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Title: Extracting a short distance top mass with light grooming

Journal Article · · Physical Review. D.
; ; ;

We propose a kinematic method based on a factorization formula for precisely measuring the top quark mass mt in pp collisions using boosted top jets with light soft drop grooming. By using light grooming, which is an order of magnitude less aggressive than typical grooming, we retain a universal description of the top-mass scheme and decay effects, while still effectively removing soft contamination from the top jet. We give field theory results for the hadronization corrections for jets induced by a heavy top quark, showing they are described by a universal hadronic parameter that also appears for groomed light quark jets. An important phenomenological application of our results is that one can obtain mt in a short distance scheme by fitting the hadron level jet mass distributions, predicted by our factorization formula, to data or by Monte Carlo calibration. The peaked distributions for pp and e+e- collisions are similar, up to sensitivity to an underlying event which is significantly reduced by the soft drop. Since the soft drop implies that the t and t¯ jet masses each can be independently measured, the analysis enables the use of lepton+jet samples.

Research Organization:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP); Simons Foundation
Grant/Contract Number:
SC0011090; 327942
OSTI ID:
1571311
Alternate ID(s):
OSTI ID: 1635375
Journal Information:
Physical Review. D., Journal Name: Physical Review. D. Vol. 100 Journal Issue: 7; ISSN 2470-0010
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 23 works
Citation information provided by
Web of Science

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Figures / Tables (15)

FIG. 1(p. 3)figure FIG. 1
FIG. 2(p. 5)figure FIG. 2
FIG. 3(p. 6)figure FIG. 3
FIG. 4(p. 6)figure FIG. 4
FIG. 5(p. 8)figure FIG. 5
FIG. 6(p. 11)figure FIG. 6
FIG. 7(p. 12)figure FIG. 7
FIG. 8(p. 13)figure FIG. 8
FIG. 10(p. 14)figure FIG. 10
FIG. 11(p. 14)figure FIG. 11
FIG. 9(p. 14)figure FIG. 9
FIG. 12(p. 16)figure FIG. 12
FIG. 13(p. 17)figure FIG. 13
FIG. 14(p. 18)figure FIG. 14
FIG. 15(p. 20)figure FIG. 15

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Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
particle decays
particle production
quantum chromodynamics
quantum field theory
quark & gluon jets
resummation methods
strong interaction