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Title: Recursive Soft Drop

Journal Article · · Journal of High Energy Physics (Online)
ORCiD logo [1]; ORCiD logo [2];  [3]; ORCiD logo [1]
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Center for Theoretical Physics
  2. California Inst. of Technology (CalTech), Pasadena, CA (United States). Walter Burke Inst. for Theoretical Physics
  3. Commissariat a l'Energie Atomique et aux Energies Alternatives (CEA), Saclay (France). Institut de Physique Théorique

We introduce a new jet substructure technique called Recursive Soft Drop, which generalizes the Soft Drop algorithm to have multiple grooming layers. Like the original Soft Drop method, this new recursive variant traverses a jet clustering tree to remove soft wide-angle contamination. By enforcing the Soft Drop condition N times, Recursive Soft Drop improves the jet mass resolution for boosted hadronic objects like W bosons, top quarks, and Higgs bosons. We further show that this improvement in mass resolution persists when including the effects of pileup, up to large pileup multiplicities. In the limit that N goes to infinity, the resulting groomed jets formally have zero catchment area. As an alternative approach, we present a bottom-up version of Recursive Soft Drop which, in its local form, is similar to Recursive Soft Drop and which, in its global form, can be used to perform event-wide grooming.

Research Organization:
California Institute of Technology (CalTech), Pasadena, CA (United States); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
SC0011632; SC0012567
OSTI ID:
1499467
Journal Information:
Journal of High Energy Physics (Online), Vol. 2018, Issue 6; ISSN 1029-8479
Publisher:
Springer BerlinCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 32 works
Citation information provided by
Web of Science

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Cited By (16)

Pileup and underlying event mitigation with iterative constituent subtraction journal August 2019
Jet Grooming through Reinforcement Learning journal April 2020
Pileup and Underlying Event Mitigation with Iterative Constituent Subtraction text January 2019
The Lund jet plane journal December 2018
Photon isolation and jet substructure journal September 2018
Dynamical grooming of QCD jets journal February 2020
Lund jet images from generative and cycle-consistent adversarial networks text January 2019
Dynamical grooming of QCD jets text January 2019
Prospects for a measurement of the W boson mass in the all-jets final state at hadron colliders journal February 2019
Jet grooming through reinforcement learning text January 2019
Jet grooming through reinforcement learning journal July 2019
Detecting a boosted diboson resonance journal November 2018
Detecting a Boosted Diboson Resonance text January 2018
Jet Grooming through Reinforcement Learning journal April 2020
Lund jet images from generative and cycle-consistent adversarial networks journal November 2019
Aspects of track-assisted mass journal March 2019

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