Limits on the production of the standard model Higgs boson √ in pp collisions at s = 7 TeV with the ATLAS detector

ATLAS COLLABORATION, G. AAD, F. MONTICELLI, ET AL

EUROPEAN PHYSICAL JOURNAL C - PARTICLES AND FIELDS

SPRINGER

Lugar: Berlin; Año: 2011 vol. 71 p. 1 - 30

1434-6044

A search for the Standard Model Higgs boson atthe Large Hadron Collider (LHC) running at a centre-of-mass energy of 7 TeV is reported, based on a total integratedluminosity of up to 40 pb−1 collected by the ATLAS detec-tor in 2010. Several Higgs boson decay channels: H → γ γ ,H → ZZ (∗) →, H → ZZ → νν, H → ZZ → qq,H → WW (∗) → ν ν and H → WW → νqq ( is e, μ) arecombined in a mass range from 110 GeV to 600 GeV. Thehighest sensitivity is achieved in the mass range between160 GeV and 170 GeV, where the expected 95% CL exclu-sion sensitivity is at Higgs boson production cross sections2.3 times the Standard Model prediction. Upper limits onthe cross section for its production are determined. Modelswith a fourth generation of heavy leptons and quarks withStandard Model-like couplings to the Higgs boson are alsoinvestigated and are excluded at 95% CL for a Higgs bosonmass in the range from 140 GeV to 185 GeV.