Parton showers beyond leading logarithmic accuracy
Parton showers are among the most widely used tools in collider physics. Despite their key importance, none so far have been able to demonstrate accuracy beyond a basic level known as leading logarithmic order, with ensuing limitations across a broad spectrum of physics applications. In this Letter,...
| Main Authors: | , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
American Physical Society
2020
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| _version_ | 1797059093131689984 |
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| author | Dasgupta, M Dreyer, FA Hamilton, K Monni, PF Salam, GP Soyez, G |
| author_facet | Dasgupta, M Dreyer, FA Hamilton, K Monni, PF Salam, GP Soyez, G |
| author_sort | Dasgupta, M |
| collection | OXFORD |
| description | Parton showers are among the most widely used tools in collider physics. Despite their key importance, none so far have been able to demonstrate accuracy beyond a basic level known as leading logarithmic order, with ensuing limitations across a broad spectrum of physics applications. In this Letter, we propose criteria for showers to be considered next-to-leading logarithmic accurate. We then introduce new classes of shower, for final-state radiation, that satisfy the main elements of these criteria in the widely used large-NC limit. As a proof of concept, we demonstrate these showers’ agreement with all-order analytical next-to-leading logarithmic calculations for a range of observables, something never so far achieved for any parton shower. |
| first_indexed | 2024-03-06T19:59:23Z |
| format | Journal article |
| id | oxford-uuid:26bd03e9-1804-45ca-9001-b0600ef08820 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T19:59:23Z |
| publishDate | 2020 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | oxford-uuid:26bd03e9-1804-45ca-9001-b0600ef088202022-03-26T12:02:53ZParton showers beyond leading logarithmic accuracyJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:26bd03e9-1804-45ca-9001-b0600ef08820EnglishSymplectic ElementsAmerican Physical Society2020Dasgupta, MDreyer, FAHamilton, KMonni, PFSalam, GPSoyez, GParton showers are among the most widely used tools in collider physics. Despite their key importance, none so far have been able to demonstrate accuracy beyond a basic level known as leading logarithmic order, with ensuing limitations across a broad spectrum of physics applications. In this Letter, we propose criteria for showers to be considered next-to-leading logarithmic accurate. We then introduce new classes of shower, for final-state radiation, that satisfy the main elements of these criteria in the widely used large-NC limit. As a proof of concept, we demonstrate these showers’ agreement with all-order analytical next-to-leading logarithmic calculations for a range of observables, something never so far achieved for any parton shower. |
| spellingShingle | Dasgupta, M Dreyer, FA Hamilton, K Monni, PF Salam, GP Soyez, G Parton showers beyond leading logarithmic accuracy |
| title | Parton showers beyond leading logarithmic accuracy |
| title_full | Parton showers beyond leading logarithmic accuracy |
| title_fullStr | Parton showers beyond leading logarithmic accuracy |
| title_full_unstemmed | Parton showers beyond leading logarithmic accuracy |
| title_short | Parton showers beyond leading logarithmic accuracy |
| title_sort | parton showers beyond leading logarithmic accuracy |
| work_keys_str_mv | AT dasguptam partonshowersbeyondleadinglogarithmicaccuracy AT dreyerfa partonshowersbeyondleadinglogarithmicaccuracy AT hamiltonk partonshowersbeyondleadinglogarithmicaccuracy AT monnipf partonshowersbeyondleadinglogarithmicaccuracy AT salamgp partonshowersbeyondleadinglogarithmicaccuracy AT soyezg partonshowersbeyondleadinglogarithmicaccuracy |