# IOP 2014 Joint HEPP & APP Group Meeting

Apr 7 – 9, 2014
Royal Holloway, University of London
Europe/London timezone
Institute of Physics 2014 Joint High Energy Particle Physics and Astro Particle Physics Groups Annual Meeting

## CP asymmetries in $B\rightarrow K^{(\star)}\mu\mu$ decays

Apr 8, 2014, 2:00 PM
15m
Room B (Windsor Building)

### Room B

#### Windsor Building

contributed talk Flavour Physics and Beyond

### Speaker

Simon Robert Magee Wright (University of Cambridge (GB))

### Description

Measurements of the direct $CP$ asymmetry, $A_{CP}$, and the $CP$ difference in the $\mu^+ \mu^-$ forward-backward asymmetry, $\Delta A_{FB}$, are made for the $B^{0} \rightarrow K^{\star{0}}\mu^+\mu^-$ and $B^+ \rightarrow K^+\mu^+\mu^-$ decay modes using $pp$ collision data corresponding to an integrated luminosity of 3$fb^{-1}$ collected by LHCb in 2011 and 2012. The respective control modes $B^0 \rightarrow J/\psi K^{\star{0}}$ and $B^+ \rightarrow J/\psi K^+$ are used to account for detection and production asymmetries. The measurements are made in several bins of $\mu^+ \mu^-$ invariant mass squared, $q^2$, vetoing the $\phi$ and charmonium resonance regions.

### Primary author

Simon Robert Magee Wright (University of Cambridge (GB))

 Slides