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An extension of the Standard Model to the local gauge group $SU(3)_c\otimes SU(3)_L\otimes U(1)_X$ which is a subgroup of the electroweak-strong unification group $E_6$ is analyzed. The mass scales, the gauge boson masses, and the masses…

High Energy Physics - Phenomenology · Physics 2011-03-23 Luis A. Sanchez , William A. Ponce , R. Martinez

We consider, in the context of the minimal supersymmetric standard model, the case where the gravitino weighs 10^6 GeV or more, which is preferred by various cosmological difficulties associated with unstable gravitinos. Despite the large…

High Energy Physics - Phenomenology · Physics 2015-06-03 Kwang Sik Jeong , Masatoshi Shimosuka , Masahiro Yamaguchi

Some of basic problems in neutrino physics such as new energy scales, the enormous gap between neutrino masses and the lightest charged fermion mass, possible existance of sterile neutrinos in eV mass range are studied in the local gauge…

High Energy Physics - Phenomenology · Physics 2008-11-26 Riazuddin , Fayyazuddin

The complexified gauging of the de Sitter group gives a unified theory for the electroweak and gravitational interactions. The standard spectrum for the electroweak gauge bosons is recovered with the correct mass assignments, following a…

High Energy Physics - Theory · Physics 2009-10-30 Nikolaos A Batakis

We investigate the impact of TeV-scale matter belonging to complete vectorlike multiplets of unified groups on the lightest Higgs boson in the MSSM. We find that consistent with perturbative unification and electroweak precision data the…

High Energy Physics - Phenomenology · Physics 2008-11-26 K. S. Babu , Ilia Gogoladze , Mansoor Ur Rehman , Qaisar Shafi

The possible existence of bulk singlet neutrinos in the scenario with large compactified dimensions and low string scale $M_*$ has important consequences for low-energy observables. We demonstrate that intergenerational mass splitting and…

High Energy Physics - Phenomenology · Physics 2010-04-06 Alon E. Faraggi , Maxim Pospelov

The case for small neutrino mass differences from atmospheric and solar neutrino oscillation experiments has become compelling, but leaves the overall neutrino mass scale m_nu undetermined. The most restrictive limit of m_nu < 0.8 eV arises…

Astrophysics · Physics 2009-11-07 G. G. Raffelt

We consider the possibility that supersymmetry is broken above the inflationary mass scale and that the only "low" energy remnant of supersymmetry is the gravitino with mass of order the EeV scale. The gravitino in this class of models…

High Energy Physics - Phenomenology · Physics 2017-08-09 Emilian Dudas , Yann Mambrini , Keith Olive

We show that in any invisible axion model due to the effects of effective non-renormalizable interactions related to an energy scale near the Peccei-Quinn, grand unification or even the Planck scale, active neutrinos necessarily acquire…

High Energy Physics - Phenomenology · Physics 2009-11-11 Alex G. Dias , V. Pleitez

Neutrino mass generation may affect the basic structure of the electroweak symmetry breaking sector. We consider a broad class of elementary particle theories where neutrinos get mass at a low mass scale. We show how these can be made…

High Energy Physics - Phenomenology · Physics 2007-05-23 F. Bazzocchi , J. W. F. Valle

Based on the observation that K_0(1430) is lighter than its SU_3 counterpart, a_0(1450), we examine the possibility that these particles, together with f_0(1370), f_0(1500) and f_0(1710), fill a tetraquark recurrence of the sub-GeV 0^{++}…

High Energy Physics - Phenomenology · Physics 2008-11-26 L. Maiani , F. Piccinini , A. D. Polosa , V. Riquer

We explore the implications of a 124-126 GeV CP-even Higgs boson on the fundamental parameter space and sparticle spectroscopy of the minimal gauge mediated supersymmetry breaking (mGMSB) scenario. The above mass for the Higgs boson yields…

High Energy Physics - Phenomenology · Physics 2015-06-04 M. Adeel Ajaib , Ilia Gogoladze , Fariha Nasir , Qaisar Shafi

In the original paper entitled, "Masses of Fundamental Particles"(arXiv:1109.3705v5, 10 Feb 2012), not only the masses of fundamental particles including the weak bosons, Higgs boson, quarks, and leptons, but also the mixing angles of…

General Physics · Physics 2014-06-12 Hidezumi Terazawa

In a class of SUSY SO(10) with $SU(2)_L x SU(2)_R x U(1)_{B-L} x SU(3)_C$ $(g_{2L}\neq g_{2R})$ intermediate gauge symmetry, we observe that the prediction on the unification mass $(M_U)$ is unaffected by Planck-scale-induced gravitational…

High Energy Physics - Phenomenology · Physics 2009-10-13 M. K. Parida , B. Purkayastha , C. R. Das , B. D. Cajee

We propose to search for a new type of gravitational wave signature relevant for particle physics models with symmetries broken at vastly different energy scales. The spectrum contains a characteristic double-peak structure consisting of a…

High Energy Physics - Phenomenology · Physics 2023-09-26 Bartosz Fornal , Kassandra Garcia , Erika Pierre

Inspired by the phenomenological constraints, LHC supersymmetry and Higgs searches, dark matter search as well as string model building, we propose the electroweak supersymmetry around the electroweak scale: the squarks and/or gluinos are…

High Energy Physics - Phenomenology · Physics 2015-06-04 Taoli Cheng , Jinmian Li , Tianjun Li , Dimitri V. Nanopoulos , Chunli Tong

We give a detailed renormalization group analysis for the SU(16) grandunified group with general breaking chains in which quarks and leptons transform separately at intermediate energies. Our analysis includes the effects of Higgs bosons.…

High Energy Physics - Phenomenology · Physics 2009-10-22 N. G. Deshpande , E. Keith , Palash B. Pal

We show that sterile neutrinos with masses ~1 eV or larger, as motivated by several short-baseline oscillation anomalies, can be consistent with cosmological constraints if they are charged under a hidden sector force mediated by a light…

High Energy Physics - Phenomenology · Physics 2014-06-16 Basudeb Dasgupta , Joachim Kopp

An electroweak model of SU(3) $\times$ U(1) gauge group is studied. {}From the group theoretical constraint, the symmetry breaking of this model to the standard model occurs at 1.7~TeV or lower. Hence the mass of the new neutral gauge boson…

High Energy Physics - Phenomenology · Physics 2011-07-19 Daniel Ng

We consider electroweak (EW) gauge boson corrections to the masses of pseudoscalar mesons to next to leading order (NLO) in $\alpha_s$ and $1/N_C$. The pion mass shift induced by the $Z$-boson is shown to be $m_{\pi^\pm}-m_{\pi^0} =…

High Energy Physics - Phenomenology · Physics 2023-08-02 Antonio Pich , Arthur Platschorre , Mario Reig
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