This Letter presents the first study of W±W±jj, same-electric-charge diboson production in association with two jets, using 20.3fb-1 of proton-proton collision data at s=8TeV recorded by the ATLAS detector at the Large Hadron Collider. Events with two reconstructed same-charge leptons (e±e±, e±μ±, and μ±μ±) and two or more jets are analyzed. Production cross sections are measured in two fiducial regions, with different sensitivities to the electroweak and strong production mechanisms. First evidence for W±W±jj production and electroweak-only W±W±jj production is observed with a significance of 4.5 and 3.6 standard deviations, respectively. The measured production cross sections are in agreement with standard model predictions. Limits at 95\% confidence level are set on anomalous quartic gauge couplings. © 2014 CERN, for the ATLAS Collaboration.
Evidence for electroweak production of W±W±jj in pp collisions at s =8TeV with the ATLAS detector / Aad, G., Aloisio, A., Alviggi, M., Canale, V., Chiefari, G., DELLA VOLPE, D., Merola, L., Conventi, F., DELLA PIETRA, M., Giordano, R., Rossi, E., SANCHEZ PINEDA, A.R., Carlino, G., de Asmundis, R., Di Donato, C., Doria, A., Iengo, P., Izzo, V., Sekhniaidze, G., Et, A.l.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 113:14(2014). [10.1103/PhysRevLett.113.141803]
Evidence for electroweak production of W±W±jj in pp collisions at s =8TeV with the ATLAS detector
ALOISIO, ALBERTO;ALVIGGI, MARIAGRAZIA;CANALE, VINCENZO;CHIEFARI, GIOVANNI;DELLA VOLPE, DOMENICO;MEROLA, LEONARDO;DELLA PIETRA, MASSIMO;GIORDANO, RAFFAELE;Rossi, Elvira;SANCHEZ PINEDA, ARTURO RODOLFO;
2014
Abstract
This Letter presents the first study of W±W±jj, same-electric-charge diboson production in association with two jets, using 20.3fb-1 of proton-proton collision data at s=8TeV recorded by the ATLAS detector at the Large Hadron Collider. Events with two reconstructed same-charge leptons (e±e±, e±μ±, and μ±μ±) and two or more jets are analyzed. Production cross sections are measured in two fiducial regions, with different sensitivities to the electroweak and strong production mechanisms. First evidence for W±W±jj production and electroweak-only W±W±jj production is observed with a significance of 4.5 and 3.6 standard deviations, respectively. The measured production cross sections are in agreement with standard model predictions. Limits at 95\% confidence level are set on anomalous quartic gauge couplings. © 2014 CERN, for the ATLAS Collaboration.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
