Search for a Supersymmetric Partner to the Top Quark in Final States with Jets and Missing Transverse Momentum at √s=7 TeV with the ATLAS Detector
A search for direct pair production of supersymmetric top squarks (t[superscript ~][subscript 1]) is presented, assuming the ˜t[subscript 1] decays into a top quark and the lightest supersymmetric particle, χ[superscript ~][subscript 1][superscript 0], and that both top quarks decay to purely hadron...
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
American Physical Society
2013
|
| Online Access: | http://hdl.handle.net/1721.1/77163 https://orcid.org/0000-0002-7586-7253 |
| Summary: | A search for direct pair production of supersymmetric top squarks (t[superscript ~][subscript 1]) is presented, assuming the ˜t[subscript 1] decays into a top quark and the lightest supersymmetric particle, χ[superscript ~][subscript 1][superscript 0], and that both top quarks decay to purely hadronic final states. A total of 16 (4) events are observed compared to a predicted standard model background of 13.5[subscript -3.6][superscript +3.7](4.4[subscript -1.3][superscript +1.7]) events in two signal regions based on ∫Ldt=4.7 fb[superscript -1] of pp collision data taken at √s=7 TeV with the ATLAS detector at the LHC. An exclusion region in the t˜ [subscript 1] versus χ~[subscript 1][superscript 0] mass plane is evaluated: 370<m[subscript t[subscript ˜ 1]]<465 GeV is excluded for mχ~[subscript 1][superscript 0]∼0 GeV while m[subscript t[subscript ~1]]=445 GeV is excluded for mχ[subscript ˜ 1][superscript 0]≤50 GeV. |
|---|