Header

UZH-Logo

Maintenance Infos

Measurement of the weak mixing angle using the forward-backward asymmetry of Drell-Yan events in pp collisions at $\sqrt{s}=13\,\text {TeV}$


CMS Collaboration; Canelli, Maria Florencia; Kilminster, Benjamin; Aarrestad, Thea K; 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 (2018). Measurement of the weak mixing angle using the forward-backward asymmetry of Drell-Yan events in pp collisions at $\sqrt{s}=13\,\text {TeV}$. European Physical Journal B: Condensed Matter and Complex Systems, C78(9):701.

Abstract

A measurement is presented of the effective leptonic weak mixing angle $\sin ^2\theta ^{\ell }_{\text {eff}}$ using the forward–backward asymmetry of Drell–Yan lepton pairs ($μμ$ and $e e$) produced in proton–proton collisions at $\sqrt s =8TeV$ at the CMS experiment of the LHC. The data correspond to integrated luminosities of $18.8$ and $19.6fb^{−1}$ in the dimuon and dielectron channels, respectively, containing 8.2 million dimuon and 4.9 million dielectron events. With more events and new analysis techniques, including constraints obtained on the parton distribution functions from the measured forward–backward asymmetry, the statistical and systematic uncertainties are significantly reduced relative to previous CMS measurements. The extracted value of $\sin ^2\theta ^{\ell }_{\text {eff}}$from the combined dilepton data is $\sin ^2\theta ^{\ell }_{\text {eff}} =0.23101\pm 0.00036\,\text {(stat)} \pm 0.00018\,\text {(syst)} \pm 0.00016\,\text {(theo)} \pm 0.00031\,\text {(parton distributions in proton)}=0.23101 \pm 0.00053$.

Abstract

A measurement is presented of the effective leptonic weak mixing angle $\sin ^2\theta ^{\ell }_{\text {eff}}$ using the forward–backward asymmetry of Drell–Yan lepton pairs ($μμ$ and $e e$) produced in proton–proton collisions at $\sqrt s =8TeV$ at the CMS experiment of the LHC. The data correspond to integrated luminosities of $18.8$ and $19.6fb^{−1}$ in the dimuon and dielectron channels, respectively, containing 8.2 million dimuon and 4.9 million dielectron events. With more events and new analysis techniques, including constraints obtained on the parton distribution functions from the measured forward–backward asymmetry, the statistical and systematic uncertainties are significantly reduced relative to previous CMS measurements. The extracted value of $\sin ^2\theta ^{\ell }_{\text {eff}}$from the combined dilepton data is $\sin ^2\theta ^{\ell }_{\text {eff}} =0.23101\pm 0.00036\,\text {(stat)} \pm 0.00018\,\text {(syst)} \pm 0.00016\,\text {(theo)} \pm 0.00031\,\text {(parton distributions in proton)}=0.23101 \pm 0.00053$.

Statistics

Citations

Dimensions.ai Metrics
11 citations in Web of Science®
17 citations in Scopus®
Google Scholar™

Altmetrics

Downloads

10 downloads since deposited on 19 Feb 2019
9 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
Scopus Subject Areas:Physical Sciences > Engineering (miscellaneous)
Physical Sciences > Physics and Astronomy (miscellaneous)
Language:English
Date:2018
Deposited On:19 Feb 2019 10:37
Last Modified:29 Jul 2020 08:37
Publisher:Springer
ISSN:1434-6028
OA Status:Gold
Publisher DOI:https://doi.org/10.1140/epjc/s10052-018-6148-7

Download

Gold Open Access

Download PDF  'Measurement of the weak mixing angle using the forward-backward asymmetry of Drell-Yan events in pp collisions at $\sqrt{s}=13\,\text {TeV}$'.
Preview
Content: Published Version
Filetype: PDF
Size: 1MB
View at publisher
Licence: Creative Commons: Attribution 4.0 International (CC BY 4.0)