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Search for the Standard Model Higgs Boson in the H → ZZ → l + l - qq Decay Channel at CMS (Springer Theses) - Tapa dura
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The theoretical foundations of the Standard Model of elementary particles relies on the existence of the Higgs boson, a particle which has been revealed for the first time by the experiments run at the Large Hadron Collider (LHC) in 2012. As the Higgs boson is an unstable particle, its search strategies were based on its decay products.
In this thesis, Francesco Pandolfi conducted a search for the Higgs boson in the H → ZZ → l + l - qq Decay Channel with 4.6 fb -1 of 7 TeV proton-proton collision data collected by the Compact Muon Solenoid (CMS) experiment. The presence of jets in the final state poses a series of challenges to the experimenter: both from a technical point of view, as jets are complex objects and necessitate of ad-hoc reconstruction techniques, and from an analytical one, as backgrounds with jets are copious at hadron colliders, therefore analyses must obtain high degrees of background rejection in order to achieve competitive sensitivity. This is accomplished by following two directives: the use of an angular likelihood discriminant, capable of discriminating events likely to originate from the decay of a scalar boson from non-resonant backgrounds, and by using jet parton flavor tagging, selecting jets compatible with quark hadronization and discarding jets more likely to be initiated by gluons.
The events passing the selection requirements in 4.6 fb -1 of data
collected by the CMS detector are examined, in the search of a possible signal compatible with the decay of a heavy Higgs boson. The thesis describes the statistical tools and the results of this analysis. This work is a paradigm for studies of the Higgs boson with final states with jets. The non-expert physicists will enjoy a complete and eminently readable description of a proton-proton collider analysis. At the same time, the expert reader will learn the details of the searches done with jets at CMS.
Francesco Pandolfi, after having obtained his Laurea Triennale (2003) and Specialistica (2008) in Fisica with full grades cum laude, received his PhD from the Sapienza University of Rome in 2012 with this Thesis. Born in 1984, Rome, he has already more than 200 publications to his name. Dr Pandolfi is currently affiliated to ETH, Institute for Particle Physics, Zurich, Switzerland.
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- EditorialSpringer
- Año de publicación2013
- ISBN 10 3319009028
- ISBN 13 9783319009025
- EncuadernaciónTapa dura
- Número de páginas146
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Search for the Standard Model Higgs Boson in the H ZZ l + l - qq Decay Channel at CMS (Springer Theses) [Hardcover ]
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Search for the Standard Model Higgs Boson in the H ? ZZ ? l + l - qq Decay Channel at CMS (Springer Theses)
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Search for the Standard Model Higgs Boson in the H â ZZ â l + l - qq Decay Channel at CMS
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Search for the Standard Model Higgs Boson in the H ¿ ZZ ¿ l + l - qq Decay Channel at CMS
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Descripción Buch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The theoretical foundations of the Standard Model of elementary particles relies on the existence of the Higgs boson, a particle which has been revealed for the first time by the experiments run at the Large Hadron Collider (LHC) in 2012. As the Higgs boson is an unstable particle, its search strategies were based on its decay products.In this thesis, Francesco Pandolfi conducted a search for the Higgs boson in the H ZZ l + l - qq Decay Channel with 4.6 fb -1 of 7 TeV proton-proton collision data collected by the Compact Muon Solenoid (CMS) experiment. The presence of jets in the final state poses a series of challenges to the experimenter: both from a technical point of view, as jets are complex objects and necessitate of ad-hoc reconstruction techniques, and from an analytical one, as backgrounds with jets are copious at hadron colliders, therefore analyses must obtain high degrees of background rejection in order to achieve competitive sensitivity. This is accomplished by following two directives: the use of an angular likelihood discriminant, capable of discriminating events likely to originate from the decay of a scalar boson from non-resonant backgrounds, and by using jet parton flavor tagging, selecting jets compatible with quark hadronization and discarding jets more likely to be initiated by gluons. The events passing the selection requirements in 4.6 fb -1 of datacollected by the CMS detector are examined, in the search of a possible signal compatible with the decay of a heavy Higgs boson. The thesis describes the statistical tools and the results of this analysis. This work is a paradigm for studies of the Higgs boson with final states with jets. The non-expert physicists will enjoy a complete and eminently readable description of a proton-proton collider analysis. At the same time, the expert reader will learn the details of the searches done with jets at CMS. 144 pp. Englisch. Nº de ref. del artículo: 9783319009025
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Search for the Standard Model Higgs Boson in the H ¿ ZZ ¿ l + l - qq Decay Channel at CMS
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Descripción Gebunden. Condición: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Nominated as an outstanding PhD thesis by the University of Rome La SapienzaDescribes novel techniques, such as the analysis tool implemented to distinguish between jets originated by quarks and gluons Offers a complete and highly readable . Nº de ref. del artículo: 4495988
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Search for the Standard Model Higgs Boson in the H ¿ ZZ ¿ l + l - qq Decay Channel at CMS
Publicado por
Springer International Publishing
(2013)
ISBN 10: 3319009028
ISBN 13: 9783319009025
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Descripción Buch. Condición: Neu. Druck auf Anfrage Neuware - Printed after ordering - The theoretical foundations of the Standard Model of elementary particles relies on the existence of the Higgs boson, a particle which has been revealed for the first time by the experiments run at the Large Hadron Collider (LHC) in 2012. As the Higgs boson is an unstable particle, its search strategies were based on its decay products.In this thesis, Francesco Pandolfi conducted a search for the Higgs boson in the H ZZ l + l - qq Decay Channel with 4.6 fb -1 of 7 TeV proton-proton collision data collected by the Compact Muon Solenoid (CMS) experiment. The presence of jets in the final state poses a series of challenges to the experimenter: both from a technical point of view, as jets are complex objects and necessitate of ad-hoc reconstruction techniques, and from an analytical one, as backgrounds with jets are copious at hadron colliders, therefore analyses must obtain high degrees of background rejection in order to achieve competitive sensitivity. This is accomplished by following two directives: the use of an angular likelihood discriminant, capable of discriminating events likely to originate from the decay of a scalar boson from non-resonant backgrounds, and by using jet parton flavor tagging, selecting jets compatible with quark hadronization and discarding jets more likely to be initiated by gluons. The events passing the selection requirements in 4.6 fb -1 of datacollected by the CMS detector are examined, in the search of a possible signal compatible with the decay of a heavy Higgs boson. The thesis describes the statistical tools and the results of this analysis. This work is a paradigm for studies of the Higgs boson with final states with jets. The non-expert physicists will enjoy a complete and eminently readable description of a proton-proton collider analysis. At the same time, the expert reader will learn the details of the searches done with jets atCMS. Nº de ref. del artículo: 9783319009025
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