Projects / Programmes source: ARIS

Experimental Elementary Particle Physics

Research activity

Code Science Field Subfield
1.02.00  Natural sciences and mathematics  Physics   

Code Science Field
P210  Natural sciences and mathematics  Elementary particle physics, quantum field theory 

Code Science Field
1.03  Natural Sciences  Physical sciences 
experimental physics, particle physics, accelerators, detectors, CERN, DESY, KEK, ATLAS, Belle, DELPHI, HERA-B, leptons, quarks, interactions, Standard model, super-symmetry, Higgs boson, CP symmetry, mesons, semiconductor detectors, Cherenkov detectors, medical imaging
Evaluation (rules)
source: COBISS
Researchers (48)
no. Code Name and surname Research area Role Period No. of publicationsNo. of publications
1.  25636  PhD Matej Batič  Physics  Researcher  2009 - 2012  23 
2.  34428  PhD Jyoti Prakash Biswal  Physics  Junior researcher  2011 - 2014  152 
3.  23569  PhD Urban Bitenc  Physics  Researcher  2009  201 
4.  22457  PhD Ilija Bizjak  Physics  Researcher  2009 - 2011  340 
5.  15641  PhD Marko Bračko  Physics  Researcher  2009 - 2014  833 
6.  29916  PhD Hassan Chagani  Physics  Researcher  2009 - 2010  14 
7.  09081  PhD Vladimir Cindro  Physics  Researcher  2009 - 2014  1,655 
8.  31189  PhD Maksym Deliyergiyev  Physics  Junior researcher  2009 - 2014  306 
9.  24260  PhD Irena Dolenc  Physics  Researcher  2009 - 2010  272 
10.  29519  PhD Rok Dolenec  Physics  Junior researcher  2009 - 2012  88 
11.  15716  Jurij Eržen    Technical associate  2009 - 2014 
12.  12092  PhD Boštjan Golob  Physics  Researcher  2009 - 2014  783 
13.  18277  PhD Andrej Gorišek  Physics  Researcher  2009 - 2014  1,417 
14.  33272  PhD Milan Grkovski  Physics  Researcher  2010 - 2013 
15.  36331  Luka Kanjir  Physics  Junior researcher  2013 - 2014  213 
16.  01108  PhD Gabrijel Kernel  Physics  Researcher  2009 - 2011  437 
17.  18278  PhD Borut Paul Kerševan  Physics  Researcher  2009 - 2014  1,412 
18.  33350  Jure Klučar  Physics  Junior researcher  2010 - 2014  43 
19.  11598  PhD Samo Korpar  Physics  Researcher  2009 - 2014  863 
20.  15642  PhD Gregor Kramberger  Physics  Researcher  2009 - 2014  1,570 
21.  08725  PhD Peter Križan  Physics  Researcher  2009 - 2014  1,052 
22.  27794  Dejan Lesjak    Technical associate  2009 - 2014 
23.  37476  PhD Matic Lubej  Physics  Junior researcher  2014  60 
24.  28481  PhD Boštjan Maček  Physics  Researcher  2009 - 2014  1,038 
25.  12313  PhD Igor Mandić  Physics  Researcher  2009 - 2014  1,553 
26.  04361  Erik Margan    Technical associate  2009 - 2014  35 
27.  26577  PhD Liza Mijović  Physics  Junior researcher  2009 - 2010  1,199 
28.  04763  PhD Marko Mikuž  Physics  Head  2009 - 2014  1,703 
29.  37478  PhD Manca Mrvar  Physics  Junior researcher  2014  89 
30.  37479  PhD Miha Muškinja  Physics  Junior researcher  2014  698 
31.  36339  PhD Tara Nanut  Physics  Junior researcher  2013 - 2014  98 
32.  16354  PhD Rok Pestotnik  Physics  Researcher  2009 - 2014  749 
33.  30884  PhD Marko Petrič  Physics  Junior researcher  2009 - 2014  189 
34.  11775  PhD Tomaž Podobnik  Physics  Researcher  2009 - 2014  425 
35.  33327  PhD Eva Ribežl  Physics  Junior researcher  2010 - 2014  49 
36.  29541  PhD Peter Smerkol  Physics  Junior researcher  2009 - 2012  101 
37.  36349  Grygorii Sokhrannyi  Physics  Junior researcher  2013 - 2014  358 
38.  01104  PhD Aleš Stanovnik  Physics  Researcher  2009 - 2014  213 
39.  03947  PhD Marko Starič  Physics  Researcher  2009 - 2014  786 
40.  21552  PhD Andrej Studen  Physics  Researcher  2009 - 2014  134 
41.  28721  MSc Aleš Svetek  Physics  Technical associate  2011 - 2013  22 
42.  32169  PhD Luka Šantelj  Physics  Researcher  2009 - 2014  315 
43.  35482  Tina Šfiligoj  Physics  Junior researcher  2012 - 2014  520 
44.  16409  PhD Matevž Tadel  Physics  Researcher  2009 - 2011  15 
45.  34454  PhD Elvedin Tahirović  Physics  Junior researcher  2011 - 2014  12 
46.  31187  PhD Andrii Tykhonov  Physics  Junior researcher  2009 - 2013  259 
47.  25620  PhD Anže Zupanc  Physics  Researcher  2009 - 2014  349 
48.  12750  PhD Dejan Žontar  Physics  Researcher  2009 - 2014  351 
Organisations (4)
no. Code Research organisation City Registration number No. of publicationsNo. of publications
1.  0106  Jožef Stefan Institute  Ljubljana  5051606000  92,005 
2.  0794  University of Maribor, Faculty of Chemistry and Chemical Engineering  Maribor  5089638012  13,201 
3.  1538  University of Ljubljana, Faculty of Electrical Engineering  Ljubljana  1626965  28,024 
4.  1554  University of Ljubljana, Faculty of Mathematics and Physics  Ljubljana  1627007  34,558 
The research is devoted to measurements in the field of elementary particles, to reveal the ultimate building blocks of matter and the nature of interactions between them. Experiments are carried out at international centres for particle physics within four collaborations: ATLAS and DELPHI at CERN near Geneva, HERA-B at DESY in Hamburg and Belle at KEK in Tsukuba. The aim of the experiments for the next five year period is to complete the remaining analyses of data at DELPHI and HERA-B, to pin down with precision the parameters of CP violation and rare decays of B mesons at Belle and to open up the 1 TeV energy range with ATLAS at the Large Hadron Collider in search for the Higgs particle and the appearance of super-symmetric particles or other extensions of the Standard model. These data should resolve the remaining open questions of the Standard model such as the origin of mass and should set firm directions to a unified theory beyond. Advanced technology employed in the experiments will be exploited to build novel cameras for medical imaging. Our participation in the first large-scale deployment of the GRID technology for LHC computing by setting up a GRID node should provide the seed application of this all-promising computer paradigm in Slovenia.
Significance for science
The described research programme represents a challenging task at the very frontier of contemporary scientific endeavour, utilizing vast human and financial resources and stretching or even extending existing technologies to render the experiments possible. The proposed experiments have both been heavily scrutinized, approved, and now followed up by research committees, composed of leading experts from the field and beyond. They represent a joint effort of the global scientific community, and are constantly monitored by scientists as well as by the authorities that are funding them. Their task is to deepen our insight into constituents of matter and the forces acting between them. In this quest accelerators of highest energies or with special properties are used, to probe high energy densities as they existed a glimpse after the Big Bang that created the Universe. The Standard model of electroweak and strong interactions is one of the most celebrated theories of our time, a theory that was probed to its limits by the experiments in this research programme. Moreover, the last missing ingredient / the Higgs boson, was discovered in the scope of the programme. These experiments have, each in their own, complimentary way, a good chance of finding signatures of physics beyond the Standard model, be it the predicted and long awaited supersymmety or some more exotic realization of physics at a larger energy scale. One of important unsolved questions of contemporary science is why we live in a universe in which the matter (particles) completely dominates over the antimatter (antiparticles). Already in 1967 the Russian physicist A. Saharov suggested three necessary conditions for such an asymmetric universe evolution. One of those is the violation of the CP symmetry, which can be measured in the world of subatomic particles. Another condition, the violation of the baryon number conservation, also belongs to that area of research. Measurements with the Belle detector in the past period of this research programme offered very precise determinations of the CP violation in the system of B mesons and represent another achieved milestone in the field. However, the measured values of the Cabbibo-Kobayashi-Maskawa matrix elements which within the SM parameterize the CP violation show that the observed magnitude of violation is significantly too small to describe the asymmetric universe. Unknown sources of the CP violation must exist, related to new particles and processes, commonly grouped under the term New Physics. A discovery of those may bring an answer to the question of the universe asymmetry as observed nowadays. The measurements at both, the energy and intensity frontier, posses also a more widespread importance. If existing, the New Physics processes would cause a large change in understanding the structure of the world we live in. Consider for example the supersymmetric extensions of the SM, based on string theories. One can draw similarities in the impact that a possible experimental evidence for these models would have to the one of the relativistic theory. As the latter changed the reasoning about the world by introducing a time dimension as an equivalent to the three spatial dimensions, also the supersymmetric theories would introduce ten spatial dimensions instead of only three (additional dimensions would not be infinite as is the case with the familiar ones but rather shrunk to the sizes many orders of magnitude smaller than the size of the hadrons). While the LHC collider could enable experimental evidence for the existence of new particles (confirming the qualitative correctness of many beyond the SM theories) the precision measurements to be performed with the Belle-II detector will differentiate among these models and by that enable determination of the so far unknown particle properties.
Significance for the country
Participation of Slovenian science in big collaborative international projects, exploring the frontiers of science, is of vital importance for the development of Slovenia. Carrying out research under equal terms with their colleagues from all over the world enables Slovenia and its researchers to: - participate in top research projects in one of the most propulsive fields of science, - publish in the most renowned scientific journals and take part in top-class international conferences, - ease formation of young researchers in international collaboration and competition with their fellow scientists from all around the world, - transfer research knowledge and experience into education at university and post-graduate level, - access and provide hands-on experience with the ultimate technology in the fields of detectors, electronics and computing, - transfer the applied technologies to Slovenia, - apply know-how to other fields of science and technology, - provoke participation of Slovenian industry in development, production and supply of high-tech products. The access to technology programmes at CERN as well as tendering for high-tech orders for the accelerator programme are severely hindered by the fact that Slovenia, in contrast to the remaining Middle-European states, is not yet a member state of CERN. The successful conclusion of ongoing negotiations for associate membership should remedy this, and significantly boost the socioeconomic return Exposure to top-level technology, many times even in the phase of its development are crucial in the formation of young researchers with a high innovation potential, as well as for senior scientists to keep up with the development of the technology and transfer this knowledge to their younger colleagues and students. The contacts established in collaborations often lead to participation in technology projects beyond the scope of the original scientific goal. The development of new computational methods in combination with distributed data processing is expected to stimulate the development of other branches of science where large computing capacities and/or computing simulations are needed (computing, informatics, meteorology, statistics) and in the final instance also significantly contribute to the development of the informatics infrastructure. As an example one can stress, that the world wide web (WWW) was developed at CERN in early 90's for the needs of LHC information exchange. To the present day it has become a new branch of information technology, with associated turnover counted in trillions. Similar predictions are also being made for the development of the distributed computing (Grid), which has been developed and is exploited for LHC computing.
Most important scientific results Annual report 2009, 2010, 2011, 2012, 2013, final report, complete report on dLib.si
Most important socioeconomically and culturally relevant results Annual report 2009, 2010, 2011, 2012, 2013, final report, complete report on dLib.si
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