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Searches for supersymmetric particle...

Rizzi, Chiara.

Searches for supersymmetric particles in final states with multiple top and bottom quarks with the Atlas detector

Record Type:	Electronic resources : Monograph/item
Title/Author:	Searches for supersymmetric particles in final states with multiple top and bottom quarks with the Atlas detectorby Chiara Rizzi.
Author:	Rizzi, Chiara.
Published:	Cham :Springer International Publishing :2020.
Description:	xix, 279 p. :ill., digital ;24 cm.
Contained By:	Springer Nature eBook
Subject:	Particles (Nuclear physics)
Online resource:	https://doi.org/10.1007/978-3-030-52877-5
ISBN:	9783030528775$q(electronic bk.)

Searches for supersymmetric particles in final states with multiple top and bottom quarks with the Atlas detector
Rizzi, Chiara.

Searches for supersymmetric particles in final states with multiple top and bottom quarks with the Atlas detector[electronic resource] /by Chiara Rizzi. - Cham :Springer International Publishing :2020. - xix, 279 p. :ill., digital ;24 cm. - Springer theses,2190-5053. - Springer theses..

Standard Model and Supersymmetry -- LHC and ATLAS -- Proton-Proton Interactions and Their Simulationproton-Proton Interactions and Their Simulation -- Event Reconstruction -- Statistical Methods -- Common Aspects to SUSY searches with Multiple b-jets and ETmiss -- Search for Gluino Air Production -- Search for Higgsino Pair Production -- Comparison with Other ATLAS and CMS Searches -- Conclusion -- Appendix.

This PhD thesis documents two of the highest-profile searches for supersymmetry performed at the ATLAS experiment using up to 80/fb of proton-proton collision data at a center-of-mass energy of 13 TeV delivered by the Large Hadron Collider (LHC) during its Run 2 (2015-2018) The signals of interest feature a high multiplicity of jets originating from the hadronisation of b-quarks and large missing transverse momentum, which constitutes one of the most promising final state signatures for discovery of new phenomena at the LHC. The first search is focused on the strong production of a pair of gluinos, with each gluino decaying into a neutralino and a top-antitop-quark pair or a bottom-antibottom-quark pair. The second search targets the pair production of higgsinos, with each higgsino decaying into a gravitino and a Higgs boson, which in turn is required to decay into a bottom-antibottom-quark pair. Both searches employ state-of-the-art experimental techniques and analysis strategies at the LHC, resulting in some of the most restrictive bounds available to date on the masses of the gluino,neutralino, and higgsino in the context of the models explored.

ISBN: 9783030528775$q(electronic bk.)

Standard No.: 10.1007/978-3-030-52877-5doiSubjects--Topical Terms:

204127
Particles (Nuclear physics)

LC Class. No.: QC174.17.S9 / R599 2020

Dewey Class. No.: 539.72

Searches for supersymmetric particles in final states with multiple top and bottom quarks with the Atlas detector
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520 $a This PhD thesis documents two of the highest-profile searches for supersymmetry performed at the ATLAS experiment using up to 80/fb of proton-proton collision data at a center-of-mass energy of 13 TeV delivered by the Large Hadron Collider (LHC) during its Run 2 (2015-2018) The signals of interest feature a high multiplicity of jets originating from the hadronisation of b-quarks and large missing transverse momentum, which constitutes one of the most promising final state signatures for discovery of new phenomena at the LHC. The first search is focused on the strong production of a pair of gluinos, with each gluino decaying into a neutralino and a top-antitop-quark pair or a bottom-antibottom-quark pair. The second search targets the pair production of higgsinos, with each higgsino decaying into a gravitino and a Higgs boson, which in turn is required to decay into a bottom-antibottom-quark pair. Both searches employ state-of-the-art experimental techniques and analysis strategies at the LHC, resulting in some of the most restrictive bounds available to date on the masses of the gluino,neutralino, and higgsino in the context of the models explored.
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