Faculty of Physics University of Warsaw > Events > Seminars > High Energy Physics Seminar

High Energy Physics Seminar

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room B2.38, Pasteura 5 at 10:15

Dr Jarosław Nowak (Lancaster University)

Physics and Technology of the Deep Underground Neutrino Experiment

The Deep Underground Neutrino Experiment (DUNE) is a multinational effort hosted by Fermilab to address some of the biggest open questions in particle physics, particularly whether charge-parity symmetry is violated in neutrino oscillation. DUNE will make precise measurements of the parameters governing long-baseline neutrino oscillation by observing an intense neutrino beam with a near detector complex onsite at Fermilab and a massive, underground, far detector located ~1300 km away at the Sanford Underground Research Facility in Lead, South Dakota. DUNE will also be sensitive to supernova burst neutrinos and signatures of physics beyond the Standard Model, including baryon number non-conservation. In this seminar, I will describe the simulation-based analysis of DUNE's sensitivity to long-baseline neutrino oscillation, supernovae and BSM phenomena. I will introduce DUNE technology, including the new neutrino beamline, far detector modules design and the near detector complex. https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09 (Meeting ID: 845 1609 6743; Passcode: HEP_UW)

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prof. dr hab. Krzysztof Pachucki (IFT UW)

Precise atomic spectroscopy in search for unknown interactions

I will present very recent results from high precision spectroscopy of the hydrogen versus the muonic hydrogen, the helium versus the muonic helium, with the aim to find discrepancies with predictions of the Quantum Electrodynamic theory, and to discover unknown yet interactions at the atomic scale. https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09 (Meeting ID: 845 1609 6743; Passcode: HEP_UW)

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dr hab. Michał Szleper (IFD UW)

Vector Boson Scattering as a gate to New Physics

In the lack of direct observation of new particles at the LHC, indirect searches for physics beyond the Standard Model gain new importance. Vector Boson Scattering (VBS) processes provide crucial tests of the Standard Model mechanism of electroweak symmetry breaking and allow for indirect searches for New Physics. After a pedagogical introduction to the physics of VBS, I will present the concept of BSM searches in the quasi-model-independent framework of effective field theories, their current status and future plans. I will give a review of recent VBS-related results from the LHC Run 2 data collected by the CMS experiment and selected advances in theory and phenomenology. Join Zoom Meeting https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09 (Meeting ID: 845 1609 6743; Passcode: HEP_UW)

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dr MAŁGORZATA KAZANA (NCBJ)

Poszukiwania cząstek długożyciowych przez CMS

Searches for long-lived particles at CMS

Teorie rozszerzające Model Standardowy przewidują istnienie nowych cząstek, których czas życia jest wolnym parametrem.Hipotetyczne cząstki o długim czasie życia będą manifestowały się w detektorze w niekonwencjonalny sposób w porównaniu do cząstek rozpadających się w punkcie oddziaływania, a ich poszukiwania wymagają zastosowania niestandardowych technik wyzwalania i identyfikacji.Eksperyment CMS przy zderzaczu LHC kładzie coraz większy nacisk na rozszerzenie swoich możliwości poszukiwania takich sygnałów. Podczas seminarium zostaną zaprezentowane najnowsze wyniki uzyskane przez CMS w badaniach nad cząstkami długożyciowymi. https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09 (Meeting ID: 845 1609 6743; Passcode: HEP_UW)

Models beyond the SM predict new particles with a wide range of lifetimes. The weak-scale particles can get a long lifetime which lead to unconventional signatures in the detector with respect to these from prompt decays, often requiring customized techniques to trigger and identify them.The CMS experiment at the LHC collider puts a growing effort to expand the reach for long-lived signals. During the seminar, recent studies on long-lived particles will be shown. https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09 (Meeting ID: 845 1609 6743; Passcode: HEP_UW)

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Krzysztof Mękała, Jan Klamka (IFD UW)

Warsaw contributions to the 2021 International Workshop on Future Linear Colliders, LCWS2021 (part 2)

Krzysztof Mekala: "Heavy Neutrinos at Future Linear e+e- Colliders"With the Standard Model being unable to describe the observed baryon asymmetry or dark matter density in the universe, many models of the New Physics introduce heavy neutrino species as a possible explanation for these effects. Dirac or Majorana neutrinos with masses above the EW scale could be produced at future linear e+e- colliders, like the Compact LInear Collider (CLIC) or the International Linear Collider (ILC). We studied the possibility of observing production and decays of heavy neutrinos in qql final state at the ILC running at 500 GeV and 1 TeV, and the CLIC running at 3 TeV. The analysis is based on the WHIZARD event generation and fast simulation of the detector response with DELPHES. Dirac and Majorana neutrinos with masses from 200 GeV to 3.2 TeV are considered. Estimated limits on the production cross sections and on the neutrino-lepton coupling are compared with the current limits coming from the LHC running at 13 TeV, as well as the expected future limits from hadron colliders. Jan Klamka: "Search for the pair-production of charged IDM scalars at high energy CLIC"Compact Linear Collider is the next energy frontier e+e- collider proposed at CERN. Its goal is to precisely test Standard Model (SM) predictions, as well as directly search for the "new physics". One of the models predicting such phenomena is the Inert Doublet Model (IDM), a very simple extension of the SM scalar sector. It brings in four new particles, including one good dark matter candidate. CLIC sensitivity for discovery of the IDM scalars has been tested, considering 23 benchmark points in the model parameter space. Both fast and full detector simulation techniques were used, where Delphes model of the CLIC detector was extended to include background from gamma-gamma interactions, essential in this analysis. Study shows that IDM particles can be discovered at CLIC for most of considered benchmark points, with high statistical significance. Join Zoom Meeting https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09 (Meeting ID: 845 1609 6743; Passcode: HEP_UW)

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dr. Wojciech Krzemień (NCBJ)

Test of Lepton Flavour Universality at LHCb

The Standard Model of particle physics assumes that the interactions of the three charged leptons differ only because of their mass differences. Any deviation from this Lepton Universality Principle would suggest new kind of interactions or particles beyond the Standard Model.Precision tests of lepton universality have been performed over the years by many experiments.The recent studies of the LHCb experiment indicate evidence for the breaking of lepton universality in beauty-quark decays, with a statistical significance of 3.1 standard deviations.In the talk the last results from the LHCb will be discussed in the context of previous and future measurements. Spotkanie odbędzie się za pośrednictwem platformy zoom: Join Zoom Meeting https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09 (Meeting ID: 845 1609 6743; Passcode: HEP_UW)

The Standard Model of particle physics assumes that the interactions of the three charged leptons differ only because of their mass differences. Any deviation from this Lepton Universality Principle would suggest new kind of interactions or particles beyond the Standard Model.Precision tests of lepton universality have been performed over the years by many experiments.The recent studies of the LHCb experiment indicate evidence for the breaking of lepton universality in beauty-quark decays, with a statistical significance of 3.1 standard deviations.In the talk the last results from the LHCb will be discussed in the context of previous and future measurements. Join Zoom Meeting https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09 (Meeting ID: 845 1609 6743; Passcode: HEP_UW)

room B2.38, Pasteura 5 at 10:15

Krzysztof Mękała, Kacper Nowak (IFD UW)

Warsaw contributions to the 2021 International Workshop on Future Linear Colliders, LCWS2021 (part 1)

Krzysztof Mekala: "CLIC sensitivity to invisible scalar decays" The Compact LInear Collider (CLIC) is a proposed TeV-scale high-luminosity electron-positron collider at CERN. CLIC will allow us to study the Higgs boson properties with very high precision. These measurements can also result in direct or indirect discovery of "new physics", Beyond the Standard Model (BSM) phenomena, which could help us to understand the nature of dark matter (DM). SM-like Higgs boson or new heavy scalar decays with emission of invisible DM particles can be the only way to observe "new physics" effects at achievable energy scales and establish connection between Standard Model and BSM sectors.We studied the possibility of measuring invisible Higgs boson and additional heavy scalars decays with experiment at CLIC running at 380 GeV and 1.5 TeV. We estimated the expected limits on the invisible decays of the125 GeV Higgs boson, as well as the cross section limits for production of an additional neutral Higgs scalar, assuming its invisible decays, as a function of its mass. Kacper Nowak: "Optimising top-quark threshold scan at e+e- colliders using genetic algorithm". One of the important goals at the future e+e- colliders is to measure the top-quark mass and width in a scan of the pair production threshold.However, the shape of the pair-production cross section at the threshold depends also on other model parameters, as the top Yukawa coupling, and the measurement is a subject to many systematic uncertainties.Presented is the most general approach to the top-quark mass determination from the threshold scan at CLIC, with all relevant model parameters and selected systematic uncertainties and constraints from other measurements included in the fit procedure. The top-quark mass can be extracted with precision of the order of 30 to 40 MeV already for 100 fb-1 of data collected at the threshold. Additional improvement is possible if the running scenario is optimized: with the optimisation procedure based on the genetic algorithm the uncertainty can be reduced by about 25%. https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09 (Meeting ID: 845 1609 6743; Passcode: HEP_UW)

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Dr Alexey Lokhov (University of Muenster)

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

The KArlsruhe 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. Spotkanie odbędzie się za pośrednictwem platformy zoom: Join Zoom Meeting https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09 (Meeting ID: 845 1609 6743; Passcode: HEP_UW)

The KArlsruhe 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. Join Zoom Meeting https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09 (Meeting ID: 845 1609 6743; Passcode: HEP_UW)

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

Status of the ILC project and news from LCWS'2021

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. Spotkanie odbędzie się za pośrednictwem platformy zoom: Join Zoom Meeting https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09 (Meeting ID: 845 1609 6743; Passcode: HEP_UW)

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Marek Walczak (IFD UW)

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

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.Spotkanie odbędzie się za pośrednictwem platformy zoom: Join Zoom Meeting https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09 (Meeting ID: 845 1609 6743; Passcode: HEP_UW)

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dr hab. Marcin Chrząszcz (IFJ PAN)

Future Circular Collider - The future of opportunities

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. Spotkanie odbędzie się za pośrednictwem platformy zoom: Join Zoom Meeting https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09 (Meeting ID: 845 1609 6743; Passcode: HEP_UW)

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Prof. UAM dr hab. Krzysztof Cichy (UAM)
Towards spin physics from Lattice QCD
In this talk, we will present recent directions in lattice QCD computations of nucleon structure, in particular for spin-dependent observables. We will provide a brief non-technical introduction to lattice QCD in general and to lattice methods that give access to the relevant physical quantities. Then, we will review selected results for spin-dependent parton distribution functions (PDFs) and generalized parton distributions (GPDs), including both their moments and their x-dependence. Finally, we will show the nucleon spin decomposition from the lattice in terms of contributions from valence/sea quarks and gluons. Spotkanie odbędzie się za pośrednictwem platformy zoom: Join Zoom Meeting https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09 (Meeting ID: 845 1609 6743; Passcode: HEP_UW)
In this talk, we will present recent directions in lattice QCD computations of nucleon structure, in particular for spin-dependent observables. We will provide a brief non-technical introduction to lattice QCD in general and to lattice methods that give access to the relevant physical quantities. Then, we will review selected results for spin-dependent parton distribution functions (PDFs) and generalized parton distributions (GPDs), including both their moments and their x-dependence. Finally, we will show the nucleon spin decomposition from the lattice in terms of contributions from valence/sea quarks and gluons. Spotkanie odbędzie się za pośrednictwem platformy zoom: Join Zoom Meeting https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09 (Meeting ID: 845 1609 6743; Passcode: HEP_UW)
2021-01-22 (Friday)
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dr hab. Lech Wiktor Piotrowski (IFD UW)
Towards identifying the sources of Ultra-High Energy Cosmic Rays
Even though the first UHECR was detected almost 60 years ago, the origin of these particles remains a mystery. For lower energies, their paths are twisted by the Galactic magnetic field, while for higher energies their fluxes are too low to give a statistically significant location on the sky. This is even though the largest observatories occupy hundreds to thousands of square kilometres.In this seminar, I will show two approaches to solving this problem. The first one is significantly increasing the volume of the atmosphere observed. This can be achieved either with covering tens of thousands of square kilometres with simple radio antennas, which is the aim of the Giant Radio Array for Neutrino Detection (GRAND) experiment. Alternatively, UHECR induced fluorescent tracks in the atmosphere can be observed from the orbit, which is the idea behind JEM-EUSO and Poemma experiments. The second approach is to detect ultra-high energy neutrinos, unaffected by Galactic magnetic fields, created by the UHECRs close to their origin. This is, again, the aim of both GRAND and Poemma experiments. Spotkanie odbędzie się za pośrednictwem platformy zoom: Join Zoom Meeting https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09 (Meeting ID: 845 1609 6743; Passcode: HEP_UW)
Even though the first UHECR was detected almost 60 years ago, the origin of these particles remains a mystery. For lower energies, their paths are twisted by the Galactic magnetic field, while for higher energies their fluxes are too low to give a statistically significant location on the sky. This is even though the largest observatories occupy hundreds to thousands of square kilometres.In this seminar, I will show two approaches to solving this problem. The first one is significantly increasing the volume of the atmosphere observed. This can be achieved either with covering tens of thousands of square kilometres with simple radio antennas, which is the aim of the Giant Radio Array for Neutrino Detection (GRAND) experiment. Alternatively, UHECR induced fluorescent tracks in the atmosphere can be observed from the orbit, which is the idea behind JEM-EUSO and Poemma experiments. The second approach is to detect ultra-high energy neutrinos, unaffected by Galactic magnetic fields, created by the UHECRs close to their origin. This is, again, the aim of both GRAND and Poemma experiments. Spotkanie odbędzie się za pośrednictwem platformy zoom: Join Zoom Meeting https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09 (Meeting ID: 845 1609 6743; Passcode: HEP_UW)
2020-12-18 (Friday)
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prof. dr hab. Barbara Badełek (IFD UW)
Proton's interior: a landscape with EIC in foreground
The talk is a pedagogical introduction to main aspects of the contemporary view of the proton structure, viewed from a perspective of the Electron-Ion Collider, a frontier accelerator facility, planned in the US. Join Zoom Meeting https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09 (Meeting ID: 845 1609 6743; Passcode: HEP_UW)

2020-12-11 (Friday)
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dr hab. Paweł Malecki (IFJ PAN)
The Baikal-GVD neutrino telescope
High-energy neutrino astronomy is a fascinating new field of research, rapidly developing1over the recent years. It opens a new observation window on the most violent processes in the universe, fitting very well to the concept of multi-messenger astronomy. Constraining astrophysical neutrino fluxes can also help to understand the long-standing mystery of the origin of the ultra-high energy cosmic rays. Astronomical studies of high-energy neutrinos are carried out by large-scale next-generation neutrino telescopes located in different regions of the world, forming a global network of complementary detectors. The Baikal-GVD, being currently the largest neutrino telescope in the Northern Hemisphere and still growing up, is an important constituent of this network.This talk briefly reviews working principles, analysis methods and some selected results of the Baikal-GVD neutrino telescope. Join Zoom Meeting https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09 (Meeting ID: 845 1609 6743, Passcode: HEP_UW)

2020-12-04 (Friday)
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Piotr Kalaczyński (NCBJ)
KM3NeT/ORCA: status & perspectives for \nu oscillation and mass ordering measurements
KM3NeT/ORCA: status & perspectives for \nu oscillation and mass ordering measurements

A next-generation neutrino telescope, the Kilometer Cube Neutrino Telescope (KM3NeT), is currently under deployment in the Mediterranean Sea. Its low energy configuration ORCA (Oscillations Research with Cosmics in the Abyss) is optimised for the detection of atmospheric neutrinos with energies above ∼1 GeV. The main research target of the ORCA detector is the measurement of the neutrino mass ordering and atmospheric neutrino oscillation parameters, while the detector is also sensitive to a wide variety of other physics topics, such as dark matter, non-standard interactions and sterile neutrinos. The presentation will provide an overview of the ORCA detector and introduce its research programme, alongside early analyses of data collected with the array in its current configuration. https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09 (Meeting ID: 845 1609 6743, Passcode: HEP_UW)

2020-11-27 (Friday)
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dr hab. Michał Bluj (NCBJ)
Selected measurements with H→ττ decays using the CMS detector
Measurements with the H→ττ decay channel play an important role in probing Higgs boson properties. In this talk recent results obtained by the CMS experiment with the H→ττ channel will be discussed: a measurement of the Higgs boson production cross-section and a measurement of the CP structure of the Yukawa coupling between the Higgs boson and tau leptons. https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09 (Meeting ID: 845 1609 6743, Passcode: HEP_UW)
Measurements with the H→ττ decay channel play an important role in probing Higgs boson properties. In this talk recent results obtained by the CMS experiment with the H→ττ channel will be discussed: a measurement of the Higgs boson production cross-section and a measurement of the CP structure of the Yukawa coupling between the Higgs boson and tau leptons. https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09 (Meeting ID: 845 1609 6743, Passcode: HEP_UW)
2020-11-20 (Friday)
room B2.38, Pasteura 5 at 10:15
(IFD UW)
107th Plenary ECFA meeting - ZOOM
W dniu 20 listopada zapraszamy do udziału w otwartej sesji plenarnej ECFA, która poświęcona będzie tzw. fabrykom gamma. Plan spotkania: Session on gamma factories: 10:30 Physics context and opportunities at the HL-LHC Speaker: Mieczyslaw Krasny (Centre National de la Recherche Scientifique (FR)) 11:10 Technical aspects, R&D and Proof-of-Principle Speaker: Yann Dutheil (CERN) 11:35 Physics applications of gamma-factories Speaker: DMITRY BUDKER (Helmholtz Institute Mainz and UC Berkeley) Szczegóły spotkania ECFA, które rozpoczyna się w czwartek, 19 listopada o godz. 14:00 i zakończy w piątek, 20 listopada o godz. 17:00 dostępne są nastronie: https://indico.cern.ch/event/966397/. Spotkanie będzie transmitowane za pośrednictwem platformy zoom. Bezpośredni link do spotkania: https://cern.zoom.us/j/94044206208?pwd=M3Z4OVF0RVZFdWxqalhpNy9xT1hKQT09
We invite you to participate in the open sessions of Plenary ECFA, held on 19-20 November 2020. A dedicated session of Friday morning will be devoted to gamma factories. Session on gamma factories: 10:30 Physics context and opportunities at the HL-LHC Speaker: Mieczyslaw Krasny (Centre National de la Recherche Scientifique (FR)) 11:10 Technical aspects, R&D and Proof-of-Principle Speaker: Yann Dutheil (CERN) 11:35 Physics applications of gamma-factories Speaker: DMITRY BUDKER (Helmholtz Institute Mainz and UC Berkeley) Details of the Plenary ECFA open session can be found on: https://indico.cern.ch/event/966397/ Direct link to the zoom meeting: https://cern.zoom.us/j/94044206208?pwd=M3Z4OVF0RVZFdWxqalhpNy9xT1hKQT09
2020-11-13 (Friday)
room B2.38, Pasteura 5 at 10:15
prof. dr hab. Krzysztof DOROBA (IFD UW)
Search for τ→μμμ Decay
Branching rations Br(τ→μμμ) have been studied in particular by BELLE, BABAR, LHCb, ATLAS and CMS. Obtained results should be compared with existing or future predictions on Charged Lepton Flavor Violation (CLFV) of different Standard Model extensions. In this talk methods used by above experiments for data collection and analysis will be described and experimental results presented with particular emphasis on the CMS experiment. Join Zoom Meeting https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09 Meeting ID: 845 1609 6743, Passcode: HEP_UW
Branching rations Br(τ→μμμ) have been studied in particular by BELLE, BABAR, LHCb, ATLAS and CMS. Obtained results should be compared with existing or future predictions on Charged Lepton Flavor Violation (CLFV) of different Standard Model extensions. In this talk methods used by above experiments for data collection and analysis will be described and experimental results presented with particular emphasis on the CMS experiment. Join Zoom Meeting https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09 Meeting ID: 845 1609 6743, Passcode: HEP_UW
2020-11-06 (Friday)
room B2.38, Pasteura 5 at 10:15
Prof. dr hab. Krzysztof Golec-Biernat (IFJ PAN)
Deep Inelastic Scattering studies with the EIC
The planned Electron Ion Collider offers new opportunities to study quark-gluon strukture of nuclons and nuclei through deep inelastic scattering processes. I will present some of them refering to the currente status of our knowledge of this structure. Spotkanie odbędzie się za pośrednictwem platformy zoom: Join Zoom Meeting https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09 Meeting ID: 845 1609 6743, Passcode: HEP_UW
The planned Electron Ion Collider offers new opportunities to study quark-gluon strukture of nuclons and nuclei through deep inelastic scattering processes. I will present some of them refering to the currente status of our knowledge of this structure. Join Zoom Meeting https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09 Meeting ID: 845 1609 6743, Passcode: HEP_UW
2020-10-30 (Friday)
room B2.38, Pasteura 5 at 10:15
dr hab. Marcin Konecki, prof. UW (IFD UW)
Top physics with the CMS experiment - selected results
The top quark is the heaviest object in the standard model (SM).It allows for the precise test of the SM and searches for a new physics.Thus the top quark measurements are important part of CMS physics program.In the presentation the selection of recent CMS top-quark measurements will be given:t-tbar production in association with charm, 3rd generation of CKM matrix elements, forward-backward asymmetry, top Yukawa coupling determination and a search for CP violation effects in top production. Spotkanie odbędzie się za pośrednictwem platformy zoom: Join Zoom Meeting https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09 Meeting ID: 845 1609 6743 Passcode: HEP_UW
The top quark is the heaviest object in the standard model (SM).It allows for the precise test of the SM and searches for a new physics.Thus the top quark measurements are important part of CMS physics program.In the presentation the selection of recent CMS top-quark measurements will be given:t-tbar production in association with charm, 3rd generation of CKM matrix elements, forward-backward asymmetry, top Yukawa coupling determination and a search for CP violation effects in top production. Join Zoom Meeting https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09 Meeting ID: 845 1609 6743 Passcode: HEP_UW
2020-10-23 (Friday)
join us at 10:15
dr hab. Katarzyna Grzelak (IFD UW)
Neutrino 2020 - conference report
The XXIX International Conference on Neutrino Physics and Astrophysics was originally scheduled to take place in Chicago but due to COVID-19 was entirely virtual.This year more than 3400 people participated from 22 June to 2 July in this biggest conference in the neutrino physics field.In the seminar the results shown at the conference will be presented. Spotkanie odbędzie się za pośrednictwem platformy zoom:Join Zoom Meeting https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09 (Meeting ID: 845 1609 6743 , Passcode: HEP_UW)
The XXIX International Conference on Neutrino Physics and Astrophysics was originally scheduled to take place in Chicago but due to COVID-19 was entirely virtual.This year more than 3400 people participated from 22 June to 2 July in this biggest conference in the neutrino physics field.In the seminar the results shown at the conference will be presented. Join Zoom Meeting https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09 (Meeting ID: 845 1609 6743 , Passcode: HEP_UW)
2020-10-16 (Friday)
join us at 10:15
prof. dr hab. Jan Królikowski (IFD UW)
2020 update of the European Strategy for Particle Physics
Spotkanie odbędzie się za pośrednictwem platformy zoom:https://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09Meeting ID: 845 1609 6743Passcode: HEP_UW
Join Zoom Meetinghttps://us02web.zoom.us/j/84516096743?pwd=a3BYQ24zY1ZjQTF4eFIwUnM2WlNaZz09Meeting ID: 845 1609 6743Passcode: HEP_UW
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