Seminars-iihe June 2024

seminars-iihe@listserv.vub.be

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IIHE Seminar Jun 18: Dr. Stefan Maier (The future CMS Tracking system and its Outer Tracker module concept)
by Steven Lowette 18 Jun '24

18 Jun '24

Dear all, On Tuesday June 18 we will have an IIHE seminar from Dr. Stefan Maier: "The future CMS Tracking system and its Outer Tracker module concept" at 14h30 in the Sacton seminar room (G.1.03) Note the exceptional date on a Tuesday! Abstract and short bio are below; the event's agenda can be found here: https://indico.iihe.ac.be/event/1926/ See you there/then, Pascal and Steven ----- Abstract: The talk shortly summarizes the needs to upgrade the current tracking system of the CMS detector and gives insights on some of the key features of the future silicon tracker focusing on the novel double-layered module concept supporting the Level 1 trigger of CMS. Short Bio: Stefan Maier graduated in physics at the Karlsruhe Institute of Technology (KIT) in 2016. His bachelor thesis in 2014 was about the p-stop concentration in 2S sensors, and his master thesis was about an alternative CMS outer tracker (OT) upgrade module concept. He then did his PhD at the Institute of Experimental Particle Physics (ETP) at KIT in 2019 on the subject of high-rate tests on CBC ships for the CMS OT upgrade, and module assembly and test procedures. Since then, He is a Postdoc at the ETP working on the preparation for the OT module assembly and quality control. -- Steven Lowette https://cern.ch/lowette/

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IIHE Seminar Jun 7: Prof. Dr. Matthias Schott (Precision Measurement of the Strong Coupling Constant with Z Boson Kinematics)
by Steven Lowette 07 Jun '24

07 Jun '24

Dear all, On Friday Jun 7 we will have an IIHE seminar from Prof. Dr. Matthias Schott: "Precision Measurement of the Strong Coupling Constant with Z Boson Kinematics" 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/1925/ Have a nice weekend! Steven. ----- Abstract: The strong coupling constant, alphaS, is one of the fundamental parameters of the Standard Model (SM) of particle physics and describes the strength of the strong interaction. It determines how strongly quarks and gluons as building blocks of protons and neutrons interact with each other. More concretely, alphaS, is one of the three coupling constants within the SM and therefore plays a fundamental role in our ability to describe the universe. The precision measurement of alphaS, is notorious difficult and most experimental measurements yield relative uncertainties of several percent. In recent years, we developed a fundamentally new approach to measure the strong coupling constant using the kinematic properties of Z bosons produced in proton-proton collisions, yielding a relative uncertainty of 0.8% and being the most precise measurement to date. Our approach of this measurement lies in the study of the Z boson kinematics in proton-proton collisions. Using the Z boson for this purpose provides three huge advantages: First of all, its kinematics in proton-proton collisions show a significant dependence on the strong coupling constant; secondly, the kinematics can be precisely predicted and thirdly, once the Z boson is created and decayed in electrons or muons, it does not experience any further effects from the strong interaction. In this talk, we summarize the basic concepts of this measurement. Bio: https://mschott.web.cern.ch/mschott/ -- Steven Lowette https://cern.ch/lowette/

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Seminars-iihe June 2024