Header

UZH-Logo

Maintenance Infos

Measurement of the top quark mass in the all-jets final state at $\sqrt{s}=13\,\text {TeV}$ and combination with the lepton+jets channel


CMS Collaboration; Canelli, Florencia; Kilminster, Benjamin; Aarrestad, Thea; Brzhechko, Danyyl; Caminada, Lea; de Cosa, Annapaoloa; Del Burgo, Riccardo; Donato, Silvio; Galloni, Camilla; Hreus, Tomas; Leontsinis, Stefanos; Mikuni, Vinicius Massami; Neutelings, Izaak; Rauco, Giorgia; Robmann, Peter; Salerno, Daniel; Schweiger, Korbinian; Seitz, Claudia; Takahashi, Yuta; Wertz, Sebastien; Zucchetta, Alberto; et al (2019). Measurement of the top quark mass in the all-jets final state at $\sqrt{s}=13\,\text {TeV}$ and combination with the lepton+jets channel. European Physical Journal C - Particles and Fields, C79(4):313.

Abstract

A top quark mass measurement is performed using 35.9 ${\,\text {fb}^{-1}}$ of LHC proton–proton collision data collected with the CMS detector at $\sqrt{s}=13\,\text {TeV}$. The measurement uses the ${\mathrm {t}\overline{\mathrm {t}}}$ all-jets final state. A kinematic fit is performed to reconstruct the decay of the ${\mathrm {t}\overline{\mathrm {t}}}$ system and suppress the multijet background. Using the ideogram method, the top quark mass $(m_{\mathrm {t}})$ is determined, simultaneously constraining an additional jet energy scale factor $(\text {JSF})$. The resulting value of $m_{\mathrm {t}} =172.34\pm 0.20\,\text {(stat+JSF)} \pm 0.70\,\text {(syst)} \,\text {GeV}$ is in good agreement with previous measurements. In addition, a combined measurement that uses the ${\mathrm {t}\overline{\mathrm {t}}}$ lepton+jets and all-jets final states is presented, using the same mass extraction method, and provides an $m_{\mathrm {t}}$ measurement of $172.26\pm 0.07\,\text {(stat+JSF)} \pm 0.61\,\text {(syst)} \,\text {GeV}$. This is the first combined $m_{\mathrm {t}}$ extraction from the lepton+jets and all-jets channels through a single likelihood function.

Abstract

A top quark mass measurement is performed using 35.9 ${\,\text {fb}^{-1}}$ of LHC proton–proton collision data collected with the CMS detector at $\sqrt{s}=13\,\text {TeV}$. The measurement uses the ${\mathrm {t}\overline{\mathrm {t}}}$ all-jets final state. A kinematic fit is performed to reconstruct the decay of the ${\mathrm {t}\overline{\mathrm {t}}}$ system and suppress the multijet background. Using the ideogram method, the top quark mass $(m_{\mathrm {t}})$ is determined, simultaneously constraining an additional jet energy scale factor $(\text {JSF})$. The resulting value of $m_{\mathrm {t}} =172.34\pm 0.20\,\text {(stat+JSF)} \pm 0.70\,\text {(syst)} \,\text {GeV}$ is in good agreement with previous measurements. In addition, a combined measurement that uses the ${\mathrm {t}\overline{\mathrm {t}}}$ lepton+jets and all-jets final states is presented, using the same mass extraction method, and provides an $m_{\mathrm {t}}$ measurement of $172.26\pm 0.07\,\text {(stat+JSF)} \pm 0.61\,\text {(syst)} \,\text {GeV}$. This is the first combined $m_{\mathrm {t}}$ extraction from the lepton+jets and all-jets channels through a single likelihood function.

Statistics

Citations

Dimensions.ai Metrics
2 citations in Web of Science®
3 citations in Scopus®
Google Scholar™

Altmetrics

Downloads

6 downloads since deposited on 09 Jan 2020
6 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:2019
Deposited On:09 Jan 2020 10:04
Last Modified:18 Feb 2020 11:02
Publisher:Springer
ISSN:1434-6044
OA Status:Gold
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1140/epjc/s10052-019-6788-2

Download

Gold Open Access

Download PDF  'Measurement of the top quark mass in the all-jets final state at $\sqrt{s}=13\,\text {TeV}$ and combination with the lepton+jets channel'.
Preview
Content: Published Version
Filetype: PDF
Size: 846kB
View at publisher
Licence: Creative Commons: Attribution 4.0 International (CC BY 4.0)