Measurements of Charm Fragmentation into D ∗ + s and D + s in e + e − Annihilations at √ s = 10 . 5 GeV
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چکیده
A study of charm fragmentation into D∗+ s and D + s in e +e− annihilations at √ s = 10.5 GeV is presented. This study using 4.72±0.05 fb−1 of CLEO II data reports measurements of the cross-sections σ(D∗+ s ) and σ(D + s ) in momentum regions above x = 0.44, where x is theDs momentum divided by the maximum kinematically allowed Ds momentum. The Ds vector to vector plus pseudoscalar production ratio is measured to be PV (x(D + s ) > 0.44) = 0.44± 0.04.
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تاریخ انتشار 2008