Measurement of the W(+/-)Z production cross section and limits on anomalous triple gauge couplings in proton-proton collisions at root s=7 TeV with the ATLAS detector

Journal Article · Fri Mar 23 04:00:00 EDT 2012 · Physics Letters, (Section) B

OSTI ID:1043423

Aad, G; Abbott, B; Abdallah, J; A, Abdelalim A; Abdesselam, A; Abdinov, O; Abi, B; Abolins, M; Abramowicz, H; Abreu, H; Acerbi, E; S, Acharya B; L, Adams D; N, Addy T; Adelman, J; Aderholz, M; Adomeit, S; Adragna, P; Adye, T

This Letter presents a measurement of W{sup {+-}} Z production in 1.02 fb{sup -1} of pp collision data at {radical}s = 7 TeV collected by the ATLAS experiment in 2011. Doubly leptonic decay events are selected with electrons, muons and missing transverse momentum in the final state. In total 71 candidates are observed, with a background expectation of 12.1 {+-} 1.4(stat.){sub -2.0}{sup +4.1}(syst.) events. The total cross section for W{sup {+-}} Z production for Z/{gamma}* masses within the range 66 GeV to 116 GeV is determined to be {sigma}{sub WZ}{sup tot} = 20.5{sub -2.8}{sup +3.1}(stat.){sub -1.3}{sup +1.4}(syst.){sub -0.8}{sup +0.9}(lumi.) pb, which is consistent with the Standard Model expectation of 17.3{sub -0.8}{sup +1.3}. Limits on anomalous triple gauge boson couplings are extracted.

• Research Organization: BROOKHAVEN NATIONAL LABORATORY (BNL)
• Sponsoring Organization: USDOE SC OFFICE OF SCIENCE (SC)
• DOE Contract Number: AC02-98CH10886
• OSTI ID: 1043423
• Report Number(s): BNL--98095-2012-JA; KA1101021
• Journal Information: Physics Letters, (Section) B, Journal Name: Physics Letters, (Section) B Journal Issue: 4-5 Vol. 709; ISSN PYLBAJ; ISSN 0370-2693
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BOSONS
CROSS SECTIONS
ELECTRONS
LEPTONIC DECAY
MUONS
PRODUCTION
STANDARD MODEL
TOTAL CROSS SECTIONS
TRANSVERSE MOMENTUM