Constraining new resonant physics with top spin polarisation information

Physics

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https://doi.org/10.1140/epjc/s10052-017-4964-9
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Keywords

Top quark, spin polarisation, BSM, LHC

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Research output: Contribution to Journal/Magazine › Journal article › peer-review

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Constraining new resonant physics with top spin polarisation information. / Englert, Christoph; Ferrando, James Edward; Nordstrom, Karl .
In: Eur. Phys. J., Vol. C, No. 77, 17.06.2017.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Bibtex

@article{5c77c4786b5f4aa986c251ad89845abd,

title = "Constraining new resonant physics with top spin polarisation information",

abstract = "We provide a comprehensive analysis of the power of including top quark-polarisation information to kinematically challenging top pair resonance searches, for which ATLAS and CMS start losing sensitivity. Following the general modelling and analysis strategies pursued by the experiments, we analyse the semi-leptonic and the di-lepton channels and show that including polarisation information can lead to large improvements in the limit setting procedures with large data sets. This will allow us to set stronger limits for parameter choices where sensitivity from the invariant mass of the top pair is not sufficient. This highlights the importance of spin observables as part of a more comprehensive set of observables to gain sensitivity to BSM resonance searches.",

keywords = "Top quark, spin polarisation, BSM, LHC",

author = "Christoph Englert and Ferrando, {James Edward} and Karl Nordstrom",

year = "2017",

month = jun,

day = "17",

doi = "10.1140/epjc/s10052-017-4964-9",

language = "English",

volume = "C",

journal = "Eur. Phys. J.",

number = "77",

}

RIS

TY - JOUR

T1 - Constraining new resonant physics with top spin polarisation information

AU - Englert, Christoph

AU - Ferrando, James Edward

AU - Nordstrom, Karl

PY - 2017/6/17

Y1 - 2017/6/17

N2 - We provide a comprehensive analysis of the power of including top quark-polarisation information to kinematically challenging top pair resonance searches, for which ATLAS and CMS start losing sensitivity. Following the general modelling and analysis strategies pursued by the experiments, we analyse the semi-leptonic and the di-lepton channels and show that including polarisation information can lead to large improvements in the limit setting procedures with large data sets. This will allow us to set stronger limits for parameter choices where sensitivity from the invariant mass of the top pair is not sufficient. This highlights the importance of spin observables as part of a more comprehensive set of observables to gain sensitivity to BSM resonance searches.

AB - We provide a comprehensive analysis of the power of including top quark-polarisation information to kinematically challenging top pair resonance searches, for which ATLAS and CMS start losing sensitivity. Following the general modelling and analysis strategies pursued by the experiments, we analyse the semi-leptonic and the di-lepton channels and show that including polarisation information can lead to large improvements in the limit setting procedures with large data sets. This will allow us to set stronger limits for parameter choices where sensitivity from the invariant mass of the top pair is not sufficient. This highlights the importance of spin observables as part of a more comprehensive set of observables to gain sensitivity to BSM resonance searches.

KW - Top quark

KW - spin polarisation

KW - BSM

KW - LHC

U2 - 10.1140/epjc/s10052-017-4964-9

DO - 10.1140/epjc/s10052-017-4964-9

M3 - Journal article

VL - C

JO - Eur. Phys. J.

JF - Eur. Phys. J.

IS - 77

ER -

Research

Text available via DOI:

Keywords