Search for new heavy particles decaying to ZZ→llll, lljj in pp̅ collisions at √s=1.96 [square root of s=1.96] TeV
We report on a search for anomalous production of Z boson pairs through a massive resonance decay in data corresponding to 2.5–2.9 fb-1 [fb superscript -1] of integrated luminosity in pp̅ collisions at √s=1.96 [square root of s=1.96] TeV using the CDF II detector at the Fermilab Tevatron. This ana...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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American Physical Society
2011
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| Online Access: | http://hdl.handle.net/1721.1/66191 https://orcid.org/0000-0002-6047-4211 |
| _version_ | 1826213533525737472 |
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| author | Gomez-Ceballos, Guillelmo Goncharov, Maxim Makhoul, Khaldoun Paus, Christoph M. E. Bauer, Gerry P |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Gomez-Ceballos, Guillelmo Goncharov, Maxim Makhoul, Khaldoun Paus, Christoph M. E. Bauer, Gerry P |
| author_sort | Gomez-Ceballos, Guillelmo |
| collection | MIT |
| description | We report on a search for anomalous production of Z boson pairs through a massive resonance decay in data corresponding to 2.5–2.9 fb-1 [fb superscript -1] of integrated luminosity in pp̅ collisions at √s=1.96 [square root of s=1.96] TeV using the CDF II detector at the Fermilab Tevatron. This analysis, with more data and channels where the Z bosons decay to muons or jets, supersedes the 1.1 fb-1 [fb superscript -1] four-electron channel result previously published by CDF. In order to maintain high efficiency for muons, we use a new forward tracking algorithm and muon identification requirements optimized for these high signal-to-background channels. Predicting the dominant backgrounds in each channel entirely from sideband data samples, we observe four-body invariant mass spectra above 300 GeV/c2 [GeV / c superscript 2] that are consistent with background. We set limits using the acceptance for a massive graviton resonance that are 7–20 times stronger than the previously published direct limits on resonant ZZ diboson production. |
| first_indexed | 2024-09-23T15:50:45Z |
| format | Article |
| id | mit-1721.1/66191 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T15:50:45Z |
| publishDate | 2011 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/661912023-02-26T07:51:33Z Search for new heavy particles decaying to ZZ→llll, lljj in pp̅ collisions at √s=1.96 [square root of s=1.96] TeV Gomez-Ceballos, Guillelmo Goncharov, Maxim Makhoul, Khaldoun Paus, Christoph M. E. Bauer, Gerry P Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Paus, Christoph M E Bauer, Gerry P. Gomez-Ceballos, Guillelmo Goncharov, Maxim Makhoul, Khaldoun Paus, Christoph M. E. We report on a search for anomalous production of Z boson pairs through a massive resonance decay in data corresponding to 2.5–2.9 fb-1 [fb superscript -1] of integrated luminosity in pp̅ collisions at √s=1.96 [square root of s=1.96] TeV using the CDF II detector at the Fermilab Tevatron. This analysis, with more data and channels where the Z bosons decay to muons or jets, supersedes the 1.1 fb-1 [fb superscript -1] four-electron channel result previously published by CDF. In order to maintain high efficiency for muons, we use a new forward tracking algorithm and muon identification requirements optimized for these high signal-to-background channels. Predicting the dominant backgrounds in each channel entirely from sideband data samples, we observe four-body invariant mass spectra above 300 GeV/c2 [GeV / c superscript 2] that are consistent with background. We set limits using the acceptance for a massive graviton resonance that are 7–20 times stronger than the previously published direct limits on resonant ZZ diboson production. United States. Dept. of Energy. National Science Foundation (U.S.) Alfred P. Sloan Foundation 2011-10-05T17:52:31Z 2011-10-05T17:52:31Z 2011-06 2011-02 Article http://purl.org/eprint/type/JournalArticle 1550-7998 1550-2368 http://hdl.handle.net/1721.1/66191 Aaltonen, T. et al. (CDF Collaboration) "Search for new heavy particles decaying to ZZ→llll, lljj in pp̅ collisions at √s=1.96 TeV" Phys. Rev. D 83, 112008 (2011) © 2011 American Physical Society https://orcid.org/0000-0002-6047-4211 en_US http://dx.doi.org/10.1103/PhysRevD.83.112008 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. application/pdf American Physical Society APS |
| spellingShingle | Gomez-Ceballos, Guillelmo Goncharov, Maxim Makhoul, Khaldoun Paus, Christoph M. E. Bauer, Gerry P Search for new heavy particles decaying to ZZ→llll, lljj in pp̅ collisions at √s=1.96 [square root of s=1.96] TeV |
| title | Search for new heavy particles decaying to ZZ→llll, lljj in pp̅ collisions at √s=1.96 [square root of s=1.96] TeV |
| title_full | Search for new heavy particles decaying to ZZ→llll, lljj in pp̅ collisions at √s=1.96 [square root of s=1.96] TeV |
| title_fullStr | Search for new heavy particles decaying to ZZ→llll, lljj in pp̅ collisions at √s=1.96 [square root of s=1.96] TeV |
| title_full_unstemmed | Search for new heavy particles decaying to ZZ→llll, lljj in pp̅ collisions at √s=1.96 [square root of s=1.96] TeV |
| title_short | Search for new heavy particles decaying to ZZ→llll, lljj in pp̅ collisions at √s=1.96 [square root of s=1.96] TeV |
| title_sort | search for new heavy particles decaying to zz llll lljj in pp collisions at √s 1 96 square root of s 1 96 tev |
| url | http://hdl.handle.net/1721.1/66191 https://orcid.org/0000-0002-6047-4211 |
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