Exposing the QCD Splitting Function with CMS Open Data
The splitting function is a universal property of quantum chromodynamics (QCD) which describes how energy is shared between partons. Despite its ubiquitous appearance in many QCD calculations, the splitting function cannot be measured directly, since it always appears multiplied by a collinear singu...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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American Physical Society
2017
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| Online Access: | http://hdl.handle.net/1721.1/111834 https://orcid.org/0000-0002-2406-8160 https://orcid.org/0000-0002-6809-7545 |
| _version_ | 1811090837909536768 |
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| author | Larkoski, Andrew Marzani, Simone Thaler, Jesse Tripathee, Aashish Xue, Wei |
| author2 | Massachusetts Institute of Technology. Center for Theoretical Physics |
| author_facet | Massachusetts Institute of Technology. Center for Theoretical Physics Larkoski, Andrew Marzani, Simone Thaler, Jesse Tripathee, Aashish Xue, Wei |
| author_sort | Larkoski, Andrew |
| collection | MIT |
| description | The splitting function is a universal property of quantum chromodynamics (QCD) which describes how energy is shared between partons. Despite its ubiquitous appearance in many QCD calculations, the splitting function cannot be measured directly, since it always appears multiplied by a collinear singularity factor. Recently, however, a new jet substructure observable was introduced which asymptotes to the splitting function for sufficiently high jet energies. This provides a way to expose the splitting function through jet substructure measurements at the Large Hadron Collider. In this Letter, we use public data released by the CMS experiment to study the two-prong substructure of jets and test the 1→2 splitting function of QCD. To our knowledge, this is the first ever physics analysis based on the CMS Open Data. |
| first_indexed | 2024-09-23T14:52:45Z |
| format | Article |
| id | mit-1721.1/111834 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T14:52:45Z |
| publishDate | 2017 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/1118342022-10-01T23:06:30Z Exposing the QCD Splitting Function with CMS Open Data Larkoski, Andrew Marzani, Simone Thaler, Jesse Tripathee, Aashish Xue, Wei Massachusetts Institute of Technology. Center for Theoretical Physics Thaler, Jesse Tripathee, Aashish Xue, Wei The splitting function is a universal property of quantum chromodynamics (QCD) which describes how energy is shared between partons. Despite its ubiquitous appearance in many QCD calculations, the splitting function cannot be measured directly, since it always appears multiplied by a collinear singularity factor. Recently, however, a new jet substructure observable was introduced which asymptotes to the splitting function for sufficiently high jet energies. This provides a way to expose the splitting function through jet substructure measurements at the Large Hadron Collider. In this Letter, we use public data released by the CMS experiment to study the two-prong substructure of jets and test the 1→2 splitting function of QCD. To our knowledge, this is the first ever physics analysis based on the CMS Open Data. United States. Department of Energy (Grant DE-SC- 00012567) United States. Department of Energy (Grant DE-SC-00015476) 2017-10-11T11:14:14Z 2017-10-11T11:14:14Z 2017-09 2017-07 Article http://purl.org/eprint/type/JournalArticle 0031-9007 1079-7114 http://hdl.handle.net/1721.1/111834 Larkoski, Andrew et al. “Exposing the QCD Splitting Function with CMS Open Data.” Physical Review Letters 119, 13 (September 2017): 132003 © 2017 American Physical Society https://orcid.org/0000-0002-2406-8160 https://orcid.org/0000-0002-6809-7545 en_US https://doi.org/10.1103/PhysRevLett.119.132003 Physical Review Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society |
| spellingShingle | Larkoski, Andrew Marzani, Simone Thaler, Jesse Tripathee, Aashish Xue, Wei Exposing the QCD Splitting Function with CMS Open Data |
| title | Exposing the QCD Splitting Function with CMS Open Data |
| title_full | Exposing the QCD Splitting Function with CMS Open Data |
| title_fullStr | Exposing the QCD Splitting Function with CMS Open Data |
| title_full_unstemmed | Exposing the QCD Splitting Function with CMS Open Data |
| title_short | Exposing the QCD Splitting Function with CMS Open Data |
| title_sort | exposing the qcd splitting function with cms open data |
| url | http://hdl.handle.net/1721.1/111834 https://orcid.org/0000-0002-2406-8160 https://orcid.org/0000-0002-6809-7545 |
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