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

Altmetrics

Downloads

12 downloads since deposited on 10 Jan 2017
11 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:08 Dec 2017 21:52
Publisher:Springer
ISSN:1029-8479
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)