We present a search for the standard model Higgs boson produced with a Z boson in 4.1 fb-1 of data collected with the CDF II detector at the Tevatron. In events consistent with the decay of the Higgs boson to a bottom-quark pair and the Z boson to electrons or muons, we set 95% credibility level upper limits on the ZH production cross section times the H --> bb-bar branching ratio. Improved analysis methods enhance signal sensitivity by 20% relative to previous searches beyond the gain due to the larger data sample. At a Higgs boson mass of 115 GeV/c2 we set a limit of 5.9 times the standard model value.
T. AALTONEN, B.ALVAREZ GONZALEZV, S. AMERIO, D. AMIDEI, A. ANASTASSOV, A. ANNOVI, et al. (2010). Improved Search for a Higgs Boson Produced in Association with Z -> l+ l- in p anti-p Collisions at s**(1/2)=1.96 TeV. PHYSICAL REVIEW LETTERS, 105, 251802-1-251802-7 [10.1103/PhysRevLett.105.251802].
Improved Search for a Higgs Boson Produced in Association with Z -> l+ l- in p anti-p Collisions at s**(1/2)=1.96 TeV
CASTRO, ANDREA;DENINNO, MARIA MADDALENA;MARGAROLI, FABRIZIO;MAZZANTI, PAOLO;MOGGI, NICCOLO';MUSSINI, MANUEL;RIMONDI, FRANCO;ZUCCHELLI, STEFANO
2010
Abstract
We present a search for the standard model Higgs boson produced with a Z boson in 4.1 fb-1 of data collected with the CDF II detector at the Tevatron. In events consistent with the decay of the Higgs boson to a bottom-quark pair and the Z boson to electrons or muons, we set 95% credibility level upper limits on the ZH production cross section times the H --> bb-bar branching ratio. Improved analysis methods enhance signal sensitivity by 20% relative to previous searches beyond the gain due to the larger data sample. At a Higgs boson mass of 115 GeV/c2 we set a limit of 5.9 times the standard model value.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.