JOSH MCFAYDEN THESIS

It is also responsible for the setting of common recipes for theoretical systematic uncertainties. I was MC production coordinator from September January This involved leading a team responsible for production of all ATLAS Monte Carlo simulation and managing the generation of billions of simulated collision events. Home Contact us Help Free delivery worldwide. I have made significant contributions to the development of new and more advanced MC generator configurations.

Table of contents Introduction and Theoretical Background. The thesis focuses on searches for stop and sbottom squarks, the SUSY partners of the top and bottom quarks, which are expected to be lighter than the partners of the first and second generation quarks and therefore good candidates for the first evidence of SUSY. Search for heavy resonances decaying to a W or Z boson and a Higgs boson in final states with leptons and b-jets in This involved leading a team responsible for production of all ATLAS Monte Carlo simulation and managing the generation of billions of simulated collision events. I led the ATLAS all-hadronic stop analysis resulting in two publi- cations, one each from the and datasets. Dispatched from the UK in 3 business days When will my order arrive? Lars Von Der Wense.

Research Interests

I have made significant contributions to the development of new and more advanced MC generator configurations. Both processes are dominant backgrounds in many SUSY searches.

josh mcfayden thesis

The stop squark analysis described, with substantial leading contributions from the author, is the first search for these particles at the LHC to use the jets plus missing transverse energy plus 0-lepton signature and provides the world’s best limits on the stop mass for light neutralino LSPs.

Better integration of such computations into High Performance Computing centres is vital and I have the knowledge and experience to facilitate such developments. This is currently poorly constrained by data resulting in large systematic uncertainties.

Dynamic Modeling of Complex Industrial Processes: Other books in this series. It is also responsible for the setting of common recipes for theoretical mcfzyden uncertainties. With this new NLO regime computation of increasingly complicated processes is required and is a significant bottleneck for experiments.

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I also provided mcfaden of the QCD background for the stop analysis using a data driven method. Lars Von Der Wense. Product details Format Paperback pages Dimensions x x I led the ATLAS all-hadronic stop analysis resulting in two publi- cations, one each from the and datasets.

josh mcfayden thesis

This included searches for direct third generation SUSY particle pair production stop and sbottom in the jets and missing transverse momentum final mvfayden. Table of contents Introduction and Theoretical Background.

Josh McFayden – Research

These were ojsh of the most important searches towards the end of Run 2 as naturalness arguments suggested that thssis SUSY exists lower mass stops and sbottoms should be accessible with the data available. Implementation and validation of these new MC generator configurations requires significant tech- nical expertise and a large amount of coordination with the MC generator authors. It describes novel techniques for estimating and rejecting the Standard-Model backgrounds to searches for these particles.

I led the production of ttV MC samples including mcfyden of generator level systematic uncertainties that are vital for a huge number of ATLAS analyses and was recently an editor of a public note documenting the current status of these samples in ATLAS.

These searches are very strongly motivated by naturalness arguments.

Home Contact us Help Free delivery worldwide. I am a member of the MCNet collaboration which is dedicated to developing and supporting general-purpose Monte Carlo event generators throughout the LHC era and beyond. The mcfxyden focuses on searches for stop and sbottom squarks, the SUSY partners of the top and bottom quarks, which are expected to be lighter than the partners of the first and second generation quarks and therefore good candidates for the first evidence of SUSY.

My thesis was awarded a Springer thesis prize, the published Springer book can be found here. By using our website you agree to our use of cookies.

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Third generation SUSY and t-t +Z production : Josh McFayden :

The group is responsible for the development and validation of MC generators and samples for analyses. In the future, I am interested in developing searches that consider more challenging final states such as electroweak SUSY particle production and searches involving a Higgs boson in the SUSY particle decay chain, especially mcfqyden the H to bb decay mode.

Heavy flavour modelling Heavy flavour production modelling and the associated systematic uncertainties are important for many analyses. Measurement of SM VH to bb production is essential to precisely measure Higgs coupling to fermions, a crucial remaining piece of the SM.

In both analyses I introduced and optimised new kinematic variables for discrimination between signal and background that became essential for the sensitivity of the analysis.

josh mcfayden thesis

I have also contributed significantly to development of MC generators, improving MC modelling and understanding of the corresponding uncertainties. Search for heavy resonances decaying to a W or Z boson and a Higgs boson in final states with leptons and b-jets in I was an editor for the internal documentation for both the 7 and 8 TeV analyses which both set world-leading limits at the time for stop pair production in the high stop mass region.

NLO merging schemes are the cutting edge technology for such samples and for Run 2 the implemen- tation of these schemes is essential to improve modelling and reduce systematic uncertainties.

All in all, the thesis describes three different world-leading analyses in both Standard Model and SUSY physics and therefore represents a major contribution to the field. Dispatched from the UK in 3 business days When will my order arrive?