$Λ_c^{\pm}$ production in pp collisions with a new fragmentation function

B. A. Kniehl; G. Kramer; I. Schienbein; H. Spiesberger

Paper

$Λ_c^{\pm}$ production in pp collisions with a new fragmentation function

Abstract

We study inclusive

-baryon production in

collisions in the general-mass variable-flavor number scheme and compare with data from the LHCb, ALICE and CMS collaborations. We perform a new fit of the

fragmentation function combining

data from OPAL and Belle. The agreement with LHC data is slightly worse compared with a calculation using an older fragmentation function, and the tension between different determinations of

production cross sections from the LHC experimental collaborations is not resolved. The ratio of data for

-baryon and

-meson production seems to violate the universality of

-charm quark to

-hadron fragmentation.