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We study the effects of a fourth generation t' quark in various extensions of the standard model. In the Randall-Sundrum model, the decay t'--> t Z has a large branching ratio that could be detected at the Large Hadron Collider (LHC). We…

High Energy Physics - Phenomenology · Physics 2009-09-02 Erin De Pree , Gardner Marshall , Marc Sher

The dynamics of a stabilized radion in the Randall-Sundrum model (RS) with two branes is investigated, and the effects of the radion on electroweak precision observables are evaluated. The radius is assumed to be stabilized using a bulk…

High Energy Physics - Theory · Physics 2009-09-25 Csaba Csaki , Michael L. Graesser , Graham D. Kribs

Dirac neutrinos arising from gauged discrete symmetry \`a la Krauss-Wilczek are implemented in the minimal custodial Randall-Sundrum model. In the case of a normal hierarchy, all lepton masses and mixing pattern can be naturally reproduced…

High Energy Physics - Phenomenology · Physics 2010-06-30 Jackson M. S. Wu

Several relevant thermodynamic observables obtained within the (2+1) flavor and spin zero NJL and PNJL models with inclusion of the 't Hooft determinant and $8q$ interactions are compared with lattice-QCD (lQCD) results. In the case that a…

High Energy Physics - Phenomenology · Physics 2012-11-13 B. Hiller , J. Moreira , A. A. Osipov , A. H. Blin

We study the decay $\bar B\to X_s\gamma$ in Randall-Sundrum models with an IR-localised bulk Higgs. The two models under consideration are a minimal model as well as a model with a custodial protection mechanism. We include the effects of…

High Energy Physics - Phenomenology · Physics 2015-12-22 P. Moch , J. Rohrwild

We describe the phenomenology of the flavour changing neutral current sector of a supersymmetric model, invariant under the T' discrete flavour group. This model has been proposed in Ref.[1] and describes realistic leptonic and hadronic…

High Energy Physics - Phenomenology · Physics 2015-05-30 Luca Merlo , Stefano Rigolin , Bryan Zaldívar

Flavor changing neutral current $|\Delta B|=|\Delta S|=1$ processes are sensitive to possible new physics at the electroweak scale and beyond, providing detailed information about flavor, chirality and Lorentz structure. Recently the LHCb…

High Energy Physics - Phenomenology · Physics 2014-09-24 Gudrun Hiller , Martin Schmaltz

We analyze the importance of flavor effects in models in which leptogenesis proceeds via the decay of Majorana electroweak triplets. We find that depending on the relative strengths of gauge and Yukawa reactions the $B-L$ asymmetry can be…

High Energy Physics - Phenomenology · Physics 2010-10-27 D. Aristizabal Sierra , Jernej F. Kamenik , Miha Nemevsek

A search for narrow resonances in dielectron and dimuon invariant mass spectra has been performed using data obtained from proton-proton collisions at sqrt(s) = 13 TeV collected with the CMS detector. The integrated luminosity for the…

High Energy Physics - Experiment · Physics 2017-03-20 CMS Collaboration

We present suppression predictions from our pQCD-based energy loss model, which receives small system size corrections, for high-$p_T$ $\pi$, $D$ and $B$ meson $R_{AB}$ as a function of centrality, flavor, $\sqrt{s_{NN}}$, and $p_T$ from…

High Energy Physics - Phenomenology · Physics 2025-11-11 Coleridge Faraday , W. A. Horowitz

The Little Flavor model is a close cousin of the Little Higgs theory which aims to generate flavor structure around TeV scale. While the original Little Flavor only included the quark sector, here we build the lepton part of the Little…

High Energy Physics - Phenomenology · Physics 2016-01-25 Sichun Sun

The Randall-Sundrum (RS) framework has a built in protection against flavour violation, but still generically suffers from little CP problems. The most stringent bound on flavour violation is due to epsilon_K, which is inversely…

High Energy Physics - Phenomenology · Physics 2010-05-28 Oram Gedalia , Gino Isidori , Gilad Perez

Experimental data on inclusive cross sections of particles produced in high energy proton-(anti)proton collisions at ISR, RHIC, and Tevatron are analyzed in the framework of $z$-scaling. New features of the scaling function $\psi(z)$ are…

High Energy Physics - Phenomenology · Physics 2011-03-28 I. Zborovsky , M. V. Tokarev

We implement Dirac neutrinos in the minimal custodial Randall-Sundrum setting via the Krauss-Wilczek mechanism. We demonstrate by giving explicit lepton mass matrices that with neutrinos in the normal hierarchy, lepton mass and mixing…

High Energy Physics - Phenomenology · Physics 2010-01-07 We-Fu Chang , John N. Ng , Jackson M. S. Wu

The flavour changing decays of the top quark are severely suppressed in the Standard Model by virtue of the Glashow-Iliopoulos-Maiani mechanism. Many beyond Standard Model extensions predict the decay rates at a level that is observable in…

High Energy Physics - Phenomenology · Physics 2016-10-03 Ujjal Kumar Dey , Tapoja Jha

We examine the reach at hadron colliders for the lightest warped Kaluza-Klein (KK) graviton G_1 in the Z(->l+l-) Z(->nu nu) channel, l=e,mu, within Randall-Sundrum models of hierarchy and flavor where the Standard Model gauge fields and…

High Energy Physics - Phenomenology · Physics 2014-05-21 Chien-Yi Chen , Hooman Davoudiasl , Doojin Kim

Both charged hadrons and D mesons are considered to be excellent probes of QCD matter created in ultra relativistic heavy ion collisions. Surprisingly, recent experimental observations at LHC show the same jet suppression for these two…

Nuclear Theory · Physics 2014-02-05 Magdalena Djordjevic

We introduce and analyze the new range-separated (RS) canonical/Tucker tensor format which aims for numerical modeling of the 3D long-range interaction potentials in multi-particle systems. The main idea of the RS tensor format is the…

Numerical Analysis · Mathematics 2016-10-11 Peter Benner , Venera Khoromskaia , Boris N. Khoromskij

One possible extension of the Standard Model scalar sector includes SU(2)_L doublet scalars that are color octets rather than singlets. We focus on models in which the couplings to fermions are consistent with the principle of minimal…

High Energy Physics - Phenomenology · Physics 2009-07-24 Chul Kim , Thomas Mehen

A search is performed for the production of heavy resonances decaying into top-antitop quark pairs in proton-proton collisions at sqrt(s) = 8 TeV. Data used for the analyses were collected with the CMS detector and correspond to an…

High Energy Physics - Experiment · Physics 2016-01-18 CMS Collaboration