Month: Marzec 2021

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 26 marca (piątek) o godzinie 10:15, odbędzie się seminarium, na którym zostanie wygłoszony referat pt.:

„The KATRIN experiment: neutrino mass measurements with sub-eV sensitivity and future prospects”

Referuje: Dr. Alexey Lokhov (University of Muenster)

Arlsruhe TRItium Neutrino experiment (KATRIN) is searching for the signature of the neutrino mass in the endpoint region of the tritium beta-decay spectrum. KATRIN combines a high-intensity gaseous molecular tritium source with a high-resolution spectroscopy using electrostatic filter with magnetic adiabatic collimation to reach the target neutrino-mass sensitivity of 0.2 eV/c2, improving on the previous measurements by an order of magnitude. With the first science run of KATRIN the previous neutrino mass bounds were improved by a factor of two, with the first upper limit of 1.1 eV/c2 (90% CL).

In this talk an overview of the KATRIN experiment and its very recent results are presented. Our preliminary new results reaching a sub-eV neutrino-mass sensitivity based on the whole 2019 data-set will be discussed. In addition, the talk reports on the KATRIN exploration of interesting BSM physics cases and closes with an outlook on the future prospects of KATRIN.

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.

Join Zoom Meeting

https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09

Meeting ID: 845 1609 6743

Passcode: HEP_UW

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 19 marca (piątek) o godzinie 10:15, odbędzie się seminarium, na którym zostanie wygłoszony referat pt.:

„Status of the ILC project and news from LCWS’2021”

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

In recent years, momentum has been building for Japan to host the International Linear Collider (ILC). High-level discussions have taken place between the US and Japan, and also between European countries and Japan. 2020 Update of the European Strategy for Particle Physics confirmed the need for a Higgs factory as the essential next step for particle physics and also expressed willingness of the European community to collaborate in the ILC. ICFA has taken a major step to focus on requirements to establish an ILC „Pre-Lab” in Japan by setting up the International Development Team (IDT). This team has the mandate to pave the way for an organisation that would be the precursor to an official ILC laboratory. News on the ILC project development and IDT activities have been just presented at the 2021 International Workshop on Future Linear Colliders (LCWS2021). The workshop covers physics, detectors, and accelerator issues related to the high-energy linear electron-positron colliders CLIC and ILC. Many activities of the Warsaw LC group have also been presented.

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.

Join Zoom Meeting

https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09

Meeting ID: 845 1609 6743

Passcode: HEP_UW

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 12 marca (piątek) o godzinie 10:15, odbędzie się seminarium, na którym zostanie wygłoszony referat pt.:

„Ultra-peripheral vector meson photoproduction in heavy-ion collisions in CMS”

Referuje: Marek Walczak (IFD)

In this seminar I will present the first measurement of the total cross-section of the coherent ultra-peripheral photoproduction of the Υ meson in lead-lead collisions at 5.02 TeV. The data used in the analysis has been collected in 2018 by the CMS experiment at the CERN’s Large Hadron Collider. The considered channel is the muon decay of the Υ meson, Υ → μ+μ−. This process is sensitive to the nuclear Parton Distribution Functions for gluons.

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.

Join Zoom Meeting

https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09

Meeting ID: 845 1609 6743

Passcode: HEP_UW

SEMINARIUM FIZYKI WIELKICH ENERGII

 

Dnia 5 marca (piątek) o godzinie 10:15, odbędzie się seminarium, na którym zostanie wygłoszony referat pt.:

„Future Circular Collider – The future of opportunities”

Referuje: dr hab. Marcin Chrząszcz (IFJ PAN)

The FCC-ee is a high-luminosity, high-precision e+e- circular collider. Two separate e+ and e- storage rings with very strong focusing, fed by a full size continuous injector, provide e+e- collision luminosities ranging from (per interaction point) 230 1034 /cm2 /s at the Z pole, 8 1034 /cm2 /s at the ZH production maximum (240 GeV) and 1.7 1034 /cm2 /s at the tt threshold and up to 365 GeV. Two to four interaction points are considered.

The run plan of 15-20 years yields 5 10^12 Z bosons, 10^8 W pairs, 1.3 10^6 Higgs bosons and 10^6 top quark pairs. Thanks to the availability of transverse polarization, the energy calibration at 100 keV precision offers unprecedented precision for measurements of Z and W properties. The possibility of s-channel Higgs production at ECM=125 GeV is under study, giving unique access to the electron Yukawa coupling. These opportunities make the FCC-ee stand out among the other Higgs factory proposals.

Especially at the Z run, considerable challenges await experimenters and theorists, for systematic uncertainties to match the extraordinary available statistical precision.

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.

Join Zoom Meeting

https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09

Meeting ID: 845 1609 6743

Passcode: HEP_UW