Prima Facie Evidence against Spin-Two Higgs Impostors

The new particle X recently discovered by the ATLAS and CMS Collaborations is widely expected to have spin zero, but this remains to be determined. The leading alternative is that X has spin two, presumably with graviton-like couplings. We show that measurements of the X particle to pairs of vector...

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Detalles Bibliográficos
Autores principales: Ellis, John, Sanz, Veronica, You, Tevong
Lenguaje:eng
Publicado: 2012
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/j.physletb.2013.08.007
http://cds.cern.ch/record/1493871
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author Ellis, John
Sanz, Veronica
You, Tevong
author_facet Ellis, John
Sanz, Veronica
You, Tevong
author_sort Ellis, John
collection CERN
description The new particle X recently discovered by the ATLAS and CMS Collaborations is widely expected to have spin zero, but this remains to be determined. The leading alternative is that X has spin two, presumably with graviton-like couplings. We show that measurements of the X particle to pairs of vector bosons constrain such scenarios. In particular, a graviton-like Higgs impostor in scenarios with a warped extra dimension of AdS type is prima facie excluded, principally because they predict too small a ratio between the X couplings to WW and ZZ, compared with that to photons. The data also disfavour universal couplings to pairs of photons and gluons, which would be predicted in a large class of graviton-like models.
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institution Organización Europea para la Investigación Nuclear
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spelling cern-14938712019-09-30T06:29:59Zdoi:10.1016/j.physletb.2013.08.007http://cds.cern.ch/record/1493871engEllis, JohnSanz, VeronicaYou, TevongPrima Facie Evidence against Spin-Two Higgs ImpostorsParticle Physics - PhenomenologyThe new particle X recently discovered by the ATLAS and CMS Collaborations is widely expected to have spin zero, but this remains to be determined. The leading alternative is that X has spin two, presumably with graviton-like couplings. We show that measurements of the X particle to pairs of vector bosons constrain such scenarios. In particular, a graviton-like Higgs impostor in scenarios with a warped extra dimension of AdS type is prima facie excluded, principally because they predict too small a ratio between the X couplings to WW and ZZ, compared with that to photons. The data also disfavour universal couplings to pairs of photons and gluons, which would be predicted in a large class of graviton-like models.The new particle X recently discovered by the ATLAS and CMS Collaborations is widely expected to have spin zero, but this remains to be determined. The leading alternative is that X has spin two, presumably with graviton-like couplings. We show that measurements of the X particle to pairs of vector bosons constrain such scenarios. In particular, a graviton-like Higgs impostor in scenarios with a warped extra dimension of AdS type is prima facie excluded, principally because they predict too small a ratio between the X couplings to WW and ZZ, compared with that to photons. The data also disfavour universal couplings to pairs of photons and gluons, which would be predicted in a large class of graviton-like models.The new particle X recently discovered by the ATLAS and CMS Collaborations is widely expected to have spin zero, but this remains to be determined. The leading alternative is that X has spin two, presumably with graviton-like couplings. We show that measurements of the X particle to pairs of vector bosons constrain such scenarios. In particular, a graviton-like Higgs impostor in scenarios with a warped extra dimension of AdS type is prima facie excluded, principally because they predict too small a ratio between the X couplings to WW and ZZ , compared with that to photons. The data also disfavour universal couplings to pairs of photons and gluons, which would be predicted in a large class of graviton-like models.KCL-PH-TH-2012-45LCTS-2012-31CERN-PH-TH-2012-310arXiv:1211.3068KCL-PH-TH-2012-45LCTS-2012-31CERN-PH-TH-2012-310oai:cds.cern.ch:14938712012-11-14
spellingShingle Particle Physics - Phenomenology
Ellis, John
Sanz, Veronica
You, Tevong
Prima Facie Evidence against Spin-Two Higgs Impostors
title Prima Facie Evidence against Spin-Two Higgs Impostors
title_full Prima Facie Evidence against Spin-Two Higgs Impostors
title_fullStr Prima Facie Evidence against Spin-Two Higgs Impostors
title_full_unstemmed Prima Facie Evidence against Spin-Two Higgs Impostors
title_short Prima Facie Evidence against Spin-Two Higgs Impostors
title_sort prima facie evidence against spin-two higgs impostors
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/j.physletb.2013.08.007
http://cds.cern.ch/record/1493871
work_keys_str_mv AT ellisjohn primafacieevidenceagainstspintwohiggsimpostors
AT sanzveronica primafacieevidenceagainstspintwohiggsimpostors
AT youtevong primafacieevidenceagainstspintwohiggsimpostors

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