• Open Access

Thrust distribution in electron-positron annihilation using the principle of maximum conformality

Sheng-Quan Wang, Stanley J. Brodsky, Xing-Gang Wu, and Leonardo Di Giustino
Phys. Rev. D 99, 114020 – Published 24 June 2019

Abstract

We present a comprehensive and self-consistent analysis for the thrust distribution by using the principle of maximum conformality (PMC). By absorbing all nonconformal terms into the running coupling using PMC via renormalization group equation, the scale in the running coupling shows the correct physical behavior and the correct number of active flavors is determined. The resulting PMC predictions agree with the precise measurements for both the thrust differential distributions and the thrust mean values. Moreover, we provide a new remarkable way to determine the running of the coupling constant αs(Q2) from the measurement of the jet distributions in electron-positron annihilation at a single given value of the center-of-mass energy s.

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  • Received 11 February 2019

DOI:https://doi.org/10.1103/PhysRevD.99.114020

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Particles & Fields

Authors & Affiliations

Sheng-Quan Wang1,2,*, Stanley J. Brodsky2,†, Xing-Gang Wu3,‡, and Leonardo Di Giustino2,4,§

  • 1Department of Physics, Guizhou Minzu University, Guiyang 550025, People’s Republic of China
  • 2SLAC National Accelerator Laboratory, Stanford University, Stanford, California 94039, USA
  • 3Department of Physics, Chongqing University, Chongqing 401331, People’s Republic of China
  • 4Department of Science and High Technology, University of Insubria, via valleggio 11, I-22100, Como, Italy

  • *sqwang@cqu.edu.cn
  • sjbth@slac.stanford.edu
  • wuxg@cqu.edu.cn
  • §leonardo.digiustino@gmail.com

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Vol. 99, Iss. 11 — 1 June 2019

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