Search for the standard model Higgs boson in ZH -> l(+) l(-) b(b)over-bar production with the D0 detector in 9.7 fb(-1)of p(p)over-bar collisions at root s=1.96 TeV

0383158 - FZÚ 2013 RIV US eng J - Článek v odborném periodiku
Abazov, V. M. - Abbott, B. - Acharya, B.S. - Kupčo, Alexander - Lokajíček, Miloš … celkem 394 autorů
Search for the standard model Higgs boson in ZH -> l(+) l(-) b(b)over-bar production with the D0 detector in 9.7 fb(-1)of p(p)over-bar collisions at root s=1.96 TeV.
Physical Review Letters. Roč. 109, č. 12 (2012), "121803-1"-"121803-8". ISSN 0031-9007. E-ISSN 1079-7114
Grant CEP: GA MŠMT LA08047
Výzkumný záměr: CEZ:AV0Z10100502
Klíčová slova: D0 * Tevatron * standard model * Higgs boson * collisions
Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
Impakt faktor: 7.943, rok: 2012
http://link.aps.org/doi/10.1103/PhysRevLett.109.121803

We present a search for the standard model (SM) Higgs boson produced in association with a Z boson in 9.7 fb-1 of ppˉcollisions collected with the D0 detector at the Fermilab Tevatron Collider at √s=1.96 TeV. Selected events contain one reconstructed Z->e+e- or Z->μ+μ- candidate and at least two jets, including at least one jet identified as likely to contain a b quark. To validate the search procedure, we also measure the cross section for ZZ production in the same final state. It is found to be consistent with its SM prediction. We set upper limits on the ZH production cross section times branching ratio for H->bbˉ at the 95% C.L. for Higgs boson masses 90≤MH≤150 GeV. The observed (expected) limit for MH=125 GeV is 7.1 (5.1) times the SM cross section.
Trvalý link: http://hdl.handle.net/11104/0213191