Search for the standard model Higgs boson produced in association with a Z boson in 7.9 fb.sup.−1./sup. of p¯p collisions at √ s = 1.96 TeV using the CDF II detector

0389133 - FZÚ 2013 RIV NL eng J - Článek v odborném periodiku
Aaltonen, T. - Gonzalez, B.A. - Amerio, S. - Lysák, Roman … celkem 476 autorů
Search for the standard model Higgs boson produced in association with a Z boson in 7.9 fb⁻¹ of p¯p collisions at √ s = 1.96 TeV using the CDF II detector.
Physics Letters. B. Roč. 715, 1-3 (2012), s. 98-104. ISSN 0370-2693. E-ISSN 1873-2445
Grant CEP: GA MŠMT LC527
Výzkumný záměr: CEZ:AV0Z10100502
Klíčová slova: Higgs boson search * multivariate techniques * Z0 leptonic decay * Batavia TEVATRON * CDF * hadronic decay
Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
Impakt faktor: 4.569, rok: 2012
http://arxiv.org/abs/arXiv:1203.5815

We present a search for the standard model Higgs boson produced in association with a Z boson, using up to 7.9 fb−1 of integrated luminosity from ppˉ collisions collected with the CDF II detector. We utilize several novel techniques, including multivariate lepton selection, multivariate trigger parametrization, and a multi-stage signal discriminant consisting of specialized functions trained to distinguish individual backgrounds. By increasing acceptance and enhancing signal discrimination, these techniques have significantly improved the sensitivity of the analysis above what was expected from a larger dataset alone. We observe no significant evidence for a signal, and we set limits on the ZH production cross section. For a Higgs boson with mass 115 GeV/c2, we expect (observe) a limit of 3.9 (4.8) times the standard model predicted value, at the 95% credibility level.
Trvalý link: http://hdl.handle.net/11104/0218013