Evidence for a particle produced in association with weak bosons and decaying to a bottom-antibottom quark pair in Higgs boson searches at the Tevatron

0383152 - FZÚ 2013 RIV US eng J - Článek v odborném periodiku
Aaltonen, T. - Abazov, V. M. - Abbott, B. - Kupčo, Alexander - Lokajíček, Miloš … celkem 868 autorů
Evidence for a particle produced in association with weak bosons and decaying to a bottom-antibottom quark pair in Higgs boson searches at the Tevatron.
Physical Review Letters. Roč. 109, č. 7 (2012), "071804-1"-"071804-12". ISSN 0031-9007. E-ISSN 1079-7114
Grant CEP: GA MŠMT LA08047
Výzkumný záměr: CEZ:AV0Z10100502
Klíčová slova: CDF * FermilabTevatron * D0 * Higgs boson
Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
Impakt faktor: 7.943, rok: 2012
http://link.aps.org/doi/10.1103/PhysRevLett.109.071804

We combine searches by the CDF and D0 Collaborations for the associated production of a Higgs boson with a W or Z boson and subsequent decay of the Higgs boson to a bottom-antibottom quark pair. The data, originating from Fermilab Tevatron ppˉcollisions at √s=1.96 TeV, correspond to integrated luminosities of up to 9.7 fb-1. The searches are conducted for a Higgs boson with mass in the range 100–150 GeV/c2. We observe an excess of events in the data compared with the background predictions, which is most significant in the mass range between 120 and 135 GeV/c2. The largest local significance is 3.3 standard deviations, corresponding to a global significance of 3.1 standard deviations. We interpret this as evidence for the presence of a new particle consistent with the standard model Higgs boson, which is produced in association with a weak vector boson and decays to a bottom-antibottom quark pair.
Trvalý link: http://hdl.handle.net/11104/0213185