Dr Masełek (Stefan Institute, Ljubljana) visited our group and gave a talk on recent advances in machine learning, which have enabled new model-independent approaches to searching for physics beyond the Standard Model at the Large Hadron Collider. This method can be applied beyond HEP (pdf).
The first annual meeting of the multilateral project titled “Bridging Theory and Experiments: Pushing the Boundaries of Neutrino Oscillation Precision Physics” took place in Zagreb (link). Our group represented Biswajit Karmakar (talk Generalized parametrization of PMNS matrix based on SO(3) symmetry, pdf) Janusz Gluza (talk Neutrino oscillations in the context of discrete flavor models, pdf), Marek Michalczyk (talk Texture zero in neutrino mass matrices, pdf), Szymon Zięba (online talk Correlations in oscillation parameters, pdf) and Timo Kärkkäinen (online talk Non-standard interactions, pdf).
MITP Mainz organized a small workshop (participation by invitation – Janusz Gluza) on Electroweak Corrections at Current and Future Accelerators.
In Helsinki, the FCC Week took place. Janusz Gluza presented a talk for the FCC-ee Working Group “Precision Calculation for FCC-ee: Status Plans” (link, pdf).
The next step in the development of the FCC project is the Reference Design Phase and the assembly of the required materials, in preparation for a CERN Council decision on the future HEP machine, foreseen in 2028. Thus, there is a new organization of the FCC groups
Janusz Gluza and Marco Zaro are conveners of the new Precision calculation subgroup. The mandate of the group covers various aspects of precision physics, including:
The activities of our subgroup are closely connected with those of other groups (MC generators, EW, Higgs, …), with which we envisage joint activities, such as (mini-) workshops, schools, etc.
For a full list of working groups, see https://gms.web.cern.ch/, where you can join our group (fcc-ped-physicsgroup-precisioncalculations). Here, you are directed to the group of your interest: https://indico.cern.ch/event/1663323/contributions/7010789/attachments/3256388/5812739/PED_egroups_chart_2026_03_21.pdf
In the Precision Calculation subgroup, we plan to organise talks and discussions on these subjects, with particular focus on new works and/or on topics in response to interests and needs raised by the community. Please follow the links to the events and talks here: https://indico.cern.ch/category/21380/
On 16th April 2026, we participated in the first Polish FCC workshop in IFJ Kraków. The strong attendance (76 registrants), active participation, and substantive discussions clearly showed the need for further integration of the community interested in the FCC programme. Here are details of the programme: https://indico.cern.ch/event/1663323/overview
In the work https://arxiv.org/abs/2603.06571, we have calculated quantum corrections to the muon decay lifetime, indirectly showing that the W-boson mass gets a correction from the 3-loop Feynman diagrams
shifting its mass by +3.14 MeV. Have we reinvented the Pi number 🤔?
Comment by AI: https://gist.science/paper/2603.06571
The pattern of neutrino mixing, usually parameterized by the Pontecorvo-Maki-Nakagawa- Sakata UPMNS matrix, still remains a striking puzzle in particle physics. Why do we use the PMNS matrix?
We (Biswajit Karmakar and Janusz Gluza with Jarosław Duda from Jagiellonian University) discuss another parametrization of the neutrino mixing based on the SO(3) group, which is especially suitable for the CP-conserving case, with phenomenological consequences, in Physics Letters B article https://doi.org/10.1016/j.physletb.2026.140219
The mixing angles for parametrization based on the SO(3) group are quite different:
How is it possible? Think about it, or take a look at the article or the description at Gist.Science.
Two new NCN grants.
dr Nora Salone – „Precision studies of hadron production with CP violating and polarization effects at e+e- colliders within the BESIII collaboration”: 29 810 PLN.
Dr Salone cooperates with BESIII collaboration in China, recent talk from the MTTD conference.
dr Biswajit Karmakar – „Towards a Fundamental Theory of Flavor: Non-Holomorphic Modular Symmetry and Cosmological Probes”: 37 987 PLN. Dr Karmakar will collaborate with Prof. S. F. King from the University of Southampton, UK, publications.
We hosted Prof. Monojit Ghosh from Rudjer Boskovic Institute: Zagreb, HR for a period 3-23 December 2025 within the MAPS project. He presented a seminar on Non-standard interactions at ESSnuSB experiment.
We started a new project entitled Bringing Theory and Experiments Together for Precision Neutrino Physics, with a total funding of CHF 774,883, financed in part by SNSF MAPS (Multilateral Academic Projects) program. Apart from our theoretical and experimental neutrino groups from the University of Silesia, the Polish-Swiss-Croatian collaboration involves scientists and researchers from the University of Geneva (Switzerland) and the Ruder Boškovic Institute (Croatia). Here is a short summary of the project: link.
The European Strategy for Particle Physics (ESPP) took place in Venice with talks and discussion on the future direction of European particle physics in the global context, for a programme, see https://agenda.infn.it/event/44943/overview
National input from members of the high-energy physics communities in CERN’s 25 Member States so far indicate broad support for the FCC programme on account of its outstanding scientific potential and long-term strategic value. From the summary talk by Calin Alexa (direct link https://agenda.infn.it/event/44943/contributions/265700/attachments/137706/207148/ESG%20WG1%20report%20v15.1.pdf)
“I am happy to see that the recommendations of the 2020 ESPP update and their implementation via the FCC Feasibility Study enjoy overwhelming support from the vast majority of the high-energy physics community as well as leading experts,” said Costas Fountas, President of the CERN Council.
Input and recommendation by Poland, co-authored by Janusz Gluza: https://inspirehep.net/literature/2916518
15-19 September 2025 we are organizing the next Matter to the Deepest conference (1975-2025)!
This time in Katowice. Details are here: https://indico.if.us.edu.pl/event/21/
Our team in collaboration with scientists from the USA (University of Virginia and the Space Science Center of the University of Washington) and Germany (Max Planck Institute in Munich) published an article in the prestigious journal Progress in Particle and Nuclear Physics. The work concerns the analysis of models aimed at explaining what types of new symmetries can be used to understand the observed properties of oscillations of three types of neutrinos. The work considers so-called discrete symmetries, such as the A4 symmetry (such symmetries are used in physics, for example, to describe a diamond crystal) or more abstract symmetries based on modular groups https://en.wikipedia.org/wiki/Modular_group. These models imply the existence of new types of particles, which, in addition to describing the properties of masses and quantum mixing states of the known “flavors” of electron, muon and tau neutrinos, can also explain several cosmological observations such as matter-antimatter asymmetry in space (decays of new massive neutrinos) or the problem of dark matter (the paper considers implications derived from the interactions of spinless Higgs particles and additional fermions). The phenomenology of possible processes associated with discrete particle symmetries is very rich. Some symmetries are studied in particle colliders (e.g. LHC) or in the context of observing gravitational waves or exotic nuclear decays (e.g. neutrinoless double beta decay of nuclei). The work was carried out as part of the Opus grant of the National Science Centre “Non-standard neutrinos and CP-violating effects in the leptonic sector” (short description of the project in Polish: https://projekty.ncn.gov.pl/opisy/482538-pl.pdf). On the Polish side, the following participated in the work: Janusz Gluza (team coordinator), Szymon Zięba, Krzysztof Grzanka (PhD students), Biswajit Karmakar (postdoc), Ievgen Dubovyk, Bartosz Dziewit (assistant professors at the Faculty of Science and Technology, University of Silesia). Link to the work in the journal https://www.sciencedirect.com/science/article/pii/S0146641024000309 and the public version of the article in the Inspires HEP high-energy works repository https://inspirehep.net/literature/2715897
The University Newspaper features an interview with Janusz Gluza connected with a new NCN grant and particle physics in general, link
A new project, Precision Studies for particle-collider physics, has received funding from Polish National Science Centre (~3.4 MPLN). The research mainly focuses on calculations and simulations using the Monte Carlo higher-order perturbation effects generators within the Standard Model of particle physics in current and future high-energy accelerators. These calculations will allow the verification of subtle effects predicted by extended theoretical models that attempt to answer still unexplained aspects of particle physics related to the interactions of Higgs particles and their impact on the evolution of the Universe with matter-antimatter asymmetry and the effects of CP symmetry violation, or the generation of masses and neutrino oscillations. The research will be conducted in cooperation with scientists from Germany, Hungary, Switzerland, Ukraine, the UK and the USA.
You can read more about the project on the website of the National Science Centre: https://www.ncn.gov.pl/sites/default/files/listy-rankingowe/2023-06-15-lut7739ikitila/streszczenia/595831-en.pdf
(in Polish:) https://www.ncn.gov.pl/sites/default/files/listy-rankingowe/2023-06-15-lut7739ikitila/streszczenia/595831-pl.pdf
From 8 to 12 January 2024, Janusz Gluza participated in the XXX Cracow EPIPHANY Conference giving a talk on: “Precision Physics at High Energy Colliders and Low Energy Connections”. More extended talk on the subject has been delivered at the Indian Institute of Technology in Guwahati, India (scientific visit 1-13 February 2024).
In October 2023, we welcomed a new member to our research team – Dr. Adam Bzowski, Inspires publications
From 5 to 9 June 2023, Janusz Gluza participated in the FCC Week 2023 in London giving a plenary talk on: “Theoretical calculation strategy“
Janusz Gluza presented talks at the 6th edition of Silesian Science Festival KATOWICE on (quantum) vacuum and the 10th anniversary of the Higgs boson discovery.
We are happy to announce a new book by Ievgen Dubovyk, Janusz Gluza, Gabor Somogyi.
https://link.springer.com/book/9783031142710 , ISBN: 978-3-031-14271-0
Arxiv: https://inspirehep.net/literature/2593456
August 28 – September 8, 2022, Janusz Gluza and Krzysztof Grzanka participated in Corfu 2022, the Standard Model and Beyond workshop, and they gave talks which can be found here.
as in physics, sometimes it’s hard to get to the point.
From July 30 through 6th August Janusz Gluza took part in NuFact 2022, chairing one of the plenary sessions and giving the talk “PMNS and the number of additional neutrino flavors” https://indico.fnal.gov/event/53004/contributions/243136/attachments/158351/207755/NuFact_2022.pdf. This conference was held in Snowbird, Utah, USA, and focused on neutrino physics and colliders. The twenty-third of the series of yearly international workshops started in 1999.
We were at the secondary school LO1 in Rybnik: dr Biswajit Karmakar gave a lecture „Neutrinos and secrets of our Universe” with introduction by prof. Janusz Gluza „Wielkie urządzenia, małe obiekty – krótko o fizyce cząstek elementarnych” – “Big facilities, small objects – shortly about particle physics”. Some photos: link
Together with Bhupal Dev from Washington U. and Garv Chauhan from Louvain U. we prepared a report for the Snowmass 2021 which is on future plans in particle physics. Publication is available at https://inspirehep.net/literature/2052627
We organized PARTICLEFACE: Case studies of analytical and numerical methods of multiloop calculations for future e+e- colliders,
1-5 October 2018 Katowice, Poland https://indico.ific.uv.es/event/3357/overview
