Particle Physics Phenomenology

Lead Research Organisation: Durham University
Department Name: Physics

Abstract

At the Large Hadron Collider protons are brought into collision with unprecedented energy to unravel fundamental questions of nature, e.g. what is the origin of mass, what is matter made of or what is the basic underlying theory to describe nature? To answer these questions it is of paramount importance to be able to separate rare signal events, induced by new physics, from the large Standard Model backgrounds. Most of the proposed new physics scenarios result in signatures with many objects in the final state, e.g. jets and leptons. However, because of the large collision energy Standard Model processes are likely to produce final states with many jets and leptons as well. Therefore, a precise calculation of these backgrounds is important for searches of new particles and measurements of new particle's properties. The aim of this theoretical project is to improve predictions for production processes by including vector bosons and many jets. For this purpose next-to-leading order (NLO) corrections have to be included in the calculation. The tool commonly used are flexible Monte Carlo programs. Because of its immediate importance for measurements at the LHC's experiments a strong interaction with experimental collaborations is expected. The Institute for Particle Physics Phenomenology (IPPP) in Durham has an outstanding expertise in the calculation of NLO corrections and is therefore an ideal place for this ambitious project.

Publications

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Studentship Projects

Project Reference Relationship Related To Start End Student Name
ST/N50404X/1 01/10/2015 31/03/2021
1772113 Studentship ST/N50404X/1 01/10/2016 31/03/2020 James Whitehead
 
Title pyHepGrid 
Description Tool for distributed computing management geared towards HEP applications. The process of submitting computing 'jobs' to the various different distributed computing systems is traditionally time-consuming and requires users to spend large amounts of time doing repetitive and simple tasks to assemble the relevant material for submission, submit the jobs, and aggregate the output. If a minor mistake is made, the jobs can fail - and in the worst case, will fail having already used some of a finite computing resource. pyHepGrid provides an easy-to-use interface so that users can efficiently manage their jobs, monitor their status, and retrieve output, and contains automated sanity-checks and testing features to reduce the risk that computing time is wasted on failed jobs. 
Type Of Technology Software 
Year Produced 2019 
Open Source License? Yes  
Impact PyHepGrid has been now been used by members of several major particle physics phenomenology collaborations: NNLOJET, Sherpa, HEJ and NNPDF. By streamlining these users' grid computing workflow, it allows the saved time and attention to be more profitably invested elsewhere. 
URL https://github.com/scarlehoff/pyHepGrid
 
Description Celebrate Science, Durham 
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 Local schoolchildren, students and adults came to a large science festival in central Durham; I and other members of the IPPP organised a stand introducing attendees to fundamental particle physics, using engaging resources including a Galton board and the department's neutrino/dark matter detector simulator.
Year(s) Of Engagement Activity 2018
URL https://www.dur.ac.uk/celebrate.science/programme/
 
Description St. Cuthbert's Society Research Forum 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach Local
Primary Audience Postgraduate students
Results and Impact I presented an overview of particle physics and QCD and an introduction to my research to an audience of 40-50 made up primarily of postgraduate students, but sizeable minorities of undergraduates, academics and city residents.

The material presented prompted a range of perceptive questions showing a real interest in fundamental physics from a wide range of audience members, with follow-up questions ranging from those of professional interest from a Chemistry professor to some profound questions about relativity and Noether's theorem.
Year(s) Of Engagement Activity 2017,2018