CERN Confirms Ultra-Rare B Meson Decay, Enabling Zeptometer-Scale Studies

CERN Confirms Ultra-Rare B Meson Decay, Enabling Zeptometer-Scale Studies

CERN scientists announced the observation of an ultra-rare decay of a neutral B meson into a muon-antimuon pair, a process seen about once in ten billion decays. Moneycontrol. com reported that the finding offers a new test of the Standard Model and a window onto the so-called Zeptoverse. Sci.

News noted that the measured rate aligns with Standard Model predictions for the B0→μ+μ− decay. Mirage News said the evidence was obtained with an upgraded LHCb detector built by researchers from the University of Liverpool. BBC highlighted that the measurement probes distances a hundred billion times smaller than an atom, opening new avenues for studying fundamental forces and dark matter.

Acteurs

University of Manchester CERN LHCb collaboration Professor Chris Parkes Professor Conor Fitzpatrick Professor Brian Cox UK Science and Technology Facilities Council UK Research and Innovation STFC Rutherford Appleton Laboratory

Lieux

CERN, Geneva, Switzerland University of Manchester, Manchester, United Kingdom Rutherford Appleton Laboratory, Didcot, United Kingdom

Articles

5 novembre 2026
1 au total
Particle Physicists Are Getting a First Glimpse Into the ‘Zeptoverse’
Particle Physicists Are Getting a First Glimpse Into the ‘Zeptoverse’

WIRED • 05 nov. 10h30

Scientists at CERN have observed a once-in-10-billion decay of a neutral B meson into a muon-antimuon pair, a result that could enable studies of phenomena at zeptometer scales.

Crédibilité 88% Manip. 8% Centre
4 novembre 2026
1 au total
What is the "Zeptoverse"? CERN scientists find evidence of rare particle decay after 42 years
What is the "Zeptoverse"? CERN scientists find evidence of rare particle decay after 42 years

Moneycontrol.com • 04 nov. 05h26

Physicists at CERN have observed evidence of a decay that occurs once in about 10 billion beauty particles, offering a new test of the Standard Model and a window onto the so-called Zeptoverse.

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3 novembre 2026
8 au total
CERN Physicists Find Evidence of Ultra-Rare Particle Decay
CERN Physicists Find Evidence of Ultra-Rare Particle Decay

Sci.News • 03 nov. 20h37

Researchers at CERN's LHCb experiment have observed a rare decay of B0 mesons into muon pairs, with a measured rate that aligns with Standard Model predictions.

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Physicists Find Evidence of Rarest Particle Decay After 42 Years
Physicists Find Evidence of Rarest Particle Decay After 42 Years

Mirage News • 03 nov. 16h36

Scientists at CERN's LHCb experiment have observed the first evidence of the ultra-rare decay of a beauty particle into two muons, using an upgraded detector built by University of Liverpool researchers.

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Physicists step closer to the 'Zeptoverse' after 42-year particle search
Physicists step closer to the 'Zeptoverse' after 42-year particle search

Phys.org • 03 nov. 15h40

Scientists at CERN's LHCb collaboration have observed evidence for the decay of a beauty meson into two muons, a process predicted to occur once in about 10 billion cases, marking a step toward more precise tests of the Standard Model.

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Warwick Physicists Find Rarest Beauty Particle Decay Evidence
Warwick Physicists Find Rarest Beauty Particle Decay Evidence

Mirage News • 03 nov. 14h44

Researchers from the University of Warwick and a UK-led team have observed the rare decay of a beauty particle into two muons at the LHCb experiment, achieving a 3.2-sigma statistical significance.

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LHCb Finds Evidence of Rare Particle Decay
LHCb Finds Evidence of Rare Particle Decay

Mirage News • 03 nov. 10h50

The LHCb experiment at CERN has observed evidence for the Bd → μ⁺μ⁻ decay with a significance of 3.2 sigma, marking the first single-experiment indication of this one-in-ten-billion process.

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Scientists Close In on Mysterious Zeptoverse After 40
Scientists Close In on Mysterious Zeptoverse After 40

The European Magazine • 03 nov. 09h50

Physicists from the University of Cambridge reported evidence of a decay occurring in one out of every ten billion beauty quarks, a result that could aid future investigations of the sub-zeptometre scale and dark matter.

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Physicists Near Zeptoverse After 42-Year Particle Search
Physicists Near Zeptoverse After 42-Year Particle Search

Mirage News • 03 nov. 06h08

Researchers from the University of Manchester contributed to the LHCb experiment's first evidence of the extremely rare B⁰_d → μ⁺μ⁻ decay, a result that tests the Standard Model and opens new avenues for probing physics at zeptometre scales.

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what is it and how will it transform physics?
what is it and how will it transform physics?

BBC • 03 nov. 06h01

Researchers at CERN have observed particle interactions at a scale a hundred billion times smaller than an atom, opening new avenues for studying fundamental forces and dark matter.

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