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Models based on Universal Extra Dimensions predict Kaluza-Klein (KK) excitations of all Standard Model (SM) particles. We examine the pair production of KK excitations of top- and bottom-quarks at the Large Hadron Collider. Once produced,…

High Energy Physics - Phenomenology · Physics 2014-11-20 Debajyoti Choudhury , Anindya Datta , Kirtiman Ghosh

Models of Universal Extra Dimensions (UED) at the TeV scale lead to the presence of Kaluza Klein (KK) excitations of the ordinary fermions and bosons of the Standard Model that may be observed at hadron and lepton colliders. A conserved…

High Energy Physics - Phenomenology · Physics 2008-11-26 Nausheen R. Shah , Carlos E. M. Wagner

We discuss the collider phenomenology of the model of Minimal Universal Extra Dimensions (MUED) at the Large hadron Collider (LHC). We derive analytical results for all relevant strong pair-production processes of two level 1 Kaluza-Klein…

High Energy Physics - Phenomenology · Physics 2018-04-04 Jyotiranjan Beuria , AseshKrishna Datta , Dipsikha Debnath , Konstantin T. Matchev

We present an implementation of the model of minimal universal extra dimensions (MUED) in CalcHEP/CompHEP. We include all level-1 and level-2 Kaluza-Klein (KK) particles outside the Higgs sector. The mass spectrum is automatically…

High Energy Physics - Phenomenology · Physics 2014-11-20 AseshKrishna Datta , Kyoungchul Kong , Konstantin T. Matchev

Minimal universal extra dimensions (mUED) is often thought to predict that the lightest Kaluza-Klein particle (LKP) is the Kaluza-Klein gauge boson B^1, leading to conventional missing energy signals at colliders and WIMP dark matter. In…

High Energy Physics - Phenomenology · Physics 2008-11-26 Jose A. R. Cembranos , Jonathan L. Feng , Louis E. Strigari

In this proceeding, the phenomenology of Universal Extra Dimensions (UED), in which all the Standard Model fields propagate, is explored. We focus on models with one universal extra dimension, compactified on an $S_1/Z_2$ orbifold. We…

High Energy Physics - Phenomenology · Physics 2009-10-09 Kyoungchul Kong , Konstantin T. Matchev

Universal Extra Dimensions (UEDs) with compactification radius near the TeV scale provide interesting phenomenology at future colliders. The collider signals of the first Kaluza-Klein (KK) level are very similar to those of a supersymmetric…

High Energy Physics - Phenomenology · Physics 2011-03-23 Hsin-Chia Cheng

In models with universal extra dimensions (i.e. in which all Standard Model fields, including fermions, propagate into compact extra dimensions) momentum conservation in the extra dimensions leads to the conservation of Kaluza--Klein (KK)…

High Energy Physics - Phenomenology · Physics 2008-11-26 Geraldine Servant , Tim M. P. Tait

We explicitly show that split-universal extra dimension (split-UED), a recently suggested extension of universal extra dimension (UED) model, can nicely explain recent anomalies in cosmic-ray positrons and electrons observed by PAMELA and…

High Energy Physics - Phenomenology · Physics 2014-11-18 Chuan-Ren Chen , Mihoko M. Nojiri , Seong Chan Park , Jing Shu , Michihisa Takeuchi

In the 'fat-brane' realization of Universal Extra Dimension (UED) models, the gravity mediated decays of Kaluza-Klein (KK) excitations of the Standard Model (SM) particles offer interesting collider signals. Colored level-1 KK-particles…

High Energy Physics - Phenomenology · Physics 2018-11-28 Kirtiman Ghosh , Durmus Karabacak , S. Nandi

We propose a simple extension of the minimal universal extra dimension (UED)model by introducing a small curvature. The model is formulated as a small anti-de Sitter curvature limit of the five-dimensional standard model (SM) in the…

High Energy Physics - Phenomenology · Physics 2009-11-06 Nobuchika Okada , Toshifumi Yamada

Generically, universal extra dimension (UED) extensions of the standard model predict the stability of the lightest Kaluza-Klein (KK) particle and hence provide a dark matter candidate. For UED scenarios with one extra dimension, we…

High Energy Physics - Phenomenology · Physics 2008-11-26 Thomas Flacke , David W. Maybury

We investigate the collider implications of Split Universal Extra Dimensions. The non-vanishing fermion mass in the bulk, which is consistent with the KK-parity, largely modifies the phenomenology of Minimal Universal Exta Dimensions. We…

High Energy Physics - Phenomenology · Physics 2014-11-20 Kyoungchul Kong , Seong Chan Park , Thomas G. Rizzo

In this letter, we present LHC limits on the minimal universal extra dimension (MUED) model from LHC Run 1 data and current limits from searches of the ongoing Run 2. Typical collider signals of the Kaluza-Klein (KK) states mimic generic…

High Energy Physics - Phenomenology · Physics 2017-06-19 Nicolas Deutschmann , Thomas Flacke , Jong Soo Kim

The current status of `fat-brane' minimal Universal Extra Dimensions (fat-mUED) is studied in the light of ATLAS experiment's recent reports. At the Large Hadron Collider (LHC) color charged first level Kaluza-Klein (KK) particles (first…

High Energy Physics - Phenomenology · Physics 2023-09-04 Esra Akyumuk , Durmus Karabacak

Theories with extra dimensions of inverse TeV size (or larger) predict a multitude of signals which can be searched for at present and future colliders. In this paper, we review the different phenomenological signatures of a particular…

High Energy Physics - Phenomenology · Physics 2009-11-11 Cosmin Macesanu

In universal extra dimension (UED) models with one compactified extra dimension, a Z_2 symmetry, termed KK-parity, ensures the stability of the lightest Kaluza-Klein particle (LKP). This symmetry leads to two fixed points. In non-minimal…

High Energy Physics - Phenomenology · Physics 2013-07-31 Anindya Datta , Ujjal Kumar Dey , Amitava Raychaudhuri , Avirup Shaw

In models with universal extra dimensions (UED), the lightest Kaluza-Klein excitation of neutral electroweak gauge bosons is a stable, weakly interacting massive particle and thus is a candidate for dark matter thanks to Kaluza-Klein…

High Energy Physics - Phenomenology · Physics 2017-04-13 Thomas Flacke , Dong Woo Kang , Kyoungchul Kong , Gopolang Mohlabeng , Seong Chan Park

Kaluza-Klein (KK) parity can be violated in five-dimensional universal extra dimensional model with boundary-localized (kinetic or mass) terms (BLTs) at the fixed points of $S^1/Z_2$ orbifold. In this framework we study the resonant…

High Energy Physics - Phenomenology · Physics 2015-02-02 Avirup Shaw

Although they do not address the hierarchy problem, models with Universal Extra Dimensions have attracted a lot of attention as simple benchmark models characterized by small mass splittings and a dark matter WIMP played by the Lightest…

High Energy Physics - Phenomenology · Physics 2015-06-11 Geraldine Servant