- Seminars-iihe - listserv.vub.be

IIHE Seminar May 3: Dr. Cecile Caillol (Observation of the photon-induced production of tau leptons in pp collisions at CMS and constraints on tau g-2)
by Steven Lowette 03 May '24

03 May '24

Dear all, On Friday May 3 we will have an IIHE seminar from Dr. Cecile Caillol: "Observation of the photon-induced production of tau leptons in pp collisions at CMS and constraints on tau g-2" at 14h30 in the Sacton seminar room (G.1.03) Abstract and short bio are below; the event's agenda can be found here: https://indico.iihe.ac.be/event/1922/ Kind regards, Steven. ----- Abstract: The photon-induced production of a pair of tau leptons had been observed in proton-proton collisions with data collected in Run-2 by the CMS detector at the CERN LHC. Signal events are identified thanks to their low track multiplicity around the di-tau vertex. These events are used to set constraints on the anomalous magnetic moment of the tau lepton, significantly improving previous measurements from the LEP era Bio: Dr. Cecile Caillol did her PhD at the Universite Libre de Bruxelles (Belgium) and graduated in 2016. She then joined the University of Wisconsin-Madison until July 2021, when she became an LD staff researcher at CERN. During her PhD and after, she worked on Higgs boson decays to tau leptons, including the first observation of H->tautau decays with 2016 data, and other Higgs boson measurements with tau leptons. She also played a leading role in several exotic Higgs searches. More recently, she has worked on the study of photon-induced processes (this seminar), and the lepton-induced production of leptoquarks. She is currently convener of one of the 3 search groups of CMS (SUS ˜= supersymmetry, dark matter, exotic Higgs). -- Steven Lowette https://cern.ch/lowette/

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IIHE Seminar Apr 12: dr. Elise Wursten (Experiments at the antimatter factory of CERN)
by Steven Lowette 12 Apr '24

12 Apr '24

Dear all, On Friday April 12 we will have an IIHE seminar from Dr. Elisa Wursten: "Experiments at the antimatter factory of CERN" at 14h30 in the Sacton seminar room (G.1.03) Abstract and short bio are below; the event's agenda can be found here: https://indico.iihe.ac.be/event/1920/ Kind regards, Steven. ----- Abstract: The Standard Model of Particle Physics is an extremely powerful model, but it is known to be incomplete. One of its issues is that it does not provide an explanation for the striking imbalance of matter over antimatter observed in our Universe. To better understand the properties of antimatter, the Antiproton Decelerator was inaugurated at CERN in 2000, providing a facility for dedicated studies of low-energy antiprotons and antihydrogen. Since then, an impressive amount of progress has been made, ranging from the efficient production, trapping and laser cooling of antihydrogen to extremely precise spectroscopic measurements and studies of its gravitational behaviour. In this seminar, I will give an overview of the experiments at the antimatter factory of CERN, concisely summarizing their research objectives, their measurements concepts and highlighting the most important results and plans for the future. Bio: Dr. Elise Wursten did her PhD at KULeuven, contributing to the neutron Electric Dipole Moment experiment (nEDM) at the Paul Scherrer Institute in Switzerland, under supeervision of Prof. Nathal Severijns. Interleaved with short periods as Visiting Scientist Fellow of the Max Planck Society, she was from 2018-2020 a CERN Senior Research Fellow and Visiting Scientist at the Ulmer Fundamental Symmetries Laboratory of RIKEN, Japan, working at the Baryon Antibaryon Symmetry Experiment (BASE) at the Antiproton Decelerator of CERN, Switzerland. Since 2021, she is a Special Postdoctoral Researcher affiliated to the Ulmer Fundamental Symmetries Laboratory of RIKEN, Japan, working again at the BASE experiment at CERN. -- Steven Lowette https://cern.ch/lowette/

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IIHE Seminar Apr 5: Prof. Domenico Della Volpe (Opening the PeV era in gamma ray astronomy - LHAASO highlight)
by Steven Lowette 05 Apr '24

05 Apr '24

Dear all, On Friday April 5 we will have an IIHE seminar from Prof. Domenico Della Volpe: "Opening the PeV era in gamma ray astronomy - LHAASO highlight" at 14h30 in the Sacton seminar room (G.1.03) Abstract and short bio are below; the event's agenda can be found here: https://indico.iihe.ac.be/event/1921/ Kind regards, Steven. ----- Abstract: LHAASO has started taking data in 2021 with its full array. With its large field of view and good performance, it has collected a huge amount of high quality data. In this of talk we will illustrate the LHAASO instruments and its performances. Later we will go over major achievements and breakthrough results. In the end, we will also give an outlook at the evolution of the array and LHAASO synergies with future instruments. Bio: Professor Della Volpe currently holds a position as a professor at the University of Geneva, where he contributes significantly to the astroparticle pillar of the department. Additionally, he is actively engaged in medical physics through his leadership role in the POSICS project, which aims to develop an innovative portable gamma/beta camera, generously funded by the EU H2020 program. His primary focus lies within the Cherenkov Telescope Array Observatory (CTAO), with a particular emphasis on the Large Size Telescope (LST) collaboration, where he holds the pivotal role of System Lead Engineer. His significant contribution played a crucial role in the success of the Critical Design Review (CDR) of the LST, a milestone achievement that marked it as the first telescope to meet the stringent qualifications for acceptance into the CTAO. His engagement with LHAASO began in 2017 through a collaboration on the WFCTA Camera, where his group supplied the technology for the focal plane. This contribution was notably acknowledged by LHAASO, particularly noteworthy as his group was the sole non-Chinese participant in the experiment and a member of the Institutional Board, underscoring the significance of their involvement. From 2018 to 2023, Professor Della Volpe chaired the publication committee of LHAASO and served as the main editor of the LHAASO science book. He has also made significant contributions as a contributing author to seminal papers published in prestigious journals such as Nature and Science. His main activity is in CTAO, and in particular in the Large Size telescope collaboration, where he is the System Lead engineer. In the end 2023, he left LHAASO to focus on new projects. He is one of the PI of the QUASAR project, aimed at pushing the boundaries of Intensity Interferometry to achieve micro arc-second resolution using picosecond light detectors. Additionally, he is collaborating on the French-Swiss initiative known as LACTEL, which seeks to implement a pioneering concept of a water Cherenkov detector in Lake Geneva, garnering significant interest from the scientific community, including the South West Galactic Observatory (SWGO). -- Steven Lowette https://cern.ch/lowette/

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IIHE Seminar Mar 29: Prof. Charlotte Van Hulse (Study of hadron structure in ultra-peripheral collisions at the LHC)
by Steven Lowette 29 Mar '24

29 Mar '24

Dear all, On Friday Mar 29 we will have an IIHE seminar from Prof. Charlotte Van Hulse: "Study of hadron structure in ultra-peripheral collisions at the LHC" at 14h30 in the Sacton seminar room (G.1.03) Abstract and short bio are below; the event's agenda can be found here: https://indico.iihe.ac.be/event/1919/ (note that via the top-left you can link the seminar agendas into your agenda, so you never miss one!) Kind regards, Steven. ----- Abstract: The study of exclusive processes in lepton-hadron interactions and in ultra-peripheral hadron-hadron collisions provides information on the three-dimensional distribution of quarks and gluons as a function of their longitudinal momentum and transverse position inside the hadron. Here, the longitudinal direction corresponds to the direction of the probe used to investigate the hadron. An introduction will be given as to how exclusive processes in ultra-peripheral hadron-hadron collisions provide access to the internal structure of the nucleon, and relevant experimental results will be discussed. Where applicable, parallels with measurements in lepton-hadron interactions will be highlighted. Bio: Charlotte Van Hulse is a professor at the University of Alcala in Spain. She did her PhD at Ghent University, where she studied exclusive and semi-inclusive QCD processes in lepton-hadron collisions at the HERMES experiment, at DESY, Hamburg. Subsequently she studied hadron formation in e+e- collisions, at the Belle experiment in Japan, and performed studies for a fixed target at ALICE. Nowadays she focuses on QCD (exclusive and semi-inclusive processes) at the LHCb experiment as well as feasibility/R&D studies for the future electron-ion collider at BNL, USA. -- Steven Lowette https://cern.ch/lowette/

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Re: IIHE Seminar Mar 22: Dr. James Howarth (Exploring quantum entanglement at hadron colliders using top quarks at the ATLAS experiment)
by Steven Lowette 22 Mar '24

22 Mar '24

Hello everyone! Last reminder for the seminar, see you at 2.30! Cheers, Steven. On Mar 19, 2024 10:07, Steven Lowette <Steven.Lowette(a)cern.ch> wrote: Hello everyone, This is a reminder that you have the IIHE seminar this Friday on top entanglement in your agenda. See you there numerously, Steven. On 26/02/2024 14:28, Steven Lowette wrote: > Dear all, > > On Friday Mar 22 we will have an IIHE seminar from Dr. James Howarth: > "Exploring quantum entanglement at hadron colliders using top quarks at > the ATLAS experiment" > at 14h30 in the Sacton seminar room (G.1.03) > > Abstract and short bio are below; the event's agenda can be found here: > https://indico.iihe.ac.be/event/1918/ > > Kind regards, > Steven. > > ----- > > Abstract: > ATLAS recently observed quantum entanglement in pairs of top quarks > using 13 TeV data, the first time that entanglement has been observed in > fundamental quarks and at the highest ever energy scales. In this > seminar I will explain how this ground breaking measurement was > achieved, how it highlights limitations in our current state-of-the-art > Monte Carlo simulations, and the implications of the result in the wider > context of quantum information. I will also explain what direction this > exciting new field of study at collider experiments might take and > highlight new opportunities for collaborations between quantum > information and collider physics. > > Bio: > Dr James (Jay) Howarth is a Lecturer at the University of Glasgow and > Royal Society University Research Fellow. He obtained his PhD at the > University of Manchester in 2013, followed by a research fellowship at > DESY and a postdoctoral research position at the University of > Manchester. His research focuses on top quark physics in general, > particularly on the properties of top quarks at hadron colliders and is > a member of the ATLAS collaboration. > > -- Steven Lowette https://cern.ch/lowette/

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IIHE Seminar Mar 22: Dr. James Howarth (Exploring quantum entanglement at hadron colliders using top quarks at the ATLAS experiment)
by Steven Lowette 19 Mar '24

19 Mar '24

Dear all, On Friday Mar 22 we will have an IIHE seminar from Dr. James Howarth: "Exploring quantum entanglement at hadron colliders using top quarks at the ATLAS experiment" at 14h30 in the Sacton seminar room (G.1.03) Abstract and short bio are below; the event's agenda can be found here: https://indico.iihe.ac.be/event/1918/ Kind regards, Steven. ----- Abstract: ATLAS recently observed quantum entanglement in pairs of top quarks using 13 TeV data, the first time that entanglement has been observed in fundamental quarks and at the highest ever energy scales. In this seminar I will explain how this ground breaking measurement was achieved, how it highlights limitations in our current state-of-the-art Monte Carlo simulations, and the implications of the result in the wider context of quantum information. I will also explain what direction this exciting new field of study at collider experiments might take and highlight new opportunities for collaborations between quantum information and collider physics. Bio: Dr James (Jay) Howarth is a Lecturer at the University of Glasgow and Royal Society University Research Fellow. He obtained his PhD at the University of Manchester in 2013, followed by a research fellowship at DESY and a postdoctoral research position at the University of Manchester. His research focuses on top quark physics in general, particularly on the properties of top quarks at hadron colliders and is a member of the ATLAS collaboration. -- Steven Lowette https://cern.ch/lowette/

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IIHE Seminar Mar 7: Dr. Richard Ruiz (Vector Boson Scattering: Status and Prospects for the Large Hadron Collider and Beyond)
by Steven Lowette 07 Mar '24

07 Mar '24

Dear all, On Thursday Mar 7 we will have an IIHE seminar from Dr. Richard Ruiz: "Vector Boson Scattering: Status and Prospects for the Large Hadron Collider and Beyond" at 15h00 in the Sacton seminar room (G.1.03) Note the *unusual day and time* to accommodate the speaker's travel constraints. Abstract and short bio are below; the event's agenda can be found here: https://indico.iihe.ac.be/event/1917/ Kind regards, Steven. ----- Abstract: The scattering of electroweak bosons at TeV-scale super colliders is a powerful mechanism that probes spin and charge configurations inaccessible to quark and gluon scattering. Electroweak vector boson scattering (VBS) processes therefore give unique insights into the Standard Model's gauge and Higgs sectors, as well as into models of new physics. In this talk, we review experimental results and ongoing theoretical developments of VBS at the Large Hadron Collider, its high luminosity upgrade, and its potential successors. Short Bio: Richard Ruiz is a specialist in collider physics, and particularly searches for violations of lepton symmetries using electroweak boson scattering as a probe of new physics at the Large Hadron Collider. After earning his PhD at the University of Pittsburgh in 2015 on the topic "hadron collider tests of neutrino mass models", Richard moved to Durham University's Institute for Particle Physics Phenomenology in the UK. In 2018, he moved to the Universite Catholique de Louvain's Center for Cosmology and Particle Physics Phenomenology and finally joined the Institute for Nuclear Physics Polish Academy of Science (IFJ PAN) in Krakow, in 2020. He is credited in his habilitation with "influential theoretical contributions to understanding and using vector boson scattering as a probe of new physics at the LHC, its high-luminosity upgrade, and future high-energy collider experiments," which is the topic of the talk. Despite being a theorist investigating fundamental aspects of collider theory, Richard is heavily involved in experimental activities at CERN due to his work on developing user-friendly simulation tools. -- Steven Lowette https://cern.ch/lowette/

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Re: [allusers-iihe] *Reminder* [IIHE Seminar Feb 23: Prof. Giovanni De Lellis (The Scattering and Neutrino Detector at the LHC)]
by Steven Lowette 23 Feb '24

23 Feb '24

Dear all, We are a little delayed, so we will start the seminar at 14h15. Sorry for this sight change of schedule. Steven. On Feb 23, 2024 10:53, Steven Lowette via allusers-iihe <allusers-iihe(a)listserv.vub.be> wrote: *Reminder* IIHE Seminar *today at 2pm* in the Sacton room! See you numerously there, Steven. On 21/02/2024 12:00, Steven Lowette wrote: > Dear all, > > A reminder for this seminar on Friday - looking forward to see you > numerously. > > Note that this presentation will also contain an interesting connection > to the CMS tracker. > > Kind regards, > Steven. > > > On 12/02/2024 07:56, Steven Lowette wrote: >> Dear all, >> >> On Feb 23 we will have an IIHE seminar from Prof. Giovanni de Lellis: >> "The new era of collider neutrinos: the Scattering and Neutrino >> Detector at the LHC" >> at 14h00 in the Sacton seminar room (G.1.03) >> (note the unusual time to accommodate travel constraints) >> >> Abstract and short bio are below; the event's agenda can be found here: >> https://indico.iihe.ac.be/event/1916/ >> >> Kind regards, >> Steven. >> >> ----- >> >> Abstract: >> SND@LHC is a compact and stand-alone experiment to perform >> measurements with neutrinos produced at the LHC in a hitherto >> unexplored pseudo-rapidity region of 7.2 < 𝜂 < 8.4, complementary to >> all the other experiments at the LHC. The experiment is located 480 m >> downstream of IP1 and the detector is composed of a hybrid system >> based on an 800 kg target mass of tungsten plates, interleaved with >> emulsion and electronic trackers, followed downstream by a calorimeter >> and a muon system. The configuration allows efficiently distinguishing >> between all three neutrino flavours, opening a unique opportunity to >> probe physics of heavy flavour production at the LHC in the region >> that is not accessible to ATLAS, CMS and LHCb. This region is of >> particular interest for future circular colliders and for predictions >> of very high-energy atmospheric neutrinos. The detector concept is >> also well suited to searching for Feebly Interacting Particles via >> signatures of scattering in the detector target. The first phase aims >> at operating the detector throughout LHC Run 3. The experiment has >> taken data since 2022 and has recently reported the first observation >> of collider neutrinos. We shall review the first experimental results >> and the plans for the upgrade to operate at the high-luminosity LHC. A >> new era of collider neutrino physics has just started. >> >> Short Bio: >> Giovanni De Lellis was born in Naples, Italy, in 1973. He graduated in >> Physics summa cum laude in 1996 and in piano in 1997. He got his Ph.D. >> in Physics in 2000 with a thesis on the “First observation of the >> associated charm production in neutrino interactions”, where he >> firstly observed this process in the data collected by the CHORUS >> experiment at CERN. He is Full Professor of Experimental Physics at >> the University of Naples. >> After studying the charm production in neutrino interactions in >> CHORUS, he moved to the OPERA experiment, designed to observe muon to >> tau neutrino oscillations, for the first time in appearance mode with >> a neutrino beam at CERN and the detector located in Gran Sasso >> (Italy). In OPERA he acted as coordinator of the emulsion scanning >> laboratories from 2008 till 2012, before being appointed Spokesperson. >> He served this role from 2012 until the end of the experimental >> program in 2019. In 2015 OPERA reported the observation of tau >> neutrino appearance in a muon neutrino beam with a significance above >> 5s, while in 2018 final results were given with more than 6s >> significance and with the estimate of the oscillation parameters with >> an improved accuracy. In 2018 he patented with members of his group in >> Naples a method to achieve nanometric accuracy with optical >> microscopy, getting the unprecedented resolution of 60 nm. In 2018, he >> did some feasibility studies to build a detector and study neutrinos >> for the first time produced by a collider, the LHC. These studies laid >> the foundations of the "Scattering and Neutrino Detector at the LHC” >> experiment, with 180 scientists in 13 Countries and CERN. In 2020 he >> was elected as the first Spokesperson of the experiment. >> > -- Steven Lowette https://cern.ch/lowette/ _______________________________________________ Seminars-iihe mailing list -- seminars-iihe(a)listserv.vub.be To unsubscribe send an email to seminars-iihe-leave(a)listserv.vub.be _______________________________________________ allusers-iihe mailing list -- allusers-iihe(a)listserv.vub.be To unsubscribe send an email to allusers-iihe-leave(a)listserv.vub.be

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IIHE Seminar Feb 23: Prof. Giovanni De Lellis (The Scattering and Neutrino Detector at the LHC)
by Steven Lowette 23 Feb '24

23 Feb '24

Dear all, On Feb 23 we will have an IIHE seminar from Prof. Giovanni de Lellis: "The new era of collider neutrinos: the Scattering and Neutrino Detector at the LHC" at 14h00 in the Sacton seminar room (G.1.03) (note the unusual time to accommodate travel constraints) Abstract and short bio are below; the event's agenda can be found here: https://indico.iihe.ac.be/event/1916/ Kind regards, Steven. ----- Abstract: SND@LHC is a compact and stand-alone experiment to perform measurements with neutrinos produced at the LHC in a hitherto unexplored pseudo-rapidity region of 7.2 < 𝜂 < 8.4, complementary to all the other experiments at the LHC. The experiment is located 480 m downstream of IP1 and the detector is composed of a hybrid system based on an 800 kg target mass of tungsten plates, interleaved with emulsion and electronic trackers, followed downstream by a calorimeter and a muon system. The configuration allows efficiently distinguishing between all three neutrino flavours, opening a unique opportunity to probe physics of heavy flavour production at the LHC in the region that is not accessible to ATLAS, CMS and LHCb. This region is of particular interest for future circular colliders and for predictions of very high-energy atmospheric neutrinos. The detector concept is also well suited to searching for Feebly Interacting Particles via signatures of scattering in the detector target. The first phase aims at operating the detector throughout LHC Run 3. The experiment has taken data since 2022 and has recently reported the first observation of collider neutrinos. We shall review the first experimental results and the plans for the upgrade to operate at the high-luminosity LHC. A new era of collider neutrino physics has just started. Short Bio: Giovanni De Lellis was born in Naples, Italy, in 1973. He graduated in Physics summa cum laude in 1996 and in piano in 1997. He got his Ph.D. in Physics in 2000 with a thesis on the “First observation of the associated charm production in neutrino interactions”, where he firstly observed this process in the data collected by the CHORUS experiment at CERN. He is Full Professor of Experimental Physics at the University of Naples. After studying the charm production in neutrino interactions in CHORUS, he moved to the OPERA experiment, designed to observe muon to tau neutrino oscillations, for the first time in appearance mode with a neutrino beam at CERN and the detector located in Gran Sasso (Italy). In OPERA he acted as coordinator of the emulsion scanning laboratories from 2008 till 2012, before being appointed Spokesperson. He served this role from 2012 until the end of the experimental program in 2019. In 2015 OPERA reported the observation of tau neutrino appearance in a muon neutrino beam with a significance above 5s, while in 2018 final results were given with more than 6s significance and with the estimate of the oscillation parameters with an improved accuracy. In 2018 he patented with members of his group in Naples a method to achieve nanometric accuracy with optical microscopy, getting the unprecedented resolution of 60 nm. In 2018, he did some feasibility studies to build a detector and study neutrinos for the first time produced by a collider, the LHC. These studies laid the foundations of the "Scattering and Neutrino Detector at the LHC” experiment, with 180 scientists in 13 Countries and CERN. In 2020 he was elected as the first Spokesperson of the experiment. -- Steven Lowette https://cern.ch/lowette/

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IIHE seminar Dec 13: Prof. Matthew Citron (Searching for millicharged signatures of the dark sector)
by Steven Lowette 13 Dec '23

13 Dec '23

Dear all, Coupled to the milliQan workshop that will run next week in the lab Mon-Wed, we will have an invited seminar from Prof. Matthew Citron: "Searching for millicharged signatures of the dark sector" on Wed Dec 13 at 14h30 in the Neutrino room (G.0.20). *Note the unusual day and location!* Abstract and short bio are below; the event's agenda can be found here: https://indico.iihe.ac.be/event/1897/ Kind regards, Steven. ----- Abstract: Hidden sector models of dark matter are the focus of a large number of searches at the LHC and beyond. An underexplored signature of such theories is the production of particles with a small fractional electric charge. These "millicharged particles" may be produced copiously at facilities such as the LHC. However, due to their very small energy depositions, general purpose detectors are blind to them. I will show how this blind spot can be closed through the use of dedicated detectors that consist of several layers of long scintillator bars, paired with high-gain, low-noise photomultiplier tubes. In this talk I will cover results from the milliQan demonstrator, which ran very successfully at the LHC, the ongoing Run 3 milliQan experiment, as well as plans for the forward FORMOSA detector for the HL-LHC. Finally, I will discuss complementary experiments at high intensity facilities. Bio: Dr Matthew Citron has been an Assistant Professor in the Physics Department at UC Davis since 2023. He obtained his PhD from Imperial College London where he worked on searches for supersymmetry with the CMS detector at the LHC. He then took a Postdoc appointment at UC Santa Barbara where he worked on searches for long-lived signatures of new physics. At UC Davis his research focusses on searches for exotic signatures of dark sectors using both the general purpose CMS detector as well as constructing and operating dedicated detectors at the LHC and beyond. -- Steven Lowette https://cern.ch/lowette/ -- Prof. Steven Lowette Vrije Universiteit Brussel https://cern.ch/lowette/

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