Zakład Cząstek i Oddziaływań Fundamentalnych

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 6 grudnia (piątek) o godzinie 11:30, w sali B2.38 odbędzie się seminarium, na którym zostanie wygłoszony referat pt.:

„Latest Results and Status of the LUX-ZEPLIN Dark Matter Experiment”

Referuje: Leah Wolf  (Royal Holloway University of London)

The LUX-ZEPLIN (LZ) experiment is a dark matter direct detection experiment located 4,850 feet underground at the Sanford Underground Research Facility (SURF) in South Dakota. The detector is a dual-phase Time Projection Chamber (TPC) that whose target consists of 7 tonnes liquid xenon target aimed at detecting dark matter interactions, primarily from the highly-motivated candidate – Weakly Interacting Massive Particles (WIMPs), as well as some other phenomena beyond the standard model. LZ continues to constrain parameter-space for WIMP-like dark matter as it acquires more data towards its goal of 1,000 days of live time. This talk will present LZ’s new results from the combined 2022-2024 exposure and the status of the detector.

Serdecznie zapraszamy

dr hab. Katarzyna Grzelak

prof. dr hab. Aleksander Filip Żarnecki

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 29 listopada (piątek) o godzinie 11:30, w sali B2.38 odbędzie się seminarium, na którym zostanie wygłoszony referat pt.:

„ECFA Workshops on e+e- Higgs/Electroweak/Top Factories”

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

Third ECFA Workshop on physics and detectors for future e+e- Higgs/Electroweak/Top Factories took place in October in Paris.

This was the last of the workshop series which should conclude with the ECFA report on the physics at future Higgs factories. I will report on ECFA study in general, selected results presented at the last workshop and on the status of the final report being prepared as an input for the European Strategy for Particle Physics update.

Serdecznie zapraszamy

dr hab. Katarzyna Grzelak

prof. dr hab. Aleksander Filip Żarnecki

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 22 listopada (piątek) o godzinie 11:30, w sali B2.38 odbędzie się seminarium, na którym zostanie wygłoszony referat pt.:

„iThemba Laboratory for Accelerator-Based Sciences (LABS)  „

Referuje: dr Rudolph Nchodu (deputy director of the iThemba LABS, Cape Town)

iThemba LABS is the hub to a vibrant research, human capital development, and collaboration network for nuclear science that includes the South African universities, research institutions and international counterparts.

The iThemba LABS K=200 separated sector cyclotron (SSC), one of the accelerator complex comprising 3 accelerators, has been used for nuclear physics research, particle (neutron and proton) therapy, and radioisotope production since its commissioning in 1986. In the first 30 years of the SSC’s operation, the beam time has been equally divided between the three programs, which severely limited the competitiveness of the nuclear physics research program. iThemba LABS acquired a new 70 MeV cyclotron that will be dedicated to isotope production, which will free up the SSC for research.

Nuclear Physics research at iThemba LABS serves as the backbone of research at iThemba LABS and the research programs in the next 5 to 10 years will be focused on niche areas where the laboratory’s research program will complement the research carried out at cognate laboratories around the world. The Long Range Plan initiated in 2017 aiming for increasing the nuclear physics research capacity as well as the technical R&D and the required human capacity development, will be presented as well as the status of its implementation. The prominent global position that iThemba LABS Facility enjoys and its critical role in coordinating the continental contribution to collaborative initiatives with international nuclear Physics institutions will  be discussed.

Serdecznie zapraszamy

dr hab. Katarzyna Grzelak

prof. dr hab. Aleksander Filip Żarnecki

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 15 listopada (piątek) o godzinie 11:30, w sali B2.38 odbędzie się seminarium, na którym zostanie wygłoszony referat pt.:

„CMS measurement of the W boson mass in proton-proton collisions at √s =13 TeV”

Referuje: prof. dr hab. Krzysztof Doroba (IFD UW)

Precision tests of Standard Model (SM) are very important part of LHC scientific program. Since Higgs discovery and determination of its mass by ATLAS and CMS all the parameters of electroweak (EW) sector of the SM are now constrained by experimental measurements. Established disagreement between W boson mass measurement and SM prediction could be a tip towards physics beyond the SM (BSM). In the seminar the recent W boson mass measurement by Compact Muon Collaboration will be presented (m_W=80 360.2±9.6 MeV) with the special emphasis on its accuracy and the way to achieve it. 

Serdecznie zapraszamy

dr hab. Katarzyna Grzelak

prof. dr hab. Aleksander Filip Żarnecki

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 8 listopada (piątek) o godzinie 11:30, w sali B2.38 odbędzie się seminarium, na którym zostanie wygłoszony referat pt.:

„An experiment for electron-hadron scattering at the LHC”

Referuje: prof. Krzysztof Piotrzkowski (AGH, Krakow)

The proposed LHeC facility will provide electron-proton (nucleus) collisions with (per nucleon) instantaneous luminosities around 10^34 (10^33) cm^-2s^-1 by colliding a 50 GeV electron beam from a highly innovative energy-recovery linac system with the LHC hadron beams, concurrently with other experiments for hadron-hadron collisions. The LHeC scientific programme is very complementary to the HL-LHC one and would also significantly enhance it. In this talk, I will summarize the LHeC research scope and present the status of accelerator and detector designs, and discuss future developments as well as an exciting path for the LHeC realization.

Serdecznie zapraszamy

dr hab. Katarzyna Grzelak

prof. dr hab. Aleksander Filip Żarnecki

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 25 października (piątek) o godzinie 11:30, w sali B2.38 odbędzie się seminarium, na którym zostanie wygłoszony referat pt.:

„Dependence of the radio emission of air showers on the cosmic ray primary particle composition”

Referuje: dr Washington Rodrigues De Carvalho jr.  (IFD,UW)

Abstract: We will start with brief introductions to Cosmic Rays (CR),extensive air showers and their radio emission. We will explore the origins

of the dependence of the air shower development on the primary CR composition and how it affects the radio emission. We will then proceed to

describe in more detail our newest work regarding a strong composition dependence on the measured radio signal amplitudes at ground level. This

simple, yet historically overlooked dependence can be explained in terms of two competing scalings of the measured electric field that depend on the

position of the shower maximum (Xmax) in the atmosphere. This dependence can be used to directly infer the CR primary composition, even on a non-standard

event-by-event basis.

Serdecznie zapraszamy

dr hab. Katarzyna Grzelak

prof. dr hab. Aleksander Filip Żarnecki

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 18 października (piątek) o godzinie 11:30, w sali B2.38 odbędzie się seminarium, na którym zostanie wygłoszony referat pt.:

„Overview of the spin programme of COMPASS”

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

The purpose of the COMPASS facility is a study of hadron structure and spectroscopy with high energy hadron and (polarised) muon beams.

In the spin programme polarised proton and deuteron targets were used in inclusive and semi-inclusive deep-inelastic reactions as well as in the Drell-Yan process. Deeply virtual Compton scattering and hard exclusive meson muoproduction were studied using an unpolarised proton target.

A panorama of COMPASS results on 1D and 3D nucleon structure, based on the invited talk delivered at the „Diffraction and Low-x 2024” conference in Trabia (Italy), will be presented.

Serdecznie zapraszamy

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

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 11 października (piątek) o godzinie 11:30, w sali B2.38 odbędzie się seminarium, na którym zostanie wygłoszony referat pt.:

„Report from the NEUTRINO24: XXXI International Conference on Neutrino Physics and Astrophysics”

Referuje: dr Magdalena Posiadała-Zezula (IFD,UW)

An overview of the  most interesting results presented at the NEUTRINO24 conference will be presented.

Serdecznie zapraszamy

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

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 4 października (piątek) o godzinie 11:30, w sali B2.38 odbędzie się seminarium, na którym zostanie wygłoszony referat pt.:

„Report from the ICHEP-2024:42nd International Conference on High Energy Physics”

Referuje: dr hab. Grzegorz Grzelak (IFD,UW)

A subjective overview of most interesting results brought to the ICHEP-2024 conference will be presented.

Serdecznie zapraszamy

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

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 14 czerwca (piątek) o godzinie 10:15, w sali B2.38 odbędzie się seminarium, na którym zostanie wygłoszony referat pt.:

„Latest Results from Tau Neutrino Appearance Measurements at Super-Kamiokande”

Referuje: Maitrayee Mandal (NCBJ)

The Super-Kamiokande (SK) experiment, a water Cherenkov detector located in Japan. Since 1996, SK has been collecting data on muon and electron neutrinos being produced by cosmic rays in the atmosphere. Tau neutrinos are expected to appear in this flux of atmospheric neutrinos due to neutrino oscillations. In this seminar, I will discuss the measurements of tau neutrino appearance covering an exposure of 484 kton-years at SK, with which, we exclude the hypothesis of no tau neutrino appearance at 4.8 sigma.

Serdecznie zapraszamy

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