Results 121 to 130 of about 66,560 (217)

Impact of new experimental data on the C2HDM: the strong interdependence between LHC Higgs data and the electron EDM

Journal of High Energy Physics
The complex two-Higgs doublet model (C2HDM) is one of the simplest extensions of the Standard Model with a source of CP-violation in the scalar sector. It has a $${\mathbb{Z}}_{2}$$ symmetry, softly broken by a complex coefficient. There are four ways to
Thomas Biekötter, Duarte Fontes, Margarete Mühlleitner, Jorge C. Romão, Rui Santos, João P. Silva   +5 more
doaj   +1 more source

Constraining the Higgs trilinear coupling from an SU(2) quadruplet with bounded-from-below conditions

Journal of High Energy Physics
Integrating out a heavy scalar can cause the Higgs trilinear coupling to deviate from its Standard Model value: a good example is provided by an SU(2) quadruplet. Constraints on the full theory, however, can limit the size of the deviation.
K. Kannike
doaj   +1 more source

Effective 2HDM Yukawa interactions and a strong first-order electroweak phase transition

Journal of High Energy Physics
The top quark as the heaviest particle in the Standard Model (SM) defines an important mass scale for Higgs physics and the electroweak scale itself. It is therefore a well-motivated degree of freedom which could reveal the presence of new interactions ...
Anisha, Duarte Azevedo, Lisa Biermann, Christoph Englert, Margarete Mühlleitner   +4 more
doaj   +1 more source

Quantum Corrections to Multi-Quanta Higgs-Bags in the Standard Model [PDF]

, 2009
Marcos P. Crichigno, Edward Shuryak
openalex   +1 more source

Sensitivity to triple Higgs couplings via di-Higgs production in the RxSM at the (HL-)LHC and future e + e − colliders

Journal of High Energy Physics
The real Higgs singlet extension of the Standard Model (SM) without Z 2 symmetry, the RxSM, is the simplest extension of the SM that features a First Order Electroweak Phase Transition (FOEWPT) in the early universe. The FOEWPT is one of the requirements
F. Arco, S. Heinemeyer, M. Mühlleitner, A. Parra Arnay, N. Rivero González, A. Verduras Schaeidt   +5 more
doaj   +1 more source

Towards systematic exploration of multi-Higgs-doublet models

, 2015
4 pages, 1 figure; talk given at the Toyama International Workshop on Higgs as a Probe of New Physics, 11-15 February ...
openaire   +2 more sources

Type-II Seesaw Higgs triplet productions and decays at the LHC

Journal of High Energy Physics
The Type-II Seesaw Model provides an attractive scenario to account for Majorana-neutrino masses. Its extended Higgs sector, if sufficiently light, can have a rich and distinctive phenomenology at the LHC while yielding automatically an essentially ...
Otilia A. Ducu, Ana E. Dumitriu, Adam Jinaru, Romain Kukla, Emmanuel Monnier, Gilbert Moultaka, Alexandra Tudorache, Hanlin Xu   +7 more
doaj   +1 more source

Family symmetries and alignment in multi-Higgs doublet models

Physics Letters B, 2011
The exact alignment of the Yukawa structures on multi-Higgs doublet models provides cancellation of tree-level flavour changing couplings of neutral scalar fields. We show that family symmetries can provide a suitable justification for the Yukawa alignment.
openaire   +2 more sources

Symmetries and observable parameters of multi-Higgs-doublet models

Physics Letters B, 1995
Abstract We investigate the symmetries of the Yukawa and the Higgs sectors in multi-Higgs-doublet standard models. We extend a method that was originally formulated for counting the observable parameters of the Yukawa sector of the standard model to multi-Higgs-doublet models.
openaire   +1 more source

Multi-Higgs doublet model: Can it account for ℓ+ℓ−γγ events? [PDF]

, 1994
Gorazd Cvetič, M. Nowakowski, Y.L. Wu
openalex   +1 more source