event counts, as well as correlated uncertainties in combinations. While primarily targeted towards binned descriptions of the data, it is also applicable to unbinned models.https://doi.org/10.1007/JHEP04(2023)084Beyond Standard ModelHiggs PhysicsSupersymmetryHadron-Hadron Scattering |
| spellingShingle | N. Berger Simplified likelihoods using linearized systematic uncertainties Journal of High Energy Physics Beyond Standard Model Higgs Physics Supersymmetry Hadron-Hadron Scattering |
| title | Simplified likelihoods using linearized systematic uncertainties |
| title_full | Simplified likelihoods using linearized systematic uncertainties |
| title_fullStr | Simplified likelihoods using linearized systematic uncertainties |
| title_full_unstemmed | Simplified likelihoods using linearized systematic uncertainties |
| title_short | Simplified likelihoods using linearized systematic uncertainties |
| title_sort | simplified likelihoods using linearized systematic uncertainties |
| topic | Beyond Standard Model Higgs Physics Supersymmetry Hadron-Hadron Scattering |
| url | https://doi.org/10.1007/JHEP04(2023)084 |
| work_keys_str_mv | AT nberger simplifiedlikelihoodsusinglinearizedsystematicuncertainties |