ℤℤ → ℓ⁺ℓ⁻ℓ'⁺ℓ'⁻ cross-section measurements and search for anomalous triple gauge couplings in 13 TeV pp collisions with the ATLAS detector

Rimoldi, Marco; Mullier, Geoffrey; Miucci, Antonio; Merlassino, Claudia; Haug, Sigve; Weber, Michael; Meloni, Federico; Beck, Hans Peter; Ereditato, Antonio (2018). ℤℤ → ℓ⁺ℓ⁻ℓ'⁺ℓ'⁻ cross-section measurements and search for anomalous triple gauge couplings in 13 TeV pp collisions with the ATLAS detector. Physical review. D - particles, fields, gravitation, and cosmology, 97(3) American Physical Society 10.1103/PhysRevD.97.032005

[img]
Preview
Text
PhysRevD.97.032005.pdf - Published Version
Available under License Creative Commons: Attribution (CC-BY).

Download (1MB) | Preview

Measurements of ZZ production in the ℓ⁺ℓ⁻ℓ'⁺ℓ'⁻ channel in proton–proton collisions at 13 TeV center-of-mass energy at the Large Hadron Collider are presented. The data correspond to 36.1 fb⁻¹ of collisions collected by the ATLAS experiment in 2015 and 2016. Here ℓ and ℓ' stand for electrons or muons. Integrated and differential ZZ → ℓ⁺ℓ⁻ℓ'⁺ℓ'⁻ cross sections with Z → ℓ⁺ℓ⁻ candidate masses in the range of 66 GeV to 116 GeV are measured in a fiducial phase space corresponding to the detector acceptance and corrected for detector effects. The differential cross sections are presented in bins of twenty observables, including several that describe the jet activity. The integrated cross section is also extrapolated to a total phase space and to all standard model decays of Z bosons with mass between 66 GeV and 116 GeV, resulting in a value of 17.3 ± 0.9 [±0.6 (stat)± 0.5 (syst) ± 0.6 (lumi)] pb. The measurements are found to be in good agreement with the standard model. A search for neutral triple gauge couplings is performed using the transverse momentum distribution of the leading Z boson candidate. No evidence for such couplings is found and exclusion limits are set on their parameters.

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:

1550-7998

Publisher:

American Physical Society

Language:

English

Submitter:

BORIS Import LHEP

Date Deposited:

27 Jun 2019 14:57

Last Modified:

23 Oct 2019 22:57

Publisher DOI:

10.1103/PhysRevD.97.032005

Additional Information:

Kollaboration - Es sind nur die Berner Autoren namentlich erwaehnt

BORIS DOI:

10.7892/boris.129108

URI:

https://boris.unibe.ch/id/eprint/129108

Actions (login required)

Edit item Edit item
Provide Feedback