Λb0-baryon production in pp collisions in the general-mass variable-flavour-number scheme, and comparisonwith CMS and LHCb data

  • We calculate the next-to-leading-order cross section for the inclusive production of Λb baryons in m pp collisions in the general-mass variable-flavor-number scheme. We use realistic evolved non-perturbative fragmentation functions obtained from fits to m B-meson production in e+e- annihilation and compare our results for transverse-momentum and rapidity distributions with recent experimental data from the CMS and the LHCb collaborations at the CERN LHC. We find satisfactory agreement in general, with some indication for the need to modify the available fragmentation functions at larger values of the scale variable.
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G. Kramer and H. Spiesberger. Λb0-baryon production in pp collisions in the general-mass variable-flavour-number scheme, and comparisonwith CMS and LHCb data[J]. Chinese Physics C, 2018, 42(8): 083102. doi: 10.1088/1674-1137/42/8/083102
G. Kramer and H. Spiesberger. Λb0-baryon production in pp collisions in the general-mass variable-flavour-number scheme, and comparisonwith CMS and LHCb data[J]. Chinese Physics C, 2018, 42(8): 083102.  doi: 10.1088/1674-1137/42/8/083102 shu
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Received: 2018-03-29
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Λb0-baryon production in pp collisions in the general-mass variable-flavour-number scheme, and comparisonwith CMS and LHCb data

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  • 3. Centre for Theoretical and Mathematical Physics and Department of Physics, University of Cape Town, Rondebosch 7700, South Africa

Abstract: We calculate the next-to-leading-order cross section for the inclusive production of Λb baryons in m pp collisions in the general-mass variable-flavor-number scheme. We use realistic evolved non-perturbative fragmentation functions obtained from fits to m B-meson production in e+e- annihilation and compare our results for transverse-momentum and rapidity distributions with recent experimental data from the CMS and the LHCb collaborations at the CERN LHC. We find satisfactory agreement in general, with some indication for the need to modify the available fragmentation functions at larger values of the scale variable.

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