2nd Edition of the Workshop 'Quarkonia meet Dark Matter' (QMDM)

Session

Thursday - Session 4

21 Mar 2024, 16:05

Auditorium (Institute for Advanced Study, Technical University of Munich)

10. Exploring new physics with pulsar timing arrays

Carlo Tasillo (DESY Hamburg)

21/03/2024, 16:05

4. Gravitational waves, astrophysical and collider phenomenology

Earlier this year several pulsar timing arrays unveiled the first detection of the stochastic gravitational wave background at nano-Hertz frequencies. The background could potentially arise from myriad merging black holes or – arguably more exciting – an event in the early cosmos. In this talk, I will discuss two recent works on the origin of the new signal: First, I will show under which...

66. Simulation and Indirect Detection of Dark Glueball Showers

Caleb Gemmell (University of Toronto)

21/03/2024, 16:25

4. Gravitational waves, astrophysical and collider phenomenology

Parton showers are part and parcel of particle phenomenology, but what in the case of a confining dark sector with no light quarks below the confinement scale? The only available hadronic states are dark glueballs, composite dark gluon states. To date, there have been very few quantitative studies of dark shower signatures with dark glueball final states, despite the fact they commonly appear...

41. Gravitational waves from non-Abelian dark sectors coupled to inflation

Helena Kolesova (University of Stavanger)

21/03/2024, 16:45

4. Gravitational waves, astrophysical and collider phenomenology

Taking axion inflation as an example, we study the evolution of a non-Abelian dark sector coupled to inflaton for different choices of the confinement scale. For confinement scales just a few orders of magnitude below the Planck scale, gravitational wave signal generated by fluctuations in the thermal plasma may become relevant. Another possible source of gravitational waves is the confinement...

38. Gravitational waves from confinement in improved holographic QCD

Enrico Morgante (U. Trieste)

21/03/2024, 17:10

4. Gravitational waves, astrophysical and collider phenomenology

We analyze the phase transition in improved holographic QCD and obtain an estimate of the gravitational wave signal emitted in the confinement transition of a pure SU(N) Yang-Mills dark sector.

73. The Higgsless Simulations of First-order Phase Transition

Henrique Rubira (TUM)

21/03/2024, 17:35

4. Gravitational waves, astrophysical and collider phenomenology

Since the LIGO-Virgo-KAGRA gravitational wave (GW) detection from binary systems, GWs have become one of the most promising probes of cosmology and fundamental physics. The GW agenda is complemented by Pulsar Timing Arrays (PTA) probing the nHz frequency band, such as the European PTA (EPTA) and NANOGrav, both recently reporting a 3sigma evidence for a GW background. A next major step in that...