Department of Physics

Indian Institute Of Technology Madras , Chennai

Measurement of the CKM angle γ from a combination of LHCb results - Experimental High Energy Physics

Speaker : Resmi P.K

2017-09-14

Abstract :

A combination of measurements sensitive to the CKM angle γ from the LHCb Collaboration is presented. The inputs are from analyses of time-integrated B+ → DK+ , B0 → DK∗0 , B0 → DK+ π− and B+ → DK + π + π − tree-level decays. In addition, results from a time-dependent analysis of Bs0 → Ds ∓ K ± decays are included. The combination yields γ = (72.2 +6.8 −7.3 ) , where the uncertainty includes systematic effects. The 95.5% confidence level interval is determined to be γ ∈ [55.9, 85.2] . An updated measurement and its combination with the old result using a frequentist approach is also presented. This results in the most precise measurement of γ to date.

Reference:
1) R. Aaij et.al (LHCb Collaboration), JHEP 1612 (2016) 087 2) LHCb Collaboration, LHCb-CONF-2017-004, 2017 European Physical Society Conference on High Energy Physics

Key Speaker Resmi P.K
Guests None
Place Seminar Room
Start Time 4:00 PM
Finish Time 5:00 PM
External Link None