LHCb Experiment at CERN

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LHCb Experiment at CERN

LHCb is an experiment set up to explore what happened after the Big Bang that allowed matter to survive and build the Universe we inhabit today Stay on topic.

Fourteen billion years ago, the Universe began with a bang. Crammed within an infinitely small space, energy coalesced to form equal quantities of matter and antimatter. But as the Universe cooled and expanded, its composition changed. Just one second after the Big Bang, antimatter had all but disappeared, leaving matter to form everything that we see around us — from the stars and galaxies, to th

e Earth and all life that it supports. LHCb is an experiment set up to explore what happened after the Big Bang that allowed matter to survive and build the Universe we inhabit today

Take a tour on Google Street View: https://www.google.ch/maps/place/LHCb/@46.2411854,6.0963633,3a,75y,5.11h,90t/data=!3m7!1e1!3m5!1sr54U0NCwqKUAAAQJODj02A!2e0!3e2!7i13312!8i6656!4m2!3m1!1s0x0:0xa53356ba4ae5e668!6m1!1e1?hl=fr
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08/04/2026

What does it take to make the invisible visible? 🔬

In this interview, Federica Oliva (Project Associate at CERN, RICH Operation Coordinator and Deputy Run Coordinator for the 2026 data taking) walks us through LHCb’s recent observation of the Ξcc⁺ particle and how the upgrade of the LHCb detector made it possible.

As future upgrades face growing uncertainty due to funding cuts, what’s at stake goes beyond a single experiment. Supporting particle physics matters not only for fundamental research, but for its wider applications, including medical physics.

17/03/2026

Today at the Moriond conference, the LHCb experiment at CERN announced the discovery of a new proton-like particle: the Ξcc⁺.

Like a proton, which is made of two up quarks and one down quark (uud), this new particle contains two charm quarks and one down quark (ccd), making it about four times heavier than a proton.

The particle was observed in proton–proton collisions recorded during Run 3 of the Large Hadron Collider. Notably, it could not be seen in data from Runs 1 and 2, but became visible with the improved capabilities of the upgraded LHCb detector using 2024 data.

This makes Ξcc⁺ the first new particle discovered with the upgraded detector, a result that will help physicists test models of the strong force that binds quarks together.

Read more about the new particle:https://lhcb-outreach.web.cern.ch/2026/03/17/observation-of-the-doubly-charmed-heavy-proton-%ce%becc/

05/03/2026

🚀 The LHCb collaboration has launched the LHCb Ntupling Service, a new web platform that allows users to create custom datasets from LHCb Open Data. For the first time, both Run I and Run II proton–proton data (over 4 PB of data! 👀) are available on CERN Open Data for public access.

With the easy-to-use Ntuple Wizard🧙‍♂️🪄, you can easily select physics objects, choose datasets, and generate your own ntuples for analysis, no experiment-specific software required!

Many thanks to the Information Technology Department and the LHCb team for making this possible. A big step forward for open science and accessible particle physics data! 🔬✨

20/02/2026

Artificial intelligence (AI) has become a powerful tool for many researches at . Experiments such as have already integrated AI into their analyses.
🪄And now, following this trend, the LHCb collaboration has published two papers demonstrating how AI enhances the study of top quark and Higgs boson production, improving precision in challenging measurements.
📈This progress brings LHCb closer to measuring the Higgs boson’s properties in the upcoming High-Luminosity phase of the LHC.
Read the full news article here: https://lhcb-outreach.web.cern.ch/2026/02/15/chasing-top-quarks-and-higgs-bosons-with-artificial-intelligence/

12/02/2026

On 11th February we celebrated the International Day of Women and Girls in Science by arranging a special Masterclass with and led by an all-female group of moderators from LHCb.

From analysing real data to connecting via live videoconferene, the next generation of female physicists showed up and leveled up.👩‍🔬🖥

A huge thank you to all the institutes, moderators, and students who made this a splendid celebration of equal participation and scientific excellence! 🌟

16/01/2026

Speciale M'illumino di Meno dal CERN del 16/01/2026 - Radio2 Caterpillar - La XXII edizione di M'illumino di Meno parte dal CERN di Ginevra. Quest'anno la storica campagna di Rai Radio2 per la sostenibilità è dedicata alla scienza: al centro, il contributo di scienziate e scienziati impegnati nell...

24/12/2025

2025 has been a successful year for LHCb.�We reached a recorded luminosity of 11.8 fb⁻¹ in pp collisions and 0.86 nb⁻¹ in lead–lead collisions, collecting a rich dataset across different running conditions.

None of this would have been possible without the LHCb people working behind the scenes — in the control room and beyond — making it all happen day after day.

Enjoy this small showcase of our collaboration and the people behind the data.

Happy holidays to all members of the LHCb collaboration, to your families, and to all our followers.�
Wishing everyone a great end of the year and an exciting 2026 ahead! ✨

13/11/2025

🎉 This year marks the 15th anniversary of the LHCb Implications Workshop 🎉
a key event bringing together experimentalists and theorists!

We spoke with Patrick Koppenburg (Nikhef) and Marzia Bordone (University of Zurich) about how this workshop has helped bridge the gap between theory and experiment, fostering new insights within the LHCb community!

Enjoy the video, and don’t miss Patrick’s story about CP violation in charm! 😉

10/10/2025

🌍 LHCb Around the World – Episode 1: Dortmund!

Have you ever wondered what LHCb looks like beyond the experiment site?
LHCb is much more than what happens at CERN — it’s a global collaboration made up of institutes and universities all around the world, where researchers, students, and engineers contribute to data analysis, detector development, and much more.

In this first episode, join us for a day in the lab with Jannis and the Dortmund team for a behind-the-scenes look at their labs, offices, and the people who make LHCb science happen every day.

🎥 Stay tuned — this is just the beginning. Where will LHCb take us next?

15/09/2025

Last week we presented our latest results on the angular analysis of B→K*μμ decays, using the Run 1 + Run 2 dataset.

🔍 Our findings confirm what we and our colleagues have seen before: a significant tension with the Standard Model predictions in the P5′ observable and the forward–backward asymmetry (AFB). These anomalies could be hints of new physics beyond the Standard Model — but more data is needed to be sure.

Let’s stay tuned for what the new data from Run 3 will bring us! ✨

Check our public page (in the bio) for more details!

29/08/2025

✨ Big milestone for LHCb this week!
Since the start of data-taking in May this year, we’ve already recorded 6 fb⁻¹ of proton-proton collisions 🚀
All of this while operating at over 90% data taking efficiency 🔥
And the year is far from being over — with 3 more months to go, we can’t wait to see the strange, charming, and beautiful physics that will come out of this dataset 💫

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