Results 91 to 100 of about 48,672 (174)

Δ(27) flavor singlet-triplet Higgs model for fermion masses and mixings

Nuclear Physics B, 2019
We propose a multiscalar singlet extension of the singlet-triplet Higgs model capable of explaining the SM fermion mass spectrum and mixing parameters.
A.E. Cárcamo Hernández, Juan Carlos Gómez-Izquierdo, Sergey Kovalenko, Myriam Mondragón   +3 more
doaj   +1 more source

A U(1) non-universal anomaly-free model with three Higgs doublets and one singlet scalar field

, 2017
The flavor problem, neutrino physics and the fermion mass hierarchy are important motivations to extend the Standard Model into the TeV scale. A new family non-universal extension is presented with three Higgs doublets, one Higgs singlet and one scalar ...
Mantilla, S. F., Martinez, R.
core   +1 more source

Flavor in SU(5)$SU(5)$ Finite Grand Unified Models

Fortschritte der Physik, Volume 72, Issue 12, December 2024.
Abstract Four SU(5)N=1$SU(5) \nobreakspace N=1$ supersymmetric models which exhibit S3$S_3$ and/or ZN$Z_N$ symmetries are studied, that are finite to two or all loops, and their corresponding mass matrices. The first is an all‐loop finite model based on an S3×Z3×Z2$S_3\times Z_3\times Z_2$ flavor symmetry, which leads to phenomenologically nonviable ...
Luis Odín Estrada Ramos, Myriam Mondragón, Gregory Patellis, George Zoupanos   +3 more
wiley   +1 more source

Third family hypercharge model for R K ∗ $$ {R}_{K^{\left(\ast \right)}} $$ and aspects of the fermion mass problem

Journal of High Energy Physics, 2018
We present a model to explain LHCb’s recent measurements of R K and R K ∗ $$ {R}_{K^{\left(\ast \right)}} $$ based on an anomaly-free, spontaneously-broken U(1) F gauge symmetry, without any fermionic fields beyond those of the Standard Model (SM).
B. C. Allanach, Joe Davighi
doaj   +1 more source

FCNC top quark decay in the MSSM: a door to SUSY physics in high luminosity colliders?

, 1999
We study the FCNC top quark decays t -> c h in the framework of the MSSM, where h= h^0,H^0,A^0 is any of the supersymmetric neutral Higgs bosons. We include the leading set of SUSY-QCD and SUSY electroweak contributions.
Agashe, Atwood, Bertolini, Bouquet, Brignole, Carena, Carena, Chankowski, Coarasa, Coarasa, Coarasa, Couture, Couture, Dabelstein, Dabelstein, Dabelstein, de Divitiis, Deshpande, Duncan, Duncan, Eilam, Eilam, Ellis, Fritzsch, Gabbiani, Garcia, Grzadkowski, Guasch, Guasch, Haber, Haber, Haber, Haber, Heinemeyer, Hosch, Hou, Jaume Guasch, Joan Solà, Kolda, Lahanas, Li, Li, Lopez, Luke, Mele, Nilles, Spira, Yang, Yang, Yang   +49 more
core   +2 more sources

Trying to understand the Standard Model parameters

, 2003
We stress the importance of the circa 20 parameters in the Standard Model, which are not fixed by the model but only determined experimentally, as a window to the physics beyond the Standard Model.
Buchmüller W, C.D. Froggatt*, Froggatt CD, H.B. Nielsen†   +3 more
core   +1 more source

Lepton non-universality in B decays and fermion mass structure

Journal of High Energy Physics, 2018
We consider the possibility that the neutral-current B anomalies are due to radiative corrections generated by Yukawa interactions of quarks and leptons with new vector-like quark and lepton electroweak doublets and new Standard Model singlet scalars. We
B. Grinstein, S. Pokorski, G. G. Ross
doaj   +1 more source

(De)Constructing a Natural and Flavorful Supersymmetric Standard Model

, 2011
Using the framework of deconstruction, we construct simple, weakly-coupled supersymmetric models that explain the Standard Model flavor hierarchy and produce a flavorful soft spectrum compatible with precision limits.
A Delgado, A DeSimone, A Giveon, A Giveon, A Maloney, AG Cohen, AJ Buras, Andrey Katz, BA Dobrescu, C Csáki, C Csáki, C Csáki, CR Nappi, CT Hill, D Curtin, D Green, D Koschade, Daniel Green, DE Kaplan, GF Giudice, GF Giudice, GR Dvali, H Murayama, HC Cheng, J Barnard, J Fan, JL Evans, K Nakamura, KA Intriligator, L Álvarez-Gaumé, LJ Hall, LJ Hall, M Bona, M Dine, M Dine, M Dine, M Dine, M Dine, M McGarrie, M Schmaltz, MA Luty, N Arkani-Hamed, N Arkani-Hamed, N Arkani-Hamed, N Craig, N Maru, Nathaniel Craig, P Meade, P Meade, R Auzzi, R Auzzi, R Kitano, S Bertolini, S Dimopoulos, S Dimopoulos, S Franco, S Schäfer-Nameki, S Schäfer-Nameki, SR Behbahani, TS Roy, Z Chacko, Z Komargodski, Z Komargodski   +62 more
core   +1 more source

A clockwork solution to the flavor puzzle

Journal of High Energy Physics, 2018
We introduce a set of clockwork models of flavor that can naturally explain the large hierarchies of the Standard Model quark masses and mixing angles.
Rodrigo Alonso, Adrian Carmona, Barry M. Dillon, Jernej F. Kamenik, Jorge Martin Camalich, Jure Zupan   +5 more
doaj   +1 more source

Quark masses and mixings in the RS1 model with a condensing 4th generation

, 2012
We study the hierarchy of quark masses and mixings in a model based on a 5-dimensional spacetime with constant curvature of Randall-Sundrum type with two branes, where the Electroweak Symmetry Breaking is caused dynamically by the condensation of a 4th ...
A Carcamo Hernandez, A Cárcamo, A Lenz, A. E. Cárcamo Hernández, AK Alok, Alfonso R. Zerwekh, BA Dobrescu, C Csáki, Claudio O. Dib, CT Hill, CT Hill, Du D-s, G Branco, G Branco, G Burdman, G Burdman, G Cacciapaglia, G Cacciapaglia, GD Kribs, H Fritzsch, H Fritzsch, H Fritzsch, H Fritzsch, H Fritzsch, H Fritzsch, H Fritzsch, H Fritzsch, H Ishimori, H Nishiura, H-C Cheng, J Erler, JE Kim, K Agashe, K Agashe, K Agashe, K Matsuda, K Nakamura, KS Babu, MA Luty, N Rius, Nicolás A. Neill, R Barbieri, T Gherghetta, WA Bardeen, Xing Z-z, Xing Z-z, Y Bai, Y-F Zhou, Z Berezhiani   +48 more
core   +1 more source