Better Higgs boson measurements through information geometry - INSPIRE

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Better Higgs boson measurements through information geometry

Johann Brehmer
(
- U. Heidelberg, ITP
)
,
Kyle Cranmer
(
- New York U., CCPP and
- New York U.
)
,
Felix Kling
(
- UC, Irvine
)
,
Tilman Plehn
(
- U. Heidelberg, ITP
)

Dec 15, 2016

18 pages

Published in:

Phys.Rev.D 95 (2017) 7, 073002

Published: Apr 5, 2017

e-Print:

1612.05261 [hep-ph]

DOI:

10.1103/PhysRevD.95.073002

View in:

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Abstract: (APS)

Information geometry can be used to understand and optimize Higgs boson measurements at the LHC. The Fisher information encodes the maximum sensitivity of observables to model parameters for a given experiment. Applied to higher-dimensional operators, it defines the new physics reach of any LHC signature. We calculate the Fisher information for Higgs production in weak boson fusion with decays into tau pairs and four leptons and for Higgs production in association with a single top quark. In a next step, we analyze how the differential information is distributed over phase space, which defines optimal event selections. Conversely, we consider the information in the distribution of a subset of the kinematic variables, showing which production and decay observables are the most powerful and how much information is lost in traditional histogram-based analysis methods compared to fully multivariate ones.

Note:

v2: expanded discussion of information in WBF distributions, references added; v3: corrected typos, matches published version

effective field theory
electroweak interaction
operator: higher-dimensional
CERN LHC Coll
p p: scattering
vector boson: fusion
Higgs particle: production
Higgs particle: leptonic decay
top: associated production
top: single production

References(72)

Figures(36)

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