Evidence for electroweak production of W±W±jj in pp collisions at √s = 8 TeV with the ATLAS detector

0439906 - FZÚ 2015 RIV US eng J - Článek v odborném periodiku
Aad, G. - Abbott, B. - Abdallah, J. - Böhm, Jan - Chudoba, Jiří - Havránek, Miroslav - Hejbal, Jiří - Jakoubek, Tomáš - Kepka, Oldřich - Kupčo, Alexander - Kůs, Vlastimil - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Myška, Miroslav - Němeček, Stanislav - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek - Vrba, Václav … celkem 2880 autorů
Evidence for electroweak production of W±W±jj in pp collisions at √s = 8 TeV with the ATLAS detector.
Physical Review Letters. Roč. 113, č. 14 (2014), "141803-1"-"141803-18". ISSN 0031-9007. E-ISSN 1079-7114
Grant CEP: GA MŠMT(CZ) LG13009
Institucionální podpora: RVO:68378271
Klíčová slova: ATLAS * CERN LHC Coll * sensitivity * dilepton * same sign * scattering * W+ * pair production * dijet * associated production
Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
Impakt faktor: 7.512, rok: 2014

This Letter presents the first study of W±W±jj, same-electric-charge diboson production in association with two jets, using 20.3 fb−1 of proton--proton collision data at s√=8 TeV 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.
Trvalý link: http://hdl.handle.net/11104/0243084