4-9 June 2012
Life Sciences Centre, UBC
Canada/Pacific timezone
<strong><font color="#cc0000">Abstract submission has closed</font></strong>

Measurement of polarisation amplitudes and triple product asymmetries in the $B_s \to \phi \phi$ decay at LHCb

4 Jun 2012, 16:00
West Atrium (Life Sciences Centre, UBC)

West Atrium

Life Sciences Centre, UBC

University of British Columbia Vancouver, BC Canada
Poster Heavy Flavour Physics 1D: Poster Session and Coffee Break


Sean Benson (University of Edinburgh (GB))


An untagged, time-integrated analysis of the $B_s \to \phi \phi$ decay has been performed with 1 fb$^{-1}$ of pp collision data at centre-of-mass energy $\sqrt{s} = 7$ TeV taken using the LHCb detector. Optimised selections have yielded 801 $B_s \to \phi \phi$ events at high signal to background ratio. This has allowed for measurements of polarisation amplitudes ($|A_0|^2$, $|A_\perp|^2$, $|A_\parallel|^2$) and strong phase difference (cos$\delta_\parallel$) to be performed. T-violating triple product asymmetries have yielded results $A_U=-0.055 \pm 0.036\mathrm{(stat.)} \pm 0.018\mathrm{(syst.)}$ and $A_V = 0.010 \pm 0.036\mathrm{(stat.)} \pm 0.018\mathrm{(syst.)}$.

<strong>Collaboration Name</strong><br /><font color="#000099">Please enter the name of<br />the collaboration or group<br />using the acronym, as in:<br /><font color="#ff0000">ABC Collaboration</font>

LHCb collaboration

<strong>E-mail Address</strong> sean.benson@cern.ch

Primary author

Sean Benson (University of Edinburgh (GB))

Presentation Materials