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- Abdallah et al., DELPHI Collaboration: J, et al.
(författare)
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Study of double-tagged γγ events at LEPII
- 2006
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Ingår i: European Physical Journal C. - : Springer Science and Business Media LLC. - 1434-6044 .- 1434-6052. ; 46:3, s. 559-568
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Tidskriftsartikel (refereegranskat)
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- Berntzon, Lisa, 1972-
(författare)
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Studies of Heavy Baryons in DELPHI and Radiation Monitoring in DØ
- 2004
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Between the years 1992 and 1995 about 3.5 million hadronic Z decays were collected by the DELPHI detector at CERN. This data has been used to measure the production and lifetime of the beauty strange baryon Ξb,in the inclusive decay channel Ξb →Ξ-ℓ- X.The Ξ- baryon was reconstructed through the decay Ξ- → Λ π-, usinga constrained fit method for cascade decays. An iterativediscriminant analysis was used for the Ξb selection.A search for the Ξb baryon was also performed usingan alternative method of reconstructing the Ξ- baryon.A measurement of the production of the charmed strange baryon Ξc in the decay channel Ξc → Ξ-π+ using the same data is also presented.The radiation monitoring system of the Silicon Microstrip Tracker in the DØ detector is studied and used to estimate the radiation dose received by the Silicon detectorduring normal running conditions of the TeVatron accelerator.
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| 7. |
- Åsman, Barbro, et al.
(författare)
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Search for charged Higgs bosons : combined results using LEP data
- 2013
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Ingår i: European Physical Journal C. - : Springer Science and Business Media LLC. - 1434-6044 .- 1434-6052. ; 73:7
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Tidskriftsartikel (refereegranskat)abstract
- The four LEP collaborations, ALEPH, DELPHI, L3 and OPAL, have searched for pair-produced charged Higgs bosons in the framework of Two Higgs Doublet Models (2HDMs). The data of the four experiments have been statistically combined. The results are interpreted within the 2HDM for Type I and Type II benchmark scenarios. No statistically significant excess has been observed when compared to the Standard Model background prediction, and the combined LEP data exclude large regions of the model parameter space. Charged Higgs bosons with mass below 80 GeV/c(2) (Type II scenario) or 72.5 GeV/c(2) (Type I scenario, for pseudo-scalar masses above 12 GeV/c(2)) are excluded at the 95 % confidence level.
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