The Library
Search for CP violation in charmless three-body decays of strange-beauty baryons
Tools
Mathad, Abhijit (2018) Search for CP violation in charmless three-body decays of strange-beauty baryons. PhD thesis, University of Warwick.
|
PDF
WRAP_Theses_Mathad_2018.pdf - Submitted Version - Requires a PDF viewer. Download (35Mb) | Preview |
Official URL: http://webcat.warwick.ac.uk/record=b3352473~S15
Abstract
Studies of charmless three-body decays of the Ξb ̅ and ꭥb baryons to ph-h’- final states, where h(‘) denotes a kaon or pion, are presented. The first part of the analysis is based on a sample of proton-proton collision data collected by the LHCb experiment at centre-of-mass energies √s = 7 & 8TeV, corresponding to an integrated luminosity of 3 fb-1. In this analysis, the decay Ξb ̅→ pK-K- is observed with a significance of 8:7 standard deviations, and evidence at the level of 3:4 standard deviations is found for the Ξb ̅→pK-π- decay. The results are reported, relative to the B-→K+K-K- normalisation channel, for the products of branching fractions and b-hadron production fractions. The branching fractions of Ξb ̅→pK-π- and Ξb ̅→pK-K- relative to of Ξb ̅→pK-K- decays are also measured. In the second part of the analysis, an amplitude analysis of Ξb ̅→pK-K- decays is presented. This analysis is based on a data sample corresponding to integrated luminosities of 1 fb-1, 2 fb-1, 0:3 fb-1 and 1:7 fb-1 collected by LHCb during 2011 (√s = 7TeV), 2012 (√s = 8TeV), 2015 (√s = 13TeV) and 2016 (√s = 13TeV) respectively. Sensitivity to the CP violation parameters in Ξb ̅→ pK-K- decays is also presented. An updated search for the previously unobserved charmless decay ꭥb ̅→ pK- K- is also conducted.
Item Type: | Thesis (PhD) | ||||
---|---|---|---|---|---|
Subjects: | Q Science > QC Physics | ||||
Library of Congress Subject Headings (LCSH): | Baryons -- Decay, Collisions (Nuclear physics), Particles (Nuclear physics) -- Charm, Standard model (Nuclear physics), Strange particles | ||||
Official Date: | November 2018 | ||||
Dates: |
|
||||
Institution: | University of Warwick | ||||
Theses Department: | Department of Physics | ||||
Thesis Type: | PhD | ||||
Publication Status: | Unpublished | ||||
Supervisor(s)/Advisor: | Gershon, T. J. ; Latham, Thomas | ||||
Sponsors: | University of Warwick | ||||
Format of File: | |||||
Extent: | viii, 236 leaves : illustrations, charts | ||||
Language: | eng |
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |
Downloads
Downloads per month over past year