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Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Higgs stability and the 750 GeV diphoton excess
AU - Salvio, Alberto
AU - Mazumdar, Anupam
N1 - © 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3.
PY - 2016/4/10
Y1 - 2016/4/10
N2 - We study the implications of a possible unstable particle with mass MX<TeV for the Higgs stability, naturalness and inflation. We pay particular attention to the case MX≈750 GeV, suggested by recent results of ATLAS and CMS on diphoton final states, and work within the minimal model: we add to the Standard Model field content a pseudoscalar and a vector-like fermion carrying both color and electric charge. This can stabilize the electroweak vacuum without invoking new physics at very high energies, which would give an unnaturally large contribution to the Higgs mass. We also show that inflation can be obtained via a UV modification of General Relativity.
AB - We study the implications of a possible unstable particle with mass MX<TeV for the Higgs stability, naturalness and inflation. We pay particular attention to the case MX≈750 GeV, suggested by recent results of ATLAS and CMS on diphoton final states, and work within the minimal model: we add to the Standard Model field content a pseudoscalar and a vector-like fermion carrying both color and electric charge. This can stabilize the electroweak vacuum without invoking new physics at very high energies, which would give an unnaturally large contribution to the Higgs mass. We also show that inflation can be obtained via a UV modification of General Relativity.
KW - Large Hadron Collider
KW - Higgs boson
KW - Inflation
U2 - 10.1016/j.physletb.2016.02.057
DO - 10.1016/j.physletb.2016.02.057
M3 - Journal article
VL - 755
SP - 469
EP - 474
JO - Physics Letters B
JF - Physics Letters B
SN - 0370-2693
ER -