DarkBit: a GAMBIT module for computing dark matter observables and likelihoods

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Title: DarkBit: a GAMBIT module for computing dark matter observables and likelihoods
Authors: Bringmann, T
Conrad, J
Cornell, JM
Dal, LA
Edsjo, J
Farmer, B
Kahlhoefer, F
Kvellestad, A
Putze, A
Savage, C
Scott, P
Weniger, C
White, M
Wild, S
Item Type: Journal Article
Abstract: We introduce DarkBit, an advanced software code for computing dark matter constraints on various extensions to the Standard Model of particle physics, comprising both new native code and interfaces to external packages. This release includes a dedicated signal yield calculator for gamma-ray observations, which significantly extends current tools by implementing a cascade-decay Monte Carlo, as well as a dedicated likelihood calculator for current and future experiments (gamLike). This provides a general solution for studying complex particle physics models that predict dark matter annihilation to a multitude of final states. We also supply a direct detection package that models a large range of direct detection experiments (DDCalc), and that provides the corresponding likelihoods for arbitrary combinations of spin-independent and spin-dependent scattering processes. Finally, we provide custom relic density routines along with interfaces to DarkSUSY, micrOMEGAs, and the neutrino telescope likelihood package nulike. DarkBit is written in the framework of the Global And Modular Beyond the Standard Model Inference Tool (GAMBIT), providing seamless integration into a comprehensive statistical fitting framework that allows users to explore new models with both particle and astrophysics constraints, and a consistent treatment of systematic uncertainties. In this paper we describe its main functionality, provide a guide to getting started quickly, and show illustrative examples for results obtained with DarkBit (both as a stand-alone tool and as a GAMBIT module). This includes a quantitative comparison between two of the main dark matter codes (DarkSUSY and micrOMEGAs), and application of DarkBit ’s advanced direct and indirect detection routines to a simple effective dark matter model.
Issue Date: 6-Dec-2017
Date of Acceptance: 22-Aug-2017
ISSN: 1434-6044
Publisher: Springer Verlag (Germany)
Journal / Book Title: European Physical Journal C: Particles and Fields
Volume: 77
Issue: 12
Copyright Statement: © The Author(s) 2017. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (, which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Sponsor/Funder: Science and Technology Facilities Council (STFC)
Funder's Grant Number: ST/K00414X/1
Keywords: Science & Technology
Physical Sciences
Physics, Particles & Fields
0206 Quantum Physics
0202 Atomic, Molecular, Nuclear, Particle And Plasma Physics
Nuclear & Particles Physics
Publication Status: Published
Article Number: ARTN 831
Appears in Collections:Physics
Faculty of Natural Sciences

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