All articles tagged with #b meson
Researchers at CERN's LHCb observed ~650 billion B-meson decays and found a four-sigma discrepancy with Standard Model predictions in rare penguin-like decays, a potential hint of new physics. If confirmed, explanations could involve a Z' boson or leptoquarks; further analysis of data since 2018 and upgrades planned for the 2030s are expected to clarify whether this is genuine new physics or a statistical fluctuation.
LHCb’s study of a rare penguin decay—B mesons decaying to a kaon and two muons—shows angular distributions that differ from Standard Model predictions at about 4 sigma, hinting that new particles could enter the decay loop. Possible explanations include a heavier Z’ boson or leptoquarks, with CMS hinting at a compatible but less significant signal. The analysis uses ~650 billion decays from 2011–2018, making this one of the most intriguing LHC anomalies, though it could still be affected by charming-penguin effects. Further data are needed to confirm any new physics.
New LHCb results on rare B-meson decays, corroborated by CMS data, show tensions with Standard Model predictions in electroweak penguin processes, hinting at heavy new particles such as leptoquarks. While not definitive, the anomalies are growing and future LHC upgrades and larger datasets may confirm a need for new physics beyond the Standard Model.