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Article
Physics, Multidisciplinary
Gilly Elor et al.
Summary: We estimate the maximum direct detection cross section for sub-GeV dark matter scattering off nucleons. Cross sections greater than 10-36 - 10-30 cm2 seem implausible within the mass range of 10 keV-100 MeV. We propose a dark matter candidate called highly interactive particle relics (HYPERs) that achieves this maximum cross section.
PHYSICAL REVIEW LETTERS
(2023)
Article
Astronomy & Astrophysics
M. M. Gonzalez et al.
Summary: Gamma-ray bursts (GRBs) have the potential to emit very high energy photons due to the large energy release and strong magnetic fields. The recent observation of 18 and 251 TeV photons from GRB 221009A challenges our understanding of teraelectronvolt emission mechanisms and the extragalactic background. Researchers have started exploring dark matter candidates to explain these observations. This paper discusses the conditions and limitations of the synchrotron self-Compton radiation scenario in the GRB afterglow to interpret the 18 TeV photon. Possible scenarios involving axion-like particles (ALPs) and dark photon mechanisms are explored. The ALPs and dark photon scenarios can explain the 18 TeV photon but not the 251 TeV photon.
ASTROPHYSICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
B. Theodore Zhang et al.
Summary: The detection of hyper-bright gamma-ray burst (GRB) 221009A allows us to investigate the nature of GRB emission and the origin of very high-energy gamma rays. Using Fermi Large Area Telescope (Fermi-LAT) data, we analyze the GeV-TeV emission of this burst within the framework of the external reverse-shock model. Our findings suggest that the early emission in the 1-10 GeV range can be explained by the external inverse-Compton mechanism, in addition to the synchrotron self-Compton component. We also propose that the proton synchrotron emission from accelerated ultrahigh-energy cosmic rays (UHECRs) is detectable and may explain TeV photons detected by LHAASO or constrain the UHECR acceleration mechanism.
ASTROPHYSICAL JOURNAL LETTERS
(2023)
Article
Physics, Multidisciplinary
Weikang Lin et al.
Summary: The survival rate of Very high energy (VHE) photons may be higher than expected in standard-model physics, as indicated by the recent gamma ray burst GRB221009A. While the oscillation of photon-axion like particles (ALPs) can increase the survival rate of VHE photons, previous studies have not been based on specific particle models, thus leaving the identity of the corresponding ALP uncertain. In this study, we demonstrate that the required ALP scenario is consistent with the electroweak axion with an anomaly free Z(10) Froggatt-Nielsen symmetry.
CHINESE PHYSICS LETTERS
(2023)
Article
Astronomy & Astrophysics
Jihong Huang et al.
Summary: Recently, the LHAASO collaboration has observed gamma rays with energies up to ten TeV from the gamma-ray burst GRB221009A, generating interest in the astronomy, particle physics, and astrophysics communities for possible interpretations. In this paper, a plausible scenario is proposed where neutrinos are produced alongside TeV photons in the gamma-ray burst and subsequently decay into axion-like particles, which then convert into gamma rays in the galactic magnetic fields. This scenario helps alleviate the tension between previous interpretations of axion-like particles and the observational constraints on relevant coupling constant and mass.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2023)
Article
Physics, Nuclear
Vedran Brdar et al.
Article
Astronomy & Astrophysics
Shota Nakagawa et al.
Summary: This study investigates the behavior of an axion-like particle (ALP) that goes through a first-order phase transition in terms of its mass or potential minimum. It is observed that if the ALP obtains a potential from non-perturbative effects of SU(N) gauge theory confined via the first-order phase transition, similar dynamics can be achieved as in the trapped misalignment mechanism. The enhanced ALP abundance in this mechanism provides an explanation for dark matter and is accessible to experiments such as IAXO, ALPS-II, and DM-radio.
Article
Astronomy & Astrophysics
Justin D. D. Finke et al.
Summary: The preliminary detections of gamma-ray burst 221009A up to 18 TeV by LHAASO and up to 251 TeV by Carpet 2 have been reported. Although these photons initially seem to have a low probability of surviving pair production and reaching Earth due to their redshift, extrapolating the Fermi Large Area Telescope spectrum indicates that the survival of the 18 TeV photon is not unlikely with recent background light models. However, the detection of a 251 TeV event is still very unlikely, unless there is a violation of Lorentz invariance at certain energy scales.
ASTROPHYSICAL JOURNAL LETTERS
(2023)
Article
Physics, Multidisciplinary
J. Aalbers et al.
Summary: The LUX-ZEPLIN experiment conducted a dark matter detection using a dual-phase xenon time projection chamber at the Sanford Underground Research Facility in Lead, South Dakota, USA. With a fiducial mass of 5.5 t and an exposure of 60 live days, it reported results showing consistency with a background-only hypothesis in the search for weakly interacting massive particles (WIMPs).
PHYSICAL REVIEW LETTERS
(2023)
Article
Physics, Multidisciplinary
Alexei Y. Smirnov et al.
Summary: This paragraph discusses a mechanism that leads to a decrease in the attenuation of high energy gamma-ray flux from gamma-ray burst GRB 221009A. The mechanism is based on the existence of mostly sterile neutrino N with a mass of (0.1 - 1) MeV, which mixes with active neutrinos. The N particles are produced in the gamma-ray burst through π and K decays, and they undergo radiative decay N - νγ on their way to Earth. Various restrictions on this scenario are examined, and it is found that the high energy γ events at 18 TeV can be explained under certain conditions.
PHYSICAL REVIEW LETTERS
(2023)
Article
Astronomy & Astrophysics
Shu-Yuan Guo et al.
Summary: The LHAASO Collaboration has observed very high energy photons (18 TeV) from the gamma-ray burst GRB221009A. The presence of a sterile neutrino with both mixing and a transition magnetic moment is proposed to explain these high energy photon events. However, it is demonstrated that this explanation is strongly disfavored by the cosmic microwave background and big bang nucleosynthesis in standard cosmology.
Article
Astronomy & Astrophysics
Shyam Balaji et al.
Summary: The recent astrophysical transient Swift J1913.1 at a redshift of z ≈ 0.151 may be associated with the γ-ray burst GRB 221009A. Very high-energy γ rays (up to 18 TeV) were observed following the transient, which is unexpected as photons of such high energy should annihilate with the diffuse extragalactic background light (EBL) before reaching Earth. This paper presents a CP-even scalar model to explain the 18 TeV event, proposing that highly boosted scalar particles are produced in the GRB and then undergo radiative decay while propagating to Earth, allowing the resulting photons to be produced without being nullified by the EBL.
Article
Astronomy & Astrophysics
P. Agnes et al.
Summary: This article presents a conceptual design for a new detector called DarkSide-LowMass, which is capable of measuring low-energy light dark matter. The detector is optimized for sensitivity and has the potential to detect dark matter in the solar neutrino fog.
Article
Astronomy & Astrophysics
P. S. Bhupal Dev et al.
Summary: Neutron star mergers provide a novel environment for studying new physics beyond the Standard Model. In this study, we considered a simple extension of the scalar sector involving a light CP-even scalar singlet S that mixes with the SM Higgs boson. We found that S particles can be produced abundantly in neutron star mergers and may either be trapped or stream freely out of the merger remnant. Our results show that the S particles can act as an extra cooling channel in the free-streaming region and contribute to faster thermal equilibration in the trapped region. Therefore, future observations of neutron star mergers could effectively probe a unique range of the S parameter space.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2022)
Article
Physics, Particles & Fields
Debasish Borah et al.
Summary: We propose a self-interacting boosted dark matter scenario to explain the excess of electron recoil events observed by the XENON1T experiment. By introducing a light mediator, the model successfully addresses the small-scale issues of cold dark matter through self-interactions. The model can explain the XENON1T excess by elastic scattering of the boosted dark matter component with electrons.
Review
Physics, Multidisciplinary
Julien Billard et al.
Summary: This report provides a comprehensive review of the experimental programme of direct detection searches for particle dark matter. It emphasizes European efforts and highlights the importance of direct detection in confirming the nature of dark matter. The report also discusses scientific and technological synergies with other areas of particle physics and addresses infrastructure needs and challenges.
REPORTS ON PROGRESS IN PHYSICS
(2022)
Article
Physics, Particles & Fields
Masahiro Ibe et al.
Summary: This study discusses the cosmological constraints on a dark scalar particle mixing with the Standard Model Higgs boson. The production process of the dark scalar when the reheating temperature of the Universe is very low is given special attention, allowing for a conservative limit on the low-mass scalar particle. The effect of the self-interaction of the dark scalars on cosmological constraints is also investigated.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Astronomy & Astrophysics
Shyam Balaji et al.
Summary: In this study, improved stellar luminosity limits on a light CP-even scalar field, which mixes with the Standard Model Higgs boson, are derived. The study includes the geometric effects for the decay and absorption of the scalar particles within the stellar interior. The updated astrophysical constraints can exclude a broad range of scalar masses and mixing angles.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2022)
Article
Astronomy & Astrophysics
Debasish Borah et al.
Summary: We propose a framework where a light scalar field can give rise to dark matter self-interactions and enhance CP asymmetry required for successful baryon asymmetry. In a scotogenic seesaw scenario, we demonstrate how the lightest right-handed neutrinos can play the role of dark matter and contribute to both dark matter relic and lepton asymmetry. The model can explain nonzero neutrino mass and be tested through various experiments related to dark matter, flavor physics, and colliders.
Article
Astronomy & Astrophysics
Katsuya Hashino et al.
Summary: The study explores how cosmological evolution can alter dark matter properties and introduces a novel mechanism of transient dark matter annihilation, in line with existing dark matter detection results.
Article
Astronomy & Astrophysics
Debasish Borah et al.
Summary: In this paper, we propose a scenario of self-interacting dark matter with a right handed neutrino portal to the standard model. The authors introduce a dark particle and a dark mediator to realize the required velocity-dependent self-interactions and efficiently annihilate the dark matter. Then, the authors fill the relic deficit of dark matter through a feeble interaction between dark matter and the standard model via a right handed neutrino portal.
Article
Astronomy & Astrophysics
Thomas Hambye et al.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2020)
Article
Astronomy & Astrophysics
P. S. Bhupal Dev et al.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2020)
Article
Physics, Particles & Fields
Ayuki Kamada et al.
JOURNAL OF HIGH ENERGY PHYSICS
(2020)
Correction
Astronomy & Astrophysics
P. S. Bhupal Dev et al.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2020)
Article
Physics, Multidisciplinary
Tao Ren et al.
Article
Astronomy & Astrophysics
A. H. Abdelhameed et al.
Article
Astronomy & Astrophysics
Q. Arnaud et al.
ASTROPARTICLE PHYSICS
(2018)
Review
Physics, Multidisciplinary
Sean Tulin et al.
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS
(2018)
Article
Physics, Particles & Fields
Masahiro Ibe et al.
JOURNAL OF HIGH ENERGY PHYSICS
(2018)
Article
Astronomy & Astrophysics
Peter Creasey et al.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2017)
Article
Physics, Particles & Fields
P. S. Bhupal Dev et al.
Article
Physics, Multidisciplinary
Ayuki Kamada et al.
PHYSICAL REVIEW LETTERS
(2017)
Article
Physics, Particles & Fields
Huitzu Tu et al.
JOURNAL OF HIGH ENERGY PHYSICS
(2017)
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Astronomy & Astrophysics
R. Agnese et al.
Article
Physics, Multidisciplinary
Manoj Kaplinghat et al.
PHYSICAL REVIEW LETTERS
(2016)
Article
Astronomy & Astrophysics
Gordan Krnjaic
Article
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Sean Tulin et al.
Article
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Sean Tulin et al.
PHYSICAL REVIEW LETTERS
(2013)
Article
Physics, Particles & Fields
Ross Diener et al.
JOURNAL OF HIGH ENERGY PHYSICS
(2013)
Article
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Timothy Cohen et al.
Article
Physics, Multidisciplinary
SA Khrapak et al.
PHYSICAL REVIEW LETTERS
(2003)
Article
Physics, Multidisciplinary
DN Spergel et al.
PHYSICAL REVIEW LETTERS
(2000)
