10 research outputs found
Strongly Interacting Dark Matter from Gauge Theory
The stable hadronic bound states in a hidden new non-Abelian gauge sector
provide interesting candidates for strongly-interacting Dark Matter (DM). A
particular example are theories in which DM is made up of dark pions which set
the DM relic abundance through self-annihilation. One of the simplest
realizations is gauge theory with two Dirac fermions. We discuss its
mesonic multiplets for degenerate and non-degenerate fermions, construct a
low-energy effective theory and present lattice results for the pseudoscalar
mesons and vector mesons.Comment: 7 pages, 2 figures, Contribution to the proceedings of the 15th Quark
Confinement and the Hadron Spectrum conference (ConfXV), 1st-6th August 2022,
Stavanger, Norwa
Strongly Interacting Dark Matter from Sp(4) Gauge Theory
The stable hadronic bound states in a hidden new non-Abelian gauge sector provide interesting candidates for strongly-interacting Dark Matter (DM). A particular example are theories in which DM is made up of dark pions which set the DM relic abundance through self-annihilation. One of the simplest realizations is Sp(4)c gauge theory with two Dirac fermions. We discuss its mesonic multiplets for degenerate and non-degenerate fermions, construct a low-energy effective theory and present lattice results for the pseudoscalar mesons and vector mesons
Theory, phenomenology, and experimental avenues for dark showers: a Snowmass 2021 report
In this work, we consider the case of a strongly coupled dark/hidden sector,
which extends the Standard Model (SM) by adding an additional non-Abelian gauge
group. These extensions generally contain matter fields, much like the SM
quarks, and gauge fields similar to the SM gluons. We focus on the exploration
of such sectors where the dark particles are produced at the LHC through a
portal and undergo rapid hadronization within the dark sector before decaying
back, at least in part and potentially with sizeable lifetimes, to SM
particles, giving a range of possibly spectacular signatures such as emerging
or semi-visible jets. Other, non-QCD-like scenarios leading to soft unclustered
energy patterns or glueballs are also discussed. After a review of the theory,
existing benchmarks and constraints, this work addresses how to build
consistent benchmarks from the underlying physical parameters and present new
developments for the PYTHIA Hidden Valley module, along with jet substructure
studies. Finally, a series of improved search strategies is presented in order
to pave the way for a better exploration of the dark showers at the LHC.Comment: Uniform notation, fixed typos, improved numerical analysis, added
references, comments welcom
Theory, phenomenology, and experimental avenues for dark showers: a Snowmass 2021 report
In this work, we consider the case of a strongly coupled dark/hidden sector, which extends the Standard Model (SM) by adding an additional non-Abelian gauge group. These extensions generally contain matter fields, much like the SM quarks, and gauge fields similar to the SM gluons. We focus on the exploration of such sectors where the dark particles are produced at the LHC through a portal and undergo rapid hadronization within the dark sector before decaying back, at least in part and potentially with sizeable lifetimes, to SM particles, giving a range of possibly spectacular signatures such as emerging or semi-visible jets. Other, non-QCD-like scenarios leading to soft unclustered energy patterns or glueballs are also discussed. After a review of the theory, existing benchmarks and constraints, this work addresses how to build consistent benchmarks from the underlying physical parameters and present new developments for the PYTHIA Hidden Valley module, along with jet substructure studies. Finally, a series of improved search strategies is presented in order to pave the way for a better exploration of the dark showers at the LHC
Theory, phenomenology, and experimental avenues for dark showers: a Snowmass 2021 report
In this work, we consider the case of a strongly coupled dark/hidden sector, which extends the Standard Model (SM) by adding an additional non-Abelian gauge group. These extensions generally contain matter fields, much like the SM quarks, and gauge fields similar to the SM gluons. We focus on the exploration of such sectors where the dark particles are produced at the LHC through a portal and undergo rapid hadronization within the dark sector before decaying back, at least in part and potentially with sizeable lifetimes, to SM particles, giving a range of possibly spectacular signatures such as emerging or semi-visible jets. Other, non-QCD-like scenarios leading to soft unclustered energy patterns or glueballs are also discussed. After a review of the theory, existing benchmarks and constraints, this work addresses how to build consistent benchmarks from the underlying physical parameters and present new developments for the PYTHIA Hidden Valley module, along with jet substructure studies. Finally, a series of improved search strategies is presented in order to pave the way for a better exploration of the dark showers at the LHC
The ECFA Early Career Researcher's Panel: composition, structure, and activities, 2021 -- 2022
The European Committee for Future Accelerators (ECFA) Early Career Researcher's (ECR) panel, which represents the interests of the ECR community to ECFA, officially began its activities in January 2021. In the first two years, the panel has defined its own internal structure, responded to ECFA requests for feedback, and launched its own initiatives to better understand and support the diverse interests of early career researchers. This report summarises the panel composition and structure, as well as the different activities the panel has been involved with during the first two years of its existence
The ECFA Early Career Researcher's Panel: composition, structure, and activities, 2021 -- 2022
The European Committee for Future Accelerators (ECFA) Early Career Researcher's (ECR) panel, which represents the interests of the ECR community to ECFA, officially began its activities in January 2021. In the first two years, the panel has defined its own internal structure, responded to ECFA requests for feedback, and launched its own initiatives to better understand and support the diverse interests of early career researchers. This report summarises the panel composition and structure, as well as the different activities the panel has been involved with during the first two years of its existence
The ECFA Early Career Researcher's Panel: composition, structure, and activities, 2021 -- 2022
The European Committee for Future Accelerators (ECFA) Early Career Researcher's (ECR) panel, which represents the interests of the ECR community to ECFA, officially began its activities in January 2021. In the first two years, the panel has defined its own internal structure, responded to ECFA requests for feedback, and launched its own initiatives to better understand and support the diverse interests of early career researchers. This report summarises the panel composition and structure, as well as the different activities the panel has been involved with during the first two years of its existence
The ECFA Early Career Researcher's Panel: composition, structure, and activities, 2021 -- 2022
The European Committee for Future Accelerators (ECFA) Early Career Researcher's (ECR) panel, which represents the interests of the ECR community to ECFA, officially began its activities in January 2021. In the first two years, the panel has defined its own internal structure, responded to ECFA requests for feedback, and launched its own initiatives to better understand and support the diverse interests of early career researchers. This report summarises the panel composition and structure, as well as the different activities the panel has been involved with during the first two years of its existence
Results of the 2021 ECFA Early-Career Researcher Survey on Training in Instrumentation
The European Committee for Future Accelerators (ECFA) Early-Career Researchers (ECR) Panel was invited by the ECFA Detector R&D Roadmap conveners to collect feedback from the European ECR community. A working group within the ECFA ECR panel held a Townhall Meeting to get first input, and then designed and broadly circulated a detailed survey to gather feedback from the larger ECR community. A total of 473 responses to this survey were received, providing a useful overview of the experiences of ECRs in instrumentation training and related topics. This report summarises the feedback received, and is intended to serve as an input to the ECFA Detector R&D Roadmap process