English

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

High Energy Physics - Phenomenology 2020-07-01 v1

Abstract

We study inclusive Λc±\Lambda_c^{\pm}-baryon production in pppp 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 cΛc+c \to \Lambda_c^+ fragmentation function combining e+ee^+e^- 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 Λc±\Lambda_c^{\pm} production cross sections from the LHC experimental collaborations is not resolved. The ratio of data for Λc+\Lambda_c^+-baryon and D0D^0-meson production seems to violate the universality of cc-charm quark to cc-hadron fragmentation.

Keywords

Cite

@article{arxiv.2004.04213,
  title  = {$\Lambda_c^{\pm}$ production in pp collisions with a new fragmentation function},
  author = {B. A. Kniehl and G. Kramer and I. Schienbein and H. Spiesberger},
  journal= {arXiv preprint arXiv:2004.04213},
  year   = {2020}
}

Comments

21 pages

R2 v1 2026-06-23T14:44:46.950Z