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We propose a scotogenic extension of the Standard Model which can provide a scalar Dark Matter candidate in the new, theoretically previously unaddressed, intermediate region ($200\leq M_{DM}\leq 550$ GeV) and also generate light Dirac…

高能物理 - 唯象学 · 物理学 2023-07-26 Nilavjyoti Hazarika , Kalpana Bora

We demonstrate the potential of Deep Learning methods for measurements of cosmological parameters from density fields, focusing on the extraction of non-Gaussian information. We consider weak lensing mass maps as our dataset. We aim for our…

宇宙学与河外天体物理 · 物理学 2017-07-19 Jorit Schmelzle , Aurelien Lucchi , Tomasz Kacprzak , Adam Amara , Raphael Sgier , Alexandre Réfrégier , Thomas Hofmann

The neutrino mass and dark matter (DM) problems are addressed in a Standard Model extension where the type-II seesaw and scotogenic mechanisms coexist. The model features a flavour $\mathcal{Z}_8$ discrete symmetry which is broken down to a…

高能物理 - 唯象学 · 物理学 2022-08-24 D. M. Barreiros , H. B. Camara , F. R. Joaquim

Markov Chain Monte Carlo (MCMC) techniques are now widely used for cosmological parameter estimation. Chains are generated to sample the posterior probability distribution obtained following the Bayesian approach. An important issue is how…

天体物理学 · 物理学 2009-11-10 Joanna Dunkley , Martin Bucher , Pedro G. Ferreira , Kavilan Moodley , Constantinos Skordis

Markov-chain Monte Carlo sampling has become a standard technique for exploring the posterior distribution of cosmological parameters constrained by observations of CMB anisotropies. Given an infinite amount of time, any MCMC sampler will…

天体物理学 · 物理学 2007-05-23 Anze Slosar , Michael Hobson

Multi-dimensional parameter spaces are commonly encountered in physics theories that go beyond the Standard Model. However, they often possess complicated posterior geometries that are expensive to traverse using techniques traditional to…

机器学习 · 计算机科学 2025-02-21 Dorian W. P. Amaral , Shixiao Liang , Juehang Qin , Christopher Tunnell

We investigate a minimal scale-invariant implementation of the scotogenic model and show that viable electroweak symmetry breaking can occur while simultaneously generating one-loop neutrino masses and the dark matter relic abundance. The…

高能物理 - 唯象学 · 物理学 2016-08-23 Amine Ahriche , Kristian L. McDonald , Salah Nasri

Non-zero neutrino mass and dark matter cast a shadow over the success of the Standard Model (SM) of Particle Physics. The most straightforward extension of the SM to explain these two phenomena is the Scotogenic model, where the SM particle…

高能物理 - 唯象学 · 物理学 2023-02-08 Avnish , Kirtiman Ghosh

Markov chain Monte Carlo (MCMC) methods are widely used in machine learning. One of the major problems with MCMC is the question of how to design chains that mix fast over the whole state space; in particular, how to select the parameters…

机器学习 · 计算机科学 2019-07-16 Kiarash Shaloudegi , András György

In this work, we propose using the mixture density network (MDN) to estimate cosmological parameters. We test the MDN method by constraining parameters of the $\Lambda$CDM and $w$CDM models using Type Ia supernovae and the power spectra of…

宇宙学与河外天体物理 · 物理学 2022-09-05 Guo-Jian Wang , Cheng Cheng , Yin-Zhe Ma , Jun-Qing Xia

We propose an extended $3+1$ Higgs doublet model where the Standard Model (SM) gauge structure is enhanced by the discrete symmetry $Q_6 \times Z_2 \times Z_4$, and the fermion content is extended with right-handed Majorana neutrinos. The…

Constraining Beyond the Standard Model theories usually involves scanning highly multi-dimensional parameter spaces and check observable predictions against experimental bounds and theoretical constraints. Such task is often timely and…

高能物理 - 唯象学 · 物理学 2023-02-08 Fernando Abreu de Souza , Miguel Crispim Romão , Nuno Filipe Castro , Mehraveh Nikjoo , Werner Porod

This article attempts to summarize the effort by the particle physics community in addressing the tedious work of determining the parameter spaces of beyond-the-standard-model (BSM) scenarios, allowed by data. These spaces, typically…

高能物理 - 唯象学 · 物理学 2025-01-30 Rajneil Baruah , Subhadeep Mondal , Sunando Kumar Patra , Satyajit Roy

Our research is focused on two main applications of crowd scene analysis crowd counting and anomaly detection In recent years a large number of researches have been presented in the domain of crowd counting We addressed two main challenges…

计算机视觉与模式识别 · 计算机科学 2025-06-05 Muhammad Junaid Asif

We explore a Standard Model extension based on a local $U(1)_B$ symmetry, where a baryon-charged scalar mediates interactions between a fermionic dark matter candidate and Standard Model quarks. In this setup, the dark matter relic…

高能物理 - 唯象学 · 物理学 2026-02-13 Taramati , Manas Kumar Mohapatra , Utkarsh Patel , Rukmani Mohanta , Sudhanwa Patra

Deep Neural Networks (DNNs) have become very popular for prediction in many areas. Their strength is in representation with a high number of parameters that are commonly learned via gradient descent or similar optimization methods. However,…

机器学习 · 统计学 2016-10-11 Anthony Caterini , Dong Eui Chang

We review theoretical frameworks in which small neutrino masses arise radiatively through interactions with a dark sector that also accounts for cosmological dark matter (DM). A prototype is provided by scotogenic schemes, that extend the…

高能物理 - 唯象学 · 物理学 2026-03-03 Ivania M. Ávila , Anirban Karan , Sanjoy Mandal , Soumya Sadhukhan , José W. F. Valle

In this work, we study a scotogenic extension of the Standard Model featuring two inert scalar doublets and three singlet Majorana fermions, where neutrino masses are generated radiatively at one loop. The lightest among the Majorana…

高能物理 - 唯象学 · 物理学 2026-03-31 Abdelrahman AbuSiam , Amine Ahriche

We investigate flavor phenomenology and dark matter in the context of scotogenic model. In this model, the neutrino masses are generated through radiative corrections at one-loop level. Considering the neutrino mixing matrix to be of…

高能物理 - 唯象学 · 物理学 2016-12-28 Shivaramakrishna Singirala

Models of physics beyond the Standard Model often contain a large number of parameters. These form a high-dimensional space that is computationally intractable to fully explore. Experimental constraints project onto a subspace of viable…

高能物理 - 理论 · 物理学 2022-01-05 Jacob Hollingsworth , Michael Ratz , Philip Tanedo , Daniel Whiteson