Show simple item record

dc.contributor.authorCMS Collaboration
Adair, A.
Akgun, B.
Ecklund, K.M.
Geurts, F.J.M.
Li, W.
Michlin, B.
Padley, B.P.
Redjimi, R.
Roberts, J.
Zabel, J.
dc.date.accessioned 2015-04-20T19:52:03Z
dc.date.available 2015-04-20T19:52:03Z
dc.date.issued 2014
dc.identifier.citation CMS Collaboration, Adair, A., Akgun, B., et al.. "Evidence for the direct decay of the 125 GeV Higgs boson to fermions." Nature Physics, 10, (2014) Nature Publishing Group: 557-560. http://dx.doi.org/10.1038/nphys3005.
dc.identifier.urihttps://hdl.handle.net/1911/79609
dc.description.abstract The discovery of a new boson with a mass of approximately 125 GeV in 2012 at the Large Hadron Collider [1, 2, 3] has heralded a new era in understanding the nature of electroweak symmetry breaking and possibly completing the standard model of particle physics [4, 5, 6, 7, 8, 9]. Since the first observation in decays to γγ, WW and ZZ boson pairs, an extensive set of measurements of the mass [10, 11] and couplings to W and Z bosons [11, 12, 13], as well as multiple tests of the spin-parity quantum numbers [10, 11, 13, 14], have revealed that the properties of the new boson are consistent with those of the long-sought agent responsible for electroweak symmetry breaking. An important open question is whether the new particle also couples to fermions, and in particular to down-type fermions, as the current measurements mainly constrain the couplings to the up-type top quark. Determination of the couplings to down-type fermions requires direct measurement of the corresponding Higgs boson decays, as recently reported by the Compact Muon Solenoid (CMS) experiment in the study of Higgs decays to bottom quarks [15] and τ leptons [16]. Here, we report the combination of these two channels, which results in strong evidence for the direct coupling of the 125 GeV Higgs boson to down-type fermions, with an observed significance of 3.8 standard deviations, when 4.4 are expected.
dc.language.iso eng
dc.publisher Nature Publishing Group
dc.rights This is an Open Access article distributed under the terms of the a Creative Commons Attribution - Noncommercial -Share Alike 3.0 Unported License, which permits unrestricted non-commercial use and distribution, provided the original work is properly cited. If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/
dc.title Evidence for the direct decay of the 125 GeV Higgs boson to fermions
dc.type Journal article
dc.citation.journalTitle Nature Physics
dc.citation.volumeNumber 10
dc.type.dcmi Text
dc.identifier.doihttp://dx.doi.org/10.1038/nphys3005
dc.type.publication publisher version
dc.citation.firstpage 557
dc.citation.lastpage 560


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record

This is an Open Access article distributed under the terms of the a Creative Commons Attribution - Noncommercial -Share Alike 3.0 Unported License, which permits unrestricted non-commercial use and distribution, provided the original work is properly cited. If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.
Except where otherwise noted, this item's license is described as This is an Open Access article distributed under the terms of the a Creative Commons Attribution - Noncommercial -Share Alike 3.0 Unported License, which permits unrestricted non-commercial use and distribution, provided the original work is properly cited. If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.