Disentangling heavy flavor at colliders
We propose two new analysis strategies for studying charm and beauty quarks at colliders. The first strategy is aimed at testing the kinematics of heavy-flavor quarks within an identified jet. Here, we use the SoftDrop jet-declustering algorithm to identify two subjets within a large-radius jet, usi...
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| Format: | Article |
| Language: | English |
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American Physical Society
2017
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| Online Access: | http://hdl.handle.net/1721.1/112978 https://orcid.org/0000-0001-5534-1732 https://orcid.org/0000-0001-8285-3346 |
| _version_ | 1826213540377133056 |
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| author | Rodd, Nicholas L. Thaler, Jesse Ilten, Philip J Williams, Michael |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Rodd, Nicholas L. Thaler, Jesse Ilten, Philip J Williams, Michael |
| author_sort | Rodd, Nicholas L. |
| collection | MIT |
| description | We propose two new analysis strategies for studying charm and beauty quarks at colliders. The first strategy is aimed at testing the kinematics of heavy-flavor quarks within an identified jet. Here, we use the SoftDrop jet-declustering algorithm to identify two subjets within a large-radius jet, using subjet flavor tagging to test the heavy-quark splitting functions of QCD. For subjets containing a J/ψ or ϒ, this declustering technique can also help probe the mechanism for quarkonium production. The second strategy is aimed at isolating heavy-flavor production from gluon splitting. Here, we introduce a new FlavorCone algorithm, which smoothly interpolates from well-separated heavy-quark jets to the gluon-splitting regime where jets overlap. Because of its excellent ability to identify charm and beauty hadrons, the LHCb detector is ideally suited to pursue these strategies, though similar measurements should also be possible at ATLAS and CMS. Together, these SoftDrop and FlavorCone studies should clarify a number of aspects of heavy-flavor physics at colliders, and provide crucial information needed to improve heavy-flavor modeling in parton-shower generators. |
| first_indexed | 2024-09-23T15:50:55Z |
| format | Article |
| id | mit-1721.1/112978 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T15:50:55Z |
| publishDate | 2017 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/1129782022-10-02T04:33:16Z Disentangling heavy flavor at colliders Rodd, Nicholas L. Thaler, Jesse Ilten, Philip J Williams, Michael Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Ilten, Philip J Williams, Michael We propose two new analysis strategies for studying charm and beauty quarks at colliders. The first strategy is aimed at testing the kinematics of heavy-flavor quarks within an identified jet. Here, we use the SoftDrop jet-declustering algorithm to identify two subjets within a large-radius jet, using subjet flavor tagging to test the heavy-quark splitting functions of QCD. For subjets containing a J/ψ or ϒ, this declustering technique can also help probe the mechanism for quarkonium production. The second strategy is aimed at isolating heavy-flavor production from gluon splitting. Here, we introduce a new FlavorCone algorithm, which smoothly interpolates from well-separated heavy-quark jets to the gluon-splitting regime where jets overlap. Because of its excellent ability to identify charm and beauty hadrons, the LHCb detector is ideally suited to pursue these strategies, though similar measurements should also be possible at ATLAS and CMS. Together, these SoftDrop and FlavorCone studies should clarify a number of aspects of heavy-flavor physics at colliders, and provide crucial information needed to improve heavy-flavor modeling in parton-shower generators. National Science Foundation (U.S.) (Grant PHY-1607225) 2017-12-29T17:14:01Z 2017-12-29T17:14:01Z 2017-09 2017-04 2017-11-14T22:45:38Z Article http://purl.org/eprint/type/JournalArticle 2470-0010 2470-0029 http://hdl.handle.net/1721.1/112978 Ilten, Philip et al. "Disentangling heavy flavor at colliders." Physical Review D 96, 5 (September 2017): 054019 © 2017 American Physical Society https://orcid.org/0000-0001-5534-1732 https://orcid.org/0000-0001-8285-3346 en http://dx.doi.org/10.1103/PhysRevD.96.054019 Physical Review D 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 | Rodd, Nicholas L. Thaler, Jesse Ilten, Philip J Williams, Michael Disentangling heavy flavor at colliders |
| title | Disentangling heavy flavor at colliders |
| title_full | Disentangling heavy flavor at colliders |
| title_fullStr | Disentangling heavy flavor at colliders |
| title_full_unstemmed | Disentangling heavy flavor at colliders |
| title_short | Disentangling heavy flavor at colliders |
| title_sort | disentangling heavy flavor at colliders |
| url | http://hdl.handle.net/1721.1/112978 https://orcid.org/0000-0001-5534-1732 https://orcid.org/0000-0001-8285-3346 |
| work_keys_str_mv | AT roddnicholasl disentanglingheavyflavoratcolliders AT thalerjesse disentanglingheavyflavoratcolliders AT iltenphilipj disentanglingheavyflavoratcolliders AT williamsmichael disentanglingheavyflavoratcolliders |