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General Heavy WIMP Direct Detection

Aug 10, 2022, 2:15 PM
15m
Oral report TeV物理和超出标准模型新物理 Parallel Session V (1):TeV and BSM Physics

Speaker

Qing Chen (University of Science and Technology of China)

Description

Weakly-Interacting-Massive-Particles (WIMPs) are a large class of viable dark matter candidates. We employ heavy particle effective field theory to compute general heavy electroweak multiplets and nucleon elastic scattering up to heavy mass $1/M$ order.

For certain electroweak multiplets, leading order effective theory calculation shows a generic amplitude-level cancellation that yields a severe suppression of the cross section for WIMP-nucleon scattering,
leaving them robust candidates surviving current direct detection experimental sensitivities.

We here perform computation for arbitrary electroweak representations for
all spin-0, spin-1/2, spin-1 and spin-3/2 heavy particles, combining contributions from perturbative QCD and nuclear effects
by state-of-the-art chiral effective theory calculations, and obtain a comprehensive and model-independent WIMP-nucleon benchmark cross section and
WIMP-nucleus direct detection event rate.

Primary author

Qing Chen (University of Science and Technology of China)

Presentation materials