INVESTIGADORES
WAHLBERG Hernan Pablo
artículos
Título:
Measurement of the Higgs boson mass from the H→γγ and H→ZZ∗→4ℓ channels in pp collisions at center-of-mass energies of 7 and 8 TeV with the ATLAS detector
Autor/es:
H. WAHLBERG Y ATLAS COLLABORATION
Revista:
PHYSICAL REVIEW D
Editorial:
AMER PHYSICAL SOC
Referencias:
Lugar: New York; Año: 2014
ISSN:
1550-7998
Resumen:
An improved measurement of the mass of the Higgs boson is derived from a
combined fit to the reconstructed invariant mass spectra of the decay
channels H→γγ and H→ZZ∗→4ℓ. The analysis uses the pp
collision data sample recorded by the ATLAS experiment at the CERN
Large Hadron Collider at center-of-mass energies of 7 TeV and 8 TeV,
corresponding to an integrated luminosity of 25 fb−1. The measured value of the Higgs boson mass is mH=125.36±0.37(stat)±0.18(syst) GeV.
This result is based on improved energy-scale calibrations for photons,
electrons, and muons as well as other analysis improvements, and
supersedes the previous result from ATLAS. Upper limits on the total
width of the Higgs boson are derived from fits to the invariant mass
spectra of the H→γγ and H→ZZ∗→4ℓ decay channels.