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- Miller, T. C., et al.
(författare)
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Particle astrophysics in antarctica
- 1996
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Ingår i: International School of Cosmic Ray Astrophysics: 10th Course: Toward the Millennium in Astrophysics: Problems and Prospects 16-26 Jun 1996. Erice, Italy. ; , s. 157-166
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Konferensbidrag (refereegranskat)
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- Bee, C. P., et al.
(författare)
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The CP-LEAR data acquisition system
- 1986
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Ingår i: Proceedings. - Geneva : CERN. ; , s. 179-184
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)
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7. |
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- Brenner, Richard, et al.
(författare)
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The ATLAS tau trigger and planned trigger efficiency studies with early data
- 2009
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Ingår i: Proceedings of CHarged2008. - Trieste : Proceedings of Science. ; , s. 1-7
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Konferensbidrag (refereegranskat)abstract
- The tau trigger system of the ATLAS detector has been developed to increase the sensitivity ofthe detector to the Higgs boson and searches for physics beyond the Standard Model. A trigger system split in three levels has been designed for hadronically decaying tau leptons optimized for efficiency and good background rejection. At the first level the trigger uses only information from the calorimeters while the other two levels include also information from the tracking. Both energy and shape variables for the hadronic tau jets are used in the trigger algorithms. The very intense QCD background, however, makes it a challenge to develop an efficient trigger with high purity at low transverse momentum. Thus the tau trigger is best used in combination with other trigger variables such as missing transverse energy or jets. Before the tau trigger can be used in searches, it has to be commissioned with data and the efficiency and background rejectionof QCD has to be studied in detail.
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