scholarly journals Constraining dark matter-nucleon scattering cross section by the background electron anti-neutrino flux data

2022 ◽  
pp. 136887
Author(s):  
Man Ho Chan ◽  
Chak Man Lee
Keyword(s):  
Dark Matter ◽  
Cross Section ◽  
Neutrino Flux ◽  
Scattering Cross Section ◽  
Nucleon Scattering ◽  
Flux Data ◽  
Scattering Cross

scholarly journals INTERPRETING THE BOUNDS ON SOLAR DARK MATTER INDUCED MUONS AT SUPER-KAMIOKANDE IN THE LIGHT OF CDMS RESULTS

2010 ◽  
Vol 25 (18n19) ◽  
pp. 3741-3747
Author(s):  
ABHIJIT BANDYOPADHYAY ◽  
SOVAN CHAKRABORTY ◽  
DEBASISH MAJUMDAR
Keyword(s):  
Dark Matter ◽  
Elastic Scattering ◽  
Cross Section ◽  
Enhancement Factor ◽  
Scattering Cross Section ◽  
The Sun ◽  
Detection Rates ◽  
Scattering Cross ◽  
Elastic Scattering Cross Section ◽  
Upper Limits

We consider the recent limits on dark matter–nucleon elastic scattering cross-section from the analysis of CDMS II collaboration using the two signal events observed in CDMS experiment. With these limits we try to interpret the super-Kamiokande (SK) bounds on the detection rates of up-going muons induced by the neutrinos that are produced in the sun from the decay of annihilation products of dark matter (WIMP's) captured in the solar core. Calculated rates of up-going muons for different annihilation channels at SK using CDMS bounds are found to be orders below the predicted upper limits of such up-going muon rates at SK. Thus there exists room for enhancement (boost) of the calculated rates using CDMS limits for interpreting SK bounds. Such a feature is expected to represent the PAMELA data with the current CDMS limits. We also show the dependence of such a possible enhancement factor (boost) on WIMP mass for different WIMP annihilation channels.

Ultra-high energy neutrino-nucleon scattering and gluon saturation

2018 ◽  
Vol 27 (12) ◽  
pp. 1840006
Author(s):  
Jamal Jalilian-Marian
Keyword(s):  
Cross Section ◽  
Evolution Equations ◽  
High Energy ◽  
Scattering Cross Section ◽  
Dglap Evolution ◽  
Ultra High Energy ◽  
Nucleon Scattering ◽  
High Energy Neutrino ◽  
Scattering Cross ◽  
Gluon Saturation

Ultra-high energy neutrinos are an enigma; among their many poorly understood aspects are their origins and how they interact with nucleons when they reach the Earth. Due to the hard scale ([Formula: see text]) involved in neutrino-nucleon scattering and for a large range of neutrino energies, it is appropriate to describe the target nucleon in terms of its partons — quarks and gluons — and their evolution with [Formula: see text] as governed by the Dokshitzer–Gribov–Lipatov–Altarelli–Parisi (DGLAP) evolution equations of perturbative Quantum ChromoDynamics (pQCD). Nevertheless, at the highest neutrino energies, the scattering cross-section is dominated by the contribution of small [Formula: see text] gluons of the target where one expects DGLAP evolution equations to break down due to high gluon density effects (gluon saturation). Here, we give a brief overview of gluon saturation physics in QCD and its effects on ultra-high energy neutrino-nucleon (nucleus) scattering cross-section.

scholarly journals Dark matter self-interactions from spin-2 mediators

2021 ◽  
Vol 81 (10) ◽  
Author(s):  
Yoo-Jin Kang ◽  
Hyun Min Lee
Keyword(s):  
Dark Matter ◽  
Cross Section ◽  
Scattering Cross Section ◽  
The Self ◽  
Leading Order ◽  
Resonance Effects ◽  
Scattering Cross ◽  
Born Cross Section ◽  
Massive Spin ◽  
Type Potential

AbstractWe propose a new mechanism for rendering dark matter self-interacting in the presence of a massive spin-2 mediator. The derived Yukawa-type potential for dark matter is independent of the spins of dark matter in the leading order of the momentum expansion, so are the resulting non-perturbative effects for the dark matter self-scattering. We find that both the Born cross section and relatively mild resonance effects assist to make the self-scattering cross section velocity-dependent. We discuss how to evade the current indirect bounds on dark matter annihilations and show that the model is marginally compatible with perturbative unitarity in the ghost-free realization of the massive spin-2 particle.

scholarly journals Dark matter scattering cross section and dynamics in dark Yang-Mills theory

2021 ◽  
Vol 813 ◽  
pp. 136056
Author(s):  
Nodoka Yamanaka ◽  
Hideaki Iida ◽  
Atsushi Nakamura ◽  
Masayuki Wakayama
Keyword(s):  
Dark Matter ◽  
Cross Section ◽  
Scattering Cross Section ◽  
Yang Mills ◽  
Scattering Cross ◽  
Dark Matter Scattering
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