SCOAP3 Repository 7 records found  Search took 0.01 seconds. 
1. Equations of motion, symmetry currents and EFT below the electroweak scale / Helset, Andreas ; Trott, Michael
The low-energy effective field theory is constructed by integrating out Standard Model states with masses proximate to the electroweak scale. [...]
Published in Physics letters B 795 (2019) 606-619 10.1016/j.physletb.2019.06.070
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2. Scattering equations and a new factorization for amplitudes. Part II. Effective field theories / Gomez, Humberto ; Helset, Andreas
We continue the program of extending the scattering equation framework by Cachazo, He and Yuan to a double-cover prescription. [...]
Published in JHEP 1905 (2019) 129 10.1007/JHEP05(2019)129 arXiv:1902.02633
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3. New factorization relations for nonlinear sigma model amplitudes / Bjerrum-Bohr, N. E. J. ; Gomez, Humberto ; Helset, Andreas
We obtain novel factorization identities for nonlinear sigma model amplitudes using a new integrand in the Cachazo-He-Yuan double-cover prescription. [...]
Published in Physical Review D 99 (2019) 10.1103/PhysRevD.99.045009 arXiv:1811.06024
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4. Three-dimensional effective theories for the two Higgs doublet model at high temperature / Gorda, Tyler ; Helset, Andreas ; Niemi, Lauri ; Tenkanen, Tuomas ; et al
Due to the infrared problem of high-temperature field theory, a robust study of the electroweak phase transition (EWPT) requires use of non-perturbative methods. [...]
Published in JHEP 1902 (2019) 081 10.1007/JHEP02(2019)081 arXiv:1802.05056
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5. Nonperturbative Analysis of the Electroweak Phase Transition in the Two Higgs Doublet Model / Andersen, Jens O. ; Gorda, Tyler ; Helset, Andreas ; Niemi, Lauri ; et al
We perform a nonperturbative study of the electroweak phase transition (EWPT) in the two Higgs doublet model (2HDM) by deriving a dimensionally reduced high-temperature effective theory for the model, and matching to known results for the phase diagram of the effective theory. [...]
Published in Physical Review Letters 121 (2018) 10.1103/PhysRevLett.121.191802 arXiv:1711.09849
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6. Gauge Fixing the Standard Model Effective Field Theory / Helset, Andreas ; Paraskevas, Michael ; Trott, Michael
We gauge-fix the standard model effective field theory in a manner invariant under background-field gauge transformations using a geometric description of the field connections..
Published in Physical Review Letters 120 (2018) 10.1103/PhysRevLett.120.251801 arXiv:1803.08001
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7. On interference and non-interference in the SMEFT / Helset, Andreas ; Trott, Michael
We discuss interference in the limit m ^ W 2 / s → 0 $$ {\widehat{m}}_W^2/s\to 0 $$ in the Standard Model Effective Field Theory (SMEFT). [...]
Published in JHEP 1804 (2018) 038 10.1007/JHEP04(2018)038 arXiv:1711.07954
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