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Everett et al. JHEP01 (2002) 022, Foster et al. PRB641 (2006) 452, Lunghi et al. JHEP 04 (2007) 058, Goto et al. PRD77 (2008) 095010

Blake et al. arXiv:1501.03309

arXiv:1501.03038

LHCb: JHEP05 (2013) 159

angle definitions as in LHCb JHEP 08 (2013) 131

angular fit region

124 signal events

Becirevic et al. NPB854 (2012) 321

accurate at 5% level

Kruger et al. PRD71 (2005) 094009Becirevic et al. NPB854 (2012) 321

Adapted from Jäger and Camalich arXiv:1412.3183

BaBar PRD78 (2008) 071102, Belle PRD74 (2006) 111104

No deviations from SM:

Becirevic et al. JHEP 08 (2012) 090

TrackingVELO PID Calorimeters Muon

Martino Borsato martino.borsato@cern.ch

photon polarization

M. Borsato on behalf of the LHCb collaboration

very precise predictions

photon polarization

previous constraints

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