Results 21 to 30 of about 4,931 (133)

Minimally extended SILH

Journal of High Energy Physics, 2017
Higgs boson compositeness is a phenomenologically viable scenario addressing the hierarchy problem. In minimal models, the Higgs boson is the only degree of freedom of the strong sector below the strong interaction scale.
Mikael Chala, Gauthier Durieux, Christophe Grojean, Leonardo de Lima, Oleksii Matsedonskyi   +4 more
doaj   +1 more source

Ultra Minimal Technicolor and its Dark Matter TIMP [PDF]

, 2008
We introduce an explicit model with technifermion matter transforming according to multiple representations of the underlying technicolor gauge group. The model features simultaneously the smallest possible value of the naive S parameter and the smallest
Ryttov, Thomas A., Sannino, Francesco
core   +2 more sources

Quest for the Dynamical Origin of Mass - An LHC perspective from Sakata, Nambu and Maskawa [PDF]

, 2009
I review the dynamical symmetry breaking (DSB) approach to the Origin of Mass, which is traced back to the original (2008 Nobel prize) work of Nambu based on the BCS analogue of superconductor where mass of nucleon (then elementary particle) arises due ...
Yamawaki, Koichi
core   +1 more source

Searches for vector-like quarks at future colliders and implications for composite Higgs models with dark matter

Journal of High Energy Physics, 2018
Many composite Higgs models predict the existence of vector-like quarks with masses outside the reach of the LHC, e.g. m Q ≳ 2 TeV, in particular if these models contain a dark matter candidate.
Mikael Chala, Ramona Gröber, Michael Spannowsky   +2 more
doaj   +1 more source

The W boson mass weighs in on the non-standard Higgs

Physics Letters B, 2022
We consider the implications of the CDF collaboration high-precision measurement of the W boson mass on models with a non-standard Higgs. We show that this requires an enhancement of more than 5% in the non-standard Higgs coupling to the gauge bosons ...
Giacomo Cacciapaglia, Francesco Sannino
doaj   +1 more source

Minimal Flavor Constraints for Technicolor [PDF]

, 2009
We analyze the constraints on the the vacuum polarization of the standard model gauge bosons from a minimal set of flavor observables valid for a general class of models of dynamical electroweak symmetry breaking. We will show that the constraints have a
Bona M., Catterall S., Del Debbio L., Gerard J. M., Hietanen A. J., Nardi E.   +5 more
core   +3 more sources

Composite Higgs to two Photons and Gluons [PDF]

, 2011
We introduce a simple framework to estimate the composite Higgs boson coupling to two-photon in Technicolor extensions of the standard model. The same framework allows us to predict the composite Higgs to two-gluon process.
Alwall J., Dietrich D. D., FRANCESCO SANNINO, Gunion J. F., Hietanen A. J., Sannino F., TUOMAS HAPOLA   +6 more
core   +2 more sources

Electroweak symmetry breaking and collider signatures in the next-to-minimal composite Higgs model

Journal of High Energy Physics, 2017
We conduct a detailed numerical analysis of the composite pseudo-Nambu-Goldstone Higgs model based on the next-to-minimal coset SO(6)/SO(5) ≅ SU(4)/Sp(4), featuring an additional SM singlet scalar in the spectrum, which we allow to mix with the Higgs ...
Christoph Niehoff, Peter Stangl, David M. Straub   +2 more
doaj   +1 more source

Unnatural Origin of Fermion Masses for Technicolor [PDF]

, 2009
We explore the scenario in which the breaking of the electroweak symmetry is due to the simultaneous presence and interplay of a dynamical sector and an unnatural elementary Higgs.
A Barroso, A Belyaev, A Doff, A Kagan, A Kagan, A Kagan, A Kagan, AJ Hietanen, AJ Hietanen, ALEPH, DELPHI and L3 collaborations, AR Zerwekh, BA Dobrescu, C Amsler, CD Carone, CD Carone, CD Carone, CD Carone, CT Hill, DD Dietrich, DD Dietrich, DD Dietrich, DD Dietrich, E Eichten, EH Simmons, F Sannino, F Sannino, F Sannino, F Sannino, Francesco Sannino, H Georgi, JM Cline, K Kainulainen, Kimmo Tuominen, L Debbio Del, L Debbio Del, L Susskind, M Dine, M Dine, M Dine, M Jarvinen, M Jarvinen, Matti Antola, Matti Heikinheimo, ME Peskin, ME Peskin, O Antipin, O Antipin, PM Ferreira, R Foadi, R Foadi, R Foadi, R Foadi, R Foadi, R Sekhar Chivukula, R Sundrum, RS Chivukula, S Catterall, S Catterall, S Dimopoulos, S Samuel, S Weinberg, SB Gudnason, SB Gudnason, SB Gudnason, SR Coleman, T Appelquist, T Appelquist, T DeGrand, T Inami, TA Ryttov, TA Ryttov, TA Ryttov, V Hemmige, Y Shamir, Z Fodor   +74 more
core   +2 more sources

The LHC potential of vector-like quark doublets

Journal of High Energy Physics, 2018
The existence of new vector-like quarks is often predicted by models of new physics beyond the Standard Model, and the development of discovery strategies at colliders is the object of an intense effort from the high-energy community.
Giacomo Cacciapaglia, Aldo Deandrea, Naveen Gaur, Daisuke Harada, Yasuhiro Okada, Luca Panizzi   +5 more
doaj   +1 more source