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Λc± production in pp collisions with a new fragmentation function

B. A. Kniehl, G. Kramer, I. Schienbein, H. Spiesberger
2020 Physical Review D  

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We study inclusive Λ AE c -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 → Λ þ c fragmentation function combining e þ 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 Λ AE c production cross sections from the LHC
more » ... rimental collaborations is not resolved. The ratio of data for Λ þ c -baryon and D 0 -meson production seems to violate the universality of c-quark to c-hadron fragmentation.
doi:10.1103/physrevd.101.114021 fatcat:v6iii2b56vcvxh6rrvv6odccei
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B. A. Kniehl, G. Kramer, I. Schienbein, H. Spiesberger. "Λc± production in pp collisions with a new fragmentation function." Physical Review D 101.11 (2020)