Abstract
In pp collisions at the LHC the LHCb experiment has collected the world's largest sample of charmed hadrons. Using data of an integrated luminosity of 1.0 fb−1 recorded in 2011 a measurement of direct and indirect CP violation in the charm sector and of D0 mixing parameters was performed. Results from several decay modes are presented with complementary time-dependent and time-integrated analyses.
Highlights
Background data dataFit (χ2/ndof = 1.27) Background data +20000 1600×0103 ⇤+Fit (χ2/ndof = 1.24) Background dataFit (χ2/ndof = 1.40) Background dataK K : 2.24 million events 000 D0→KK D0→ππThe raw 2000 asymmetry for tagged decays to a final 420000 state f is given by
Measured raw asymmetry ARAW may be written as a sum of components that are physics and detector effects: ARAW (f )⇤ = ACP (f ) + AD(f ) + AD(⇡s) + AP (D⇤)
In any given kinematic region AD(πs) and AP(D*) are independent of f and in the first-order those terms cancel if we subtract raw asymmetries
Summary
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