Search for down-type fourth generation quarks with the ATLAS detector in events with one lepton and hadronically decaying W bosons
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| Publication date | 2012 |
| Journal | Physical Review Letters |
| Article number | 032001 |
| Volume | Issue number | 109 | 3 |
| Number of pages | 19 |
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| Abstract | This Letter presents a search for pair production of heavy down-type quarks decaying via b′→Wt in the lepton+jets channel, as b′b¯′→W−tW+t¯→bb¯W+W−W+W−→l±νbb¯qq¯qq¯qq¯. 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 √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. |
| Document type | Article |
| Note | ATLAS Collaboration |
| Language | English |
| Published at | https://doi.org/10.1103/PhysRevLett.109.032001 |
| Downloads |
Search_for_down-type_fourth_generation_quarks.pdf
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