My research is focused on searches for new fundamental particles which are very weakly-interacting. Motivated by the lack of evidence for new heavy particles, I proposed the Search for Hidden Particles (SHiP) experiment to search for light, new particles in 2013 and this is currently my main research activity. I am also involved in the LHCb experiment where I served as spokesperson from 2008-2011 and prior to that led the LHCb calorimeter project 1998–2008. I previously worked on the HERA-B calorimeter project 1994–1999.
The SHiP experiment will search for a very wide range of light and weakly interacting particles that can solve many of the major problems in particle physics. Theoretical models which propose such light new particles can generate the matter-antimatter asymmetry we observe in the Universe, explain the pattern of neutrino masses and mixing and provide candidates for the dark matter that we think makes up a large fraction of the matter in the Universe. After proposing SHiP in 2013 I was elected to lead the collaboration and the experiment has gained significant traction in the particles physics community. We have grown from 16 authors of the original `Letter of Intent' to 250 authors from 46 institutes in 16 countries. I have led the design of the experiment and the production of the Technical Proposal and detailed Physics Case which have both been reviewed and approved by the relevant committees at CERN. Significant effort has also gone into designing the required facilty. I am now leading the preparation of a Comprehensive Design Report which will form input to the European Strategy update in 2020, where a decision will be taken on whether to build the experiment and working to find new avenues to expand the physics and fruther strengthen the case for the experiment.
As spokesperson for LHCb, I led one of the major experiments at CERN's Large Hadron Collider with around 700 physicists. I was responsible for the overall strategy of the experiment and managed the detector construction, commissioning and the first data-taking. I also intiated the programme towards the first major physics analyses and setup the analysis working groups. Before leading the collaboration my research interest was primarily focused on rare decays where I worked on e.g. the B->mumu analysis, where we found the first evidence for this deacy which has been sought for more than 30 years. This analysis was recently combined with that of the CMS collaboration and published in Nature. My research in this area was done in collaboration with the search engine company, Yandex, applying their machine learning tools used to place adverts to signal-background separation in particle physics. I also initated LHCb's searches for new, light particles - for example, searching for new Majorana neutrinos and new scalar and pseudoscalar particles in decays like B->4mu.
Finally, I have advised various international laboratories on scientific policy having served on committees including the INFN scientific committee at LNF (Italy), the Belle Advisory Committee at KEK (Japan) and CERN's Scientific Policy and Large Hadron Collider committees.
et al., 2022, Study of Z Bosons Produced in Association with Charm in the Forward Region, Physical Review Letters, Vol:128, ISSN:0031-9007
et al., 2022, Evidence for a New Structure in the J/psi p and J/psi(p)over-bar Systems in B-s(0) -> J/psi p(p)over-bar Decays, Physical Review Letters, Vol:128, ISSN:0031-9007
et al., 2022, Measurement of prompt charged-particle production in pp collisions at root s=13 TeV, Journal of High Energy Physics, ISSN:1029-8479
et al., 2022, Analysis of Neutral B-Meson Decays into Two Muons, Physical Review Letters, Vol:128, ISSN:0031-9007
et al., 2022, Measurement of chi(c1) (3872) production in proton-proton collisions at root s=8 and 13 TeV, Journal of High Energy Physics, ISSN:1029-8479