Header

UZH-Logo

Maintenance Infos

Search for anomalous couplings in boosted $WW/WZ \to\ellν q \overline q$ production in proton-proton collisions at $\sqrt{s} = 8$ TeV


CMS Collaboration; Canelli, Florencia; Kilminster, Benjamin; Aarestad, Thea; Caminada, Lea; De Cosa, Annapaoloa; Del Burgo, Riccardo; Donato, Silvio; Galloni, Camilla; Hinzmann, Andreas; Hreus, Tomas; Ngadiuba, Jennifer; Pinna, Deborah; Rauco, Giorgia; Robmann, Peter; Salerno, Daniel; Schweiger, Korbinian; Seitz, Claudia; Takahashi, Yuta; Zucchetta, Alberto; et al (2017). Search for anomalous couplings in boosted $WW/WZ \to\ellν q \overline q$ production in proton-proton collisions at $\sqrt{s} = 8$ TeV. Physics Letters B, B772:21-42.

Abstract

This Letter presents a search for new physics manifested as anomalous triple gauge boson couplings in WW and WZ diboson production in proton–proton collisions. The search is performed using events containing a W boson that decays leptonically and a W or Z boson whose decay products are merged into a single reconstructed jet. The data, collected at $\sqrt{s} = 8$ TeV with the CMS detector at the LHC, correspond to an integrated luminosity of 19 $fb^{−1}$. No evidence for anomalous triple gauge couplings is found and the following 95% confidence level limits are set on their values: $λ ([−0.011,0.011]), Δκ_γ ([−0.044,0.063])$, and $Δg_Z^1 ([−0.0087,0.024])$. These limits are also translated into their effective field theory equivalents: $c_{WWW}/Λ2 ([−2.7,2.7]TeV^{−2}), c_B/Λ2 ([−14,17]TeV−2)$, and $c_W/Λ2 ([−2.0,5.7]TeV^{−2})$.

Abstract

This Letter presents a search for new physics manifested as anomalous triple gauge boson couplings in WW and WZ diboson production in proton–proton collisions. The search is performed using events containing a W boson that decays leptonically and a W or Z boson whose decay products are merged into a single reconstructed jet. The data, collected at $\sqrt{s} = 8$ TeV with the CMS detector at the LHC, correspond to an integrated luminosity of 19 $fb^{−1}$. No evidence for anomalous triple gauge couplings is found and the following 95% confidence level limits are set on their values: $λ ([−0.011,0.011]), Δκ_γ ([−0.044,0.063])$, and $Δg_Z^1 ([−0.0087,0.024])$. These limits are also translated into their effective field theory equivalents: $c_{WWW}/Λ2 ([−2.7,2.7]TeV^{−2}), c_B/Λ2 ([−14,17]TeV−2)$, and $c_W/Λ2 ([−2.0,5.7]TeV^{−2})$.

Statistics

Altmetrics

Downloads

4 downloads since deposited on 15 Dec 2017
4 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:2017
Deposited On:15 Dec 2017 11:08
Last Modified:18 Dec 2017 15:56
Publisher:Elsevier
ISSN:0370-2693
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1016/j.physletb.2017.06.009

Download

Download PDF  'Search for anomalous couplings in boosted $WW/WZ \to\ellν q \overline q$ production in proton-proton collisions at $\sqrt{s} = 8$ TeV'.
Preview
Content: Published Version
Filetype: PDF
Size: 942kB
View at publisher
Licence: Creative Commons: Attribution 4.0 International (CC BY 4.0)