Precise measurement of the top-quark mass at the CMS experiment using the ideogram method Article Swipe
The mass of the top quark is measured using a sample of ttbar candidate events with one electron or muon and at least four jets in the final state, collected by CMS in proton-proton collisions at sqrt{s}=8 TeV at the LHC. The candidate events are selected from data corresponding to an integrated luminosity of 19.7 fb^-1. For each event the top-quark mass is reconstructed from a kinematic fit of the decay products to a ttbar hypothesis. In order to minimize the uncertainties from jet energy corrections, the top-quark mass is determined simultaneously with a jet energy scale factor (JSF), constrained by the known mass of the W boson decaying to quark-antiquark pairs. A joint likelihood fit taking into account multiple interpretations per event -- the ideogram method -- is used. From the simultaneous fit, a top-quark mass of 172.15 +/- 0.19 (stat.+JSF) +/- 0.61 (syst.) GeV is obtained. Using an additional constraint from the determination of the jet energy scale in photon/Z+jet events yields m_t = 172.38 +/- 0.16 (stat.+JSF) +/- 0.49 (syst.) GeV. The results are discussed in the context of different event generator implementations. Possible kinematic biases are studied by performing the measurement in different regions of the phase space.
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Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.3204/desy-thesis-2015-034
- OA Status
- green
- Cited By
- 2
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- 20
- OpenAlex ID
- https://openalex.org/W2220986751
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W2220986751Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.3204/desy-thesis-2015-034Digital Object Identifier
- Title
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Precise measurement of the top-quark mass at the CMS experiment using the ideogram methodWork title
- Type
-
articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2016Year of publication
- Publication date
-
2016-12-07Full publication date if available
- Authors
-
M. SeidelList of authors in order
- Landing page
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https://doi.org/10.3204/desy-thesis-2015-034Publisher landing page
- Open access
-
YesWhether a free full text is available
- OA status
-
greenOpen access status per OpenAlex
- OA URL
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https://doi.org/10.3204/desy-thesis-2015-034Direct OA link when available
- Concepts
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Physics, Top quark, Particle physics, Astronomy, Computer science, Geodesy, Quark, GeologyTop concepts (fields/topics) attached by OpenAlex
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2Total citation count in OpenAlex
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2016: 2Per-year citation counts (last 5 years)
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20Other works algorithmically related by OpenAlex
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