LHCb Trigger based B physics analysis
Lead Research Organisation:
University of Liverpool
Department Name: Physics
Abstract
The student will develop the selection for the analysis before data taking and reconstruction of decay channels required to correct for systematic bias of the detector to correct the electron/muon reconstruction efficiency ratio and evaluate the trigger efficiencies. Data throughput for a defined cost and power envelope will be analysed to understand effects of residual misalignments and calibration issues in data reconstruction. Highly parallelised data monitoring and calibration for the new VELO pixel detector will be developed.
Publications
Aaij R
(2020)
Measurement of $${\psi {(2S)}} $$ production cross-sections in proton-proton collisions at $$\sqrt{s} =7$$ and $$13\text { TeV} $$
in The European Physical Journal C
Aaij R
(2019)
Measurement of the Charm-Mixing Parameter y_{CP}.
in Physical review letters
Aaij R
(2019)
Measurement of the CP-violating phase ? from B s 0 ? J / ? p + p - decays in 13 TeV pp collisions
in Physics Letters B
Aaij R
(2019)
Amplitude Analysis of B^{±}?p^{±}K^{+}K^{-} Decays.
in Physical review letters
Aaij R
(2019)
Search for the rare decay $${ {{B} ^+}} \!\rightarrow {\mu ^+} {\mu ^-} {\mu ^+} { {\upnu } _\mu } $$
in The European Physical Journal C
Aaij R
(2019)
Measurement of CP-Violating and Mixing-Induced Observables in B_{s}^{0}??? Decays.
in Physical review letters
Aaij R
(2018)
Evidence for an ? c ( 1 S ) p - resonance in B 0 ? ? c ( 1 S ) K + p - decays.
in The European physical journal. C, Particles and fields
Aaij R
(2018)
Measurement of Angular and CP Asymmetries in D^{0}?p^{+}p^{-}µ^{+}µ^{-} and D^{0}?K^{+}K^{-}µ^{+}µ^{-} Decays.
in Physical review letters
Aaij R
(2020)
Measurement of the $${\eta _{c}} (1S)$$ production cross-section in $$p $$ $$p $$ collisions at $$\sqrt{s} = 13$$ $$\, \text {TeV}$$
in The European Physical Journal C
Aaij R
(2019)
Observation of CP Violation in Charm Decays.
in Physical review letters
Aaij R
(2019)
Measurements of CP asymmetries in charmless four-body $${\varLambda } ^0_{b} $$ and $${\varXi } ^0_{b} $$ decays
in The European Physical Journal C
Aaij R
(2019)
Updated measurement of time-dependent $$CP$$-violating observables in $${ {B} ^0_{s}} \rightarrow J/\psi K^+ K^-$$ decays
in The European Physical Journal C
Aaij R
(2020)
First Observation of Excited O_{b}^{-} States.
in Physical review letters
Aaij R
(2019)
Observation of Two Resonances in the ?_{b}^{0}p^{±} Systems and Precise Measurement of S_{b}^{±} and S_{b}^{*±} Properties.
in Physical review letters
Aaij R
(2020)
Search for A^{'}?µ^{+}µ^{-} Decays.
in Physical review letters
Aaij R
(2020)
Updated measurement of decay-time-dependent C P asymmetries in D 0 ? K + K - and D 0 ? p + p - decays
in Physical Review D
Aaij R
(2019)
Measurement of the relative B - ? D 0 / D * 0 / D * * 0 µ - ? ¯ µ branching fractions using B - mesons from B ¯ s 2 * 0 decays
in Physical Review D
Aaij R
(2018)
Measurement of the Lifetime of the Doubly Charmed Baryon ? c c + +
in Physical Review Letters
Aaij R
(2018)
Measurement of Antiproton Production in p - He Collisions at s NN = 110 GeV
in Physical Review Letters
Aaij R
(2020)
Observation of Several Sources of CP Violation in B^{+}?p^{+}p^{+}p^{-} Decays.
in Physical review letters
Aaij R
(2019)
Search for Lepton-Flavor Violating Decays B^{+}?K^{+}µ^{±}e^{±}.
in Physical review letters
Aaij R
(2019)
Measurement of the mass and production rate of ? b - baryons
in Physical Review D
Aaij R
(2020)
Determination of quantum numbers for several excited charmed mesons observed in B - ? D * + p - p - decays
in Physical Review D
Aaij R
(2018)
First Observation of the Doubly Charmed Baryon Decay ?_{cc}^{++}??_{c}^{+}p^{+}.
in Physical review letters
Aaij R
(2019)
First Observation of the Radiative Decay ?_{b}^{0}???.
in Physical review letters
Aaij R
(2019)
Measurement of B + , B 0 and ? b 0 production in p Pb collisions at s NN = 8.16 TeV
in Physical Review D
Aaij R
(2019)
First Measurement of Charm Production in its Fixed-Target Configuration at the LHC.
in Physical review letters
Aaij R
(2019)
Precision measurement of the ? c + , ? c + , and ? c 0 baryon lifetimes
in Physical Review D
Aaij R
(2020)
Precision measurement of the $$ {\varXi}_{cc}^{++} $$ mass
in Journal of High Energy Physics
Aaij R
(2018)
Measurement of the O_{c}^{0} Baryon Lifetime.
in Physical review letters
Aaij R
(2019)
Search for Lepton-Universality Violation in B^{+}?K^{+}l^{+}l^{-} Decays.
in Physical review letters
Aaij R
(2018)
Search for lepton-flavour-violating decays of Higgs-like bosons.
in The European physical journal. C, Particles and fields
Aaij R
(2019)
Measurement of Charged Hadron Production in Z-Tagged Jets in Proton-Proton Collisions at sqrt[s]=8 TeV.
in Physical review letters
Aaij R
(2019)
Observation of an Excited B_{c}^{+} State.
in Physical review letters
Aaij R
(2019)
Observation of a Narrow Pentaquark State, P_{c}(4312)^{+}, and of the Two-Peak Structure of the P_{c}(4450)^{+}.
in Physical review letters
Aaij R
(2020)
Amplitude analysis of the B + ? p + p + p - decay
in Physical Review D
Aaij R
(2019)
Observation of B_{(s)}^{0}?J/?pp[over ¯] Decays and Precision Measurements of the B_{(s)}^{0} Masses.
in Physical review letters
Aaij R
(2019)
Search for the doubly charmed baryon $$\Xi_{cc}^+$$
in Science China Physics, Mechanics & Astronomy
Aaij R
(2019)
Measurement of the Mass Difference Between Neutral Charm-Meson Eigenstates.
in Physical review letters
Aaij R
(2019)
Search for CP Violation in D_{s}^{+}?K_{S}^{0}p^{+}, D^{+}?K_{S}^{0}K^{+}, and D^{+}??p^{+} Decays.
in Physical review letters
Aaij R
(2018)
Search for CP violation in ? b 0 ? p K - and ? b 0 ? p p - decays
in Physics Letters B
Aaij R
(2019)
Observation of New Resonances in the ?_{b}^{0}p^{+}p^{-} System.
in Physical review letters
Aaij R
(2019)
Model-Independent Observation of Exotic Contributions to B^{0}?J/?K^{+}p^{-} Decays.
in Physical review letters
Aaij R
(2019)
Measurement of the branching fraction and $$C\!P$$ asymmetry in $${ {{B} ^+}} \!\rightarrow { {J /\psi }} { {\rho } ^+} $$ decays
in The European Physical Journal C
Aaij R
(2019)
Measurement of b hadron fractions in 13 TeV p p collisions
in Physical Review D
Aaij R
(2019)
Measurement of the B c - meson production fraction and asymmetry in 7 and 13 TeV p p collisions
in Physical Review D
Aaij R
(2019)
Search for the Lepton-Flavor-Violating Decays B_{s}^{0}?t^{±}µ^{±} and B^{0}?t^{±}µ^{±}.
in Physical review letters
Studentship Projects
Project Reference | Relationship | Related To | Start | End | Student Name |
---|---|---|---|---|---|
ST/P006752/1 | 30/09/2017 | 29/09/2024 | |||
2021483 | Studentship | ST/P006752/1 | 30/09/2017 | 31/12/2021 | Tom Williams Harrison |
Description | 6-month Placement at Exgence Ltd |
Organisation | Exgence |
Country | United Kingdom |
Sector | Private |
PI Contribution | As a requirement of the STFC funding of this PhD, I undertook a 6-month placement at a company unrelated to my research work. This involved designing and implementing a machine-learning based product at Exgence Ltd, a Manchester startup to provide solutions to software vendor companies. |
Collaborator Contribution | See above. |
Impact | I have gained experience in applying machine learning and software engineering skills outside academia in the wider economy. |
Start Year | 2019 |
Title | LHCb Decoder Software |
Description | I have written a piece of software to decode outgoing data from the new LHCb detector between multiple formats, for use in different components of the detector software. The decoding software also reconstructs time data from the output and reorders the data in real time. |
Type Of Technology | Software |
Year Produced | 2020 |
Open Source License? | Yes |
Impact | This tool is a necessary part of the LHCb upgrade for the 3rd run of the LHC |
Description | Liverpool CERN Summer School |
Form Of Engagement Activity | Participation in an activity, workshop or similar |
Part Of Official Scheme? | No |
Geographic Reach | Regional |
Primary Audience | Schools |
Results and Impact | During my 6-month long-term attachment at CERN in 2019, I assisted in a Liverpool-hosted summer school to 6th-form students, designed to continue to foster their interest in high-energy physics and help them to form a coherent plan for beginning a career in the field. Students from a region of the UK were selected based on an application process to find talented individuals looking to pursue a career in particle physics. They were taken to CERN, where a week-long summer school was hosted by Liverpool PhD students on LTA. Components of the school included: * Lectures on topics at the forefront of high-energy physics, such as neutrinos and super-symmetry, as well as the applications of big data and machine learning to the field * Workshops to teach skills relevant to the field, such as C++ programming, and use of the ROOT software framework. A workshop on detector design was also held, where students were encouraged to design a hypothetical new detector that, if commissioned and created, would provide novel or useful insights into particle physics. The designs were presented by the students and judged by the PhD students, with small prizes given. * Quizzes on topics in particle physics and the people behind discoveries * Question/answer sessions from the school students to the PhD students on current problems in physics * Informal conversation sessions where the school students can find out about life as a researcher, and how to pursue a physics career path |
Year(s) Of Engagement Activity | 2019 |