Results 81 to 90 of about 1,044 (153)

Higgs production from anomalous gluon dynamics

Journal of High Energy Physics
We present a two-loop analysis of the contributions to Higgs production via gluon-gluon fusion arising from the triple-gluon operator in the Standard Model effective field theory (SMEFT).
Ulrich Haisch
doaj   +1 more source

A Monte Carlo global analysis of the Standard Model Effective Field Theory: the top quark sector

Journal of High Energy Physics, 2019
We present a novel framework for carrying out global analyses of the Standard Model Effective Field Theory (SMEFT) at dimension-six: SMEFiT. This approach is based on the Monte Carlo replica method for deriving a faithful estimate of the experimental and
Nathan P. Hartland, Fabio Maltoni, Emanuele R. Nocera, Juan Rojo, Emma Slade, Eleni Vryonidou, Cen Zhang   +6 more
doaj   +1 more source

Matching for FCNC effects in the flavour-symmetric SMEFT

Journal of High Energy Physics, 2019
We calculate the complete tree and one-loop matching of the dimension-six Standard Model Effective Field Theory (SMEFT) with unbroken U(3)5 flavour symmetry to the operators of the Weak Effective Theory (WET) which are responsible for flavour changing ...
Tobias Hurth, Sophie Renner, William Shepherd   +2 more
doaj   +1 more source

Signs, spin, SMEFT: Sum rules at dimension six [PDF]

, 2022
Grant N. Remmen, Nicholas L. Rodd
openalex   +1 more source

Feasibility of ultrarelativistic bubbles in SMEFT

Physical Review D
A first order electroweak phase transition probes physics beyond the Standard Model on multiple frontiers and therefore is of immense interest for theoretical exploration. We conduct a model-independent study of the effects of relevant dimension 6 and dimension 8 operators, of the Standard Model effective field theory, on electroweak phase transition ...
Upalaparna Banerjee, Sabyasachi Chakraborty, Suraj Prakash, Shakeel Ur Rahaman   +3 more
openaire   +2 more sources

Learning to pinpoint effective operators at the LHC: a study of the t t ¯ b b ¯ $$ \mathrm{t}\overline{\mathrm{t}}\mathrm{b}\overline{\mathrm{b}} $$ signature

Journal of High Energy Physics, 2018
In the context of the Standard Model effective field theory (SMEFT), we study the LHC sensitivity to four fermion operators involving heavy quarks by employing cross section measurements in the t t ¯ b b ¯ $$ t\overline{t}b\overline{b} $$ final state ...
Jorgen D’Hondt, Alberto Mariotti, Ken Mimasu, Seth Moortgat, Cen Zhang   +4 more
doaj   +1 more source

Exact SMEFT formulation and expansion to $$ \mathcal{O} $$(v4/Λ4) [PDF]

, 2020
C. P. Hays, Andreas Helset, A. Martin, Michael Trott   +3 more
openalex   +1 more source

Walls, bubbles and doom — the cosmology of HEFT

Journal of High Energy Physics
As experiment charts new territory at the electroweak scale, the enterprise to characterise all possible theories becomes all the more necessary. In the absence of new particles, this ambitious enterprise is attainable and has led to the Higgs Effective ...
R. Alonso, J.C. Criado, R. Houtz, M. West   +3 more
doaj   +1 more source

Energy-enhanced dimension eight SMEFT effects in VBF Higgs production

Journal of High Energy Physics
We study Higgs boson production via vector boson fusion at the LHC, focusing on the process pp → H + jj and capturing the leading energy-enhanced contributions within the Standard Model Effective Field Theory (SMEFT) up to order 1/Λ4.
Benoît Assi, Adam Martin
doaj   +1 more source

M W helps select Z ' models for b → s ℓ ℓ anomalies. [PDF]

Eur Phys J C Part Fields, 2022
Allanach B, Davighi J.
europepmc   +1 more source