TY - JOUR
T1 - Crunching Dilaton, Hidden Naturalness
AU - Csáki, Csaba
AU - D'Agnolo, Raffaele Tito
AU - Geller, Michael
AU - Ismail, Ameen
N1 - Publisher Copyright:
© 2021 authors.
PY - 2021/3/1
Y1 - 2021/3/1
N2 - We introduce a new approach to the Higgs naturalness problem. The Higgs mixes with the dilaton of a conformal field theory (CFT) sector whose true ground state has a large negative vacuum energy. If the Higgs vacuum expectation value is nonzero and below O(TeV), the CFT admits a second metastable vacuum, where the expansion history of the Universe is conventional. As a result, only Hubble patches with unnaturally small values of the Higgs mass do not immediately crunch. The main experimental prediction of this mechanism is a dilaton in the 0.1-10 GeV range that mixes with the Higgs and can be detected at future colliders and experiments searching for weakly coupled particles.
AB - We introduce a new approach to the Higgs naturalness problem. The Higgs mixes with the dilaton of a conformal field theory (CFT) sector whose true ground state has a large negative vacuum energy. If the Higgs vacuum expectation value is nonzero and below O(TeV), the CFT admits a second metastable vacuum, where the expansion history of the Universe is conventional. As a result, only Hubble patches with unnaturally small values of the Higgs mass do not immediately crunch. The main experimental prediction of this mechanism is a dilaton in the 0.1-10 GeV range that mixes with the Higgs and can be detected at future colliders and experiments searching for weakly coupled particles.
UR - http://www.scopus.com/inward/record.url?scp=85102208061&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.126.091801
DO - 10.1103/PhysRevLett.126.091801
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C2 - 33750171
AN - SCOPUS:85102208061
SN - 0031-9007
VL - 126
JO - Physical Review Letters
JF - Physical Review Letters
IS - 9
M1 - 091801
ER -