LHC Seminar

# Evidence of CP violation in B -> hhh charmless decays

## by Alvaro Gomes Dos Santos Neto (Univ. Federal do Rio de Janeiro (BR))

Tuesday, 2 October 2012 from to (Europe/Zurich)
at CERN ( 500-1-001 - Main Auditorium )
 Description We present the first evidence of CP violation in the B+→ pi+pi-pi+,  B+→ K+pi+pi-, B+→ K+K-pi+ and B+→K+K-K+ decays using the 1.0 fb-1 of data collected by the LHCb experiment during 2011. The results show that the 3pi and Kpipi channels present a positive asymmetry while the KKpi and KKK modes present a negative asymmetry. We also study the variation of the CP violation effects in the phase space of each three-body decay.  We find significant inhomogeneities that reveal regions with particularly large asymmetries in the pipi and KK low mass regions in B+→pi+pi-pi+ and B+→K+K-pi+ respectively. Webcast Please note that this event will be available live via the Webcast Service. Material: Organised by M. Mangano, C. Lourenco, G. Unal......................... **Tea and Coffee will be served at 10h30**