SEMINARIUM FIZYKI WIELKICH ENERGII

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 27 stycznia (piątek) o godzinie 10:15, w sali B2.38 odbędzie się seminarium, na którym zostanie wygłoszony referat pt.:

„The LUXE – Laser und XFEL Experiment-towards non-perturbative QED”

Referuje: dr hab. Grzegorz Grzelak (IFD UW)

The seminar will introduce LUXE, „Laser Und XFEL Experiment”, currently being developed at DESY in Hamburg, an experiment that aims to use the high-quality electron beam of the European XFEL facility and a high-power optical laser.

The scientific goal of the experiment is to study quantum electrodynamics in the largely unexplored territory, in the regime of strong fields, close to and beyond the Schwinger limit, revealing the non-perturbative face of QED and going beyond the formalism of linear equations of quantum electrodynamics.

The seminar will also introduce the experimental setup:

beam extraction from the European XFEL Linac, requirements for a high power laser and precise detectors optimized to measure electrons, positrons and photons including contribution to the experiment form the University of Warsaw.

Serdecznie zapraszamy

dr hab. Katarzyna Grzelak
prof. dr hab. Jan Królikowski
prof. dr hab. Aleksander Filip Żarneck

SEMINARIUM FIZYKI WIELKICH ENERGII

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 20 Stycznia (piątek) o godzinie 10:15, w sali B2.38 odbędzie się

seminarium, na którym zostanie wygłoszony referat pt.:

„How to see Dark Matter at LHC?”

Referuje: dr Małgorzata Kazana (NCBJ)

Abstract:

During the seminar, the review of searches for Dark Matter at LHC will be given.

Serdecznie zapraszamy

dr hab. Katarzyna Grzelak
prof. dr hab. Jan Królikowski
prof. dr hab. Aleksander Filip Żarneck

SEMINARIUM FIZYKI WIELKICH ENERGII

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 13 Stycznia (piątek) o godzinie 10:15, w sali B2.38 odbędzie się

seminarium, na którym zostanie wygłoszony referat pt.:

„Portrait of the Higgs boson for 10th anniversary of its discovery”

Referuje: : dr hab. Michał Bluj (NCBJ).

Abstract:

A discovery of a Higgs boson was announced by the ATLAS and CMS

experiments 10 years ago. In this talk I will summarise knowledge on its

properties.

Serdecznie zapraszamy

dr hab. Katarzyna Grzelak
prof. dr hab. Jan Królikowski
prof. dr hab. Aleksander Filip Żarnecki

SEMINARIUM FIZYKI WIELKICH ENERGII

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 16 Grudnia (piątek) o godzinie 10:15, w sali B2.38 odbędzie się

seminarium, na którym zostanie wygłoszony referat pt.:

„Latest CMS result on top mass”

Referuje: : dr hab. Artur Kalinowski, prof. UW (IFD UW)

Abstract:

I will present a recent measurement of the top quark mass made by the CMS Collaboration. The measurement is the current most precise single top quark measurement. I will finish with some remarks on the importance of the top mass for the vacuum stability.

Serdecznie zapraszamy

dr hab. Katarzyna Grzelak
prof. dr hab. Jan Królikowski
prof. dr hab. Aleksander Filip Żarnecki

SEMINARIUM FIZYKI WIELKICH ENERGII

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 2 Grudnia (piątek) o godzinie 10:15, w sali B2.38 odbędzie się

seminarium, na którym zostanie wygłoszony referat pt.:

„New T2K Oscillation Results”

Referuje: Kamil Skwarczyński (NCBJ)

Abstract:

T2K is a long-baseline neutrino oscillation experiment, which studies the oscillations of neutrinos from a beam produced using the J-PARC accelerator chain. The neutrino beam propagates over 295 km before reaching the Super-Kamiokande detector, where they can be detected after having oscillated. The ability of the experiment to run with either neutrino beams or anti-neutrino beam makes it well suited to study the differences between the oscillations of neutrinos, in particular to look for a possible violation of CP symmetry in the lepton sector. T2K has produced a new analysis of its first 10 years of data, with improved models to describe neutrino interactions and fluxes as well as additional samples of near and far detector events. We will present the results of the measurement of the parameters describing neutrino oscillations obtained with the new analysis.

Serdecznie zapraszamy

dr hab. Katarzyna Grzelak
prof. dr hab. Jan Królikowski
prof. dr hab. Aleksander Filip Żarnecki

SEMINARIUM FIZYKI WIELKICH ENERGII

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 25 Listopada (piątek) o godzinie 10:15, w sali B2.38 odbędzie się

seminarium, na którym zostanie wygłoszony referat pt.:

„The James Webb Space Telescope – new infrared vision of the early Universe”

Referuje: dr. Darko Donevski, NCN grant holder at the NCBJ/Astrophysics Division BP4

Abstract:

The James Webb Space Telescope (JWST) is the largest space telescope ever launched, and it will be a giant leap forward in our quest to understand the Universe and our origins. Delivery of the first scientific data in the mid-2022 demonstrated unprecedented imaging and spectroscopic capabilities in the near to mid-infrared bands, with a sensitivity that is orders of magnitude higher than current facilities. Undoubtedly, in the years to come, JWST will open a huge, new discovery space in most areas of astronomy and astrophysics. In this seminar I will present the first results and big science questions that JWST observations are expected toanswer. The particular emphasis will be given to the projects related to the galaxies in the early Universe.

Serdecznie zapraszamy

dr hab. Katarzyna Grzelak
prof. dr hab. Jan Królikowski
prof. dr hab. Aleksander Filip Żarnecki

SEMINARIUM FIZYKI WIELKICH ENERGII

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 28 Października(piątek) o godzinie 10:15, w sali B2.38 odbędzie się

seminarium, na którym zostanie wygłoszony referat pt.:

„Neutrino news from summer conferences”

Referuje: dr Joanna Zalipska (NCBJ)

Abstract:

  This seminar will summarize results related to neutrino physics from summer conferences such as Neutrino 2022 and ICHEP 2022. The overview of the Long Baseline neutrino experiments current (T2K, Nova) and future (Hyper-Kamiokande, DUNE) will be presented. On top of it the direct neutrino masses searches will be discussed showing latest results from KATRIN experiment together with plans of future experiments.

Serdecznie zapraszamy

dr hab. Katarzyna Grzelak
prof. dr hab. Jan Królikowski
prof. dr hab. Aleksander Filip Żarnecki

SEMINARIUM FIZYKI WIELKICH ENERGII

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 21 Października(piątek) o godzinie 10:15, w sali B2.38 odbędzie się

seminarium, na którym zostanie wygłoszony referat pt.:

„ECFA workshops on e+e- Higgs/EW/Top factory”

Referuje: prof. dr hab. Aleksander Filip Żarnecki (IFD UW)

Abstract:

Based on the recommendations of the Update of the European Strategy for Particle Physics, the European Committee for Future Accelerators (ECFA) has decided to organise a series of workshops on physics studies, experiment design and detector technologies towards a future electron-positron Higgs/EW/Top factory.

Three Working Groups were established, led by conveners from both experiment and theory, on Physics Potential (WG1), Physics Analysis Methods (WG2) and Detector R&D (WG3). The first community-wide plenary ECFA workshop e+e- Higgs/EW/Top factory took place recently at DESY, Hamburg. I will report on the DESY meeting and the ECFA initiative in general.

Serdecznie zapraszamy

dr hab. Katarzyna Grzelak
prof. dr hab. Jan Królikowski
prof. dr hab. Aleksander Filip Żarnecki

SEMINARIUM FIZYKI WIELKICH ENERGII

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 14 Października(piątek) o godzinie 10:15, w sali B2.38 odbędzie się

seminarium, na którym zostanie wygłoszony referat pt.:

„Studies of hyperon decays using hyperon-antihyperon pairs from J/psi decays”

Referuje: prof. dr hab. Andrzej Kupść  (Uppsala University & BP3 NCBJ)

Abstract:

Hyperon-antihyperon pairs from decays of vector charmonia are spin entangled. Furthermore, if the charmonia are produced in electron-positron collisions the hyperons can be polarized. Millions of the hyperon–antihyperon pairs events are available in the world’s largest data of 10^10 J/psi and 2.7×10^9 psi(2S) collected at the BESIII experiment . The entangled pairs are used for precision determination of hyperon and antihyperon decay amplitudes and to test CP symmetry in the decays. The hyperon CP-symmetry tests are complementary to the direct CP-violation studies in kaon decays. I will present multi-dimensional analysis methods, developed by the Uppsala and Warsaw groups, that make use of the polarization and entanglement to achieve best sensitivity in the hyperon-decay measurements. Recent BESIII results obtained using these methods include studies of J/psi decays into Lambda-antiLambda and Xi- anti Xi+ published in Phys. Rev. Lett. and Nature, respectively. For the cascade decay chain, the exclusive measurement allows for three independent CP tests and determination of the strong and weak phase differences in the decay amplitudes.

Serdecznie zapraszamy

dr hab. Katarzyna Grzelak
prof. dr hab. Jan Królikowski
prof. dr hab. Aleksander Filip Żarnecki

SEMINARIUM FIZYKI WIELKICH ENERGII

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 7 Października (piątek) o godzinie 10:15, w sali B2.38 odbędzie się

seminarium, na którym zostanie wygłoszony referat pt.:

COMPASS – a versatile facility at CERN

Referuje: prof. dr hab. Barbara Badełek  (IFD UW)

Abstract:

The purpose of COMPASS is the study of hadron structure and hadron spectroscopy with high intensity muon and hadron beams.

The Collaboration is formed by about 200 physicists from 25 countries.

The facility was approved 25 years ago and the physics experiments started in 2002  with a muon beam, polarised proton and deuteron targets. These semi-inclusive deep inelastic scattering (SIDIS) reveals a detailed  quark-gluon structure of the nucleon, in particular the gluon polarisation and transverse-momentum-dependent correlations.

The years 2008 and 2009 were dedicated to the hadron spectroscopy programme with pion and proton beams scattering off a liquid hydrogen target and nuclear targets. An unprecedented amount of data was collected and showed subtle details of the light-meson spectrum. A dedicated study of the pion polarisability using Primakoff scattering of pions from heavy nuclei was also performed.

Phase II of COMPASS commenced in 2014 and is primarily devoted to the transverse and 3D structure of nucleons using Deeply Virtual Compton scattering (DVCS), Hard Exclusive Meson Production (HEMP), SIDIS and polarised Drell-Yan (DY) reactions.

I shall repeat a plenary talk which I gave in September 2022 at the „Quarks in Nuclear Physics” conference in Florida (USA).

Serdecznie zapraszamy

dr hab. Katarzyna Grzelak
prof. dr hab. Jan Królikowski
prof. dr hab. Aleksander Filip Żarnecki