Measurement of the D+/- production asymmetry in 7 TeV pp collisions

The asymmetry in the production cross-section @s of D^+/- mesons,A_P=@s(D^+)-@s(D^-)@s(D^+)+@s(D^-), is measured in bins of pseudorapidity @h and transverse momentum p_T within the acceptance of the LHCb detector. The result is obtained with a sample of D^+->K_S^0@p^+ decays corresponding to an integrated luminosity of 1.0 fb^-^1, collected in pp collisions at a centre of mass energy of 7 TeV at the Large Hadron Collider. When integrated over the kinematic range 2.0K_S^0@p^+ decay is negligible. No significant dependence on @h or p_T is observed.

D: hadroproduction
charge: asymmetry
D+: hadronic decay
CP: violation
p p: scattering
transverse momentum: dependence
CERN LHC Coll
rapidity dependence
LHC-B
experimental results

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Figures(5)

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