Updated limit for the decay

10th International Conference on Kaon Physics

Ramos Pernas, Miguel^1

University of Santiago de Compostela, Physics Faculty, Santiago de Compostela

15782, Spain^1

关键词: CP violations;    Data sample;    Integrated luminosity;    Large Hadron Collider;    New sources;    Pp collisions;    The standard model;    Upper limits;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/800/1/012009/pdf
DOI  :  10.1088/1742-6596/800/1/012009

来源: IOP

【 摘 要 】

A search for the decay K0S→ μ+μ-is performed using the data sample of pp collisions at √ s = 8 TeV collected by the LHCb experiment at the Large Hadron Collider in 2012, corresponding to an integrated luminosity of 2.0 fb-1. In the Standard Model, this decay is expected to be suppressed at a level below the current experimental sensitivity, but could be enhanced by new sources of CP violation. The observed number of candidates is compatible with the expected background and allows to set an upper limit B(K0S→ μ+μ-) -9at 95 (90)% con-dence level. This limit improves the result published by LHCb using 1.0 fb-1of collisions collected in 2011 at √ s = 7 TeV.