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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Light-quark dipole operators at the LHC

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Author(s):
Almeida, Eduardo da Silva [1] ; Rosa-Agostinho, N. [2, 3] ; Eboli, Oscar J. P. [1] ; Gonzalez-Garcia, M. C. [4, 2, 3, 5]
Total Authors: 4
Affiliation:
[1] Univ Sao Paulo, Inst Fis, BR-05508090 Sao Paulo - Brazil
[2] Univ Barcelona, Dept Fis Quant & Astrofis, Diagonal 647, E-08028 Barcelona - Spain
[3] Univ Barcelona, Inst Ciencies Cosmos, Diagonal 647, E-08028 Barcelona - Spain
[4] SUNY Stony Brook, CN Yang Inst Theoret Phys, Stony Brook, NY 11794 - USA
[5] ICREA, Pg Lluis Co 23, Barcelona 08010 - Spain
Total Affiliations: 5
Document type: Journal article
Source: Physical Review D; v. 100, n. 1 JUL 22 2019.
Web of Science Citations: 0
Abstract

We study the effect of operators generating dipole couplings of the light quarks to electroweak gauge bosons on several observables at the LHC. We start by demonstrating that the determination of the gauge-boson self-couplings from electroweak diboson production at LHC is robust under the inclusion of those quark dipole operators even when let them totally unconstrained in the analysis. Conversely, we determine the bounds that the diboson data imposes on the light-quark dipole couplings and show that they represent a significant improvement over the limits arising from Z and W electroweak precision measurements. We also explore the sensitivity of the Drell-Yan cross section determination at LHC Run 1, and the results on resonance searches in high invariant-mass lepton pair production at Run 2 to further constrain the electroweak dipole couplings of the light quarks. (AU)

FAPESP's process: 18/16921-1 - Seach for new Physics on large hadron collider
Grantee:Eduardo da Silva Almeida
Support type: Scholarships in Brazil - Doctorate