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A fifth force, of technicolor type, responsible for breaking the electroweak theory is an intriguing extension of the Standard Model. Recently new theories have been shown to feature walking dynamics for a very low number of techniflavors…

High Energy Physics - Phenomenology · Physics 2007-05-23 Sven Bjarke Gudnason , Chris Kouvaris , Francesco Sannino

We describe a class of models of electroweak symmetry breaking that involves strong dynamics and top quark condensation. A new scheme based upon a seesaw mechanism appears particularly promising. Various implications for the first-stage…

High Energy Physics - Phenomenology · Physics 2009-10-31 Christopher T. Hill

The ultra-relativistic heavy-ion programs at the Relativistic Heavy Ion Collider and the Large Hadron Collider have evolved into a phase of quantitative studies of Quantum Chromodynamics at very high temperatures. The charm and bottom…

Nuclear Experiment · Physics 2020-01-08 Xin Dong , Yen-jie Lee , Ralf Rapp

We study the possibility of baryogenesis in the case of supersymmetry breaking with large mixing between the right-handed scalar charm and right-handed scalar top or right-handed scalar up and right-handed scalar top squarks resulting in…

High Energy Physics - Phenomenology · Physics 2016-08-24 Mihir P. Worah

We investigate the heavy flavor dynamics in the quark-gluon plasma (QGP) medium created in p-Pb collisions at the CERN Large Hadron Collider (LHC). In the (3+1)-dimensional viscous hydrodynamics model describing QGP medium, the dynamics of…

We propose a supersymmetric technicolor model in which the electroweak symmetry breaking is communicated to the quarks and leptons by technicolored $SU(2)_W$-singlet scalars. When the technifermions condense, the quarks and leptons of the…

High Energy Physics - Phenomenology · Physics 2008-12-22 Bogdan A. Dobrescu

We search for the technicolor process ppbar -> rho_T/omega_T ->W+pi_T in events containing one electron and two jets, in data corresponding to an integrated luminosity of 390 pb-1, recorded by the D0 experiment at the Fermilab Tevatron.…

High Energy Physics - Experiment · Physics 2008-11-26 D0 Collaboration , V. Abazov

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. We introduce a low energy effective Lagrangian and…

High Energy Physics - Phenomenology · Physics 2014-11-20 M. Antola , M. Heikinheimo , F. Sannino , K. Tuominen

We analyze electroweak baryogenesis in supersymmetric theories with flavor-dependent CP-violating phases. We generalize the standard approach to include the flavor dependence of the CP-violating sources and obtain an analytical approximate…

High Energy Physics - Phenomenology · Physics 2009-11-07 D. Delepine , R. Gonzalez Felipe , S. Khalil , A. M. Teixeira

We argue that a strongly first order electroweak phase transition is natural in the presence of strong symmetry-breaking interactions, such as technicolor. We demonstrate this using an effective linear scalar theory of the symmetry-breaking…

High Energy Physics - Phenomenology · Physics 2009-10-28 Thomas Appelquist , Myckola Schwetz , Stephen B. Selipsky

We consider extra dimensional descriptions of models where there are two separate strongly interacting sectors contributing to electroweak symmetry breaking (``topcolor'' type models). In the extra dimensional picture there would be two…

High Energy Physics - Phenomenology · Physics 2009-09-17 Giacomo Cacciapaglia , Csaba Csaki , Christophe Grojean , Matthew Reece , John Terning

Several phenomenologically viable walking technicolor models have been proposed recently. I demonstrate that these models can have first order electroweak phase transitions, which are sufficiently strong for electroweak baryogenesis. Strong…

High Energy Physics - Phenomenology · Physics 2015-05-20 Matti Jarvinen

We perform an analysis of the behaviour of the electroweak phase transition in the Minimal Supersymmetric Standard Model, in the presence of light stops. We show that, in previously unexplored regions of parameter space, the order parameter…

High Energy Physics - Phenomenology · Physics 2008-11-26 M. Carena , M. Quiros , C. E. M. Wagner

The dynamical origin of electroweak symmetry breaking is an open question with many possible theoretical explanations. Strongly coupled systems predicting the Higgs boson as a bound state of a new gauge-fermion interaction form one class of…

High Energy Physics - Lattice · Physics 2015-10-16 A. Hasenfratz , R. C. Brower , C. Rebbi , E. Weinberg , O. Witzel

In strong dynamical schemes for electroweak symmetry breaking the third generation must be treated in a special manner, owing to the heavy top quark. This potentially leads to new flavor physics involving the members of the third generation…

High Energy Physics - Phenomenology · Physics 2009-10-09 G. Buchalla , G. Burdman , C. T. Hill , D. Kominis

We study the phenomenology of a strongly interacting electroweak symmetry breaking sector in which the physics is dominated by spin one resonances. Specifically we will consider an effective description of dynamical symmetry breaking based…

High Energy Physics - Phenomenology · Physics 2007-05-23 S. De Curtis

We show that CP asymmetries in $b\to s$ hadronic decays are potentially affected by the presence of massive color-octet particles strongly coupled to the third generation quarks. Theories with warped extra dimensions provide natural…

High Energy Physics - Phenomenology · Physics 2015-06-25 Gustavo Burdman

The baryon density which may be produced during the electroweak phase transition in supersymmetric models is computed, taking into account the previously neglected effects of transport, strong and weak anomalous fermion number violation,…

High Energy Physics - Phenomenology · Physics 2009-10-28 Patrick Huet , Ann E. Nelson

We examine models where massless chiral fermions with both "electric" and "magnetic" hypercharges could form condensates. When some of the fermions are also electroweak doublets such condensates can break the electroweak gauge symmetry down…

High Energy Physics - Phenomenology · Physics 2011-02-02 Csaba Csaki , Yuri Shirman , John Terning

A summary of precision measurements sensitive to electroweak, QCD and quark-flavour effects performed by the ATLAS Collaboration at the Large Hadron Collider is reported. The measurements are predominantly performed on proton$-$proton…

High Energy Physics - Experiment · Physics 2025-04-16 ATLAS Collaboration