Seminars SS 17


Tue 16.05.2017, 16.30 h (28B110)

R. Thorne (UCL)

Parton Distribution Functions at the LHC

I will discuss the importance of the precise knowledge of parton distribution functions (PDFs) for high-energy physics, particularly that at the LHC. I will briefly introduce the background and the different approaches taken to obtaining the PDFs and their uncertainties, and summarise the recent developments, degree of agreement between different groups, and methods of combination of different PDF sets. I will then illustrate the manner in which PDFs and Standard Model predictions are being tested at the LHC, and the manner in which this is leading to further improvements. I will highlight particular challenges with the extreme precision now being achieved for some LHC measurements.


Tue 30.05.2017, 16.30 h (28B110)

S. Söldner-Rembold (University of Manchester)

Neutrino (and other) Physics with Liquid-argon Detectors

The outstanding capability of liquid-argon Time Projection Chambers to detect particle interactions make them one of the most promising technology choices for next-generation neutrino experiments. Several mid-size detectors at Fermilab and CERN will soon demonstrate the potential of the liquid-argon technology, searching for sterile neutrinos and measuring liquid-argon interactions of neutrinos and charged particles. Within a decade, the DUNE experiment in South Dakota will start to address a broad science programme, with the aim to discover CP violation in the neutrino sector, record supernova neutrinos, and search for proton decay. DUNE is the largest particle physics project undertaken world-wide since the LHC construction. I will give an overview of the current status and future discovery potential of the liquid-argon programme.


Tue 06.06.2017, 16.30 h (28B110)

D. Straub (TU München)

Searches for Physics beyond the Standard Model with Flavour

Processes involving flavour-changing neutral currents, like rare decays of B mesons, are strongly suppressed in the Standard Model and thus sensitive to virtual new physics effects. In recent years, several deviations from Standard Model expectations have been observed in such processes, but their interpretation in terms of new physics is complicated by the presence of hadronic uncertainties. This seminar will give an introduction to this field, its current status, main challenges, and prospects at current and future experiments.