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Title: First subleading power resummation for event shapes

Journal Article · · Journal of High Energy Physics (Online)
 [1];  [2]; ORCiD logo [2];  [3]
  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. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Center for Theoretical Physics
  3. Zhejiang University, Hangzhou (China). Department of Physics

We derive and analytically solve renormalization group (RG) equations of gauge invariant non-local Wilson line operators which resum logarithms for event shape observables τ at subleading power in the τ « 1 expansion. These equations involve a class of universal jet and soft functions arising through operator mixing, which we call θ-jet and θ-soft functions. An illustrative example involving these operators is introduced which captures the generic features of subleading power resummation, allowing us to derive the structure of the RG to all orders in αs, and provide field theory definitions of all ingredients. As a simple application, we use this to obtain an analytic leading logarithmic result for the subleading power resummed thrust spectrum for H → gg in pure glue QCD. This resummation determines the nature of the double logarithmic series at subleading power, which we find is still governed by the cusp anomalous dimension. We check our result by performing an analytic calculation up to O(α$$3\atop{s}$$). Consistency of the subleading power RG relates subleading power anomalous dimensions, constrains the form of the θ-soft and θ-jet functions, and implies an exponentiation of higher order loop corrections in the subleading power collinear limit. Our results provide a path for carrying out systematic resummation at subleading power for collider observables.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP); USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
AC02-05CH11231; SC0011090
OSTI ID:
1480821
Alternate ID(s):
OSTI ID: 1635386
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: 55 works
Citation information provided by
Web of Science

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Violation of the Kluberg-Stern-Zuber theorem in SCET journal September 2019
On next-to-leading power threshold corrections in Drell-Yan production at N3LO journal October 2018
Anomalous dimension of subleading-power N-jet operators. Part II journal November 2018
Subleading power factorization with radiative functions journal November 2019
Power corrections for N-jettiness subtractions at O α s $$ \mathcal{O}\left({\alpha}_s\right) $$ journal December 2018
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Impact of isolation and fiducial cuts on qT and N-jettiness subtractions text January 2020
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Subleading Power Rapidity Divergences and Power Corrections for $q_T$ text January 2018
Impact of Isolation and Fiducial Cuts on $q_T$ and N-Jettiness Subtractions text January 2019
High-energy limit of mass-suppressed amplitudes in gauge theories text January 2018
Diagrammatic resummation of leading-logarithmic threshold effects at next-to-leading power text January 2019
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