Measurement of W^{+}W^{-} production in pp collisions at sqrt[s]=7 TeV with the ATLAS detector and limits on anomalous WWZ and WWγ couplings (original) (raw)
Related papers
2012
This paper presents a measurement of the W þ W À production cross section in pp collisions at ffiffi ffi s p ¼ 7 TeV. The leptonic decay channels are analyzed using data corresponding to an integrated luminosity of 4:6 fb À1 collected with the ATLAS detector at the Large Hadron Collider. The W þ W À production cross section ðpp ! W þ W À þ XÞ is measured to be 51:9 AE 2:0ðstatÞ AE 3:9ðsystÞ AE 2:0ðlumiÞ pb, compatible with the Standard Model prediction of 44:7 þ2:1 À1:9 pb. A measurement of the normalized fiducial cross section as a function of the leading lepton transverse momentum is also presented. The reconstructed transverse momentum distribution of the leading lepton is used to extract limits on anomalous WWZ and WW couplings.
Physical Review D, 2013
This paper presents a measurement of the W þ W À production cross section in pp collisions at ffiffi ffi s p ¼ 7 TeV. The leptonic decay channels are analyzed using data corresponding to an integrated luminosity of 4:6 fb À1 collected with the ATLAS detector at the Large Hadron Collider. The W þ W À production cross section ðpp ! W þ W À þ XÞ is measured to be 51:9 AE 2:0ðstatÞ AE 3:9ðsystÞ AE 2:0ðlumiÞ pb, compatible with the Standard Model prediction of 44:7 þ2:1 À1:9 pb. A measurement of the normalized fiducial cross section as a function of the leading lepton transverse momentum is also presented. The reconstructed transverse momentum distribution of the leading lepton is used to extract limits on anomalous WWZ and WW couplings.
Measurement of the W^{+}W^{-} Cross Section in sqrt[s]=7 TeV pp Collisions with ATLAS
Physical Review Letters, 2011
Measurement of the W ± Z production cross section and limits on anomalous triple gauge couplings in proton-proton collisions at √ s = 7 TeV with the ATLAS detector ✩ .ATLAS Collaboration a r t i c l e i n f o a b s t r a c t This Letter presents a measurement of W ± Z production in 1.02 fb −1 of pp collision data at √ 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.) +4.1 −2.0 (syst.) events. The total cross section for W ± Z production for Z /γ * masses within the range 66 GeV to 116 GeV is determined to be σ tot WZ = 20.5 +3.1 −2.8 (stat.) +1.4 −1.3 (syst.) +0.9 −0.8 (lumi.) pb, which is consistent with the Standard Model expectation of 17.3 +1.3 0.8 pb. Limits on anomalous triple gauge boson couplings are extracted.
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2012
Measurement of the W W cross section in √ s = 7 TeV pp collisions with the ATLAS detector and limits on anomalous gauge couplings ✩ .ATLAS Collaboration a r t i c l e i n f o a b s t r a c t This Letter reports a measurement of the W W production cross section in √ s = 7 TeV pp collisions using data corresponding to an integrated luminosity of 1.02 fb −1 collected with the ATLAS detector. Using leptonic decays of oppositely charged W bosons, the total measured cross section is σ (pp → W W ) = 54.4 ± 4.0 (stat.) ± 3.9 (syst.) ± 2.0 (lumi.) pb, consistent with the Standard Model prediction of σ (pp → W W ) = 44.4 ± 2.8 pb. Limits on anomalous electroweak triple-gauge couplings are extracted from a fit to the transverse-momentum distribution of the leading charged lepton in the event.
Physical Review D, 2013
This paper presents a measurement of the W þ W À production cross section in pp collisions at ffiffi ffi s p ¼ 7 TeV. The leptonic decay channels are analyzed using data corresponding to an integrated luminosity of 4:6 fb À1 collected with the ATLAS detector at the Large Hadron Collider. The W þ W À production cross section ðpp ! W þ W À þ XÞ is measured to be 51:9 AE 2:0ðstatÞ AE 3:9ðsystÞ AE 2:0ðlumiÞ pb, compatible with the Standard Model prediction of 44:7 þ2:1 À1:9 pb. A measurement of the normalized fiducial cross section as a function of the leading lepton transverse momentum is also presented. The reconstructed transverse momentum distribution of the leading lepton is used to extract limits on anomalous WWZ and WW couplings.
The European Physical Journal C, 2013
A measurement of W + W -production in pp collisions at √ s = 7 TeV is presented. The data were collected with the CMS detector at the LHC, and correspond to an integrated luminosity of 4.92 ± 0.11 fb -1 . The W + W -candidates consist of two oppositely charged leptons, electrons or muons, accompanied by large missing transverse energy. The W + W -production cross section is measured to be 52.4 ± 2.0 (stat.) ± 4.5 (syst.) ± 1.2 (lum.) pb. This measurement is consistent with the standard model prediction of 47.0±2.0 pb at next-to-leading order. Stringent limits on the WWγ and WWZ anomalous triple gauge-boson couplings are set.