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We investigate singlet scalar dark matter (DM) candidate in a left-right symmetric gauge model with two Higgs bidoublets (2HBDM) in which the stabilization of the DM particle is induced by the discrete symmetries P and CP. According to the…

High Energy Physics - Phenomenology · Physics 2010-12-13 Wan-Lei Guo , Yue-Liang Wu , Yu-Feng Zhou

In this work, we study the constraints on the scenario of light stops and sbottoms in the next-to-minimal supersymmetric standard model (NMSSM), especially by a 125 GeV Higgs boson discovery and the LHC bounds on supersymmetry. The…

High Energy Physics - Phenomenology · Physics 2013-05-09 Xiao-Jun Bi , Qi-Shu Yan , Peng-Fei Yin

The recent WMAP data provide a rather restricted range of the Cold Dark Matter (CDM) density $ \Omega_{CDM} h^2 $ of unprecedented accuracy. We combine these new data along with data from BNL E821 experiment measuring $ {(g_{\mu}-2)}$, $…

High Energy Physics - Phenomenology · Physics 2008-11-26 A. B. Lahanas , D. V. Nanopoulos

We consider a minimal renormalizable and gauge invariant dark matter (DM) model, in which the singlet fermion DM has only axial couplings to a new pseudoscalar mediator. The mixing between the pseudoscalar mediator and the standard model…

High Energy Physics - Phenomenology · Physics 2017-04-12 Seungwon Baek , P. Ko , Jinmian Li

In this work, we study the direct-detection constraints of light dark matter in the next-to minimal supersymmetric standard model (NMSSM) with non-universal Higgs masses (NUHM), especially the correlation between higgsino asymmetry and…

High Energy Physics - Phenomenology · Physics 2021-05-26 Kun Wang , Jingya Zhu , Quanlin Jie

We investigate the capability of directional detectors to probe neutralino dark matter in the Minimal Supersymmetric Standard Model and the Next-to-Minimal Supersymmetric Standard Model with parameters defined at the weak scale. We show…

High Energy Physics - Phenomenology · Physics 2012-04-12 D. Albornoz Vásquez , G. Bélanger , J. Billard , F. Mayet

Searches for the Minimal Supersymmetric Standard Model (MSSM) Higgs bosons are among the most promising channels for exploring new physics at the Tevatron. In particular, interesting regions of large $\tan \beta$ and small $m_A$ are probed…

High Energy Physics - Phenomenology · Physics 2008-11-26 Marcela Carena , Dan Hooper , Peter Skands

We determine the prospects for direct and indirect detection of thermal relic neutralinos in supersymmetric theories with multi-TeV squarks and sleptons. We consider the concrete example of the focus point region of minimal supergravity,…

High Energy Physics - Phenomenology · Physics 2014-10-01 Patrick Draper , Jonathan Feng , Philipp Kant , Stefano Profumo , David Sanford

A new set of supersymmetric benchmark scenarios has recently been proposed in the context of the constrained MSSM (CMSSM) with universal soft supersymmetry-breaking masses, taking into account the constraints from LEP, $b \to s \gamma$ and…

The unfortunate case where the Large Hadron Collider (LHC) fails to discover physics Beyond the Standard Model (BSM) is sometimes referred to as the "Nightmare scenario" of particle physics. We study the consequences of this hypothetical…

High Energy Astrophysical Phenomena · Physics 2012-01-05 Gianfranco Bertone , Daniel Cumberbatch , Roberto Ruiz de Austri , Roberto Trotta

The non-observation of dark matter (DM) by direct detection experiments suggests that any new interaction of DM with the Standard Model (SM) should be very weak. One of the simplest scenarios to achieve this is a dark sector that is charged…

High Energy Physics - Phenomenology · Physics 2019-07-26 Patrick Foldenauer

{\tenrm The possibility of detecting supersymmetric dark matter is examined within the framework of the minimal supergravity model (MSGM), where the $\tilde{Z}_{1}$ is the LSP for almost the entire parameter space. A brief discussion is…

High Energy Physics - Phenomenology · Physics 2009-09-25 R. Arnowitt , Pran Nath

A comologically stable neutral component from a nearly pure $SU(2)$ doublet, with a mass $\sim$1.1 TeV, is one appealing candidate for dark matter (DM) consistent with all direct dark matter searches. We have explored this possibility in…

High Energy Physics - Phenomenology · Physics 2021-01-27 Antonio Delgado , Mariano Quirós

We investigate a previously overlooked bottom quark contribution to the spin-dependent cross section for Dark Matter(DM) scattering from the nucleon. While the mechanism is relevant to any supersymmetric extension of the Standard Model, for…

High Energy Physics - Phenomenology · Physics 2016-03-28 Jinmian Li , Anthony W. Thomas

The Lightest Supersymmetric Particle (LSP) makes a good Dark Matter (DM) candidate, since its relic density quite naturally comes out close to the cosmologically required value. This is true even in minimal Supergravity models with…

High Energy Physics - Phenomenology · Physics 2009-09-25 M. Drees

Given the fact that the relatively light Higgsino mass $\mu$ favored in natural supersymmetry usually results in a sizable scattering cross section between the neutralino dark matter and the nucleon, we study the impact of the recently…

High Energy Physics - Phenomenology · Physics 2017-11-06 Junjie Cao , Yangle He , Liangliang Shang , Wei Su , Peiwen Wu , Yang Zhang

Dark matter could emerge along with the Higgs as a composite pseudo-Nambu-Goldstone boson $\chi$ with decay constant $f\sim \mathrm{TeV}$. This type of WIMP is especially compelling because its leading interaction with the Standard Model,…

High Energy Physics - Phenomenology · Physics 2018-12-20 Reuven Balkin , Maximilian Ruhdorfer , Ennio Salvioni , Andreas Weiler

The direct-search experiment for dark matter performed by the CDMS II Collaboration has observed two candidate events. Although these events cannot be interpreted as significant evidence for the presence of weakly interacting massive…

High Energy Physics - Phenomenology · Physics 2010-05-07 Xiao-Gang He , Tong Li , Xue-Qian Li , Jusak Tandean , Ho-Chin Tsai

The Standard Model of particle physics has been strengthened by the recent discovery of the long-awaited Higgs boson. The standard cosmological model has met the challenge of the high precision observations in cosmology and astroparticle…

High Energy Physics - Phenomenology · Physics 2013-12-03 Jonathan Da Silva

We discuss simple extensions of the Standard Model featuring a (fermionic) stable DM candidate interacting with SM fermions through a $Z^{'}$ mediator. These kind of models offer a wide phenomenology but result, at the same time,…

High Energy Physics - Phenomenology · Physics 2015-10-09 Giorgio Arcadi , Yann Mambrini , Mathias Pierre