5,266 research outputs found

    The measurement of sin(2beta)

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    Since the first observation in 1964, CP violation remains one of the most elusive aspects of the standard model. The CDF collaboration has reported the first evidence of CP violation in the B system using the world's largest sample of BJ/ψKS0B \to J/\psi K^0_S decays. The direct measurement of sin(2β)(2\beta)=0.790.44+0.41^{+0.41}_{-0.44} (combined statistical and systematic error) agrees with the standard model predictions. New data collected from the B-factories and from the upgraded experiments at the Tevatron should allow a more precise measurement of sin2β\sin 2\beta in the near future.Comment: Presented at Heavy Flavours 8, Southampton, UK, 1999. Ten pages, 4 figure

    The Importance of Silicon Detectors for the Higgs Boson Discovery and the Study of its Properties

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    Recent studies are presented demonstrating the important role played by silicon detectors in the the discovery of the Higgs boson. CMS is planning to replace its in an extended technical stop of the LHC in the winter of 2016 . We present results showing that this replacement will significant increase the sample of Higgs bosons that will be reconstructed enabling precision studies of this particle.Comment: on behalf of the CMS Collaboratio