Chris G
@20dm.bsky.social
Particle physicist on the #ATLAS experiment & #RSE at #UCL ARC. Working on Monte Carlo event generators, #LHC collider data analysis, and high-performance computing for #HEP. Core developer of tools like Rivet & YODA. Views are my own.
Excited to join the 2026 Fellowship cohort and to work with the community on sustainable research software. 😊 Looking forward to the year ahead! 🌱🚀
🧭 We are happy to announce our new #SSIFellows! Read more about this year's applications and the 2026 cohort at www.software.ac.uk/news/introdu...
December 11, 2025 at 1:37 PM
Excited to join the 2026 Fellowship cohort and to work with the community on sustainable research software. 😊 Looking forward to the year ahead! 🌱🚀
Reposted by Chris G
Breaking: It has stopped raining in Munich.
August 5, 2025 at 1:26 PM
Breaking: It has stopped raining in Munich.
Reposted by Chris G
🚀 New Rivet 4.1.1 release!
🔹 Remote HepMC source support (e.g. xrootd)
🔹 Differential negative-weight plots via MC_WEIGHTS
🔹 Runtime toggle for event smearing
🔹 ONNX inference supports both float & double
🔹 Improved DileptonFinder + DIS projection robustness
🔹 New & updated LHC/HERA analyses!
🔹 Remote HepMC source support (e.g. xrootd)
🔹 Differential negative-weight plots via MC_WEIGHTS
🔹 Runtime toggle for event smearing
🔹 ONNX inference supports both float & double
🔹 Improved DileptonFinder + DIS projection robustness
🔹 New & updated LHC/HERA analyses!
August 6, 2025 at 9:58 PM
🚀 New Rivet 4.1.1 release!
🔹 Remote HepMC source support (e.g. xrootd)
🔹 Differential negative-weight plots via MC_WEIGHTS
🔹 Runtime toggle for event smearing
🔹 ONNX inference supports both float & double
🔹 Improved DileptonFinder + DIS projection robustness
🔹 New & updated LHC/HERA analyses!
🔹 Remote HepMC source support (e.g. xrootd)
🔹 Differential negative-weight plots via MC_WEIGHTS
🔹 Runtime toggle for event smearing
🔹 ONNX inference supports both float & double
🔹 Improved DileptonFinder + DIS projection robustness
🔹 New & updated LHC/HERA analyses!
Reposted by Chris G
Thanks to all who joined! 👏
If you’re a PhD student or early-career postdoc working with Monte Carlo event generators, keep an eye out for next year’s school—you won’t want to miss it.
#MCnet #HEP #ParticlePhysics #MonteCarlo
If you’re a PhD student or early-career postdoc working with Monte Carlo event generators, keep an eye out for next year’s school—you won’t want to miss it.
#MCnet #HEP #ParticlePhysics #MonteCarlo
June 17, 2025 at 9:07 AM
Thanks to all who joined! 👏
If you’re a PhD student or early-career postdoc working with Monte Carlo event generators, keep an eye out for next year’s school—you won’t want to miss it.
#MCnet #HEP #ParticlePhysics #MonteCarlo
If you’re a PhD student or early-career postdoc working with Monte Carlo event generators, keep an eye out for next year’s school—you won’t want to miss it.
#MCnet #HEP #ParticlePhysics #MonteCarlo
Reposted by Chris G
📸 A fantastic week at the MCnet Summer School 2025 in Stirling!
From matrix elements and parton showers to neutrino generators, ML, HPC and Public Health—great lectures, hands-on tutorials, and plenty of good conversations (and Scottish weather).
From matrix elements and parton showers to neutrino generators, ML, HPC and Public Health—great lectures, hands-on tutorials, and plenty of good conversations (and Scottish weather).
June 17, 2025 at 9:07 AM
📸 A fantastic week at the MCnet Summer School 2025 in Stirling!
From matrix elements and parton showers to neutrino generators, ML, HPC and Public Health—great lectures, hands-on tutorials, and plenty of good conversations (and Scottish weather).
From matrix elements and parton showers to neutrino generators, ML, HPC and Public Health—great lectures, hands-on tutorials, and plenty of good conversations (and Scottish weather).
Reposted by Chris G
🚀 CONTUR 3 is here!
CONTUR uses RIVET and its library of LHC measurements to test new physics models via fast limit-setting and consistency checks.
New features include:
✔️ Better stat treatments
✔️ Efficiency gains
✔️ More measurements & SM predictions
🧵
CONTUR uses RIVET and its library of LHC measurements to test new physics models via fast limit-setting and consistency checks.
New features include:
✔️ Better stat treatments
✔️ Efficiency gains
✔️ More measurements & SM predictions
🧵
May 18, 2025 at 7:30 AM
🚀 CONTUR 3 is here!
CONTUR uses RIVET and its library of LHC measurements to test new physics models via fast limit-setting and consistency checks.
New features include:
✔️ Better stat treatments
✔️ Efficiency gains
✔️ More measurements & SM predictions
🧵
CONTUR uses RIVET and its library of LHC measurements to test new physics models via fast limit-setting and consistency checks.
New features include:
✔️ Better stat treatments
✔️ Efficiency gains
✔️ More measurements & SM predictions
🧵
Reposted by Chris G
Absolutely appalled by GitHub not reversing the decision to lock down @organicmaps.bsky.social repo because a collaborator was in a US-sanctioned country. 😱 #opensource projects should be on high alert and consider moving away from GitHub. 🤬 mastodon.social/@organicmaps...
Organic Maps (@[email protected])
Attached: 1 image
We have a temporary glitch with GitHub—probably some contributor was geolocated in a sanctioned region (no details yet). All required documents to unlock the account have been uploa...
mastodon.social
March 28, 2025 at 8:41 AM
Absolutely appalled by GitHub not reversing the decision to lock down @organicmaps.bsky.social repo because a collaborator was in a US-sanctioned country. 😱 #opensource projects should be on high alert and consider moving away from GitHub. 🤬 mastodon.social/@organicmaps...
Reposted by Chris G
Really happy to see this paper out: arxiv.org/abs/2503.19836
More on why, WTF it means etc later :-)
More on why, WTF it means etc later :-)
A measurement of the high-mass $τ\barτ$ production cross-section at $\sqrt{s}=13$ TeV with the ATLAS detector and constraints on new particles and couplings
The production cross-section of high-mass $τ$-lepton pairs is measured as a function of the dilepton visible invariant mass, using 140 fb$^{-1}$ of $\sqrt{s}=13$ TeV proton-proton collision data recor...
arxiv.org
March 26, 2025 at 10:44 AM
Really happy to see this paper out: arxiv.org/abs/2503.19836
More on why, WTF it means etc later :-)
More on why, WTF it means etc later :-)
Reposted by Chris G
🗓️ Early-bird registration for the MCnet Summer School closes 31st March!
If you’re planning to attend, now’s the time to sign up.
Hope to see many of you in Stirling this June! 🏰⚛️🚀
🔗 indico.cern.ch/e/mcnet2025
If you’re planning to attend, now’s the time to sign up.
Hope to see many of you in Stirling this June! 🏰⚛️🚀
🔗 indico.cern.ch/e/mcnet2025
Exciting news! The 18th #MCnet Summer School on Monte Carlo event generators will be held at the University of #Stirling, Scotland, from 9–13 June 2025. A must-attend for PhD students & postdocs in #ParticlePhysics! 🧵
March 26, 2025 at 4:51 PM
🗓️ Early-bird registration for the MCnet Summer School closes 31st March!
If you’re planning to attend, now’s the time to sign up.
Hope to see many of you in Stirling this June! 🏰⚛️🚀
🔗 indico.cern.ch/e/mcnet2025
If you’re planning to attend, now’s the time to sign up.
Hope to see many of you in Stirling this June! 🏰⚛️🚀
🔗 indico.cern.ch/e/mcnet2025
🚀 PhD Opportunity: Accelerating One-Loop Amplitude Calculations for the HL-LHC 🧵
February 27, 2025 at 8:35 AM
🚀 PhD Opportunity: Accelerating One-Loop Amplitude Calculations for the HL-LHC 🧵
Reposted by Chris G
🚀 Contur 3.1.0 is here! 🎉
This release is designed for use with Rivet 4.0.3 & YODA 2.0.3 and brings:
✔️ Signal strength fitting via Spey
✔️ Several new measurements
✔️ Various improvements & fixes
Get the latest version here: gitlab.com/hepcedar/con...
#HEP #OpenScience #Contur
This release is designed for use with Rivet 4.0.3 & YODA 2.0.3 and brings:
✔️ Signal strength fitting via Spey
✔️ Several new measurements
✔️ Various improvements & fixes
Get the latest version here: gitlab.com/hepcedar/con...
#HEP #OpenScience #Contur
Contur 3.1.0 · Cedar / Contur · GitLab
Contur release intended for use with Rivet 4.0.3, Yoda 2.0.3, Spey 0.2.0 Includes new measurements, new statistics functionality from Spey (fitting of signal strength), and various...
gitlab.com
February 25, 2025 at 8:20 AM
🚀 Contur 3.1.0 is here! 🎉
This release is designed for use with Rivet 4.0.3 & YODA 2.0.3 and brings:
✔️ Signal strength fitting via Spey
✔️ Several new measurements
✔️ Various improvements & fixes
Get the latest version here: gitlab.com/hepcedar/con...
#HEP #OpenScience #Contur
This release is designed for use with Rivet 4.0.3 & YODA 2.0.3 and brings:
✔️ Signal strength fitting via Spey
✔️ Several new measurements
✔️ Various improvements & fixes
Get the latest version here: gitlab.com/hepcedar/con...
#HEP #OpenScience #Contur
#FOSDEM25 was an incredible mix of great talks, fascinating discussions, and the usual controlled chaos of 8,000+ FOSS enthusiasts in one place! 🎤💻 I’ve written up my reflections on the experience—check out my blog post here: blogs.ucl.ac.uk/research-sof... #FOSDEM #OpenScience #FOSS
FOSDEM 2025: A Weekend of Talks, Conversations, and Controlled Chaos | UCL Centre for Advanced Research Computing
UCL Homepage
blogs.ucl.ac.uk
February 17, 2025 at 10:18 AM
#FOSDEM25 was an incredible mix of great talks, fascinating discussions, and the usual controlled chaos of 8,000+ FOSS enthusiasts in one place! 🎤💻 I’ve written up my reflections on the experience—check out my blog post here: blogs.ucl.ac.uk/research-sof... #FOSDEM #OpenScience #FOSS
Reposted by Chris G
🚀 New patch releases! We’re pleased to announce Rivet 4.0.3 and YODA 2.0.3, featuring important enhancements and bug fixes. Both are available now—get them at:
🔗 rivet.hepforge.org/
🔗 yoda.hepforge.org/
Upgrade today and let us know if you have any feedback! #HEP #OpenScience #Rivet #YODA
🔗 rivet.hepforge.org/
🔗 yoda.hepforge.org/
Upgrade today and let us know if you have any feedback! #HEP #OpenScience #Rivet #YODA
February 9, 2025 at 8:56 PM
🚀 New patch releases! We’re pleased to announce Rivet 4.0.3 and YODA 2.0.3, featuring important enhancements and bug fixes. Both are available now—get them at:
🔗 rivet.hepforge.org/
🔗 yoda.hepforge.org/
Upgrade today and let us know if you have any feedback! #HEP #OpenScience #Rivet #YODA
🔗 rivet.hepforge.org/
🔗 yoda.hepforge.org/
Upgrade today and let us know if you have any feedback! #HEP #OpenScience #Rivet #YODA
Had a great time presenting #LHC analysis preservation with Rivet at #FOSDEM (despite getting interrupted by Trump 👀)! If you missed it, the recording is now available here: fosdem.org/2025/schedul... Quick recap of what I covered—🧵
February 9, 2025 at 8:57 AM
Had a great time presenting #LHC analysis preservation with Rivet at #FOSDEM (despite getting interrupted by Trump 👀)! If you missed it, the recording is now available here: fosdem.org/2025/schedul... Quick recap of what I covered—🧵
Reposted by Chris G
My talk on HPC-friendly histogramming in C++ with YODA at #FOSDEM is now online in case you missed it: fosdem.org/2025/schedule/event/fosdem-2025-4809-efficient-histogramming-for-high-performance-computing-in-c-with-yoda/ Quick recap of key points—🧵
February 8, 2025 at 10:01 PM
My talk on HPC-friendly histogramming in C++ with YODA at #FOSDEM is now online in case you missed it: fosdem.org/2025/schedule/event/fosdem-2025-4809-efficient-histogramming-for-high-performance-computing-in-c-with-yoda/ Quick recap of key points—🧵
Reposted by Chris G
All UK parties (except Conservatives, marginally) have voter bases that prefer proportional representation over first-past-the-post.
February 3, 2025 at 1:10 PM
All UK parties (except Conservatives, marginally) have voter bases that prefer proportional representation over first-past-the-post.
Reposted by Chris G
Interested? Applications are now open! Apply at indico.cern.ch/e/mcnet2025 and join us in #Scotland for an intensive, hands-on learning experience with some of the best in the field. #MCnet #HEP #ParticlePhysics #MonteCarlo
MCnet Summer School 2025
The 18th MCnet school will be held at Stirling, Scotland. Stirling is one of the historic “royal burghs” of Scotland, on the edge of the lowlands and highlands, with a famous castle, monuments, and cl...
indico.cern.ch
February 2, 2025 at 9:37 AM
Interested? Applications are now open! Apply at indico.cern.ch/e/mcnet2025 and join us in #Scotland for an intensive, hands-on learning experience with some of the best in the field. #MCnet #HEP #ParticlePhysics #MonteCarlo
Reposted by Chris G
Set in #Stirling, Scotland, a historic city at the meeting point of the Highlands & Lowlands, this school offers not just physics but also sightseeing, hillwalking & distillery tours! 🏰🥃
February 2, 2025 at 9:37 AM
Set in #Stirling, Scotland, a historic city at the meeting point of the Highlands & Lowlands, this school offers not just physics but also sightseeing, hillwalking & distillery tours! 🏰🥃
Reposted by Chris G
We’re also featuring guest lectures on MC & data science in public health modelling & public policy—showing the broad impact of simulation techniques beyond particle physics. Come learn & discuss!
February 2, 2025 at 9:37 AM
We’re also featuring guest lectures on MC & data science in public health modelling & public policy—showing the broad impact of simulation techniques beyond particle physics. Come learn & discuss!
Reposted by Chris G
Beyond collider physics, this year’s school expands to neutrino event generators, electroweak modelling, machine learning, and high-performance computing—reflecting the growing intersections in #HEP & computational science.
February 2, 2025 at 9:37 AM
Beyond collider physics, this year’s school expands to neutrino event generators, electroweak modelling, machine learning, and high-performance computing—reflecting the growing intersections in #HEP & computational science.
Reposted by Chris G
This school provides a solid foundation in MC event-generator simulation, from matrix elements & parton showers to hadronisation & theory-compatible measurements—through talks & hands-on tutorials from leading experts.
February 2, 2025 at 9:37 AM
This school provides a solid foundation in MC event-generator simulation, from matrix elements & parton showers to hadronisation & theory-compatible measurements—through talks & hands-on tutorials from leading experts.