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Title: Simplicity from recoil: the three-loop soft function and factorization for the energy-energy correlation

Journal Article · · Journal of High Energy Physics (Online)
 [1];  [2]
  1. Univ. of California, Berkeley, CA (United States). Berkeley Center for Theoretical Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Theoretical Physics Group
  2. Zhejiang Univ., Hangzhou (China). Zhejiang Institute of Modern Physics, Department of Physics

We derive an operator based factorization theorem for the energy-energy correlation (EEC) observable in the back-to-back region, allowing the cross section to be written as a convolution of hard, jet and soft functions. We prove the equivalence of the soft functions for the EEC and color singlet transverse-momentum resummation to all-loop order, and give their analytic result to three-loops. Large logarithms appearing in the perturbative expansion of the EEC can be resummed to all orders using renormalization group evolution. We give analytic results for all required anomalous dimensions to three-loop order, providing the first example of a transverse-momentum (recoil) sensitive e+e- event shape whose anomalous dimensions are known at this order. The EEC can now be computed to next-to-next-to-next-to-leading logarithm matched to next-to-next-to-leading order, making it a prime candidate for precision QCD studies and extractions of the strong coupling constant. Lastly, we anticipate that our factorization theorem will also be crucial for understanding non-perturbative power corrections for the EEC, and their relationship to those appearing in other observables.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1480820
Journal Information:
Journal of High Energy Physics (Online), Vol. 2018, Issue 8; ISSN 1029-8479
Publisher:
Springer BerlinCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 45 works
Citation information provided by
Web of Science

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Cited By (10)

Transverse parton distribution and fragmentation functions at NNLO: the gluon case journal January 2020
Subleading Power Rapidity Divergences and Power Corrections for $q_T$ text January 2019
Generic dijet soft functions at two-loop order: correlated emissions text January 2018
New insights on an old problem: resummation of the D-parameter journal February 2019
Transverse parton distribution and fragmentation functions at NNLO: the quark case journal October 2019
Subleading power rapidity divergences and power corrections for qT journal April 2019
Generic dijet soft functions at two-loop order: correlated emissions text January 2019
Subleading Power Rapidity Divergences and Power Corrections for $q_T$ text January 2018
Generic dijet soft functions at two-loop order: correlated emissions text January 2019
New Insights on an Old Problem: Resummation of the D-parameter text January 2018

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