Measurement of the W-boson mass in pp collisions at √s = 7 TeV with the ATLAS detector

Rimoldi, Marco; Mullier, Geoffrey; Miucci, Antonio; Merlassino, Claudia; Haug, Sigve; Weber, Michael; Meloni, Federico; Beck, Hans Peter; Ereditato, Antonio (2018). Measurement of the W-boson mass in pp collisions at √s = 7 TeV with the ATLAS detector. European physical journal. C - particles and fields, 78(2) EDP Sciences 10.1140/epjc/s10052-017-5475-4

[img]
Preview
Text
Aaboud2018_Article_MeasurementOfTheW-bosonMassInP.pdf - Published Version
Available under License Creative Commons: Attribution (CC-BY).

Download (3MB) | Preview

A measurement of the mass of the W boson is presented based on proton–proton collision data recorded in 2011 at a centre-of-mass energy of 7 TeV with the ATLAS detector at the LHC, and corresponding to 4.6 fb⁻¹ of integrated luminosity. The selected data sample consists of 7.8×10⁶ candidates in the W → μν channel and 5.9×10⁶ candidates in the W → eν channel. The W-boson mass is obtained from template fits to the reconstructed distributions of the charged lepton transverse momentum and of the W boson transverse mass in the electron and muon decay channels, yielding
mW = 80370 ± 7 (stat.) ± 11(exp. syst.)
± 14 (mod. syst.) MeV
= 80370 ± 19MeV,
where the first uncertainty is statistical, the second corresponds to the experimental systematic uncertainty, and the third to the physics-modelling systematic uncertainty. A measurement of the mass difference between the W⁺ and W⁻
bosons yields mW+ − mW− = −29 ± 28 MeV.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP)

UniBE Contributor:

Haug, Sigve; Weber, Michael and Beck, Hans Peter

Subjects:

500 Science > 530 Physics

ISSN:

1434-6044

Publisher:

EDP Sciences

Language:

English

Submitter:

BORIS Import LHEP

Date Deposited:

28 Jun 2019 11:14

Last Modified:

04 Sep 2020 15:25

Publisher DOI:

10.1140/epjc/s10052-017-5475-4

Related URLs:

Additional Information:

Kollaboration - Es sind nur die Berner Autoren namentlich erwaehnt

BORIS DOI:

10.7892/boris.129124

URI:

https://boris.unibe.ch/id/eprint/129124

Actions (login required)

Edit item Edit item
Provide Feedback