Abstract
Recent results of CP violation measurements in two- and quasi-two-body charmless B meson decays at LHCb are highlighted. The measurement of the CP -violating weak phase from the decay is discussed, as well as the CP -violating phase from the decay. In addition, the analysis includes the measurement of triple product asymmetries, probing for T violation. The final analysis presented measures CP violation in a time-integrated, untagged method using decays.
Highlights
The LHCb collaboration excels in studies of CP violation
Both the Bs0 → (K + π − )(K − π + ) and Bs0 → φφ decays are flavour changing neutral currents (FCNCs) dominated by gluonic penguin decays. They are sensitive to direct CP violation as well as CP violation in interference between decay and mixing. The latter gives rise to the qq CP -violating weak phase, φqq s, which is defined as φs = −2βs = ΦM − 2ΦD
The parameters used in the time-dependent angular fit are the CP -averaged fractions of amplitudes, fi, the CP -conserving strong phases, δi, the CP -violating weak phase, φsdd, and the direct CP violation is given by |λ|
Summary
The LHCb collaboration excels in studies of CP violation. The LHCb detector is a forward single-arm spectrometer with a pseudorapidity acceptance, η, between 2 and 5, optimised to the. The excellent particle identification and track reconstruction, typical flavour tagging power between 4 − 8% and decay time resolution of roughly 45 fs are properties that are related to measurements of CP violation. These measurements can display effects of physics beyond the Standard Model (SM) by uncovering inconsistencies with respect to either the theoretical predictions based on the SM or other independent measurements of the same SM quantities. The parameters used in the time-dependent angular fit are the CP -averaged fractions of amplitudes, fi , the CP -conserving strong phases, δi , the CP -violating weak phase, φsdd , and the direct CP violation is given by |λ|.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
