Eksperimen LHCb temukan petunjuk fisika di luar model standar

Para peneliti di Large Hadron Collider CERN telah mengamati peluruhan partikel yang menyimpang dari prediksi Model Standar. Temuan ini berasal dari eksperimen LHCb dan menunjukkan ketegangan empat standar deviasi dengan teori tersebut. Jika dikonfirmasi, hasil ini dapat mengarah pada penemuan partikel atau gaya yang belum diketahui.

Data tersebut berasal dari studi tentang "peluruhan penguin" langka yang melibatkan meson B, yang berubah menjadi kaon, pion, dan dua muon. Para ilmuwan memeriksa sudut, energi, dan laju peluruhan menggunakan catatan sekitar 650 miliar peluruhan meson B yang dikumpulkan antara tahun 2011 dan 2018. Pengukuran tersebut berbeda dari ekspektasi Model Standar, dengan kemungkinan hanya satu banding 16.000 bahwa fluktuasi acak dapat menjelaskan perbedaan tersebut jika teorinya benar.

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