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Search for direct CP violation in D 0 → h − h + modes using semileptonic B decays

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Original SWORD entry document
Date Issued
2013
Journal
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Publisher
Elsevier BV
Citation
Aaij, R., et al. "Search for Direct Cp Violation in D-0 -> H(-)H(+) Modes Using Semileptonic B Decays." Physics Letters B 723 1-3 (2013): 33-43.
Version
Final published version
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. © 2013 CERN.
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DOI of Published Version
10.1016/J.PHYSLETB.2013.04.061
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