SEMINARIUM FIZYKI WIELKICH ENERGII

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

seminarium, na którym zostanie wygłoszony referat pt.:

„LHCb reborn: the start of a new era”

Referuje: Prof. Chris Parkes (University of Manchester (GB))

Abstract:

The Large Hadron Collider-beauty (LHCb) experiment completed its initial operating period (2010-2018) and has published over 600 scientific papers. Recent highlights of the physics output will be reviewed. The next era is now starting for LHCb, with the Upgrade I experiment having been installed. This is a major upgrade which will allow a significant increase of instantaneous luminosity and improve efficiencies and flexibility through the introduction of a fully software based trigger at 40MHz. Beyond this the collaboration is planning the Upgrade II for the 2030s, an ambitious flavour physics experiment at the HL- LHC, and a larger scale project than previously undertaken by LHCb. This will use a range of novel technological developments with many opportunities for the involvement of new collaborators in the research, design and construction activities

Serdecznie zapraszamy

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

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 03 czerwca (piątek) o godzinie 10:15, w sali B2.38 odbędzie się

seminarium, na którym zostanie wygłoszony referat pt.:

„New description of neutrino flavour evolution in solar matter — oscillations or no oscillations?”

Referuje: Prof. dr hab. Jacek Ciborowski

Abstract:

During the seminar I will present new analysis performed with ZEUS data on exclusive Assuming that the interacting neutrino and the solar matter can be treated as an open quantum system we formulate a formalism of neutrino state evolution according to a quasilinear extension of the von Neumann equation. We broaden the classical linear Wolfenstein formalism (MSW effect) by means of reinterpreting the results in terms of the quantities appropriate for the quasilinear approach. We show that the dynamics of the neutrino evolution („flavour conversion”) is effectively governed by the distance of the evolving system to the structural instability point of the evolution equation. We obtain similar predictions for the averaged neutrino survival probability measured on Earth in both approaches, differing inside the Sun where the quasilinear evolution predicts a suppression of oscillations. A nonzero mean energy transfer between the neutrino and the Sun supports the initial assumption. We also discuss the speed of the state evolution in both approaches. Ways to test on Earth the quasilinear hypothesis will be mentioned.

Serdecznie zapraszamy

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

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 27 maja (piątek) o godzinie 10:15, w sali B2.38 odbędzie się

seminarium, na którym zostanie wygłoszony referat pt.:

„Measurement of the cross-section ratio σ(ψ(2S)) / σ(J/ψ(1S)) in exclusive photoproduction at HERA.”

Referuje: dr hab. Grzegorz Grzelak

Abstract:

During the seminar I will present new analysis performed with ZEUS data on exclusive vector meson photoproduction – measurement of the cross section ratio of two charmonia states: ψ(2S) and J/ψ(1S). The analysis was performed using muonic decay channels of the investigated vector mesons.

The ratio of their production cross sections has been measured as a function of W (photon–proton centre-of-mass energy) and |t| (squared four-momentum transfer at the proton vertex) and compared to previous data in photoproduction and deep inelastic scattering and with predictions of QCD-inspired models of exclusive vector-meson production.

Serdecznie zapraszamy

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

SEMINARIUM FIZYKI WIELKICH ENERGII

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

seminarium, na którym zostanie wygłoszony referat pt.:

„Looking forward to new physics and neutrinos at the LHC and beyond.”

Referuje: dr Sebastian Trojanowski (NCBJ)

Abstract:

The search for new physics and studying the properties of the Standard Model (SM) neutrinos are among the main frontiers in contemporary particle physics. In particular, new physics searches at the Large Hadron Collider (LHC) have traditionally been performed in the high-pT region. If new particles are light and weakly-coupled, however, this focus may be misguided: light particles are typically highly concentrated within a few mrad of the beam line. This opens up a novel direction in the LHC searches focusing on sub-GeV beyond the SM species and neutrino measurements, which will be initiated by the FASER experiment during Run 3. In the talk, we will discuss the prospects of these and other related efforts that can extend towards the High-Luminosity phase of the LHC in the recently proposed Forward Physics Facility (FPF).

Serdecznie zapraszamy

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

SEMINARIUM FIZYKI WIELKICH ENERGII

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

seminarium, na którym zostanie wygłoszony referat pt.:

„DIS landscape 2022 – a personal view”

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

Abstract:

For the last 50+ years the Deep Inelastic Scattering is a source of our knowledge concerning properties of building blocks of nearby matter:

nucleons and nuclei. DIS has supplied a wealth of astonishing discoveries and induced a development of the theory of strong interactions, the (perturbative) Quantum ChromoDynamics.

A panorama of contemporary knowledge and problems concerning the free- and bound nucleon structure will be given and directions of future investigations and available tools will be presented.

Serdecznie zapraszamy

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

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 29 kwietnia (piątek) o godzinie 10:15, w sali B2.38 odbędzie się

seminarium, na którym zostanie wygłoszony referat pt.:

„The NOvA Experiment and Neutrino Oscillations”

Referuje: Dr Tomas Nosek (NCBJ)

Abstract:

NOvA is a two detector long-baseline neutrino oscillation experiment using Fermilab’s 700 kW NuMI neutrino beam. It studies the disappearance of muon (anti)neutrinos and the appearance of electron (anti)neutrinos in the beam over a distance of 810 km between the detectors.
The experiment has made over 4σ-significant observation of electron antineutrino appearance in muon antineutrino beam and constrained the oscillation parameters |∆m2 32|, sin2 θ23, and δCP. In this seminar, I will present the main features of the NOvA experimental setup and the neutrino oscillation analysis within the standard paradigm of three neutrinos mixing. I will point out the key differences to the similar T2K experiment and its complementarity. I will review the 2020 results of NOvA and T2K and remind the potential of their combined analysis, which has the power to break the degeneracies of the individual measurements. By continuing to collect data before the dawn of next-generation long-baseline experiments in the late 2020s, the statistical uncertainty will be reduced, and certain physics milestones might be within reach. To that end, it is vital to understand the major sources of systematic uncertainties and their correlations for both the interpretation and precision of the results and for further improvements of the analyses.

Serdecznie zapraszamy

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

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 22 kwietnia (piątek) o godzinie 10:15, w sali B2.38 odbędzie się

seminarium, na którym zostanie wygłoszony referat pt.:

„The b-physics with the CMS experiment – an update”

Referuje: dr hab. Marcin Konecki, prof. UW

Abstract:

CMS is a general purpose experiment at the LHC, designed for a rich physics program that includes b-physics studies.
Selected recent CMS results in b-physics will be presented: measurement of CP-violation phase Phi_s, results on B^0/B^0_s
decaying to mu^+ mu^- and observations of new states and decay modes in b-sector.

Serdecznie zapraszamy

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

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 08 kwietnia (piątek) o godzinie 10:15, w sali B2.38 odbędzie się

seminarium, na którym zostanie wygłoszony referat pt.:

„Digital Signal and Image Processing in Jagiellonian Positron Emission
Tomography”

Referuje: Dr Lech Raczyński (NCBJ)

Abstract:

This presentation is devoted to introduction of data processing algorithms in Jagiellonian PET (J-PET) scanner. In contrast to state-of-the-art PET scanners, in the J-PET detector multiple small inorganic crystal scintillators are replaced with a long plastic scintillator strips. The operational principles of the J-PET scanner are similar to conventional tomographs, except that the highly accurate time information is of paramount importance. Therefore, the J-PET scanner demands a preparation of novel methods on each step of the data processing. The goal of the work presented in this talk is a development of the signal and image processing algorithms taking into account uniqueness of the J-PET detector. The proposed methods include: signal recovery based on samples of a waveform registered on photomultiplier output,reconstruction of position of interaction of annihilation photon in the scintillator strip,classification of PET events types and image reconstruction that operates exclusively in the image space.

Serdecznie zapraszamy

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

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 1 kwietnia (piątek) o godzinie 10:15, w sali B2.38 odbędzie się

seminarium, na którym zostanie wygłoszony referat pt.:

„Development of nuclear reactors – 4th generation reactors, SMRs and others. Nuclear options for the Polish energy transformation”

Referuje: Prof. Wacław Gudowski

Abstract:

Almost 21 years have passed since Gen IV – Generation IV International Forum (GIF) has been founded in 2001 as a co-operative international endeavour which was set up to carry out the research and development needed to establish the feasibility and performance capabilities of the next, advanced generation of nuclear energy systems.

The program, organizational structure and main achievements and weaknesses of GIF will be presented in the first part of the seminar. Then other modern reactor types not officially belonging to the Gen IV will be presented and briefly assessed. The focus of the presentation will then shift to the description and assessment of the high temperature gas cooled reactor – HTGR/HTR and its nuclear fuel – TRISO.

The various options for solving the problem of USED rather than SPENT nuclear fuel will be briefly described and assessed, including ADS technology, i.e. accelerator-driven subcritical systems.

Finally, possible options for nuclear energy for heat and electricity generation in the Polish energysystem transformation program will be presented. Is there any BEST OPTION?
A Q & A session will follow the seminar.

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

seminarium, na którym zostanie wygłoszony referat pt.:

„From anti-neutrinos to anti-electrons: PET research at the University of Texas at Austin”

Referuje: Prof. Karol Lang (University of Texas at Austin)

Abstract:

Research in fundamental experimental particle physics requires new experiments and novel detectors. Knowledge and experience gained in these endeavors can generate spinoffs that benefit fields outside of particle physics. In this talk, we will describe our work on building a time-of-flight positron-emission-tomography (PET) scanner for proton therapy at MD Anderson in Houston and some other related ideas towards improving and expanding the use of PET detectors.

Karol Lang mini-bio:
Karol Lang is an experimental particle physicist and Jane and Roland Blumberg Professor of Physics at the University of Texas at Austin. He graduated with MSc from Warsaw University. He received his Ph.D. from the University of Rochester participating in an experiment that searched for neutrino oscillations. As a postdoc, Lang worked at SLAC (Stanford) measuring the spin content of the nucleon and on an electron beam dump search for low-mass axions. He then worked at Stanford on a search for KL–>mu-e decays at BNL and a search for the H dibaryon. Lang joined the faculty at the University of Texas at Austin shortly before the Superconducting Super Collider (SSC) was cancelled in 1993. He is now involved in long baseline neutrino oscillations experiments and searches for neutrinoless double beta decay.

Serdecznie zapraszamy

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