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12-1pm: Lunch and discussion time (main restaurant, R22)
1-2pm: Luca Panizzi, "Monte Carlo event database for deconstructing signals of new physics at colliders"
Multiple observations of phenomena which cannot be explained in the Standard Model suggest that we need new physics beyond what we already know. The proliferation of theories in the last decades and the absence of direct observation of new phenomena at the LHC suggests to develop analysis strategies as model-independent as possible, yet suitable to be applied in experimental searches at current or next-generation colliders. One of the critical points in performing this kind of phenomenological analyses is that, very often, large parameter scans are necessary: intensive and often redundant MC simulations have to be performed to cover relevant regions of signal parameter space and achieve enough accuracy in the determination of signal features. On the other hand, disk space and computing time are often limited, and the environmental impact of performing such computations is almost never taken into consideration. There is a growing need to devise strategies to optimise data production and share resources in the HEP community, both theory and experiment. I will describe a framework which allows such approach, where simulated signal samples are deconstructed into complete sets of basic elements to be combined a posteriori to perform different analysis. The framework is modular, collaborative, flexible and resource-friendly. I will describe it through concrete examples for specific phenomenological analyses and indicate possible short- and long-term developments and applications.
2-2.30pm: Break and discussion time
2.30-3.30pm: Shankha Banerjee, "Probing physics beyond the Standard Model: Precision physics and unconventional signatures"
In the absence of direct evidence for physics beyond the Standard Model (SM) of particle physics, Effective Field Theories (EFTs) emerge as powerful frameworks for exploring potential new phenomena. As the Large Hadron Collider (LHC) continues to amass data, the significance of precision physics becomes increasingly evident. By concentrating on the high-energy parameter space of correlated bosonic processes, we will demonstrate how certain blind directions in new physics can be disentangled during the High Luminosity Run of the LHC. Furthermore, we will highlight the critical role of incorporating next-to-leading-order electroweak corrections in background processes to accurately determine constraints on SMEFT parameters, exemplified by the $W^+W^-$ production process.
In the second part of my talk, I will explore a complementary approach to searching for new physics. This involves investigating scenarios where long-lived particles decay inside various parts of the detector, with their daughter particles traversing backwards in the direction of the beam pipe. I aim to underscore the potential significance of such search channels for uncovering new physics.
3.30-4pm: Further discussion time
Both seminars will be held in R61 CR3 at RAL. Please come in person if you can, but a Zoom connection is also available. Password: 067286.