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Effects of TMD evolution and partonic flavor on e + e − annihilation into hadrons

  • Regular Article - Theoretical Physics
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  • Published: 12 November 2015
  • Volume 2015, article number 76, (2015)
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Effects of TMD evolution and partonic flavor on e + e − annihilation into hadrons
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  • Alessandro Bacchetta1,2,
  • Miguel G. Echevarria3,4,
  • Piet J. G. Mulders3,4,
  • Marco Radici1 &
  • …
  • Andrea Signori3,4 

  • 481 Accesses

  • 31 Citations

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A preprint version of the article is available at arXiv.

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.

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This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.

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Authors and Affiliations

  1. INFN Sezione di Pavia, via Bassi 6, I-27100, Pavia, Italy

    Alessandro Bacchetta & Marco Radici

  2. Dipartimento di Fisica, Universita di Pavia, via Bassi 6, I-27100, Pavia, Italy

    Alessandro Bacchetta

  3. Department of Physics and Astronomy, VU University Amsterdam, De Boelelaan 1081, NL-1081 HV, Amsterdam, The Netherlands

    Miguel G. Echevarria, Piet J. G. Mulders & Andrea Signori

  4. Nikhef, Science Park 105, NL-1098 XG, Amsterdam, The Netherlands

    Miguel G. Echevarria, Piet J. G. Mulders & Andrea Signori

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  1. Alessandro Bacchetta
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  2. Miguel G. Echevarria
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  3. Piet J. G. Mulders
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  4. Marco Radici
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Correspondence to Marco Radici.

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ArXiv ePrint: 1508.00402

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Bacchetta, A., Echevarria, M.G., Mulders, P.J.G. et al. Effects of TMD evolution and partonic flavor on e + e − annihilation into hadrons. J. High Energ. Phys. 2015, 76 (2015). https://doi.org/10.1007/JHEP11(2015)076

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  • Received: 12 August 2015

  • Accepted: 16 October 2015

  • Published: 12 November 2015

  • DOI: https://doi.org/10.1007/JHEP11(2015)076

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Keywords

  • QCD Phenomenology
  • Deep Inelastic Scattering (Phenomenology)
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