Rare hadronic decays of charged B mesons at LHCb
<p>This thesis documents two searches for rare hadronic decays of B<sup>+</sup> mesons with the LHCb experiment at the Large Hadron Collider. Both are performed using proton-proton collision data corresponding to an integrated luminosity of 4.8 fb<sup>−1</sup>, collecte...
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis |
| Language: | English |
| Published: |
2018
|
| Subjects: |
| _version_ | 1797083827685818368 |
|---|---|
| author | Hadavizadeh, T |
| author2 | John, M |
| author_facet | John, M Hadavizadeh, T |
| author_sort | Hadavizadeh, T |
| collection | OXFORD |
| description | <p>This thesis documents two searches for rare hadronic decays of B<sup>+</sup> mesons with the LHCb experiment at the Large Hadron Collider. Both are performed using proton-proton collision data corresponding to an integrated luminosity of 4.8 fb<sup>−1</sup>, collected at centre-of-mass energies of 7, 8 and 13 TeV during 2011–2016.</p> <p>The first is a search for B<sup>+</sup> → D<sub>s</sub><sup>+</sup>K<sup>+</sup>K<sup>−</sup> decays. A significant signal is observed for the first time and the branching fraction is determined to be B(B<sup>+</sup> → D<sub>s</sub><sup>+</sup>K<sup>+</sup>K<sup>−</sup>) = (7.1 ± 0.5 ± 0.6 ± 0.7) × 10<sup>−6</sup>, where the first uncertainty is statistical, the second systematic and the third due to the uncertainty on the branching fraction of the normalisation mode B<sup>+</sup> → Ds<sup>+</sup>D<sup>0</sup>.</p> <p>The second search is performed for the rare pure annihilation decay B<sup>+</sup> → D<sub>s</sub><sup>+</sup>φ. No significant signal is observed and a limit of B(B<sup>+</sup> → D<sub>s</sub><sup>+</sup>φ) &LT; 4.9 × 10<sup>−7</sup> is set on the branching fraction at 95% confidence level.</p> |
| first_indexed | 2024-03-07T01:46:58Z |
| format | Thesis |
| id | oxford-uuid:98bd5c16-af0d-4832-9743-ac97d4407aec |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T01:46:58Z |
| publishDate | 2018 |
| record_format | dspace |
| spelling | oxford-uuid:98bd5c16-af0d-4832-9743-ac97d4407aec2022-03-27T00:09:10ZRare hadronic decays of charged B mesons at LHCbThesishttp://purl.org/coar/resource_type/c_db06uuid:98bd5c16-af0d-4832-9743-ac97d4407aecParticle PhysicsEnglishORA Deposit2018Hadavizadeh, TJohn, M<p>This thesis documents two searches for rare hadronic decays of B<sup>+</sup> mesons with the LHCb experiment at the Large Hadron Collider. Both are performed using proton-proton collision data corresponding to an integrated luminosity of 4.8 fb<sup>−1</sup>, collected at centre-of-mass energies of 7, 8 and 13 TeV during 2011–2016.</p> <p>The first is a search for B<sup>+</sup> → D<sub>s</sub><sup>+</sup>K<sup>+</sup>K<sup>−</sup> decays. A significant signal is observed for the first time and the branching fraction is determined to be B(B<sup>+</sup> → D<sub>s</sub><sup>+</sup>K<sup>+</sup>K<sup>−</sup>) = (7.1 ± 0.5 ± 0.6 ± 0.7) × 10<sup>−6</sup>, where the first uncertainty is statistical, the second systematic and the third due to the uncertainty on the branching fraction of the normalisation mode B<sup>+</sup> → Ds<sup>+</sup>D<sup>0</sup>.</p> <p>The second search is performed for the rare pure annihilation decay B<sup>+</sup> → D<sub>s</sub><sup>+</sup>φ. No significant signal is observed and a limit of B(B<sup>+</sup> → D<sub>s</sub><sup>+</sup>φ) &LT; 4.9 × 10<sup>−7</sup> is set on the branching fraction at 95% confidence level.</p> |
| spellingShingle | Particle Physics Hadavizadeh, T Rare hadronic decays of charged B mesons at LHCb |
| title | Rare hadronic decays of charged B mesons at LHCb |
| title_full | Rare hadronic decays of charged B mesons at LHCb |
| title_fullStr | Rare hadronic decays of charged B mesons at LHCb |
| title_full_unstemmed | Rare hadronic decays of charged B mesons at LHCb |
| title_short | Rare hadronic decays of charged B mesons at LHCb |
| title_sort | rare hadronic decays of charged b mesons at lhcb |
| topic | Particle Physics |
| work_keys_str_mv | AT hadavizadeht rarehadronicdecaysofchargedbmesonsatlhcb |