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Title: N -jettiness subtractions for g g H at subleading power

Journal Article · · Physical Review D

N -jettiness subtractions provide a general approach for performing fully-differential next-to-next-to-leading order (NNLO) calculations. Since they are based on the physical resolution variable N -jettiness, TN, subleading power corrections in τ =TN/Q, with Q a hard interaction scale, can also be systematically computed. We study the structure of power corrections for 0-jettiness, T0, for the gg → H process. Using the soft-collinear effective theory we analytically compute the leading power corrections αsτlnτ and α$$2\atop{s}$$τln3τ (finding partial agreement with a previous result in the literature), and perform a detailed numerical study of the power corrections in the gg, gq, and $$q\overline{q}$$ channels. This includes a numerical extraction of the αsτ and α$$2\atop{s}$$sτln2τ corrections, and a study of the dependence on the T0 definition. Including such power suppressed logarithms significantly reduces the size of missing power corrections, and hence improves the numerical efficiency of the subtraction method. Having a more detailed understanding of the power corrections for both $$q\overline{q}$$ and gg initiated processes also provides insight into their universality, and hence their behavior in more complicated processes where they have not yet been analytically calculated.

Research Organization:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
SC0011090; AC02-05CH11231
OSTI ID:
1417927
Alternate ID(s):
OSTI ID: 1485073
Journal Information:
Physical Review D, Journal Name: Physical Review D Vol. 97 Journal Issue: 1; ISSN 2470-0010
Publisher:
American Physical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 49 works
Citation information provided by
Web of Science

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Cited By (4)

N-jettiness subtractions for g g → H at subleading power text January 2018
Analytic results for color-singlet production at NNLO QCD with the nested soft-collinear subtraction scheme journal May 2019
Higher-order power corrections in a transverse-momentum cut for colour-singlet production at NLO journal October 2019
Analytic results for decays of color singlets to gg and $$q \bar{q}$$qq¯ final states at NNLO QCD with the nested soft-collinear subtraction scheme journal December 2019

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