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Sub-GeV dark matter (DM) which interacts with electrons can excite electrons occupying molecular orbitals in a scattering event. In particular, aromatic compounds such as benzene or xylene have an electronic excitation energy of a few eV,…

High Energy Physics - Phenomenology · Physics 2020-03-11 Carlos Blanco , J. I. Collar , Yonatan Kahn , Benjamin Lillard

Dark matter (DM) comes from long-range gravitational observations, and it is considered as something that does not interact with ordinary matter or emits light. However, also on much smaller scales, a number of unexpected observations of…

Anti-quark nuggets (AQNs) have been suggested to solve the dark matter (DM) and the missing antimatter problem in the universe and have been proposed as an explanation of various observations. Their size is in the {\mu}m range and their…

Celestial observations often exhibit inexplicable planetary dependencies when the timing of an observable is projected onto planetary heliocentric positions. This is possible only for incident, non-relativistic streams. Notably, the…

Till today, the nature of Dark Matter (DM) remains elusive despite all our efforts. This missing matter of the universe has not been observed by the already operating DM direct-detection experiments, but we can infer its gravitational…

High Energy Astrophysical Phenomena · Physics 2024-06-10 M. Vikiaris , V. Petousis , M. Veselsky , Ch. C. Moustakidis

We propose the nucleon consumption induced by dark matter (DM) as a new scenario to overcome the energy threshold of direct detection. It can be realized with proton ($\chi + p \rightarrow \chi + \ell^+$) or neutron ($\chi + n \rightarrow…

High Energy Physics - Phenomenology · Physics 2024-12-20 Shao-Feng Ge , Xiao-Dong Ma

The flux of Hidden Sector particles from the Galactic halo reaching an underground detector can be significantly attenuated by interactions within the Earth for sufficiently large scattering crosssections. This attenuation gives rise to a…

Indirect detection experiments typically measure the flux of annihilating dark matter (DM) particles propagating freely through galactic halos. We consider a new scenario where celestial bodies "focus" DM annihilation events, increasing the…

High Energy Astrophysical Phenomena · Physics 2021-05-05 Rebecca K. Leane , Tim Linden , Payel Mukhopadhyay , Natalia Toro

The annihilation of dark matter (DM) particles accumulated in the Sun could produce a flux of neutrinos, which is potentially detectable with neutrino detectors/telescopes and the DM elastic scattering cross section can be constrained.…

High Energy Physics - Phenomenology · Physics 2017-05-16 Raghuveer Garani , Sergio Palomares-Ruiz

Despite strong evidence for the existence of large amounts of dark matter (DM) in our Universe, there is no direct indication of its presence in our own solar system. All estimates of the local DM density rely on extrapolating results on…

High Energy Physics - Phenomenology · Physics 2021-12-23 Bradley J. Kavanagh , Timon Emken , Riccardo Catena

We study the properties and direct detection prospects of an as of yet neglected population of dark matter (DM) particles moving in orbits gravitationally bound to the Earth. This DM population is expected to form via scattering by nuclei…

Cosmology and Nongalactic Astrophysics · Physics 2017-09-27 Riccardo Catena , Chris Kouvaris

Dark Matter (DM) comprising particles in the mass range of a few MeV to GeV is waiting to be explored, given the many theoretical models accommodating cosmological abundance. We hereby propose an experiment with the LHC proton beam of 7 TeV…

High Energy Physics - Experiment · Physics 2016-09-04 Ashok Kumar , Archana Sharma

So-called 'dark comets' are small, morphologically inactive near-Earth objects (NEOs) that exhibit nongravitational accelerations inconsistent with radiative effects. These objects exhibit short rotational periods (minutes to hours), where…

The scattering of light dark matter off thermal electrons inside the Sun produces a "fast" sub-component of the dark matter flux that may be detectable in underground experiments. We update and extend previous work by analyzing the…

High Energy Physics - Phenomenology · Physics 2023-09-27 Haipeng An , Haoming Nie , Maxim Pospelov , Josef Pradler , Adam Ritz

This article reviews recent progress in observational determination of the properties of dark matter on small astrophysical scales, and progress towards the European Extremely Large Telescope. Current results suggest some surprises: the…

Astrophysics · Physics 2007-05-23 Gerard Gilmore

The DArk Matter Particle Explorer (DAMPE) is a satellite-borne, high-energy particle and $\gamma$-ray detector, which is dedicated to indirectly detecting particle dark matter and studying high-energy astrophysics. The first results about…

High Energy Astrophysical Phenomena · Physics 2018-08-16 Qiang Yuan , Lei Feng

We report on a search for sub-GeV dark matter (DM) particles interacting with electrons using the DAMIC-M prototype detector at the Modane Underground Laboratory. The data feature a significantly lower detector single $e^-$ rate (factor 50)…

The Dark Matter Particle Explorer (DAMPE) is a space-borne particle detector and cosmic ray observatory in operation since 2015, designed to probe electrons and gamma rays from a few GeV to 10 TeV energy, as well as cosmic protons and…

Instrumentation and Methods for Astrophysics · Physics 2021-08-11 David Droz , Andrii Tykhonov , Xin Wu , Francesca Alemanno , Giovanni Ambrosi , Enrico Catanzani , Margherita Di Santo , Dimitrios Kyratzis , Stephan Zimmer

A few multiplets that can be added to the SM contain a lightest neutral component which is automatically stable and provides allowed DM candidates with a non-standard phenomenology. Thanks to coannihilations, a successful thermal abundance…

High Energy Physics - Phenomenology · Physics 2009-10-09 Marco Cirelli , Nicolao Fornengo , Alessandro Strumia

It is generally inferred from astronomical measurements that Dark Matter (DM) comprises approximately 27\% of the energy-density of the universe. If DM is a subatomic particle, a possible candidate is a Weakly Interacting Massive Particle…

Instrumentation and Methods for Astrophysics · Physics 2015-01-26 The DarkSide Collaboration , P. Agnes , T. Alexander , A. Alton , K. Arisaka , H. O. Back , B. Baldin , K. Biery , G. Bonfini , M. Bossa , A. Brigatti , J. Brodsky , F. Budano , L. Cadonati , F. Calaprice , N. Canci , A. Candela , H. Cao , M. Cariello , P. Cavalcante , A. Chavarria , A. Chepurnov , A. G. Cocco , L. Crippa , D. D'Angelo , M. D'Incecco , S. Davini , M. De Deo , A. Derbin , A. Devoto , F. Di Eusanio , G. Di Pieto , E. Edkins , A. Empl , A. Fan , G. Fiorillo , K. Fomenko , G. Forster , D. Franco , F. Gabriele , C. Galbiati , A. Goretti , L. Grandi , M. Gromov , M. Y. Guan , Y. Guardincerri , B. Hackett , K. Herner , E. Hungerford , Al. Ianni , An. Ianni , C. Jollet , K. Keeter , C. Kendziora , S. Kidner , V. Kobychev , G. Koh , D. Korablev , G. Korga , A. Kurlej , P. X. Li , B. Loer , P. Lombardi , C. Love , L. Ludhova , S. Luitz , Y. Q. Ma , I. Machulin , A. Mandarano , S. M. Mari , J. Maricic , L. Marini , J. Martoff , A. Meregaglia , E. Meroni , P. D. Meyers , R. Milincic , D. Montanari , M. Montuschi , M. E. Monzani , P. Mosteiro , B. Mount , V. Muratova , P. Musico , A. Nelson , S. Odrowski , M. Okounkoa , M. Orsini , F. Ortica , L. Pagani , M. Pallavicini , E. Pantic , L. Papp , S. Parmeggiano , Bob Parsells , K. Pelczar , N. Pelliccia , S. Perasso , A. Pocar , S. Pordes , D. Pugachev , H. Qian , K. Randle , G. Ranucci , A. Razeto , B. Reinhold , A. Renshaw , A. Romani , B. Rossi , N. Rossi , S. D. Rountree , D. Sablone , P. Saggese , R. Saldanha , W. Sands , S. Sangiorgio , E. Segreto , D. Semenov , E. Shields , M. Skorokhvatov , O. Smirnov , A. Sotnikov , C. Stanford , Suvorov , R. Tartaglia , J. Tatarowicz , G. Testera , A. Tonazzo , E. Unzhakov , R. B. Vogelaar , M. Wada , S. E. Walker , H. Wang , Y. Wang , A. Watson , S. Westerdale , M. Wojcik , A. Wright , X. Xiang , J. Xu , C. G. Yang , J. Yoo , S. Zavatarelli , A. Zec , C. Zhu , G. Zuzel