Measuring the Bs mixing phase at LHCb

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• Greig Cowan (University of Edinburgh)
• Tuesday 18 November 2014, 15:00-16:00
• Rutherford Seminar Room B.

If you have a question about this talk, please contact Nick Barlow.

The flavour-tagged, time-dependent angular analysis of the Bs → Jpsi KK channel is a benchmark measurement in the quark-flavour sector as it gives access to several fundamental parameters that describe the Bs meson system. The most important of these observables is the CP-violating phase, phi_s, since it is both precisely predicted in the Standard Model and is sensitive to new degrees of freedom that can modify Bs mixing. I will present the latest results from the LHCb experiment on the measurement of phi_s using Bs-> Jpsi KK, Bs → Jpsi pipi and Bs → DsDs decays. Additionally, a new measurement that limits the size of possible penguin contributions, which are assumed to be zero in SM predictions, will be discussed.

This talk is part of the Cavendish HEP Seminars series.

This talk is included in these lists:

• All Cavendish Laboratory Seminars
• All Talks (aka the CURE list)
• Cavendish HEP Seminars
• Centre for Health Leadership and Enterprise
• Featured lists
• ME Seminar
• Neurons, Fake News, DNA and your iPhone: The Mathematics of Information
• Rutherford Seminar Room B
• School of Physical Sciences
• Thin Film Magnetic Talks
• few29

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