El experimento LHCb encuentra indicios de física más allá del modelo estándar

Investigadores del Gran Colisionador de Hadrones del CERN han observado desintegraciones de partículas que se desvían de las predicciones del Modelo Estándar. Los hallazgos provienen del experimento LHCb y muestran una tensión de cuatro desviaciones estándar con respecto a la teoría. De confirmarse, los resultados podrían apuntar a la existencia de partículas o fuerzas aún no descubiertas.

Los datos provienen de estudios sobre las raras "desintegraciones tipo pingüino" que involucran mesones B, los cuales se transforman en un kaón, un pión y dos muones. Los científicos examinaron ángulos, energías y tasas de desintegración utilizando registros de aproximadamente 650.000 millones de desintegraciones de mesones B recopilados entre 2011 y 2018. Las mediciones difieren de las expectativas del Modelo Estándar, con solo una probabilidad entre 16.000 de que una fluctuación aleatoria explique la discrepancia si la teoría es correcta.

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