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Search for Scalar Top Quarks and Higgsino-Like Neutralinos: SUSY Hunting With a ¿Soft¿ Lepton at the LHC

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143,97 
Įprasta kaina: 169,38 
-15% su kodu: ENG15
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Akcija baigiasi: 2025-03-03
-15% su kodu: ENG15
143,97 
Įprasta kaina: 169,38 
-15% su kodu: ENG15
Kupono kodas: ENG15
Akcija baigiasi: 2025-03-03
-15% su kodu: ENG15
2025-02-28 169.3800 InStock
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Knygos aprašymas

This book reports a search for theoretically natural supersymmetry (SUSY) at the Large Hadron Collider (LHC). The data collected with the ATLAS detector in 2012 corresponding to 20 /fb of an integrated luminosity have been analyzed for stop pair production in proton¿proton collisions at a center-of-mass energy of 8 TeV at the Large Hadron Collider (LHC) in the scenario of the higgsino-like neutralino. The author focuses on stop decaying into a bottom quark and chargino. In the scenario of the higgsino-like neutralino, the mass difference between charginos and neutralinos (¿m) is expected to be small, and observable final-state particles are likely to have low-momentum (soft). The author develops a dedicated analysis with a soft lepton as a probe of particles from chargino decay, which suppresses the large amount of backgrounds. As a result of the analysis, no significant SUSY signal is observed. The 95% confidence-level exclusion limits are set to masses of stop and neutralino assuming ¿m = 20 GeV. The region with ¿M (the mass difference between stop and neutralino) 120 GeV up to 600 GeV of stop mass with neutralino mass of less than 280 GeV. The author clearly shows very few remaining parameter spaces for light stop (e.g., topology of stop decay is extremely similar to the SM top quark) by combining his results and previous ATLAS analyses. His results provide a strong constraint to searches for new physics in the future.

Informacija

Autorius: Takuya Nobe
Serija: Springer Theses
Leidėjas: Springer Nature Singapore
Išleidimo metai: 2019
Knygos puslapių skaičius: 236
ISBN-10: 9811090610
ISBN-13: 9789811090615
Formatas: 235 x 155 x 13 mm. Knyga minkštu viršeliu
Kalba: Anglų

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