2024-10-14
14:38 |
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Signals, Noise and Signal processing in Particle Detectors
/ Riegler, Werner (speaker) (CERN)
These lectures discuss the basic processes that give rise to signals in particle detectors. The first lecture will summarize the main points from the 2019 lecture series on this topic (https://indico.cern.ch/event/843083/) and will discuss further extensions of the Ramo-Shockly theorem that are valid for the full extent of Maxwell’s equations without limitation to weak conductivity and can be e.g [...]
2024 - 3206.
Academic Training Lecture Regular Programme, 2024-2025
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In : Signals, Noise and Signal processing in Particle Detectors
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2024-10-10
15:06 |
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Analytic properties of scattering amplitudes
/ Hannesdottir, Hofie (speaker)
In this talk, we will explore intricate ways in which physical principles are encoded in scattering amplitudes. In particular, we will discuss the imprints of causality and crossing symmetry on the analyticity properties of scattering amplitudes, and show how different observables can be related to one another via analytic continuations. [...]
2024 - 4190.
Theory Colloquia
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In : Analytic properties of scattering amplitudes
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2024-10-09
14:46 |
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The Conformal Generators on the Fuzzy Sphere
/ Katz, Emanuel (speaker) (Boston U.)
We investigate the conformal algebra on the fuzzy sphere, and in particular the generators of translations and special conformal transformations which are emergent symmetries in the infinite IR, but are broken along the RG flow. We show how to extract these generators using the energy density. [...]
2024 - 4667.
TH String Theory Seminar
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In : The Conformal Generators on the Fuzzy Sphere
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2024-10-08
15:30 |
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Test of lepton flavour universality at LHCb with $B_s^0 \rightarrow \phi \ell^+\ell^-$ decays
/ Schmitt, Sebastian (speaker) (I. Physikalisches Institut, RWTH Aachen University, DE)
Decays mediated via $b\to s\ell^+\ell^-$ transitions are suppressed in the Standard Model and are thus sensitive probes of New Physics. Over the last decade, these processes have shown tensions with Standard Model predictions, most prominently in the differential decay rates and angular observables of $B^0\to K^{*0}\mu^+\mu^-$ and $B^0_s\to\phi\mu^+\mu^-$ decays.Lepton flavour universality (LFU) tests provide particularly clean tests of the Standard Model, since these are almost free of hadronic uncertainties [...]
2024 - 2715.
LHC Seminar
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In : Test of lepton flavour universality at LHCb with $B_s^0 \rightarrow \phi \ell^+\ell^-$ decays
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2024-10-04
13:44 |
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Non-invertible coset symmetry and fractionalization
/ Hsin, Po-Shen (speaker) (King's College London)
Coset symmetry arises in many systems such as Higgs phases of gauge theories and quantum spin liquids. When the coset is quotient by a non-normal subgroup, coset symmetry becomes a non-invertible symmetry. [...]
2024 - 3857.
TH String Theory Seminar
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In : Non-invertible coset symmetry and fractionalization
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2024-10-03
16:46 |
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Open Strings, Instantons and Heterotic Vacua
/ Righi, Nicole (speaker) (King's College London)
Motivated by closed string perturbation theory arguments, I consider nonperturbative effects in the string coupling in supersymmetric critical heterotic string theories that are stronger than field theory ones. I will argue that in 10D, such effects arise from heterotic “D-instantons,” i.e. [...]
2024 - 3304.
TH String Theory Seminar
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In : Open Strings, Instantons and Heterotic Vacua
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2024-10-03
08:55 |
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Probing the Standard Model to 0.37 ppm with the muon anomalous magnetic moment
/ Lellouch, Laurent (speaker) (CNRS & Aix-Marseille U.)
For the past fifty years, the Standard Model has been hugely successful in describing subatomic phenomena. However, recent measurements of the anomalous magnetic moment of the muon (a_mu) appear to challenge that statement, as they show a significant discrepancy with the reference Standard Model prediction. [...]
2024 - 4529.
Theory Colloquia
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In : Probing the Standard Model to 0.37 ppm with the muon anomalous magnetic moment
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2024-09-26
13:47 |
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New measurement of the K+ -> pi+nunu decay by the NA62 Experiment
/ Swallow, Joel Christopher (speaker) (INFN - Laboratori Natzionali di Frascati)
The $K \to \pi \nu \bar\nu$ decay is a golden mode for flavour physics. Its branching ratio is predicted with high precision by the Standard Model to be less than $10^{-10}$, and this decay mode is highly sensitive to indirect effects of new physics up to the highest mass scales [...]
2024 - 3468.
EP Seminar
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In : New measurement of the K+ -> pi+nunu decay by the NA62 Experiment
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2024-09-19
16:38 |
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Exactly solvable irrelevant deformations and holography beyond AdS/CFT
/ Guica, Monica (speaker)
It is believed that gravity is holographic, namely that the gravitational dynamics in a given spacetime (region) can be encoded by a non-gravitational theory living on the boundary of that region. The AdS/CFT correspondence is an extremely successful concrete realization of the holographic idea; however, generalizing the holographic dictionary beyond AdS/CFT has proven to be difficult. [...]
2024 - 4133.
Theory Colloquia
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In : Exactly solvable irrelevant deformations and holography beyond AdS/CFT
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2024-09-18
10:52 |
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High-precision measurement of the W boson mass at CMS
/ Bendavid, Josh (speaker) (Massachusetts Inst. of Technology (US))
The W boson mass is measured using proton-proton collision data at corresponding to an integrated luminosity of 16.8 inverse fb recorded during 2016 by the CMS experiment. The W boson mass is obtained from a fit of the two-dimensional pT-η distribution in a sample of W→μν decays, categorized by charge, yielding one of the most precise measurements of the W mass to date.
Refreshments will be served at 10:30
2024 - Streaming video.
LHC Seminar
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In : High-precision measurement of the W boson mass at CMS
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