2025-03-20
16:18 |
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Measurement of the Z boson mass with the LHCb detector
/ Muhammad, Emir (speaker) (University of Warwick (GB))
In the Standard Model, the Z boson acquires its mass of around 91 GeV through its gauge interaction with the vacuum energy of the Higgs field. Including higher order corrections the Z mass is predicted with a precision of better than 10 MeV, which corresponds to one part in 10,000. The Z mass was measured to 2 MeV by the four LEP experiments in a beam-energy scan of the LEP e+e- collider. Meanwhile, hadron collider experiments have dominated the measurements of the W boson mass, but their studies of the Z boson mass have been primarily in the context of calibrations for the W mass analyses.
Here we present the first dedicated Z boson mass measurement in proton-proton collisions. The data were recorded in 2016 by the LHCb experiment and correspond to an integrated luminosity of 1.7 fb-1. The Z mass is determined from a fit to the dimuon mass distribution in Z -> mu+mu- decays. Templates from simulation are used in the fit, with a momentum calibration based on quarkonium resonance decays. The result is compared with previous measurements of the Z mass and with the predicted value from the global electroweak fit.
Refreshments will be served at 10h30
2025 - 3726.
LHC Seminar
External link: Event details
In : Measurement of the Z boson mass with the LHCb detector
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2025-03-20
16:18 |
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Recent Results from the Atacama Cosmology Telescope: Implications for our Understanding of Cosmology and Fundamental Physics
/ Spergel, David (speaker)
The Atacama Cosmology Telescope has recently reported the most accurate measurements of temperature and polarization of the cosmic microwave background. I will highlight these results and their implications for our understanding of cosmology. The new measurements constrain the number and mass of neutrinos, the presence of new light particles, the properties of dark matter and dark energy, and the physics of inflation..
2025 - 3252.
Theory Colloquia
External link: Event details
In : Recent Results from the Atacama Cosmology Telescope: Implications for our Understanding of Cosmology and Fundamental Physics
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2025-03-17
16:22 |
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Non Ferrous Materials
/ Aviles Santillana, Ignacio (speaker) (CERN)
2024 - 2979.
CERN Accelerator School; Mechanical & Materials Engineering for Particle Accelerators and Detectors, 2-15 June 2024, Sint-Michielsgestel, Netherlands
External links: Talk details; Event details
In : Mechanical & Materials Engineering for Particle Accelerators and Detectors, 2-15 June 2024, Sint-Michielsgestel, Netherlands
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2025-03-17
16:22 |
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Mechanical Testing
/ Weiss, Klaus-Peter (speaker) (KIT, Institute for Technical Physics)
2024 - 3342.
CERN Accelerator School; Mechanical & Materials Engineering for Particle Accelerators and Detectors, 2-15 June 2024, Sint-Michielsgestel, Netherlands
External links: Talk details; Event details
In : Mechanical & Materials Engineering for Particle Accelerators and Detectors, 2-15 June 2024, Sint-Michielsgestel, Netherlands
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2025-03-17
16:21 |
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Non Destructive Testing
/ Arnau Izquierdo, Gonzalo (speaker) (CERN)
2024 - 3429.
CERN Accelerator School; Mechanical & Materials Engineering for Particle Accelerators and Detectors, 2-15 June 2024, Sint-Michielsgestel, Netherlands
External links: Talk details; Event details
In : Mechanical & Materials Engineering for Particle Accelerators and Detectors, 2-15 June 2024, Sint-Michielsgestel, Netherlands
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2025-03-17
16:21 |
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Computational Tools II (fabrication)
/ Carra, Federico (speaker) (CERN)
2024 - 2768.
CERN Accelerator School; Mechanical & Materials Engineering for Particle Accelerators and Detectors, 2-15 June 2024, Sint-Michielsgestel, Netherlands
External links: Talk details; Event details
In : Mechanical & Materials Engineering for Particle Accelerators and Detectors, 2-15 June 2024, Sint-Michielsgestel, Netherlands
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2025-03-17
16:21 |
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Steels & Stainless Steels I
/ Sgobba, Stefano (speaker) (CERN)
2024 - 3203.
CERN Accelerator School; Mechanical & Materials Engineering for Particle Accelerators and Detectors, 2-15 June 2024, Sint-Michielsgestel, Netherlands
External links: Talk details; Event details
In : Mechanical & Materials Engineering for Particle Accelerators and Detectors, 2-15 June 2024, Sint-Michielsgestel, Netherlands
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2025-03-17
13:43 |
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Colliders
/ Schmickler, Hermann (speaker)
2024 - 3243.
CERN Accelerator School; Mechanical & Materials Engineering for Particle Accelerators and Detectors, 2-15 June 2024, Sint-Michielsgestel, Netherlands
External links: Talk details; Event details
In : Mechanical & Materials Engineering for Particle Accelerators and Detectors, 2-15 June 2024, Sint-Michielsgestel, Netherlands
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2025-03-17
13:43 |
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Alignment and Metrology
/ Mainaud Durand, Helene (speaker) (CERN)
2024 - 2873.
CERN Accelerator School; Mechanical & Materials Engineering for Particle Accelerators and Detectors, 2-15 June 2024, Sint-Michielsgestel, Netherlands
External links: Talk details; Event details
In : Mechanical & Materials Engineering for Particle Accelerators and Detectors, 2-15 June 2024, Sint-Michielsgestel, Netherlands
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2025-03-17
13:43 |
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Beam Instrumentation
/ Veness, Raymond (speaker) (CERN)
2024 - 2828.
CERN Accelerator School; Mechanical & Materials Engineering for Particle Accelerators and Detectors, 2-15 June 2024, Sint-Michielsgestel, Netherlands
External links: Talk details; Event details
In : Mechanical & Materials Engineering for Particle Accelerators and Detectors, 2-15 June 2024, Sint-Michielsgestel, Netherlands
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