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Search for Anomalous Missing ET in tt Events
We present a search for anomalous missing transverse energy in the lepton+jets tt final state. Such a phenomenon can arise from a number of Standard Model extensions, but we focus here on a search for a pair-produced top partner decaying to a top quark and a long lived neutral particle which escapes...
| Autor principal: | |
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| Lenguaje: | eng |
| Publicado: |
2011
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| Materias: | |
| Acceso en línea: | http://cds.cern.ch/record/1337786 |
| _version_ | 1780921840671129600 |
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| author | The ATLAS collaboration |
| author_facet | The ATLAS collaboration |
| author_sort | The ATLAS collaboration |
| collection | CERN |
| description | We present a search for anomalous missing transverse energy in the lepton+jets tt final state. Such a phenomenon can arise from a number of Standard Model extensions, but we focus here on a search for a pair-produced top partner decaying to a top quark and a long lived neutral particle which escapes undetected. In a sample of 35.3 pb−1, we establish the first limits from the LHC on the mass of such a particle, excluding m(T)<300 GeV for a neutral particle mass of 10 GeV and m(T)<275 GeV for a neutral particle mass of 50 GeV with 95% confidence. |
| id | cern-1337786 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2011 |
| record_format | invenio |
| spelling | cern-13377862021-04-18T19:37:04Zhttp://cds.cern.ch/record/1337786engThe ATLAS collaborationSearch for Anomalous Missing ET in tt EventsDetectors and Experimental TechniquesWe present a search for anomalous missing transverse energy in the lepton+jets tt final state. Such a phenomenon can arise from a number of Standard Model extensions, but we focus here on a search for a pair-produced top partner decaying to a top quark and a long lived neutral particle which escapes undetected. In a sample of 35.3 pb−1, we establish the first limits from the LHC on the mass of such a particle, excluding m(T)<300 GeV for a neutral particle mass of 10 GeV and m(T)<275 GeV for a neutral particle mass of 50 GeV with 95% confidence.ATLAS-CONF-2011-036oai:cds.cern.ch:13377862011-03-23 |
| spellingShingle | Detectors and Experimental Techniques The ATLAS collaboration Search for Anomalous Missing ET in tt Events |
| title | Search for Anomalous Missing ET in tt Events |
| title_full | Search for Anomalous Missing ET in tt Events |
| title_fullStr | Search for Anomalous Missing ET in tt Events |
| title_full_unstemmed | Search for Anomalous Missing ET in tt Events |
| title_short | Search for Anomalous Missing ET in tt Events |
| title_sort | search for anomalous missing et in tt events |
| topic | Detectors and Experimental Techniques |
| url | http://cds.cern.ch/record/1337786 |
| work_keys_str_mv | AT theatlascollaboration searchforanomalousmissingetinttevents |