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Article overview
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Effects of TMD evolution and partonic flavor on $e^+e^-$ annihilation into hadrons | | Alessandro Bacchetta
; Miguel G. Echevarria
; Piet J.G. Mulders
; Marco Radici
; Andrea Signori
; | | Date: |
3 Aug 2015 | | Abstract: | We calculate the transverse momentum dependence in the production of two
back-to-back hadrons in electron-positron annihilations at the medium/large
energy scales of BES-III and BELLE experiments. We use the parameters of the
transverse-momentum-dependent (TMD) fragmentation functions that were recently
extracted from the semi-inclusive deep-inelastic-scattering multiplicities at
low energy from HERMES. TMD evolution is applied according to different
approaches and using different parameters for the nonperturbative part of the
evolution kernel, thus exploring the sensitivity of our results to these
different choices and to the flavor dependence of parton fragmentation
functions. We discuss how experimental measurements could discriminate among
the various scenarios. | | Source: | arXiv, 1508.0402 | | Services: | Forum | Review | PDF | Favorites | |
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