This Letter presents a search for new resonances decaying to final states with a vector boson produced in association with a high transverse momentum photon, V γ , with V=W(→lν ) or Z ( → ll), where l =e or μ. The measurements use 20.3 fb^−1 of proton–proton collision data at a center-of-mass energy of √ s = 8TeV recorded with the ATLAS detector. No deviations from the Standard Model expectations are found, and production cross section limits are set at 95% confidence level. Masses of the hypothetical aT and ωT states of a benchmark Low Scale Technicolor model are excluded in the ranges [275,960] GeV and [200,700]∪[750,890]GeV, respectively. Limits at 95% confidence level on the production cross section of a singlet scalar resonance decaying to Zγ final states have also been obtained for masses below 1180 GeV.
Search for new resonances in Wγ and Zγ final states in pp collisions at √s=8TeV with the ATLAS detector
CONTA, CLAUDIO;FRANCHINO, SILVIA;FRATERNALI, MARCO;LIVAN, MICHELE;NEGRI, ANDREA;REBUZZI, DANIELA MARCELLA;RIMOLDI, ADELE;
2014-01-01
Abstract
This Letter presents a search for new resonances decaying to final states with a vector boson produced in association with a high transverse momentum photon, V γ , with V=W(→lν ) or Z ( → ll), where l =e or μ. The measurements use 20.3 fb^−1 of proton–proton collision data at a center-of-mass energy of √ s = 8TeV recorded with the ATLAS detector. No deviations from the Standard Model expectations are found, and production cross section limits are set at 95% confidence level. Masses of the hypothetical aT and ωT states of a benchmark Low Scale Technicolor model are excluded in the ranges [275,960] GeV and [200,700]∪[750,890]GeV, respectively. Limits at 95% confidence level on the production cross section of a singlet scalar resonance decaying to Zγ final states have also been obtained for masses below 1180 GeV.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
