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Elastic collisions with relativistic electrons from the blazar's jet can accelerate dark matter (DM) particles in the DM spike surrounding the supermassive black hole at its center. This can allow one to set stringent limits on the…

High Energy Physics - Phenomenology · Physics 2023-07-19 Supritha Bhowmick , Diptimoy Ghosh , Divya Sachdeva

We investigate an extension of the standard model (SM) with a singlet fermionic dark matter (DM) particle which interacts with the SM sector through a real singlet scalar. The presence of a new scalar provides the possibility of generating…

High Energy Physics - Phenomenology · Physics 2015-06-18 Tai Li , Yu-Feng Zhou

Since no direct signs of new physics have been observed so far indirect searches in the Higgs sector have become increasingly important. With the discovered Higgs boson behaving very Standard Model (SM)-like, however, indirect new physics…

High Energy Physics - Phenomenology · Physics 2020-12-02 Julien Baglio , Thi Nhung Dao , Margarete Muhlleitner

The electroweak (EW) sector of the Minimal Supersymmetric Standard Model (MSSM) can account for variety of experimental data. The EW particles with masses of a few hundred GeV evade the LHC searches owing to their small production cross…

High Energy Physics - Phenomenology · Physics 2022-06-08 Manimala Chakraborti , Sven Heinemeyer , Ipsita Saha , Christian Schappacher

The Singlet-Doublet model of dark matter is a minimal extension of the Standard Model with dark matter that is a mixture of a singlet and a non-chiral pair of electroweak doublet fermions. The stability of dark matter is ensured by the…

High Energy Physics - Phenomenology · Physics 2015-09-15 Lorenzo Calibbi , Alberto Mariotti , Pantelis Tziveloglou

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

We consider the nuclear scattering cross section for the eXciting Dark Matter (XDM) model. In XDM, the Weakly Interacting Massive Particles (WIMPs) couple to the Standard Model only via an intermediate light scalar which mixes with the…

High Energy Physics - Phenomenology · Physics 2010-04-21 Douglas P. Finkbeiner , Tracy R. Slatyer , Neal Weiner

Isospin-violating dark matter (IVDM) has been proposed as a viable scenario to reconcile conflicting positive and null results from direct detection dark matter experiments. We show that the lowest-order dark matter-nucleus scattering rate…

High Energy Physics - Phenomenology · Physics 2015-06-18 Vincenzo Cirigliano , Michael L. Graesser , Grigory Ovanesyan , Ian M. Shoemaker

We investigate a WIMP dark matter (DM) candidate in the form of a singlino-dominated lightest supersymmetric particle (LSP) within the $Z_3$-symmetric Next-to-Minimal Supersymmetric Standard Model (NMSSM). This framework gives rise to…

High Energy Physics - Phenomenology · Physics 2026-05-27 Ernesto Arganda , Martín de los Rios , Andres D. Perez , Subhojit Roy , Rosa M. Sandá Seoane , Carlos E. M. Wagner

We suggest a minimal model for GeV-scale Majorana Dark Matter (DM) coupled to the standard model lepton sector via a charged scalar singlet. We show that there is an anti-correlation between the spin-independent DM-Nucleus scattering…

High Energy Physics - Phenomenology · Physics 2021-04-21 Adil Jueid , Salah Nasri , Rachik Soualah

Recent LHC results suggest a standard model (SM)-like Higgs boson in the vicinity of 125 GeV with no clear indications yet of physics beyond the SM. At the same time, the SM is incomplete, since additional dynamics are required to…

High Energy Physics - Phenomenology · Physics 2015-06-04 Clifford Cheung , Michele Papucci , Kathryn M. Zurek

We study how the combined observation of dark matter in various direct detection experiments can be used to determine the phenomenological properties of WIMP dark matter: mass, spin-dependent (SD) and spin-independent (SI) scattering cross…

High Energy Physics - Phenomenology · Physics 2015-06-15 D. G. Cerdeno , C. Cuesta , M. Fornasa , E. Garcia , C. Ginestra , Ji-Haeng Huh , M. Martinez , Y. Ortigoza , M. Peiro , J. Puimedon , L. Robledo , M. L. Sarsa

We made global fits of the inert Higgs doublet model (IDM) in the light of collider and dark matter search limits and the requirement for a strongly first-order electroweak phase transition (EWPT). These show that there are still IDM…

High Energy Physics - Phenomenology · Physics 2022-10-11 Shehu AbdusSalam , Leila Kalhor , Mohammad Mohammadidoust

We present comparisons of direct dark matter (DM) detection data for light WIMPs with exothermic scattering with nuclei (exoDM), both assuming the Standard Halo Model (SHM) and in a halo model - independent manner. Exothermic interactions…

High Energy Physics - Phenomenology · Physics 2015-06-19 Graciela B. Gelmini , Andreea Georgescu , Ji-Haeng Huh

We study the dark matter (DM) direct detection for the models with the effects of the isospin-violating couplings, exothermic scatterings, and/or the lightness of the mediator, proposed to relax the tension between the CDMS-Si signals and…

High Energy Physics - Phenomenology · Physics 2016-08-08 Chao-Qiang Geng , Da Huang , Chun-Hao Lee , Qing Wang

In this Letter, we propose a new possible connection between dark matter relic density and baryon asymmetry of the universe. The portal between standard model sector and dark matter not only controls the relic density and detections of dark…

High Energy Physics - Phenomenology · Physics 2015-05-30 Talal Ahmed Chowdhury , Miha Nemevsek , Goran Senjanovic , Yue Zhang

Given that the LHC experiment has produced strong constraints on the colored supersymmetric particles (sparticles), testing the electroweak supersymmetry (EWSUSY) will be the next crucial task at the LHC. On the other hand, the light…

High Energy Physics - Phenomenology · Physics 2020-01-08 Murat Abdughani , Ken-ichi Hikasa , Lei Wu , Jin Min Yang , Jun Zhao

In a large class of scenarios, dark matter (DM) particles that belong to a multiplet of the standard model (SM) weak interactions are challenging to probe in direct detection experiments due to loop-suppressed cross-sections. Direct…

High Energy Physics - Phenomenology · Physics 2019-04-15 Tao Han , Satyanarayan Mukhopadhyay , Xing Wang

We calculate dark matter scattering rates in the minimal supersymmetric extension of the Standard Model (MSSM), allowing the soft supersymmetry-breaking masses of the Higgs multiplets, m_{1,2}, to be non-universal (NUHM). Compared with the…

High Energy Physics - Phenomenology · Physics 2008-11-26 J. Ellis , A. Ferstl , K. A. Olive , Y. Santoso

While many interactions of dark matter (DM) with the standard model (SM) affect direct detection and LHC searches, there are only a few operators generating annihilation of DM into photons. All of these operators, except four of them, give…

High Energy Physics - Phenomenology · Physics 2014-12-24 Andreas Crivellin , Ulrich Haisch
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