Search for Heavy Bottomlike Quarks Decaying to an Electron or Muon and Jets in pp̅ Collisions at √s=1.96 TeV
We report the most sensitive direct search for pair production of fourth-generation bottomlike chiral quarks (b′)[(b prime)] each decaying promptly to tW. We search for an excess of events with an electron or muon, at least five jets (one identified as due to a b or c quark), and an imbalance of tra...
| 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/1721.1/65334 https://orcid.org/0000-0002-6047-4211 |
| _version_ | 1811092669132177408 |
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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 the most sensitive direct search for pair production of fourth-generation bottomlike chiral quarks (b′)[(b prime)] each decaying promptly to tW. We search for an excess of events with an electron or muon, at least five jets (one identified as due to a b or c quark), and an imbalance of transverse momentum by using data from pp̅ collisions collected by the CDF II detector at Fermilab with an integrated luminosity of 4.8 fb-1 [fb superscript -1]. We observe events consistent with background expectation, calculate upper limits on the b′ [b prime] pair-production cross section (σbb̅ ′≲30 fb for mb′>375 GeV/c2) [delta subscript b b overstrike prime ≲ 30 fb for m subscript b prime > 375 GeV / c superscript 2)], and exclude mb′<372 GeV/c2 [m subscript b prime < 372 GeV / c superscript 2] at 95% confidence level assuming a 100% branching ratio of b′ [b prime] to tW. |
| first_indexed | 2024-09-23T15:21:47Z |
| format | Article |
| id | mit-1721.1/65334 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T15:21:47Z |
| publishDate | 2011 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/653342023-02-26T05:59:55Z Search for Heavy Bottomlike Quarks Decaying to an Electron or Muon and Jets in pp̅ Collisions at √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 the most sensitive direct search for pair production of fourth-generation bottomlike chiral quarks (b′)[(b prime)] each decaying promptly to tW. We search for an excess of events with an electron or muon, at least five jets (one identified as due to a b or c quark), and an imbalance of transverse momentum by using data from pp̅ collisions collected by the CDF II detector at Fermilab with an integrated luminosity of 4.8 fb-1 [fb superscript -1]. We observe events consistent with background expectation, calculate upper limits on the b′ [b prime] pair-production cross section (σbb̅ ′≲30 fb for mb′>375 GeV/c2) [delta subscript b b overstrike prime ≲ 30 fb for m subscript b prime > 375 GeV / c superscript 2)], and exclude mb′<372 GeV/c2 [m subscript b prime < 372 GeV / c superscript 2] at 95% confidence level assuming a 100% branching ratio of b′ [b prime] to tW. United States. Dept. of Energy National Science Foundation (U.S.) Alfred P. Sloan Foundation 2011-08-18T20:34:17Z 2011-08-18T20:34:17Z 2011-04 2011-01 Article http://purl.org/eprint/type/JournalArticle 0031-9007 http://hdl.handle.net/1721.1/65334 aaltonen, T. et al. "Search for Heavy Bottomlike Quarks Decaying to an Electron or Muon and Jets in pp̅ Collisions at √s=1.96 [square root = 1.96] TeV" Phys. Rev. Lett. v.106, 141803 (2011) © 2011 American Physical Society https://orcid.org/0000-0002-6047-4211 en_US http://dx.doi.org/10.1103/PhysRevLett.106.141803 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 APS |
| spellingShingle | Gomez-Ceballos, Guillelmo Goncharov, Maxim Makhoul, Khaldoun Paus, Christoph M. E. Bauer, Gerry P Search for Heavy Bottomlike Quarks Decaying to an Electron or Muon and Jets in pp̅ Collisions at √s=1.96 TeV |
| title | Search for Heavy Bottomlike Quarks Decaying to an Electron or Muon and Jets in pp̅ Collisions at √s=1.96 TeV |
| title_full | Search for Heavy Bottomlike Quarks Decaying to an Electron or Muon and Jets in pp̅ Collisions at √s=1.96 TeV |
| title_fullStr | Search for Heavy Bottomlike Quarks Decaying to an Electron or Muon and Jets in pp̅ Collisions at √s=1.96 TeV |
| title_full_unstemmed | Search for Heavy Bottomlike Quarks Decaying to an Electron or Muon and Jets in pp̅ Collisions at √s=1.96 TeV |
| title_short | Search for Heavy Bottomlike Quarks Decaying to an Electron or Muon and Jets in pp̅ Collisions at √s=1.96 TeV |
| title_sort | search for heavy bottomlike quarks decaying to an electron or muon and jets in pp collisions at √s 1 96 tev |
| url | http://hdl.handle.net/1721.1/65334 https://orcid.org/0000-0002-6047-4211 |
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