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: | English |
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American Physical Society
2018
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| Online Access: | http://hdl.handle.net/1721.1/113593 https://orcid.org/0000-0002-2406-8160 https://orcid.org/0000-0002-6809-7545 |
| _version_ | 1811095250360336384 |
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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 | 2024-09-23T16:14:00Z |
| format | Article |
| id | mit-1721.1/113593 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T16:14:00Z |
| publishDate | 2018 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/1135932022-10-02T07:11:24Z 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 Massachusetts Institute of Technology. Department of 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 (Contract DE-SC00012567) United States. Department of Energy (Contract DE-SC-00015476) Massachusetts Institute of Technology. Undergraduate Research Opportunities Program Massachusetts Institute of Technology. Charles E. Reed Faculty Initiative Fund 2018-02-12T19:26:45Z 2018-02-12T19:26:45Z 2017-09 2017-07 2017-11-14T22:45:32Z Article http://purl.org/eprint/type/JournalArticle 0031-9007 1079-7114 http://hdl.handle.net/1721.1/113593 Larkoski, Andrew, et al. “Exposing the QCD Splitting Function with CMS Open Data.” Physical Review Letters, vol. 119, no. 13, Sept. 2017. © 2017 American Physical Society https://orcid.org/0000-0002-2406-8160 https://orcid.org/0000-0002-6809-7545 en http://dx.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. American Physical Society application/pdf American Physical Society 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/1721.1/113593 https://orcid.org/0000-0002-2406-8160 https://orcid.org/0000-0002-6809-7545 |
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