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HLT Scouting performance in 2024: muon triggers and objects
No full textThis note presents results on the physics performance of the muons reconstructed in the HLT-scouting triggers in 2024 pp data
Latest LHC results
No full textIn this talk, latest results from LHC (focusing on ATLAS and CMS) will be discussed
IPPOG is hiring
No full textIPPOG is looking for a part-time Scientific Secretary & Communication Officer to join the core team. If you’re passionate about science communication, collaboration, and outreach, we’d love to hear from you. Apply now: https://ippog.org/news/we-are-hiring-0 Deadline: 15 September 202
Measurements of differential cross-sections of production in the dilepton channel in collisions at = 13 TeV using the ATLAS detector
No full textAt the Large Hadron Collider, the final state is expected to be dominated by production with a contribution from single-top processes. Differential cross-sections for production in the dilepton decay channel are measured at the particle level as a function of various kinematic variables. The analysis is based on data from proton-proton collisions at a centre-of-mass energy of TeV, recorded by the ATLAS detector at the Large Hadron Collider over the period from 2015 to 2018, corresponding to an integrated luminosity of 140 fb. Measurements are performed within the fiducial phase-space defined by the presence of two -jets and one electron and one muon of opposite charges. The differential cross-sections are corrected for detector effects and unfolded to the particle level. Results are compared with predictions from Monte Carlo event generators at next-to-leading order in perturbative quantum chromodynamics. These measurements provide valuable constraints on the modelling of production and the interference between doubly resonant and singly resonant production.At the Large Hadron Collider, the final state is expected to be dominated by production with a contribution from single-top processes. Differential cross-sections for production in the dilepton decay channel are measured at the particle level as a function of various kinematic variables. The analysis is based on data from proton-proton collisions at a centre-of-mass energy of TeV, recorded by the ATLAS detector at the Large Hadron Collider over the period from 2015 to 2018, corresponding to an integrated luminosity of 140 fb. Measurements are performed within the fiducial phase-space defined by the presence of two -jets and one electron and one muon of opposite charges. The differential cross-sections are corrected for detector effects and unfolded to the particle level. Results are compared with predictions from Monte Carlo event generators at next-to-leading order in perturbative quantum chromodynamics. These measurements provide valuable constraints on the modelling of production and the interference between doubly resonant and singly resonant production
A final moment for the muon
No full text
PLEASE NOTE THE UNUSUAL TIME (14H00)
The Muon g-2 Experiment at Fermi National Accelerator Laboratory was designed to measure the muon magnetic anomaly, aµ, with a target precision of 140 parts-per-billion; a four-fold improvement over the former measurement from the early 2000s at Brookhaven National Laboratory (BNL). The experiment was motivated by the ~3.5 standard deviation between the BNL result and the Standard Model prediction of aµ; which could be a hint of new physics.
The Muon g-2 collaboration recently finished the analysis of the final three years of data taking. The average of all six years of data has resulted in a final precision of 127 ppb, surpassing our design goals. This new result will remain a benchmark test for any future extension of the Standard Model for years to come. The talk will give a short history, an overview of the experimental technique, and present the details of the analysis and the final result.
Refreshments will be served at 13:30</p
Top-quark mass, properties and cross-section in ATLAS and CMS
No full textLatest top-quark physics results are shown in cross-section, mass and properties. Excludes tt+X and EFT interpretation (covered in companion talk by CMS speaker
FONGIT: Force at CERN
No full textWith deep-tech innovation forecasted to unlock up to €8 trillion in value by 2030, this exclusive event brings together entrepreneurs from FONGIT and innovation-minded professionals from CERN to explore how science and startups can collaborate to shape the future. Hosted at CERN, the event offers a unique opportunity for both communities to connect, discover cutting-edge technology, and learn how to navigate the journey from lab to market
Results from the T2K experiment on neutrino mixing including a new far detector -like sample
No full textT2K has made improved measurements of three-flavor neutrino mixing with 19.7(16.3) protons on target in (anti-)neutrino-enhanced beam modes. A new sample of muon-neutrino events with tagged pions has been added at the far detector, increasing the neutrino-enhanced muon-neutrino sample size by 42.5%. In addition, new samples have been added at the near detector, and significant improvements have been made to the flux and neutrino interaction modeling. T2K data continues to prefer the normal mass ordering and upper octant of with a near-maximal value of the charge-parity violating phase with best-fit values in the normal ordering of , and eV
Operation and performance of the CMS silicon strip tracker with proton-proton collisions at the CERN LHC
No full textSalient aspects of the commissioning, calibration, and performance of the CMS silicon strip tracker are discussed, drawing on experience during operation with proton-proton collisions delivered by the CERN LHC. The data were obtained with a variety of luminosities. The operating temperature of the strip tracker was changed several times during this period and results are shown as a function of temperature in several cases. Details of the system performance are presented, including occupancy, signal-to-noise ratio, Lorentz angle, and single-hit spatial resolution. Saturation effects in the APV25 readout chip preamplifier observed during early Run 2 are presented, showing the effect on various observables and the subsequent remedy. Studies of radiation effects on the strip tracker are presented both for the optical readout links and the silicon sensors. The observed effects are compared to simulation, where available, and they generally agree well with expectations.Salient aspects of the commissioning, calibration, andperformance of the CMS silicon strip tracker are discussed, drawingon experience during operation with proton-proton collisionsdelivered by the CERN LHC. The data were obtained with a varietyof luminosities. The operating temperature of the strip tracker waschanged several times during this period and results are shown as afunction of temperature in several cases. Details of the systemperformance are presented, including occupancy, signal-to-noiseratio, Lorentz angle, and single-hit spatial resolution. Saturationeffects in the APV25 readout chip preamplifier observed during earlyRun 2 are presented, showing the effect on various observables andthe subsequent remedy. Studies of radiation effects on the striptracker are presented both for the optical readout links and thesilicon sensors. The observed effects are compared to simulation,where available, and they generally agree well with expectations.Salient aspects of the commissioning, calibration, and performance of the CMS silicon strip tracker are discussed, drawing on experience during operation with proton-proton collisions delivered by the CERN LHC. The data were obtained with a variety of luminosities. The operating temperature of the strip tracker was changed several times during this period and results are shown as a function of temperature in several cases. Details of the system performance are presented, including occupancy, signal-to-noise ratio, Lorentz angle, and single-hit spatial resolution. Saturation effects in the APV25 readout chip preamplifier observed during early Run 2 are presented, showing the effect on various observables and the subsequent remedy. Studies of radiation effects on the strip tracker are presented both for the optical readout links and the silicon sensors. The observed effects are compared to simulation, where available, and they generally agree well with expectations