scholarly journals Improved inference for the signal significance

2018 ◽  
Vol 13 (12) ◽  
pp. P12011-P12011
Author(s):  
I. Volobouev ◽  
A. Trindade
Keyword(s):  
Signal Significance

scholarly journals ON THE STATISTICAL METHODS OF THE SIGNAL SIGNIFICANCE ESTIMATION IN THE DETECTION OF THE SIGNAL FROM THE POINT SOURCES OF COSMIC RAYS

2005 ◽  
Vol 20 (29) ◽  
pp. 6765-6768
Author(s):  
A. CHILINGARIAN ◽  
G. GHARAGYOZYAN ◽  
G. HOVSEPYAN ◽  
G. KARAPETYAN
Keyword(s):  
Cosmic Rays ◽  
Point Source ◽  
Degrees Of Freedom ◽  
High Energy Physics ◽  
Simulation Models ◽  
High Energy ◽  
Point Sources ◽  
Analytical Treatment ◽  
Signal Significance ◽  
Energy Physics

The estimation of the significance of the peaks in 1 and 2-dimensional distributions is one of the most important problems in high-energy physics and astrophysics. The physical inference from low-statistics experiments usually is biased and many discoveries lack further confirmation. We analyze the significance of the experimental evidence in the on-going efforts of detecting the point source of Cosmic Rays. The analysis is carried out in the framework of two models utilizing the extremum statistics: first – using the fixed grid of celestial coordinates, and second – using the tuned grid (introducing more degrees of freedom in the search). The test distributions for the significance estimation are obtained both from simulation models and from the analytical treatment of the problem.

scholarly journals Top Partner Production at e+e- Collider in the Littlest Higgs Model with T-Parity

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Haiyan Wang ◽  
Bingfang Yang
Keyword(s):  
Pair Production ◽  
Cross Sections ◽  
High Energy ◽  
Higgs Model ◽  
Dilepton Channel ◽  
Associated Production ◽  
Production Processes ◽  
The Future ◽  
Signal Significance ◽  
The Cross

In the framework of the littlest Higgs Model with T-parity, we discuss the top partner production at future e+e- collider. We calculate the cross sections of the top partner production processes and associated production processes of Higgs and top partner under current constraints. Then, we investigate the observability of the T-odd top partner pair production through the process e+e-→T-T¯-→tt¯AHAH in the tt¯ dilepton channel for two T-odd top partner masses mT-=603  (708) GeV at s=1.5 TeV. We analyze the signal significance depending on the integrated luminosity and find that this signal is promising at the future high energy e+e- collider.

scholarly journals Flavor-changing decay h → τ μ at super hadron colliders

2020 ◽  
Vol 2020 (8) ◽  
Author(s):  
M.A. Arroyo-Ureña ◽  
T.A. Valencia-Pérez ◽  
R. Gaitán ◽  
J.H. Montes de Oca Y ◽  
A. Fernández-Téllez
Keyword(s):  
Higgs Boson ◽  
Large Hadron Collider ◽  
Hadron Collider ◽  
High Energy ◽  
Model Parameters ◽  
Hadron Colliders ◽  
High Luminosity ◽  
Flavor Changing ◽  
Signal Significance ◽  
Integrated Luminosity

Abstract We study the flavor-changing decay h → τ μ with τ = τ− +τ+ and μ = μ− +μ+ of a Higgs boson at future hadron colliders, namely: a) High Luminosity Large Hadron Collider, b) High Energy Large Hadron Collider and c) Future hadron-hadron Circular Collider. The theoretical framework adopted is the Two-Higgs-Doublet Model type III. The free model parameters involved in the calculation are constrained through Higgs boson data, Lepton Flavor Violating processes and the muon anomalous magnetic dipole moment; later they are used to analyze the branching ratio of the decay h → τ μ and to evaluate the gg → h production cross section. We find that at the Large Hadron Collider is not possible to claim for evidence of the decay h → τ μ achieving a signal significance about of 1.46σ by considering its final integrated luminosity, 300 fb−1. More promising results arise at the High Luminosity Large Hadron Collider in which a prediction of 4.6σ when an integrated luminosity of 3 ab−1 and tan β = 8 are achieved. Meanwhile, at the High Energy Large Hadron Collider (Future hadron-hadron Circular Collider) a potential discovery could be claimed with a signal significance around 5.04σ (5.43σ) for an integrated luminosity of 3 ab−1 and tan β = 8 (5 ab−1 and tan β = 4).

scholarly journals Regenerative Agriculture: farmer motivation, environment and climate improvement

2021 ◽  
Vol 17 (3) ◽  
Author(s):  
Edgar A. Burns
Keyword(s):  
Climate Change ◽  
Paradigm Shift ◽  
Soil Health ◽  
No Till ◽  
The Social ◽  
Regenerative Agriculture ◽  
Signal Significance ◽  
New Form ◽  
Land Water ◽  
Over Time

Regenerative agriculture has become a social movement in farming. It embraces the environmental basis of farming. Land, water and nutrients are viewed as an ecological whole. This includes bacteria and mycorrhiza as essential to soil health and plant diversity, and mob stocking and no-till farming above ground. Regen ag, as regenerative agriculture is often called, is a paradigm shift for farmers, who are often perceived as resistant. There is a mismatch between academic and policy interest focusing on the scientific need for and value of regenerative agriculture, and the social and human motivating benefits of regenerative agriculture. This crucial willingness, not simply the turn away from denialism, is the signal significance of this new form of farming. In New Zealand and globally, climate change and environmental degradation can be addressed much more quickly, more thoroughly and less contentiously if regenerative agriculture is supported and extended, even as science documentation is achieved over time.

scholarly journals Combined detection of supernova neutrino signals

2021 ◽  
Vol 2021 (12) ◽  
pp. 053
Author(s):  
A. Sheshukov ◽  
A. Vishneva ◽  
A. Habig
Keyword(s):  
Shape Analysis ◽  
Time Window ◽  
Time Profile ◽  
Signal Model ◽  
Prediction Time ◽  
Actual Signal ◽  
Signal Significance ◽  
Supernova Neutrino ◽  
Combined Detection ◽  
Expected Signal

Abstract Supernova neutrino detection in neutrino and dark matter experiments is usually implemented as a real-time trigger system based on counting neutrino interactions within a moving time window. The sensitivity reach of such experiments can be improved by taking into account the time profile of the expected signal. We propose a shape analysis of the incoming experimental data based on a log likelihood ratio variable containing the assumed signal shape. This approach also allows a combination of potential supernova signals in different detectors for a further sensitivity boost. The method is tested on the NOvA detectors to study their combined sensitivity to the core-collapse supernova signal, and also on KamLAND, Borexino and SK-Gd as potential detectors of presupernova neutrinos. Using the shape analysis enhances the signal significance for supernova detection and prediction, as well as the sensitivity reach of the experiment. It also extends the supernova prediction time when applied to the presupernova neutrino signal detection. Enhancements achieved with the shape analysis persist even in the case when the actual signal doesn't match the expected signal model.

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