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Searches for CP Violation in Charmed Meson Decays: A Study of D+ → K - K+ ∏+ at the LHCb Experiment: Springer Theses

Autor Hamish Gordon
en Limba Engleză Hardback – 26 iun 2014
Our current understanding of the fundamental building blocks of the Universe, summarised by the Standard Model of particle physics, is incomplete. For example, it fails to explain why we do not see equal, or almost equal, numbers of particles and their antiparticle partners. To explain this asymmetry requires, among other effects, a mechanism known as charge-parity (CP) violation that causes differences between the rates at which particles and antiparticles decay. CP violation is seen in systems containing bottom and strange quarks, but not in those with up, charm or top quarks. This thesis describes searches for particle-antiparticle asymmetries in the decay rates of charmed mesons. No evidence of CP violation is found. With current sensitivities, an asymmetry large enough to observe probably could not be explained by the Standard Model. Instead an explanation could come from new physics, for example contributions from supersymmetric or other undiscovered heavy particles. In the thesis, the development of new techniques to search for these asymmetries is described. They are applied to data from the LHCb experiment at CERN to make precise measurements of asymmetries in the D^+->K^-K^+pi^+ decay channel. This is the most promising charged D decay for CP violation searches.
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Specificații

ISBN-13: 9783319070667
ISBN-10: 3319070665
Pagini: 176
Ilustrații: XV, 158 p. 102 illus., 21 illus. in color.
Dimensiuni: 155 x 235 x 19 mm
Greutate: 0.43 kg
Ediția:2014
Editura: Springer International Publishing
Colecția Springer
Seria Springer Theses

Locul publicării:Cham, Switzerland

Public țintă

Research

Cuprins

Theoretical Background.- The LHCb Detector.- Search for CP Violation in D^+->K^-K^+pi^ Decays with Data Collected at LHCb in 2010.- Search for CP Violation in D+ ! + Decays with Data Collected at LHCb in 2011.- Conclusions and Outlook.- Appendix.

Notă biografică

Hamish Gordon is a Marie Curie research fellow working for CERN. He currently contributes to the CLOUD and LHCb experiments.

Textul de pe ultima copertă

Our current understanding of the fundamental building blocks of the Universe, summarised by the Standard Model of particle physics, is incomplete. For example, it fails to explain why we do not see equal, or almost equal, numbers of particles and their antiparticle partners. To explain this asymmetry requires, among other effects, a mechanism known as charge-parity (CP) violation that causes differences between the rates at which particles and antiparticles decay. CP violation is seen in systems containing bottom and strange quarks, but not in those with up, charm or top quarks. This thesis describes searches for particle-antiparticle asymmetries in the decay rates of charmed mesons. No evidence of CP violation is found. With current sensitivities, an asymmetry large enough to observe probably could not be explained by the Standard Model. Instead an explanation could come from new physics, for example contributions from supersymmetric or other undiscovered heavy particles. In the thesis, the development of new techniques to search for these asymmetries is described. They are applied to data from the LHCb experiment at CERN to make precise measurements of asymmetries in the D^+->K^-K^+pi^+ decay channel. This is the most promising charged D decay for CP violation searches.

Caracteristici

Nominated as an outstanding Ph.D. thesis by the University of Oxford, UK Explains the latest data analysis procedures in flavour physics in more detail than is possible in a journal article In-depth account of the challenges and systematic uncertainties associated with precise charge asymmetry measurements Documents the first search for CP violation published by the LHCb collaboration Includes supplementary material: sn.pub/extras