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Article Dans Une Revue Physical Review D Année : 2020

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

B.A. Kniehl
  • Fonction : Auteur
G. Kramer
  • Fonction : Auteur
H. Spiesberger
  • Fonction : Auteur

Résumé

We study inclusive Λc±-baryon production in pp 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 c→Λc+ fragmentation function combining e+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± production cross sections from the LHC experimental collaborations is not resolved. The ratio of data for Λc+-baryon and D0-meson production seems to violate the universality of c-quark to c-hadron fragmentation.

Dates et versions

hal-02557741 , version 1 (28-04-2020)

Identifiants

Citer

B.A. Kniehl, G. Kramer, I. Schienbein, H. Spiesberger. $\Lambda_c^{\pm}$ production in $pp$ collisions with a new fragmentation function. Physical Review D, 2020, 101 (11), pp.114021. ⟨10.1103/PhysRevD.101.114021⟩. ⟨hal-02557741⟩
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