Article
Physics, Particles & Fields
Gerrit Bickendorf, Manuel Drees
Summary: We investigate the effects of leptophilic dark matter interactions on muon decays and ground state meson decays in current experiments. The study focuses on a secluded dark sector that exclusively interacts with leptons through a scalar or vector mediator. The results show that these interactions can significantly affect leptonic decays and deform energy spectra. The Michel decay of muons is analyzed to constrain the parameter space. The decays of rare mesons, such as pi(+/-), K-+/-, D-+/-, and D-s(+/-), to ev are also considered. Strong constraints can be derived for scalar mediators as they remove the helicity suppression in the Standard Model. The constraints on the couplings of light mediators to electrons and muons are found to be weaker than those from experiments at low-energy e(+)e(-) colliders and the muon magnetic moment. Additionally, it is shown that kaon and pion decays exclude a scenario with a scalar dark matter particle having a dimension-5 coupling to electrons.
EUROPEAN PHYSICAL JOURNAL C
(2022)
Article
Astronomy & Astrophysics
Nicole F. Bell, James B. Dent, Isaac W. Sanderson
Summary: Indirect detection of dark matter captured in the Sun and subsequently annihilated to long-lived mediators can produce striking gamma ray signals, as determined by recent measurements from the HAWC Observatory. Limits on heavy dark matter are found to be orders of magnitude more powerful than direct detection experiments, with consideration given to a well-motivated model in which dark matter annihilates to dark photons. Solar gamma ray constraints enable exclusion of previously unconstrained regions of dark photon parameter space, despite reductions in strength compared to ideal cases.
Article
Astronomy & Astrophysics
Johannes Herms, Alejandro Ibarra
Summary: This study investigates a dark matter scenario containing two generations of dark matter particles with different masses and couplings. In some parts of the parameter space, the heavier generation of dark matter can play a pivotal role in generating the correct dark matter abundance. This can lead to significantly boosted indirect and direct detection signals compared to scenarios with only single-flavored dark matter.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2021)
Article
Astronomy & Astrophysics
John Coffey, David McKeen, David E. Morrissey, Nirmal Raj
Summary: Scattering interactions between dark matter and Standard Model states mediated by pseudoscalars are difficult to detect at direct detection experiments. However, they can be observed in the dark matter-induced heating of neutron stars. This study investigates this phenomenon and compares the sensitivity of neutron star heating to bounds from direct searches for the mediators and dark matter.
Article
Astronomy & Astrophysics
Fabiola Fortuna, Pablo Roig
Summary: We build upon a previous study by employing an effective field theory framework to investigate the interactions between dark matter and the standard model utilizing spin-one mediators. We extend the analysis to explore a broader mass range of dark matter, up to 6.4 TeV, and incorporate constraints from relic density, direct and indirect detection experiments, as well as collider data from the ATLAS Collaboration. Our results demonstrate a wider range of viable solutions for operators of dimension 5, OP1 and OP4, and a limited range of solutions for the dimension 6 operator, OP3, depending on the mass thresholds.
Article
Physics, Multidisciplinary
D. S. M. Alves, S. R. Elliott, R. Massarczyk, S. J. Meijer, H. Ramani
Summary: We report the first measurement of radiation from a 178mHf sample for the purpose of searching for dark matter. The gamma flux from the sample was measured using a Ge detector and the obtained limits on this gamma flux were used to constrain the parameter space of inelastic dark matter. Furthermore, we discuss the potential of future studies with 178mHf.
PHYSICAL REVIEW LETTERS
(2023)
Article
Physics, Particles & Fields
Bastian Diaz Saez, Patricio Escalona, Sebastian Norero, Alfonso Zerwekh
Summary: The model extends the Standard Model by including two gauge singlets, potentially forming a two-component dark matter model. The study focuses on relic abundance production via freeze-out and experimental constraints from invisible Higgs decay, dark matter relic abundance, and direct/indirect detection. Three viable regions of the parameter space were identified, with the model being sensitive to indirect searches.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Astronomy & Astrophysics
Sachiho Abe, Gi-Chol Cho, Kentarou Mawatari
Summary: In this study, a pseudoscalar dark matter model from a complex singlet extension of the standard model is analyzed. It is found that dark-matter nucleon scattering is suppressed when two CP-even scalars are degenerate. The possibility of verifying this scenario using the recoil-mass technique at the International Linear Collider is also discussed.
Article
Physics, Multidisciplinary
James M. Cline, Shan Gao, Fangyi Guo, Zhongan Lin, Shiyan Liu, Matteo Puel, Phillip Todd, Tianzhuo Xiao
Summary: Neutrino emission coinciding with gamma rays has been observed from the blazar TXS 0506 + 056 by the IceCube telescope. These neutrinos had to traverse through a dense spike of dark matter surrounding the central black hole. The observation of such neutrinos implies new upper limits on the neutrino-dark matter scattering cross section as a function of dark matter mass. The constraint is stronger than existing ones for a range of dark matter masses, assuming a linearly rising cross section with energy. Competitive bounds are also possible for constant cross sections, depending on the details of the dark matter spike.
PHYSICAL REVIEW LETTERS
(2023)
Review
Physics, Multidisciplinary
Manuel A. Buen-Abad, Rouven Essig, David McKeen, Yi-Ming Zhong
Summary: This article investigates the effects of dark matter interactions with electrons or protons on the cosmic microwave background and the matter power spectrum, and utilizes diverse data to study these interactions. The study finds that these interactions result in momentum and heat exchange between ordinary and dark matter, and provides constraints on dark matter models. These constraints are crucial for understanding the interactions between dark matter and ordinary matter.
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS
(2022)
Article
Physics, Particles & Fields
Yoo-Jin Kang, Hyun Min Lee
Summary: The study proposes a new mechanism for dark matter self-interaction in the presence of a massive spin-2 mediator, finding that the resulting self-scattering cross section is velocity-dependent. The model is shown to be marginally compatible with perturbative unitarity in the ghost-free realization of the massive spin-2 particle.
EUROPEAN PHYSICAL JOURNAL C
(2021)
Article
Physics, Particles & Fields
Hanna Mies, Christiane Scherb, Pedro Schwaller
Summary: We investigate the constraints on a QCD-like dark sector imposed by current collider searches, focusing on the mediator mass and dark meson lifetimes. We find that the dark sector inherits a flavor structure, with differently flavored dark pions distinguishable by their lifetimes. The constraints from collider searches are sensitive even in scenarios with flavor, providing limits on the mediator mass.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Multidisciplinary
Jin-Wei Wang, Alessandro Granelli, Piero Ullio
Summary: We investigate the potential of relativistic protons in the jets of blazars to boost the surrounding dark matter particles to high energies through elastic collisions. By focusing on two sample blazars, namely TXS 0506 + 056 and BL Lacertae, we find that the induced dark matter flux at Earth could be significant and surpasses the flux associated with dark matter boosted by galactic cosmic rays. This becomes relevant for the direct detection of light dark matter particles with masses lighter than 1 GeV, as demonstrated by the null detection of a signal by XENON1T, MiniBooNE, and Borexino.
PHYSICAL REVIEW LETTERS
(2022)
Article
Astronomy & Astrophysics
Debajit Bose, Tarak Nath Maity, Tirtha Sankar Ray
Summary: By measuring the solar gamma ray flux, we have set stronger limits on the scattering cross section between dark matter and electrons, with these limits ranging from GeV to PeV scale for dark matter masses, which are four to six orders of magnitude stronger than existing limits.
Article
Astronomy & Astrophysics
Trygve Buanes, Inaki Lara, Krzysztof Rolbiecki, Kazuki Sakurai
Summary: We revisit LHC searches for heavy invisible particles using QCD initial state radiation, specifically focusing on the electroweakino sector. By analyzing the dijet signal region in a general multijet plus MET search conducted by ATLAS, we obtain nontrivial mass limits for various models. For instance, winos must have a mass greater than mW > 160 GeV and Higgsinos must have a mass greater than mh > 100 GeV, depending on the chargino-neutralino mass splitting. Furthermore, we predict that the exclusion limits will increase to mW > 200 GeV and mh > 130 GeV for winos and Higgsinos, respectively, with the expected data from LHC Run 3 with L = 300 fb-1. This study presents the first LHC limit for promptly decaying nearly mass-degenerate winos.
