International Particle Physics Outreach Group WG on Explaining Particle Physics to the Public Barbora Bruant Gulejova, Ivan Melo, Thomas Naumann, Farid Ould-Saada, Alberto Ruiz, Jonivar Skullerud Explain the outstanding physics issues to
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Presentation Transcript
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International Particle Physics Outreach Group WG on Explaining Particle Physics to the Public
Barbora Bruant Gulejova, Ivan Melo, Thomas Naumann, Farid Ould-Saada, Alberto Ruiz, Jonivar Skullerud<br>
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Explain the outstanding physics issues to the general public, lay persons and decision makers
Cosmic connection: Macrocosm: Dark energy, Dark matter Microcosm: Scalar fields, BSM, neutrinos, …
No clear Nobel predictions from Standard Model! But:
What is the role of scalar fields in the Universe?
Precisely investigate the SM with focus on the Higgs.
new colliders: e+e-, circular + linear, Higgs factories “Higgs factory” - How to formulate it making it attractive and understandable for laymen? Why do we need it? arguments:
Higgs can be portal to new physics… it could even point to break of paradigm….
Long-term time scales of machines / historical approach (e.g. LHC planned in parallel with LEP, FCC: 50 y WG Explaining PP to Lay Audience 27nd IPPOG meeting, 23 April 2024, Madrid 2 Explain open questions of particle physics to the public 2<br>
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3 https://docs.google.com/document/d/1XG_QaKNUJKnL9qOYbPixrgoNMsw40jygu5cjHJCPURQ/edit
do not reinvent the wheel: link to
CERN backgrounders
IPPOG newsletters, Symmetry articles, ...
Focus on uncovered topics:
scalar era
precision in PP
...
IPPPOG student: put links + new docs to web 27nd IPPOG meeting, 23 April 2024, Madrid realistic effort: priorities<br>
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4 The Scalar Era
Physics for 500 years deals with forces. Forces or interactions like Newton’s gravity or electromagnetism are represented by vector fields pointing from one point to another. Vectors are described by three coordinates at each space point.
Scalar fields are much simpler. They represent just one number per space point. As can be seen from the figures, weather forecasts, for example, contain the scalar fields of temperature, humidity, and pressure. They are not fundamental, however, since they emerge from averaging over the microscopic properties of the air molecules. Wind maps contain vectors and are not fundamental either.
For the first time in the history of physics we go from studying fundamental vector fields of forces to fundamental scalar fields which do not mediate forces. They are omnipresent background fields which fill up the vacuum in the Universe. Such fundamental scalar fields are:
the Higgs field, Dark Energy, and the field of inflation.<br>
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We need to continue to investigate SM with focus on Higgs: something wrong with vacuum!
Follow the E-M story (Faraday, Maxwell, Lorentz, ether, Einstein, …)
21st century: Go from vector to scalar era !
Watch Higgs at work: mass dependence of couplings, Higgs self coupling, …
Shape of (effective) potential, (meta)stability of universe
Electroweak phase transition, symmetry breaking
Are there more (BSM) Higgs bosons? Higgs decay, parity restauration…
Hierarchy problem
Higgs gives mass to fermions, but what about neutrinos: leptogenesis, Majorana neutrinos... WG Explaining PP to Lay Audience 27nd IPPOG meeting, 23 April 2024, Madrid 5 Explain the need for a new e+e- collider to the public<br>
