Search for Down-Type Fourth Generation Quarks with the ATLAS Detector in Events with One Lepton and Hadronically Decaying Bosons
Journal Article
·
· Physical Review Letters
This Letter presents a search for pair production of heavy down-type quarks decaying via b'→Wt in the lepton+jets channel, as b'$$\bar{b}$$'→W-tW+$$\bar{t}$$→b$$\bar{b}$$W+W-W+W-→l±νb$$\bar{b}$$q$$\bar{q}$$q$$\bar{q}$$q$$\bar{q}$$. In addition to requiring exactly one lepton, large missing transverse momentum, and at least six jets, the invariant mass of nearby jet pairs is used to identify high transverse momentum W bosons. In data corresponding to an integrated luminosity of 1.04 fb-1 from pp collisions at $$\sqrt{s}$$=7 TeV recorded with the ATLAS detector, a heavy down-type quark with mass less than 480 GeV can be excluded at the 95% confidence level.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Contributing Organization:
- ATLAS Collaboration
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1075239
- Alternate ID(s):
- OSTI ID: 1523855
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Vol. 109 Journal Issue: 3; ISSN 0031-9007
- Publisher:
- American Physical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 39 works
Citation information provided by
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Web of Science
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