Skip to main content
eScholarship
Open Access Publications from the University of California
Refine Search

UC Santa Cruz

UC Santa Cruz Previously Published Works bannerUC Santa Cruz

Search for the Standard Model Higgs boson in the decay channel H→ZZ (*) →4ℓ with 4.8 fb -1 of pp collision data at √s=7 TeV with ATLAS

  • Author(s): Aad, G;
  • Abbott, B;
  • Abdallah, J;
  • Abdel Khalek, S;
  • Abdelalim, AA;
  • Abdesselam, A;
  • Abdinov, O;
  • Abi, B;
  • Abolins, M;
  • AbouZeid, OS;
  • Abramowicz, H;
  • Abreu, H;
  • Acerbi, E;
  • Acharya, BS;
  • Adamczyk, L;
  • Adams, DL;
  • Addy, TN;
  • Adelman, J;
  • Aderholz, M;
  • Adomeit, S;
  • Adragna, P;
  • Adye, T;
  • Aefsky, S;
  • Aguilar-Saavedra, JA;
  • Aharrouche, M;
  • Ahlen, SP;
  • Ahles, F;
  • Ahmad, A;
  • Ahsan, M;
  • Aielli, G;
  • Akdogan, T;
  • Åkesson, TPA;
  • Akimoto, G;
  • Akimov, AV;
  • Akiyama, A;
  • Alam, MS;
  • Alam, MA;
  • Albert, J;
  • Albrand, S;
  • Aleksa, M;
  • Aleksandrov, IN;
  • Alessandria, F;
  • Alexa, C;
  • Alexander, G;
  • Alexandre, G;
  • Alexopoulos, T;
  • Alhroob, M;
  • Aliev, M;
  • Alimonti, G;
  • Alison, J;
  • Aliyev, M;
  • Allbrooke, BMM;
  • Allport, PP;
  • Allwood-Spiers, SE;
  • Almond, J;
  • Aloisio, A;
  • Alon, R;
  • Alonso, A;
  • Alvarez Gonzalez, B;
  • Alviggi, MG;
  • Amako, K;
  • Amaral, P;
  • Amelung, C;
  • Ammosov, VV;
  • Amorim, A;
  • Amorós, G;
  • Amram, N;
  • Anastopoulos, C;
  • Ancu, LS;
  • Andari, N;
  • Andeen, T;
  • Anders, CF;
  • Anders, G;
  • Anderson, KJ;
  • Andreazza, A;
  • Andrei, V;
  • Andrieux, ML;
  • Anduaga, XS;
  • Angerami, A;
  • Anghinolfi, F;
  • Anisenkov, A;
  • Anjos, N;
  • Annovi, A;
  • Antonaki, A;
  • Antonelli, M;
  • Antonov, A;
  • Antos, J;
  • Anulli, F;
  • Aoun, S;
  • Aperio Bella, L;
  • Apolle, R;
  • Arabidze, G;
  • Aracena, I;
  • Arai, Y;
  • Arce, ATH;
  • Arfaoui, S;
  • Arguin, JF;
  • Arik, E;
  • Arik, M;
  • Armbruster, AJ
  • et al.

Published Web Location

https://doi.org/10.1016/j.physletb.2012.03.005Creative Commons 'BY' version 4.0 license
Abstract

This Letter presents a search for the Standard Model Higgs boson in the decay channel H→ZZ (*) →ℓ + ℓ - ℓ '+ ℓ '- , where ℓ, ℓ ' =e or μ, using proton-proton collisions at √s=7 TeV recorded with the ATLAS detector and corresponding to an integrated luminosity of 4.8 fb -1 . The four-lepton invariant mass distribution is compared with Standard Model background expectations to derive upper limits on the cross section of a Standard Model Higgs boson with a mass between 110 GeV and 600 GeV. The mass ranges 134-156 GeV, 182-233 GeV, 256-265 GeV and 268-415 GeV are excluded at the 95% confidence level. The largest upward deviations from the background-only hypothesis are observed for Higgs boson masses of 125 GeV, 244 GeV and 500 GeV with local significances of 2.1, 2.2 and 2.1 standard deviations, respectively. Once the look-elsewhere effect is considered, none of these excesses are significant. © 2012 CERN.

Many UC-authored scholarly publications are freely available on this site because of the UC's open access policies. Let us know how this access is important for you.

Main Content
For improved accessibility of PDF content, download the file to your device.
Current View


Top