Electroweak Gauginos with Highly Boosted Hadronically Decaying Bosons at the LHC: Springer Theses
Autor Yuta Okazakien Limba Engleză Paperback – 3 ian 2024
This book presents a search for electroweakinos—the superpartners of the SM electroweak bosons—such as charginos and neutralinos using data at the LHC collected by the ATLAS detector. Pair-produced electroweakinos decay into the light ones and SM bosons (W/Z/h), and with the large mass difference between the heavy and light electroweakinos, the SM bosons have high momenta. In a fully hadronic final state, quarks decayed from the bosons are collimated, and can consequently be reconstructed as a single large-radius jet.
This search has three advantages. The first is a statistical benefit by large branching ratios of the SM bosons. The second is to use characteristic signatures—the mass and substructure—of jets to identify as the SM bosons. The last is a small dependency on the signal model by targeting all the SM bosons. Thanks to them, the sensitivity is significantly improved compared to the previous analyses.
Exclusion limits at the 95% confidence level on the heavy electroweakino mass parameter are set as a function of the light electroweakino mass parameter. They are set on wino or higgsino production models with various assumptions, such as the branching ratio of their decaying and the type of lightest SUSY particle. These limits are the most stringent limits. Besides, this book provides the most stringent constraints on SUSY scenarios motivated by the dark matter, the muon g-2 anomaly, and the naturalness.
Toate formatele și edițiile | Preț | Express |
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Paperback (1) | 1082.78 lei 6-8 săpt. | |
Springer Nature Singapore – 3 ian 2024 | 1082.78 lei 6-8 săpt. | |
Hardback (1) | 1089.74 lei 3-5 săpt. | |
Springer Nature Singapore – 2 ian 2023 | 1089.74 lei 3-5 săpt. |
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Specificații
ISBN-13: 9789811965951
ISBN-10: 9811965951
Ilustrații: XVIII, 220 p. 128 illus., 123 illus. in color.
Dimensiuni: 155 x 235 mm
Greutate: 0.34 kg
Ediția:1st ed. 2023
Editura: Springer Nature Singapore
Colecția Springer
Seria Springer Theses
Locul publicării:Singapore, Singapore
ISBN-10: 9811965951
Ilustrații: XVIII, 220 p. 128 illus., 123 illus. in color.
Dimensiuni: 155 x 235 mm
Greutate: 0.34 kg
Ediția:1st ed. 2023
Editura: Springer Nature Singapore
Colecția Springer
Seria Springer Theses
Locul publicării:Singapore, Singapore
Cuprins
Introduction.- Theoretical Background.- Experimental Apparatus.- Data and Monte Carlo Simulations.- Physics Object Reconstruction.- Boson Tagging.- Event Selection.- Background Estimation.- Systematic Uncertainties.- Results.- Discussions.- Conclusions.
Notă biografică
Yuta Okazaki received the Bachelor of Science, Master of Science, and Ph.D degrees from Kyoto University in 2016, 2018, and 2022, respectively.
From September 2021, he is currently a researcher belonging to High Energy Accelerator Research Organization (KEK) in Japan. His research interests include the anomalous magnetic moment of muon and he works in the muon g-2/EDM groups to measure the nature of muon in J-PARC.
From April 2019 to September 2021, he was a recipient of the Research Fellowship of the Japan Society for the Promotion of Science. From April 2016 to September 2021, he worked as a collaboration member of the ATLAS experiment and searched for electroweak supersymmetric particles.
From September 2021, he is currently a researcher belonging to High Energy Accelerator Research Organization (KEK) in Japan. His research interests include the anomalous magnetic moment of muon and he works in the muon g-2/EDM groups to measure the nature of muon in J-PARC.
From April 2019 to September 2021, he was a recipient of the Research Fellowship of the Japan Society for the Promotion of Science. From April 2016 to September 2021, he worked as a collaboration member of the ATLAS experiment and searched for electroweak supersymmetric particles.
Textul de pe ultima copertă
Supersymmetry (SUSY) introduces superpartners of the Standard Model (SM) particles. If their masses are typically O(100 GeV) ∼ O(TeV), a lightest neutralino can be a candidate for the dark matter, and the problem is solved by canceling the correction of the Higgs boson mass. Further, SUSY can explain the experimental result of the muon magnetic moment (g-2).
This book presents a search for electroweakinos—the superpartners of the SM electroweak bosons—such as charginos and neutralinos using data at the LHC collected by the ATLAS detector. Pair-produced electroweakinos decay into the light ones and SM bosons (W/Z/h), and with the large mass difference between the heavy and light electroweakinos, the SM bosons have high momenta. In a fully hadronic final state, quarks decayed from the bosons are collimated, and can consequently be reconstructed as a single large-radius jet.
This search has three advantages. The first is a statistical benefit by large branching ratios of the SM bosons. The second is to use characteristic signatures—the mass and substructure—of jets to identify as the SM bosons. The last is a small dependency on the signal model by targeting all the SM bosons. Thanks to them, the sensitivity is significantly improved compared to the previous analyses.
Exclusion limits at the 95% confidence level on the heavy electroweakino mass parameter are set as a function of the light electroweakino mass parameter. They are set on wino or higgsino production models with various assumptions, such as the branching ratio of their decaying and the type of lightest SUSY particle. These limits are the most stringent limits. Besides, this book provides the most stringent constraints on SUSY scenarios motivated by the dark matter, the muon g-2 anomaly, and the naturalness.
This book presents a search for electroweakinos—the superpartners of the SM electroweak bosons—such as charginos and neutralinos using data at the LHC collected by the ATLAS detector. Pair-produced electroweakinos decay into the light ones and SM bosons (W/Z/h), and with the large mass difference between the heavy and light electroweakinos, the SM bosons have high momenta. In a fully hadronic final state, quarks decayed from the bosons are collimated, and can consequently be reconstructed as a single large-radius jet.
This search has three advantages. The first is a statistical benefit by large branching ratios of the SM bosons. The second is to use characteristic signatures—the mass and substructure—of jets to identify as the SM bosons. The last is a small dependency on the signal model by targeting all the SM bosons. Thanks to them, the sensitivity is significantly improved compared to the previous analyses.
Exclusion limits at the 95% confidence level on the heavy electroweakino mass parameter are set as a function of the light electroweakino mass parameter. They are set on wino or higgsino production models with various assumptions, such as the branching ratio of their decaying and the type of lightest SUSY particle. These limits are the most stringent limits. Besides, this book provides the most stringent constraints on SUSY scenarios motivated by the dark matter, the muon g-2 anomaly, and the naturalness.
Caracteristici
Nominated as an outstanding Ph.D. thesis by Kyoto University Search for electroweak gauginos in the various models using SUSY parameter scans The first time to search for electroweak gauginos directly at LHC using fully hadronic final state