KEK Theory Meeting on Particle Physics Phenomenology (KEK-PH2018)

Colored Dark Matter

14 Feb 2018, 09:00

30m

Building 3 1F, Seminar Hall (KEK)

Talks

Speaker

Alessandro Strumia (Pisa U & INFN & CERN)

Description

We explore the possibility that Dark Matter is the lightest hadron made of two stable color octet Dirac fermions $\text{Undefined control sequence Q}$. The cosmological DM abundance is reproduced for $\text{Undefined control sequence Q}$, compatibly with direct searches (the Rayleigh cross section, suppressed by $\text{Undefined control sequence Q}$, is close to present bounds), indirect searches (enhanced by $\text{Undefined control sequence Q}$ recombination), and with collider searches (where $\text{Undefined control sequence Q}$ manifests as tracks, pair produced via QCD). Hybrid hadrons, made of $\text{Undefined control sequence Q}$ and of SM quarks and gluons, have large QCD cross sections, and do not reach underground detectors. Their cosmological abundance is ${10}^5$ times smaller than DM, such that their unusual signals seem compatible with bounds. Those in the Earth and stars sank to their centers; the Earth crust and meteorites later accumulate a secondary abundance, although their present abundance depends on nuclear and geological properties that we cannot compute from first principles.

Presentation materials

Slides

2017-compositeDM.pdf