Abstract
Measurements of inclusive differential cross sections for charged pion and kaon production in annihilation have been carried out at a center-of-mass energy of . The measurements were performed with the Belle detector at the KEKB collider using a data sample containing events, where . We present charge-integrated differential cross sections for as a function of the relative hadron energy from 0.2 to 0.98. The combined statistical and systematic uncertainties for () are 4% (4%) at and 15% (24%) at . The cross sections are the first measurements of the dependence of pion and kaon production for as well as the first precision cross section measurements at a center-of-mass energy far below the resonance used by the experiments at LEP and SLC.
- Received 25 January 2013
DOI:https://doi.org/10.1103/PhysRevLett.111.062002
© 2013 American Physical Society