期刊
PHYSICAL REVIEW LETTERS
卷 119, 期 13, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.119.132003
关键词
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资金
- MIT Charles E. Reed Faculty Initiatives Fund
- U.S. Department of Energy (DOE) [DE-SC-00012567, DE-SC-00015476]
- U.S. National Science Foundation, the LHC Theory Initiative [PHY-1419008, PHY-0969510]
- U.S. National Science Foundation [PHY-1619867]
- MIT Undergraduate Research Opportunities Program
- Direct For Mathematical & Physical Scien
- Division Of Physics [1619867] Funding Source: National Science Foundation
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.
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