Header

UZH-Logo

Maintenance Infos

Search for direct pair production of scalar top quarks in the single- and dilepton channels in proton-proton collisions at $\sqrt{s}$ = 8 TeV


CMS Collaboration; Canelli, F; Chiochia, V; Kilminster, B; Robmann, P; et al (2016). Search for direct pair production of scalar top quarks in the single- and dilepton channels in proton-proton collisions at $\sqrt{s}$ = 8 TeV. Journal of High Energy Physics, 1607:1-44.

Abstract

Results are reported from a search for the top squark $\tilde{t}_{1}$, the lighter of the two supersymmetric partners of the top quark. The data sample corresponds to 19.7 fb$^{−1}$ of proton-proton collisions at $\sqrt{s}$ = 8 TeV collected with the CMS detector at the LHC. The search targets $\tilde{t}_{1} → b\tilde{x}^{±}_{1}$ and $\tilde{t}_{1} → t^{(*)}\tilde{x}^{0}_{1}$ decay modes, where $\tilde{x}^{±}_{1}$ and $\tilde{x}^{0}_{1}$ are the lightest chargino and neutralino, respectively. The reconstructed final state consists of jets, b jets, missing transverse energy, and either one or two leptons. Leading back- grounds are determined from data. No significant excess in data is observed above the expectation from standard model processes. The results exclude a region of the 00 two-dimensional plane of possible $\tilde{t}_{1}$ and $\tilde{x}^{0}_{1}$ masses. The highest excluded $\tilde{t}_{1}$ and $\tilde{x}^{0}_{1}$ masses are about 700 GeV and 250 GeV, respectively.

Abstract

Results are reported from a search for the top squark $\tilde{t}_{1}$, the lighter of the two supersymmetric partners of the top quark. The data sample corresponds to 19.7 fb$^{−1}$ of proton-proton collisions at $\sqrt{s}$ = 8 TeV collected with the CMS detector at the LHC. The search targets $\tilde{t}_{1} → b\tilde{x}^{±}_{1}$ and $\tilde{t}_{1} → t^{(*)}\tilde{x}^{0}_{1}$ decay modes, where $\tilde{x}^{±}_{1}$ and $\tilde{x}^{0}_{1}$ are the lightest chargino and neutralino, respectively. The reconstructed final state consists of jets, b jets, missing transverse energy, and either one or two leptons. Leading back- grounds are determined from data. No significant excess in data is observed above the expectation from standard model processes. The results exclude a region of the 00 two-dimensional plane of possible $\tilde{t}_{1}$ and $\tilde{x}^{0}_{1}$ masses. The highest excluded $\tilde{t}_{1}$ and $\tilde{x}^{0}_{1}$ masses are about 700 GeV and 250 GeV, respectively.

Statistics

Citations

Dimensions.ai Metrics

Altmetrics

Downloads

14 downloads since deposited on 10 Jan 2017
2 downloads since 12 months
Detailed statistics

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2016
Deposited On:10 Jan 2017 11:04
Last Modified:02 Feb 2018 11:17
Publisher:Springer
ISSN:1029-8479
OA Status:Gold
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1007/JHEP07(2016)027

Download

Download PDF  'Search for direct pair production of scalar top quarks in the single- and dilepton channels in proton-proton collisions at $\sqrt{s}$ = 8 TeV'.
Preview
Content: Published Version
Filetype: PDF
Size: 1MB
View at publisher
Licence: Creative Commons: Attribution 4.0 International (CC BY 4.0)