Search for a light Higgs boson in central exclusive diffraction: method and detectors: Dissertation

Juha Kalliopuska

Research output: ThesisDissertationCollection of Articles

Abstract

By detecting leading protons produced in the Central Exclusive Diffractive process, p+p [arrowright] p+X+p, one can measure the missing mass, and scan for possible new particle states such as the Higgs boson. This process augments - in a model independent way - the standard methods for new particle searches at the Large Hadron Collider (LHC) and will allow detailed analyses of the produced central system, such as the spin-parity properties of the Higgs boson. The exclusive central diffractive process makes possible precision studies of gluons at the LHC and complements the physics scenarios foreseen at the next e+e- linear collider. This thesis first presents the conclusions of the first systematic analysis of the expected precision measurement of the leading proton momentum and the accuracy of the reconstructed missing mass. In this initial analysis, the scattered protons are tracked along the LHC beam line and the uncertainties expected in beam transport and detection of the scattered leading protons are accounted for. The main focus of the thesis is in developing the necessary radiation hard precision detector technology for coping with the extremely demanding experimental environment of the LHC. This will be achieved by using a 3D silicon detector design, which in addition to the radiation hardness of up to 5x10^15 neutrons/cm2, offers properties such as a high signal-to- noise ratio, fast signal response to radiation and sensitivity close to the very edge of the detector. This work reports on the development of a novel semi-3D detector design that simplifies the 3D fabrication process, but conserves the necessary properties of the 3D detector design required in the LHC and in other imaging applications.
Original languageEnglish
QualificationDoctor Degree
Awarding Institution
  • University of Helsinki
Place of PublicationHelsinki
Publisher
Print ISBNs978-952-10-3243-1
Electronic ISBNs978-952-10-3244-8
Publication statusPublished - 2007
MoE publication typeG5 Doctoral dissertation (article)

Fingerprint

Higgs bosons
detectors
diffraction
protons
theses
radiation
gluons
complement
parity
signal to noise ratios
hardness
momentum
neutrons
fabrication
physics
sensitivity
silicon

Keywords

  • Higgs boson
  • central exclusice diffraction
  • missing mass method
  • silicon radiation detector
  • 3D detector
  • semi-3D detector
  • radiation hardness
  • TCAD simulation

Cite this

Kalliopuska, Juha. / Search for a light Higgs boson in central exclusive diffraction: method and detectors : Dissertation. Helsinki : University of Helsinki, 2007. 148 p.
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title = "Search for a light Higgs boson in central exclusive diffraction: method and detectors: Dissertation",
abstract = "By detecting leading protons produced in the Central Exclusive Diffractive process, p+p [arrowright] p+X+p, one can measure the missing mass, and scan for possible new particle states such as the Higgs boson. This process augments - in a model independent way - the standard methods for new particle searches at the Large Hadron Collider (LHC) and will allow detailed analyses of the produced central system, such as the spin-parity properties of the Higgs boson. The exclusive central diffractive process makes possible precision studies of gluons at the LHC and complements the physics scenarios foreseen at the next e+e- linear collider. This thesis first presents the conclusions of the first systematic analysis of the expected precision measurement of the leading proton momentum and the accuracy of the reconstructed missing mass. In this initial analysis, the scattered protons are tracked along the LHC beam line and the uncertainties expected in beam transport and detection of the scattered leading protons are accounted for. The main focus of the thesis is in developing the necessary radiation hard precision detector technology for coping with the extremely demanding experimental environment of the LHC. This will be achieved by using a 3D silicon detector design, which in addition to the radiation hardness of up to 5x10^15 neutrons/cm2, offers properties such as a high signal-to- noise ratio, fast signal response to radiation and sensitivity close to the very edge of the detector. This work reports on the development of a novel semi-3D detector design that simplifies the 3D fabrication process, but conserves the necessary properties of the 3D detector design required in the LHC and in other imaging applications.",
keywords = "Higgs boson, central exclusice diffraction, missing mass method, silicon radiation detector, 3D detector, semi-3D detector, radiation hardness, TCAD simulation",
author = "Juha Kalliopuska",
note = "Projektin nimi: ADPIX TK601 Project code: 5061 102 p. + app. 46 p.",
year = "2007",
language = "English",
isbn = "978-952-10-3243-1",
series = "University of Helsinki: Department of Physics. Report Series in Physics D",
publisher = "University of Helsinki",
number = "HU-P-D13",
address = "Finland",
school = "University of Helsinki",

}

Kalliopuska, J 2007, 'Search for a light Higgs boson in central exclusive diffraction: method and detectors: Dissertation', Doctor Degree, University of Helsinki, Helsinki.

Search for a light Higgs boson in central exclusive diffraction: method and detectors : Dissertation. / Kalliopuska, Juha.

Helsinki : University of Helsinki, 2007. 148 p.

Research output: ThesisDissertationCollection of Articles

TY - THES

T1 - Search for a light Higgs boson in central exclusive diffraction: method and detectors

T2 - Dissertation

AU - Kalliopuska, Juha

N1 - Projektin nimi: ADPIX TK601 Project code: 5061 102 p. + app. 46 p.

PY - 2007

Y1 - 2007

N2 - By detecting leading protons produced in the Central Exclusive Diffractive process, p+p [arrowright] p+X+p, one can measure the missing mass, and scan for possible new particle states such as the Higgs boson. This process augments - in a model independent way - the standard methods for new particle searches at the Large Hadron Collider (LHC) and will allow detailed analyses of the produced central system, such as the spin-parity properties of the Higgs boson. The exclusive central diffractive process makes possible precision studies of gluons at the LHC and complements the physics scenarios foreseen at the next e+e- linear collider. This thesis first presents the conclusions of the first systematic analysis of the expected precision measurement of the leading proton momentum and the accuracy of the reconstructed missing mass. In this initial analysis, the scattered protons are tracked along the LHC beam line and the uncertainties expected in beam transport and detection of the scattered leading protons are accounted for. The main focus of the thesis is in developing the necessary radiation hard precision detector technology for coping with the extremely demanding experimental environment of the LHC. This will be achieved by using a 3D silicon detector design, which in addition to the radiation hardness of up to 5x10^15 neutrons/cm2, offers properties such as a high signal-to- noise ratio, fast signal response to radiation and sensitivity close to the very edge of the detector. This work reports on the development of a novel semi-3D detector design that simplifies the 3D fabrication process, but conserves the necessary properties of the 3D detector design required in the LHC and in other imaging applications.

AB - By detecting leading protons produced in the Central Exclusive Diffractive process, p+p [arrowright] p+X+p, one can measure the missing mass, and scan for possible new particle states such as the Higgs boson. This process augments - in a model independent way - the standard methods for new particle searches at the Large Hadron Collider (LHC) and will allow detailed analyses of the produced central system, such as the spin-parity properties of the Higgs boson. The exclusive central diffractive process makes possible precision studies of gluons at the LHC and complements the physics scenarios foreseen at the next e+e- linear collider. This thesis first presents the conclusions of the first systematic analysis of the expected precision measurement of the leading proton momentum and the accuracy of the reconstructed missing mass. In this initial analysis, the scattered protons are tracked along the LHC beam line and the uncertainties expected in beam transport and detection of the scattered leading protons are accounted for. The main focus of the thesis is in developing the necessary radiation hard precision detector technology for coping with the extremely demanding experimental environment of the LHC. This will be achieved by using a 3D silicon detector design, which in addition to the radiation hardness of up to 5x10^15 neutrons/cm2, offers properties such as a high signal-to- noise ratio, fast signal response to radiation and sensitivity close to the very edge of the detector. This work reports on the development of a novel semi-3D detector design that simplifies the 3D fabrication process, but conserves the necessary properties of the 3D detector design required in the LHC and in other imaging applications.

KW - Higgs boson

KW - central exclusice diffraction

KW - missing mass method

KW - silicon radiation detector

KW - 3D detector

KW - semi-3D detector

KW - radiation hardness

KW - TCAD simulation

M3 - Dissertation

SN - 978-952-10-3243-1

T3 - University of Helsinki: Department of Physics. Report Series in Physics D

PB - University of Helsinki

CY - Helsinki

ER -