7. miniworkshop difrakce a ultraperiferních srážek

Sep 18, 2024, 12:00 PM → Sep 20, 2024, 3:00 PM Europe/Prague

ČVUT Děčín

Workshop will address topics in phenomenology and data analysis techniques used in diffractive processes as well as ultra-periferal collisions. It will have colloquial character with emphasis on discussing various tools and approaches used in the field. Majority talks will be covered by students.

Wednesday, September 18

4:30 PM → 6:20 PM Beyond ALICE

Convener: Matěj Vaculčiak

4:30 PM Welcome

Speaker: Matěj Vaculčiak

4:45 PM Group introduction

Speaker: Jesus Guillermo Contreras

5:00 PM Preparing a Marie Curie grant

In the life of every scientist there is a moment when ey realizes: "If I really want to continue to do science, I need to get my own financing". This talk is about my struggle in writing my very first major grant proposal. I will tell you how I arrived at this idea, how I decided on the topic, what the full paperwork looks like and what one should not forget. Disclaimer: At this very moment, I'm only a submitter of the grant proposal, not a receiver yet. Maybe, one year from now, this talk may turn into a manual on how not to do it.

Speaker: Roman Lavička (CTU FNSPE)

5:20 PM Early-Career Researchers Panel

In this talk, I will introduce the Early-Career Researchers (ECR) Panel of the European Committee for Future Accelerators (ECFA), highlighting its mission to support young researchers in the field of particle physics. As one of the representatives for the Czech Republic, I will discuss the panel's activities, including networking opportunities, career development initiatives, and how the panel advocates for the interests of early-career scientists in Europe.

Speaker: Diana Mária Krupová

7:00 PM → 9:00 PM Dinner

Thursday, September 19

8:30 AM → 9:30 AM Breakfast

9:30 AM → 12:30 PM Phenomenology

Conveners: Solangel Rojas Torres, Vojtěch Zabloudil

9:30 AM Study of non-linear evolution of the hadron structure within QCD

While quantum chromodynamics (QCD) allows the calculation of processes governed by the strong interraction, trying to describe more complex objects like nucleons requires us to simplify the theory with a model. One such simplification is the dipole model accompanied by the Balitsky-Kovchegov (BK) equation. By numerically solving the BK equation, we can calculate the scattering amplitude and learn more about the gluonic structure of protons and neutrons.

Speaker: Štěpán Mayer

9:50 AM Incoherent J/𝝍 production at large |𝒕| identifies the onset of saturation at the LHC

Speaker: Alexandra Ridziková

10:10 AM The Balitsky-Kovchegov equation and dipole orientation

A solution of the target-rapidity Balitsky-Kovchegov (BK) equation is presented considering, for the first time, the complete impact-parameter dependence, i.e. including the orientation of the dipole with respect to the impact-parameter vector. To address the non-local behaviour introduced in the target-rapidity formulation of the BK equation, three different prescriptions are considered to take into account the rapidities preceding the initial condition value. The solutions are used to compute the structure functions of the proton and the diffractive photo- and electro-production of J/$\psi$. These predictions agree well with HERA data, confirming that the target-rapidity Balitsky-Kovchegov equation with the full impact-parameter dependence is a viable tool to study the small Bjorken-$x$ limit of perturbative QCD at current facilities like RHIC and LHC as well as in future colliders like the EIC, for which we present predictions for DIS and diffractive vector meson production.

Speaker: Matěj Vaculčiak

10:30 AM LC wave function for nS vector meson states

Speaker: Jan Čepila (CTU FNSPE)

10:50 AM Coffe break

11:10 AM NLO BK

The Balitsky-Kovchegov evolution equation tells us much about the gluonic structure of hadronic targets in accelerator experiments. As its leading order form has been around for decades with great successes in high-energy phenomenology, the next-to-leading order version (yielding a more accurate description of the scattering process) proves to be a tough nut to crack. In this talk, we will crack it.

Speaker: Marek Matas (České vysoké učení technické v Praze)

11:30 AM Dark matter

Dark matter is an astrophysical phenomenon of our time. Apart from observations of its effects on objects in the Universe, it has still not been detected directly on Earth. Its detection is a matter of current research, with limits to the possibility of simultaneous detection assumed based on its velocity distribution. This thesis discusses methods for accelerating dark matter. In particular, it explores the potential of acceleration by the gravitational manoeuvre, which, unlike other acceleration methods, is independent of interaction with ordinary matter, since it uses the only known dark matter interaction to accelerate it, namely gravitational.

Speaker: Adam Červenka

11:50 AM Dark photons from light and white colour

Speaker: Jesus Guillermo Contreras

12:10 PM Numerical integration

Solving problems in contemporary physics often comes hand in hand with the need for accurate numerical integration. With every additional dimension that needs to be integrated over, this problem becomes increasingly more difficult and at some point unsolvable. One possible way to tackle this issue comes with Monte Carlo Importance Sampling integration. I will introduce this method along with snippets of code to facilitate immediate use for the problems you might be facing today.

Speaker: Marek Matas (České vysoké učení technické v Praze)

12:30 PM → 2:30 PM Lunch

Reservation at 12:15.

2:30 PM → 6:00 PM Detectors

Conveners: Alexandra Ridziková, Diana Mária Krupová

2:30 PM Status of the MFT

Speaker: Sára Haidlová

2:50 PM The MuonID project

Speaker: Solangel Rojas Torres

3:10 PM Development of scintillator nanocomposites for UNICORN

An overview of the European project UNICORN which aims to develop novel scintillators based on composites with quantum dots. This talk focuses on the decoupling of light absorption and Rayleigh scattering within the composite via numerical simulations in Geant4 complemented by experimental characterisations of developed samples.

Speaker: Vojtěch Zabloudil

3:30 PM Photon detection system for ProtoDUNE at CERN

The ProtoDUNE experiment at CERN is crucial in advancing our understanding of neutrino physics and particle detection technologies. This talk will explore the innovative processes used in ProtoDUNE, with a focus on transforming waveform data into charge histograms. By converting complex waveform signals into meaningful charge distributions, we gain critical insights into particle interactions within the detector.

Speaker: Michaela Zabloudil

3:50 PM Coffee break

4:10 PM Construction of a Forward Diffractive Detector prototype with new light readout

Speaker: Matej Tonka

4:30 PM Hands on

Speakers: Solangel Rojas Torres, Timea Szollosova

5:30 PM Cloud chamber in the clouds

Combining physics, authentics travel experience and helping others in one beautiful trip. How to create a cloud chamber without dry ice? What not to bring on an indian airplane? Learn this and more before enjoying the conference dinner!

Speaker: Matěj Vaculčiak

7:00 PM → 9:00 PM Dinner

Friday, September 20

8:30 AM → 9:30 AM Breakfast

9:30 AM → 12:30 PM Analysis

Conveners: Marek Matas (České vysoké učení technické v Praze), Roman Lavička (CTU FNSPE)

9:30 AM Collective effects of heavy flavor hadrons in ultrarelativistic collisions at the LHC

In the Large Hadron Collider (LHC), the energy of the system and the amount of particles created are high enough to free the bound quarks with gluons, which are carriers of colour charge. This process gives rise to formation of extremely hot and dense matter called quark-gluon plasma (QGP). Particles traversing through the QGP carry information about it. One of that information is the collective behaviour of detected particles. The initial geometry of the collisions can affect the evolution of the created medium and the initial fluctuations can cause the spatial anisotropy of the matter expansion. Correlations in these spatial anisotropies are in summary called flow.

Speaker: Stella Marie Králová

9:50 AM Flow of heavy-flavor hadrons in small collisions systems using Run 3 data at the LHC

Speaker: Alexian Marc Lejeune (Czech Technical University)

10:10 AM tba

Speaker: Michal Broz (České vysoké učení technické v Praze)

10:30 AM Central J/ψ in 2023 UPCs

Speaker: Sára Haidlová

10:50 AM Coffee break

11:10 AM Forward J/ψ in UPCs 2023

This presentation will cover the analysis of forward J/psi photoproduction in ultra-peripheral collisions (UPCs) using Pb-Pb data from ALICE 2023 heavy-ion run. The talk will outline the process of calculating the cross section for the coherent J/psi, and the calculation of each of its components, performed using the O2Physics framework and Hyperloop. Several open items that could further improve the analysis, such as vertexing or the use of the MFT, will also be discussed.

Speaker: Diana Mária Krupová

11:30 AM Central ρ in 2023 UPCs

This talk will present preliminary results of an ongoing analysis of central $\rho^0$ photoproduction in Pb--Pb UPCs from the 2023 $\sqrt{s_\mathrm{NN}}=5.36$~TeV LHC heavy-ion run. The presentation will introduce the utilised event selections, methods for event tagging into neutron classes based on information from the ZDC detectors, combinatorial background subtraction, and lastly the first results of fits of the invariant mass distributions with an $\omega$-inclusive Söding model. The $\rho^0$ yields obtained from fits can be used as a convenient starting point for a wide variety of potential further studies.

Speaker: Jakub Juračka (FNSPE CTU)

11:50 AM Energy dependence of incoherent J/ψ photoproduction

Speaker: Vendulka Fílová

12:10 PM Goodbye

Speaker: Matěj Vaculčiak

12:30 PM → 2:30 PM Lunch

Reservation at 12:15.