Searches are performed for resonant and nonresonant Higgs boson pair production in theγγb ̄bfinal stateusing20fb−1of proton-proton collisions at a center-of-mass energy of 8 TeV recorded with the ATLASdetector at the CERN Large Hadron Collider. A 95% confidence level upper limit on the cross section timesbranching ratio of nonresonant production is set at 2.2 pb, while the expected limit is 1.0 pb. The differencederives from a modest excess of events, corresponding to 2.4 standard deviations from the background-onlyhypothesis. The limit observed in the search for a narrowX→hhresonance ranges between 0.7 and 3.5 pbas a function of the resonance mass

Search for Higgs Boson Pair Production in the gamma gamma b(b)over-bar Final State Using pp Collision Data at root s=8 TeV from the ATLAS Detector / Aad, G., Abbott, B., Abdallah, J., Khalek, S.A., Abdinov, O., Aben, R., Abi, B., Abolins, M., Abouzeid, O.S., Abramowicz, H., Abreu, H., Abreu, R., Abulaiti, Y., Acharya, B.S., Adamczyk, L., Adams, D.L., Adelman, J., Adomeit, S., Adye, T., Agatonovic Jovin, T., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 114:8(2015). [10.1103/PhysRevLett.114.081802]

Search for Higgs Boson Pair Production in the gamma gamma b(b)over-bar Final State Using pp Collision Data at root s=8 TeV from the ATLAS Detector

Artoni, G.;BAGNAIA, Paolo;BINI, Cesare;DE CECCO, Sandro;DI DOMENICO, Antonio;GAUZZI, Paolo;GENTILE, Simonetta;GIAGU, Stefano;Kado, M.;LACAVA, Francesco;LUCI, Claudio;MESSINA, Andrea;Policicchio, A.;SOLFAROLI CAMILLOCCI, ELENA;
2015

Abstract

Searches are performed for resonant and nonresonant Higgs boson pair production in theγγb ̄bfinal stateusing20fb−1of proton-proton collisions at a center-of-mass energy of 8 TeV recorded with the ATLASdetector at the CERN Large Hadron Collider. A 95% confidence level upper limit on the cross section timesbranching ratio of nonresonant production is set at 2.2 pb, while the expected limit is 1.0 pb. The differencederives from a modest excess of events, corresponding to 2.4 standard deviations from the background-onlyhypothesis. The limit observed in the search for a narrowX→hhresonance ranges between 0.7 and 3.5 pbas a function of the resonance mass
2015
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01 Pubblicazione su rivista::01a Articolo in rivista
Search for Higgs Boson Pair Production in the gamma gamma b(b)over-bar Final State Using pp Collision Data at root s=8 TeV from the ATLAS Detector / Aad, G., Abbott, B., Abdallah, J., Khalek, S.A., Abdinov, O., Aben, R., Abi, B., Abolins, M., Abouzeid, O.S., Abramowicz, H., Abreu, H., Abreu, R., Abulaiti, Y., Acharya, B.S., Adamczyk, L., Adams, D.L., Adelman, J., Adomeit, S., Adye, T., Agatonovic Jovin, T., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 114:8(2015). [10.1103/PhysRevLett.114.081802]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/839035
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