Higgs decay into massive b-quarks at NNLO QCD in the nested soft-collinear subtraction scheme
Sign Up to like & getrecommendations! Published in 2020 at "Journal of High Energy Physics"
DOI: 10.1007/jhep01(2020)189
Abstract: We present a fully differential description of a decay of a scalar Higgs boson into massive b-quarks valid at next-to-next-to-leading order (NNLO) in perturbative quan- tum chromodynamics (QCD). We work within the nested soft-collinear subtraction… read more here.
Keywords: massive quarks; subtraction scheme; nested soft; collinear subtraction ... See more keywords
The structure of IR divergences in celestial gluon amplitudes
Sign Up to like & getrecommendations! Published in 2021 at "Journal of High Energy Physics"
DOI: 10.1007/jhep06(2021)171
Abstract: Abstract The all-loop resummation of SU(N) gauge theory amplitudes is known to factorize into an IR-divergent (soft and collinear) factor and a finite (hard) piece. The divergent factor is universal, whereas the hard function is… read more here.
Keywords: structure divergences; factor; anomalous dimension; gluon ... See more keywords
Soft-Collinear Effects in Threshold and Joint Resummation
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DOI: 10.1007/s00601-018-1417-4
Abstract: Large perturbative corrections, which appear in perturbative expressions for many QCD observables, either at small $$Q_T$$QT or at partonic threshold, can be organized by way of all order resummation. Joint resummation allows simultaneous resummation of… read more here.
Keywords: collinear effects; threshold joint; joint resummation; soft collinear ... See more keywords
Soft collinear effective theory for gravity
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DOI: 10.1103/physrevd.97.066011
Abstract: We present how to construct a Soft Collinear Effective Theory (SCET) for gravity at the leading and next-to-leading powers from the ground up. The soft graviton theorem and decoupling of collinear gravitons at the leading… read more here.
Keywords: soft collinear; theory; theory gravity; effective theory ... See more keywords
Nested Soft–Collinear Subtractions in NNLO QCD Computations
Sign Up to like & getrecommendations! Published in 2020 at "Acta Physica Polonica B"
DOI: 10.5506/aphyspolb.51.1231
Abstract: Thanks to a remarkable progress in understanding of how to perform NNLO QCD computations, many processes at hadron collisions have been recently computed to that precision. Despite these developments, the search for the optimal subtraction… read more here.
Keywords: nnlo qcd; soft collinear; scheme; qcd computations ... See more keywords