SCOAP3 Repository 10 records found  Search took 0.01 seconds. 
1. Higgs Pair Production as a Signal of Enhanced Yukawa Couplings / Bauer, Martin ; Carena, Marcela ; Carmona, Adrián
We present a nontrivial correlation between the enhancement of the Higgs-fermion couplings and the Higgs pair production cross section in two Higgs doublet models with a flavor symmetry, with implications for LHC searches. [...]
Published in Physical Review Letters 121 (2018) 10.1103/PhysRevLett.121.021801 arXiv:1801.00363
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2. Probing the electroweak phase transition via enhanced di-Higgs boson production / Carena, Marcela ; Liu, Zhen ; Riembau, Marc
We consider a singlet extension of the standard model (SM) with a spontaneous Z2 breaking and study the gluon-gluon fusion production of the heavy scalar, with subsequent decay into a pair of SM-like Higgs bosons. [...]
Published in Physical Review D 97 (2018) 10.1103/PhysRevD.97.095032 arXiv:1801.00794
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3. Higgs portals for thermal Dark Matter. EFT perspectives and the NMSSM / Baum, Sebastian ; Carena, Marcela ; Shah, Nausheen ; Wagner, Carlos
We analyze a low energy effective model of Dark Matter in which the thermal relic density is provided by a singlet Majorana fermion which interacts with the Higgs fields via higher dimensional operators. [...]
Published in JHEP 1804 (2018) 069 10.1007/JHEP04(2018)069 arXiv:1712.09873
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4. Challenges and opportunities for heavy scalar searches in the t t ¯ $$ t\overline{t} $$ channel at the LHC / Carena, Marcela ; Liu, Zhen
Heavy scalar and pseudoscalar resonance searches through the gg → S → t t ¯ $$ gg\to S\to t\overline{t} $$ process are challenging due to the peculiar behavior of the large interference effects with the standard model t t ¯ $$ t\overline{t} $$ background. [...]
Published in JHEP 1611 (2016) 159 10.1007/JHEP11(2016)159 arXiv:1608.07282
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5. Flavor from the electroweak scale / Bauer, Martin ; Carena, Marcela ; Gemmler, Katrin
We discuss the possibility that flavor hierarchies arise from the electroweak scale in a two Higgs doublet model, in which the two Higgs doublets jointly act as the flavon. [...]
Published in JHEP 1511 (2015) 016 10.1007/JHEP11(2015)016 arXiv:1506.01719
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6. Higgs production and decay in models of a warped extra dimension with a bulk Higgs / Archer, Paul ; Carena, Marcela ; Carmona, Adrian ; Neubert, Matthias
Warped extra-dimension models in which the Higgs boson is allowed to propagate in the bulk of a compact AdS 5 space are conjectured to be dual to models featuring a partially composite Higgs boson. [...]
Published in JHEP 1501 (2015) 060 10.1007/JHEP01(2015)060 arXiv:1408.5406
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7. Light dark matter, naturalness, and the radiative origin of the electroweak scale / Altmannshofer, Wolfgang ; Bardeen, William ; Bauer, Martin ; Carena, Marcela ; et al
We study classically scale invariant models in which the Standard Model Higgs mass term is replaced in the Lagrangian by a Higgs portal coupling to a complex scalar field of a dark sector. [...]
Published in JHEP 1501 (2015) 032 10.1007/JHEP01(2015)032 arXiv:1408.3429
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8. Minimal composite Higgs models at the LHC / Marcela Carena ; Leandro Da Rold ; Eduardo Pontón
We consider composite Higgs models where the Higgs is a pseudo-Nambu Goldstone boson arising from the spontaneous breaking of an approximate global symmetry by some underlying strong dynamics. [...]
Published in JHEP 1406 (2014) 159 10.1007/JHEP06(2014)159 arXiv:1402.2987
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9. Impersonating the Standard Model Higgs boson: alignment without decoupling / Marcela Carena ; Ian Low ; Nausheen R. Shah ; Carlos E.M. Wagner
In models with an extended Higgs sector there exists an alignment limit, in which the lightest CP-even Higgs boson mimics the Standard Model Higgs. [...]
Published in JHEP 1404 (2014) 015 10.1007/JHEP04(2014)015 arXiv:1310.2248
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10. Exotic leptons: Higgs, flavor and collider phenomenology / Wolfgang Altmannshofer ; Martin Bauer ; Marcela Carena
We study extensions of the standard model by one generation of vector-like leptons with non-standard hypercharges, which allow for a sizable modification of the h  → γγ decay rate for new lepton masses in the 300 GeV-1 TeV range. [...]
Published in JHEP 1401 (2014) 060 10.1007/JHEP01(2014)060 arXiv:1308.1987
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1 Carena, M.
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