Search for a scalar partner of the top quark in the jets plus missing transverse momentum final state at \(\sqrt{s}\) = 13 TeV with the ATLAS detector
Please always quote using this URN: urn:nbn:de:bvb:20-opus-172161
- A search for pair production of a scalar partner of the top quark in events with four or more jets plus missing transverse momentum is presented. An analysis of 36.1 fb\(^{−1}\) of \(\sqrt{s}\) = 13 TeV proton-proton collisions collected using the ATLAS detector at the LHC yields no significant excess over the expected Standard Model background. To interpret the results a simplified supersymmetric model is used where the top squark is assumed to decay via \(\tilde{t}_1\) → \(t^{(∗)}\)\(\tilde{χ}^0_1\) and \(\tilde{t}_1\) → \(b\tilde{χ}^±_1\) →A search for pair production of a scalar partner of the top quark in events with four or more jets plus missing transverse momentum is presented. An analysis of 36.1 fb\(^{−1}\) of \(\sqrt{s}\) = 13 TeV proton-proton collisions collected using the ATLAS detector at the LHC yields no significant excess over the expected Standard Model background. To interpret the results a simplified supersymmetric model is used where the top squark is assumed to decay via \(\tilde{t}_1\) → \(t^{(∗)}\)\(\tilde{χ}^0_1\) and \(\tilde{t}_1\) → \(b\tilde{χ}^±_1\) → \({bW}^{(∗)}\tilde{χ}^0_1\), where \(\tilde{χ}^0_1\) (\(\tilde{χ}^±_1\)) denotes the lightest neutralino (chargino). Exclusion limits are placed in terms of the top-squark and neutralino masses. Assuming a branching ratio of 100% to \(t\tilde{χ}^0_1\), top-squark masses in the range 450–1000 GeV are excluded for \(\tilde{χ}^0_1\) masses below 160 GeV. In the case where \(m_{\tilde{t}_1}\) ∼ \(m_t\) + \(m_{\tilde{χ}^0_1}\), top-squark masses in the range 235–590 GeV are excluded.…
URN: | urn:nbn:de:bvb:20-opus-172161 |
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Document Type: | Journal article |
Faculties: | Fakultät für Physik und Astronomie |
Language: | English |
Parent Title (English): | Journal of High Energy Physics |
Year of Completion: | 2017 |
Volume: | 12 |
Article Number: | 85 |
Source: | Journal of High Energy Physics (2017) 12:85. https://doi.org/10.1007/JHEP12(2017)085 |
DOI: | https://doi.org/10.1007/JHEP12(2017)085 |
Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 539 Moderne Physik |
Tag: | Hadron-Hadron scattering (experiments); high energy physics |
Release Date: | 2021/02/19 |
Creating Corporation: | The ATLAS Collaboration |
Licence (German): | CC BY: Creative-Commons-Lizenz: Namensnennung 4.0 International |