A search for scalar particles decaying via narrow resonances into two photons in the mass range 65-600 GeV is performed using 20.3fb-1 of s=8TeV pp collision data collected with the ATLAS detector at the Large Hadron Collider. The recently discovered Higgs boson is treated as a background. No significant evidence for an additional signal is observed. The results are presented as limits at the 95\% confidence level on the production cross section of a scalar boson times branching ratio into two photons, in a fiducial volume where the reconstruction efficiency is approximately independent of the event topology. The upper limits set extend over a considerably wider mass range than previous searches. © Published by the American Physical Society.
Search for Scalar Diphoton Resonances in the Mass Range 65-600 GeV with the ATLAS Detector in pp Collision Data at s =8TeV / 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. - 113:17(2014). [10.1103/PhysRevLett.113.171801]
Search for Scalar Diphoton Resonances in the Mass Range 65-600 GeV with the ATLAS Detector in pp Collision Data at s =8TeV
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
A search for scalar particles decaying via narrow resonances into two photons in the mass range 65-600 GeV is performed using 20.3fb-1 of s=8TeV pp collision data collected with the ATLAS detector at the Large Hadron Collider. The recently discovered Higgs boson is treated as a background. No significant evidence for an additional signal is observed. The results are presented as limits at the 95\% confidence level on the production cross section of a scalar boson times branching ratio into two photons, in a fiducial volume where the reconstruction efficiency is approximately independent of the event topology. The upper limits set extend over a considerably wider mass range than previous searches. © Published by the American Physical Society.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
