Limits on compact dark matter from null results of searches for lensing of quasistellar objects

1991 ◽  
Vol 66 (5) ◽  
pp. 538-540 ◽  
Author(s):  
Robert J. Nemiroff
Keyword(s):  
Dark Matter ◽  
Null Results ◽  
Quasistellar Objects

scholarly journals RECONCILING THE POSITIVE DAMA ANNUAL MODULATION SIGNAL WITH THE NEGATIVE RESULTS OF THE CDMS II EXPERIMENT

2004 ◽  
Vol 19 (24) ◽  
pp. 1841-1846 ◽  
Author(s):  
R. FOOT
Keyword(s):  
Dark Matter ◽  
Positive Result ◽  
Lower Threshold ◽  
Annual Modulation ◽  
Null Results ◽  
Negative Results ◽  
Modulation Signal ◽  
Decisive Test ◽  
Light Target ◽  
Mirror Matter

We examine the recent CDMS II results in the context of the mirror matter interpretation of the DAMA/NaI experiment. We find that the favoured mirror matter interpretation of the DAMA/NaI experiment — a He ′/ H ′-dominated halo with a small O ′ component is fully consistent with the null results reported by CDMS II. While the CDMS II experiment is quite sensitive to a heavy Fe ′ component, and may yet find a positive result, a more decisive test of mirror matter-type dark matter would require a lower threshold experiment using light target elements.

MIRROR DARK MATTER

2007 ◽  
Vol 22 (27) ◽  
pp. 4951-4957 ◽  
Author(s):  
R. FOOT
Keyword(s):  
Dark Matter ◽  
Direct Detection ◽  
The Other ◽  
Simple Explanation ◽  
Annual Modulation ◽  
Null Results ◽  
The Status ◽  
Modulation Signal ◽  
The Universe

A mirror sector of particles and forces provides a simple explanation of the inferred dark matter of the Universe. The status of this theory is reviewed - with emphasis on how the theory explains the impressive DAMA/NaI annual modulation signal, whilst also being consistent with the null results of the other direct detection experiments.

scholarly journals New class of biological detectors for WIMPs

2014 ◽  
Vol 29 (19) ◽  
pp. 1443007 ◽  
Author(s):  
A. K. Drukier ◽  
Ch. Cantor ◽  
M. Chonofsky ◽  
G. M. Church ◽  
R. L. Fagaly ◽  
...  
Keyword(s):  
Dark Matter ◽  
Large Fraction ◽  
Enzymatic Reaction ◽  
Light Response ◽  
Weakly Interacting Massive Particles ◽  
Enzymatic Reactions ◽  
Null Results ◽  
New Class ◽  
Change Of State ◽  
The Universe

Weakly Interacting Massive Particles (WIMPs) may constitute a large fraction of the matter in the Universe. There are excess events in the data of DAMA/LIBRA, CoGeNT, CRESST-II, and recently CDMS-Si, which could be consistent with WIMP masses of approximately 10 GeV /c2. However, for M DM > 10 GeV /c2 null results of the CDMS-Ge, XENON, and LUX detectors may be in tension with the potential detections for certain dark matter scenarios and assuming a certain light response. We propose the use of a new class of biological dark matter (DM) detectors to further examine this light dark matter hypothesis, taking advantage of new signatures with low atomic number targets. Two types of biological DM detectors are discussed here: DNA-based detectors and enzymatic reactions (ER) based detectors. In the case of DNA-based detectors, we discuss a new implementation. In the case of ER detectors, there are four crucial phases of the detection process: (a) change of state due to energy deposited by a particle; (b) amplification due to the release of energy derived from the action of an enzyme on its substrate; (c) sustainable but nonexplosive enzymatic reaction; (d) self-termination due to the denaturation of the enzyme, when the temperature is raised. This paper provides information of how to design as well as optimize these four processes.

scholarly journals Probing degenerate heavy Higgs bosons in NMSSM with vector-like particles

2017 ◽  
Vol 32 (33) ◽  
pp. 1745005
Author(s):  
Fei Wang ◽  
Wenyu Wang ◽  
Lei Wu ◽  
Jin Min Yang ◽  
Mengchao Zhang
Keyword(s):  
Dark Matter ◽  
Large Hadron Collider ◽  
Standard Model ◽  
Hadron Collider ◽  
Higgs Bosons ◽  
High Mass ◽  
Top Down ◽  
Null Results ◽  
Grand Unified Theories ◽  
Unified Theories

In this work, we investigate the degenerate heavy Higgs bosons in the Next-to-Minimal Supersymmetric Standard Model (NMSSM) by introducing vector-like particles. Such an extension is well motivated from the top-down view since some grand unified theories usually predict the existence of singlet scalars and vector-like particles at weak scale. Under the constraints from the Large Hadron Collider (LHC) and dark matter experiments, we find that (1) the null results of searching for high mass resonances have tightly constrained the parameter space; (2) two degenerate heavy singlet Higgs bosons [Formula: see text] and [Formula: see text] can sizably decay to [Formula: see text] invisibly. Therefore, search for the monojet events through the process [Formula: see text] may further test our scenario at the future LHC.

scholarly journals Gluino-SUGRA scenarios in light of FNAL muon g – 2 anomaly

2021 ◽  
Vol 2021 (12) ◽  
Author(s):  
Zhuang Li ◽  
Guo-Li Liu ◽  
Fei Wang ◽  
Jin Min Yang ◽  
Yang Zhang
Keyword(s):  
Dark Matter ◽  
B Physics ◽  
Model Building ◽  
Mass Parameter ◽  
Boson Mass ◽  
Higgs Boson Mass ◽  
Gluino Mass ◽  
Null Results ◽  
Scalar Mass ◽  
Gut Scale

Abstract Gluino-SUGRA ($$ \overset{\sim }{g} $$ g ~ SUGRA), which is an economical extension of the predictive mSUGRA, adopts much heavier gluino mass parameter than other gauginos mass parameters and universal scalar mass parameter at the unification scale. It can elegantly reconcile the experimental results on the Higgs boson mass, the muon g − 2, the null results in search for supersymmetry at the LHC and the results from B-physics. In this work, we propose several new ways to generate large gaugino hierarchy (i.e. M3 » M1, M2) for $$ \overset{\sim }{g} $$ g ~ SUGRA model building and then discuss in detail the implications of the new muon g − 2 results with the updated LHC constraints on such $$ \overset{\sim }{g} $$ g ~ SUGRA scenarios. We obtain the following observations: (i) for the most interesting M1 = M2 case at the GUT scale with a viable bino-like dark matter, the $$ \overset{\sim }{g} $$ g ~ SUGRA can explain the muon g − 2 anomaly at 1σ level and be consistent with the updated LHC constraints for 6 ≤ M3/M1 ≤ 9 at the GUT scale; (ii) For M1 : M2 = 5 : 1 at the GUT scale with wino-like dark matter, the $$ \overset{\sim }{g} $$ g ~ SUGRA model can explain the muon g − 2 anomaly at 2σ level and be consistent with the updated LHC constraints for 3 ≤ M3/M1 ≤ 3.2 at the GUT scale; (iii) For M1 : M2 = 3 : 2 at the GUT scale with mixed bino-wino dark matter, the $$ \overset{\sim }{g} $$ g ~ SUGRA model can explain the muon g − 2 anomaly at 1σ level and be consistent with the updated LHC constraints for 6.9 ≤ M3/M1 ≤ 7.5 at the GUT scale. Although the choice of heavy gluino will always increase the FT involved, some of the 1σ/2σ survived points of $$ \Delta {a}_{\mu}^{\mathrm{combine}} $$ ∆ a μ combine can still allow low EWFT of order several hundreds and be fairly natural. Constraints from (dimension-five operator induced) proton decay are also discussed.

scholarly journals Cosmic ray boosted sub-GeV gravitationally interacting dark matter in direct detection

2020 ◽  
Vol 2020 (12) ◽  
Author(s):  
Wenyu Wang ◽  
Lei Wu ◽  
Jin Min Yang ◽  
Hang Zhou ◽  
Bin Zhu
Keyword(s):  
Dark Matter ◽  
Direct Detection ◽  
Gravitational Interaction ◽  
Cosmic Ray ◽  
High Energy ◽  
Current Data ◽  
Recoil Energy ◽  
Null Results ◽  
High Energy Cosmic Rays ◽  
Visible Sector

Abstract Detections of non-gravitational interactions of massive dark matter (DM) with visible sector so far have given null results. The DM may communicate with the ordinary matter only through gravitational interaction. Besides, the majority of traditional direct detections have poor sensitivities for light DM because of the small recoil energy. Thanks to the high energy cosmic rays (CRs), the light DM can be boosted by scattering with CRs and thus may be detected in the ongoing experiments. In this work, we derive the exclusion limits on the cosmic ray boosted sub-GeV DM with gravitational mediator from the Xenon1T data. It turns out that a sizable region of such a cosmic ray boosted DM can be excluded by the current data.

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