Search for direct CP violation in D0→h-h+ modes using semileptonic B decays

The LHCb Collaboration

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Abstract

A search for direct CP violation in D0 →h-h+ (where h = K or π) is presented using data corresponding to an integrated luminosity of 1.0fb-1 collected in 2011 by LHCb in pp collisions at a centre-of-mass energy of 7 TeV. The analysis uses D0 mesons produced in inclusive semileptonic b-hadron decays to the D0μX nal state, where the charge of the accompanying muon is used to tag the avour of the D0 meson. The difference in the CP-violating asymmetries between the two decay channels is measured to be ΔACP = ACP(K-K+) - ACP ( π-π+) = ( 0.49 ±0.30 (stat)± 0.14 (syst))%. This result does not conrm the evidence for direct CP violationinthecharmsectorreportedinother analyses.

Original languageEnglish
Pages (from-to)33-43
Number of pages11
JournalPhysics Letters B
Volume723
Issue number1-3
DOIs
Publication statusPublished - 10 Jun 2013
Externally publishedYes

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