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Experimental High Energy Physics Group (HEP-ex)

The Experimental High Energy Physics Group at ICTEA is focused on the study of the fundamental constituents of matter. Members of the group have been involved for mor than twenty years in some of the most relevant particle physics detectors, such as DELPHI, CDF and, more recently, CMS, that work or have worked in colliders such as LEP, Tevatron and the LHC (Large Hadron Collider).

The main grop activity is currently concentrated on the CMS detector at the LHC (CERN) with a broad range of activities on analysis, physics object recontruction, software development and instrumentation.

The scientific exploitation of the data collected by the CMS experiment in different campaigns (runs) is oriented to measure the properties of fundamental particles and interactions in the context of the Standard Model (SM), as well as to the search for new physics beyond the SM, like dark matter. These studies are preformed in collaboration with other international institutes and are focused on processes involving top quarks and the Higgs boson, usually in final states with isolated leptons.

On the other hand, we are involved, both in instrumentation operation and development in the context  fo the Drift Tubes (DT), part of the CMS muon spectrometer, and in the design of level 1 trigger algorithms for the detector. Most of this tasks are part of the needed activities to upgrade CMS to the conditions expected in the second phase of LHC operations: the so-called High Luminosity LHC (HL-LHC).

We continuously use and develop artifical Intelligence techniques, including machine learning and deep learning algorithms, not only in physics analysis, but also in pattern recognition strategies for the trigger upgrade, that, furthermore, are being ported to FPGA processors.

To succesfully perform all the work described above the group has built a computing infrastructure integrated in the Scientific Computing Centre (C3) of the University of Oviedo with 500 computing cores and 200 TB of disk space.

Main lines of research:

  • Data analysis.
    • Associated Higgs boson production to other particles (ttH).
    • Top quark production (top-antitop pair production, tW, ttW).
    • Dibosonic production (WZ).
    • Supersymmetric particle (stop) and dark matter searches.
  • Instrumentation.
    • Preparation of muon subdetectors for the datataking Phase 2 (HL-LHC).
    • Re-design of both hardware and software of the detector's trigger.
    • Longevity studies in muon subdetectors.
    • Online sofware for DT control and monitoring for phase 2.
    • CMS detector operation & maintenance during datataking periods.
    • Muon carachterisation (identification and reconstruction) studies.

 

Research group webpage: www.hep.uniovi.es.

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