Month: Maj 2020

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 29 maja (piątek) o godzinie 10:15, odbędzie się seminarium, na którym zostanie wygłoszony referat pt.:

Prospects of searches for long-lived SUSY and doubly charged particles with MoEDAL experiment

Referuje: mgr Rafał Masełek (IFT)

Abstract:

The Monopole & Exotics Detector at the LHC (MoEDAL) is a small experiment designed to search for highly ionising avatars of a New Physics. Its main goal is to study the possible existence of magnetic monopoles, but the physics program defines over 34 distinct scenarios, targeting extra dimensions, new symmetries, topological particles and Dark Matter.

Currently, MoEDAL experiment is being upgraded to prepare for Run-3 data taking period. In my talk, I present the prospects of searches for New Physics after the upgrade. I discuss detection reach for various types of long-lived Supersymmetry and doubly charged particles, and I compare it to the results by ATLAS and CMS.

Serdecznie zapraszamy

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

The meeting will take place on zoom.us platform.

Zoom meeting link: https://zoom.us/j/176261850

https://us02web.zoom.us/j/176261850?pwd=cWgzMkwvVjBTSm5ObTFMSnBPTndIQT09

Zoom meeting ID: 176 261 850

Password: 8z2bfx

SEMINARIUM FIZYKI WIELKICH ENERGII

 

Dnia 22 maja (piątek) o godzinie 10:15, odbędzie się seminarium, na którym zostanie wygłoszony referat pt.:

 

Modern techniques of ultra-high energy cosmic rays detection.

 

Referuje: dr hab. Jarosław Stasielak (IFJ)

Abstract:

Studies on ultra-high energy cosmic rays, those exceeding energy $10^{18}$ eV, are conducted with giant ground-based detectors recording extensive air showers (cascades of secondary particles) induced by cosmic ray particles in the atmosphere. Over recent years, these studies have dramatically advanced our understanding of ultra-high energy cosmic rays. Nevertheless, the results obtained so far neither allow us to determine the sources of these most energetic particles we know in the Universe nor to explain the origin of the observed cosmic ray flux suppression above $4\times 10^{19}$ eV. The explanation of these puzzles is one of the most important goals of modern astrophysics. At the same time, the results obtained indicate that further advances in research on ultra-high energy cosmic rays require improving measuring capabilities of detectors. Therefore, there is a special need to search for new experimental solutions to improve the accuracy of measurements of extensive air showers, while reducing the costs of construction and operation of detectors. I will present modern techniques for the detection of ultra-high energy cosmic rays, both classic well-proven methods as well as the new radio detection method, intensively developed over the last decade, which is currently considered the most promising technique. As examples of works on alternative methods of extensive air shower detection, the microwave and radar detection techniques will be discussed. Also I will present the main goals and plans for the upgrade of the Pierre Auger Observatory — the largest detector of ultra-high energy rays.

Serdecznie zapraszamy

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

The meeting will take place on zoom.us platform.

Zoom meeting link: https://zoom.us/j/176261850

https://us02web.zoom.us/j/176261850?pwd=cWgzMkwvVjBTSm5ObTFMSnBPTndIQT09

Zoom meeting ID: 176 261 850

Password: 8z2bfx

SEMINARIUM FIZYKI WIELKICH ENERGII

 

Dnia 15 maja (piątek) o godzinie 10:15, odbędzie się seminarium, na którym zostanie wygłoszony referat pt.:

 Do Kaons change their mass inside hot and dense nuclear matter?

 Referuje: dr hab. Krzysztof Piasecki (IFD UW)

Abstract:

According to QCD, strong interactions of a hadron with virtual quark-antiquark pairs in the vacuum are the process responsible for the acquisition of most of hadron’s mass from the sum of current quark masses. During the relativistic collision of heavy ions the reverse process should occur, called the partial restoration of chiral symmetry. A hadron in hot and dense nuclear matter should change its basic properties like mass and decay constant with respect to the well known values in vacuum.

Kaons produced in heavy ion collisions around threshold for their production in NN collision appear to be a good probe of these effects.

First comparisons of experimentally found phase space distributions of kaons to the transport model calculations suggested a clear sensitivity to this effect. Meanwhile the theoretical predictions suggested that the mass change should be not only density-dependent, but also momentum-dependent. In the seminar these comparison will be presented.

However, data from collisions around strangeness threshold published recently by HADES and FOPI suggest a much broader and complex landscape. Any extraction of possible changes of K- mass has to account for the downfeed from Phi meson decay. Also, comparisons for K0s and Lambda emitted from Au+Au at 1.2A GeV show that the model description is still not fully consistent.

Serdecznie zapraszamy

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

The meeting will take place on zoom.us platform.

Zoom meeting link: https://zoom.us/j/176261850

https://us02web.zoom.us/j/176261850?pwd=cWgzMkwvVjBTSm5ObTFMSnBPTndIQT09

Zoom meeting ID: 176 261 850

Password: 8z2bfx

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 8 maja (piątek) o godzinie 10:15, odbędzie się seminarium, na którym zostanie wygłoszony referat pt.:

ELITPC: toward studying nuclear reactions at astrophysical energies

Referuje: mgr Mateusz Fila (IFD UW)

Abstract:

In the joint effort of several members of the Institute of Experimental Physics at the Faculty of Physics, University of Warsaw an active target TPC with electronic readout – ELITPC – is being developed. The detector is suited for studying nuclear reactions of the astrophysical interest at the stellar relevant energies. I will present the general detector design, used techniques and done developments as well as describe ongoing works and plans for the near future.

Serdecznie zapraszamy

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

The meeting will take place on zoom.us platform.

Zoom meeting link: https://zoom.us/j/176261850

Zoom meeting ID: 176 261 850