Search for Higgs boson pair production in the γγbb[over ¯] final state using pp collision data at sqrt[s]=8  TeV from the ATLAS detector.

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ID: 77923
2015
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Abstract
Searches are performed for resonant and nonresonant Higgs boson pair production in the γγbb[over ¯] final state using 20  fb^{-1} of proton-proton collisions at a center-of-mass energy of 8 TeV recorded with the ATLAS detector at the CERN Large Hadron Collider. A 95% confidence level upper limit on the cross section times branching ratio of nonresonant production is set at 2.2 pb, while the expected limit is 1.0 pb. The difference derives from a modest excess of events, corresponding to 2.4 standard deviations from the background-only hypothesis. The limit observed in the search for a narrow X→hh resonance ranges between 0.7 and 3.5 pb as a function of the resonance mass.
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Authors G Aad, B Abbott, J Abdallah, S Abdel Khalek, O Abdinov, R Aben, B Abi, M Abolins, O S AbouZeid, H Abramowicz, H Abreu, R Abreu, Y Abulaiti, B S Acharya, L Adamczyk, D L Adams, J Adelman, S Adomeit, T Adye, T Agatonovic-Jovin, J A Aguilar-Saavedra, M Agustoni, S P Ahlen, F Ahmadov, G Aielli, H Akerstedt, T P A Åkesson, G Akimoto, A V Akimov, G L Alberghi, J Albert, S Albrand, M J Alconada Verzini, M Aleksa, I N Aleksandrov, C Alexa, G Alexander, G Alexandre, T Alexopoulos, M Alhroob, G Alimonti, L Alio, J Alison, B M M Allbrooke, L J Allison, P P Allport, J Almond, A Aloisio, A Alonso, F Alonso, C Alpigiani, A Altheimer, B Alvarez Gonzalez, M G Alviggi, K Amako, Y Amaral Coutinho, C Amelung, D Amidei, S P Amor Dos Santos, A Amorim, S Amoroso, N Amram, G Amundsen, C Anastopoulos, L S Ancu, N Andari, T Andeen, C F Anders, G Anders, K J Anderson, A Andreazza, V Andrei, X S Anduaga, S Angelidakis, I Angelozzi, P Anger, A Angerami, F Anghinolfi, A V Anisenkov, N Anjos, A Annovi, A Antonaki, M Antonelli, A Antonov, J Antos, F Anulli, M Aoki, L Aperio Bella, R Apolle, G Arabidze, I Aracena, Y Arai, J P Araque, A T H Arce, J-F Arguin, S Argyropoulos, M Arik, A J Armbruster, O Arnaez, V Arnal
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Journal physical review letters
Year 2015
DOI
DOI not found
URL URL not found
Keywords
Atlas fully hadronic lhc proton–proton collisions top quark top-quark mass

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