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Abstract
Strong dynamics provides ample new opportunities for explanation of Dark Matter (DM) in terms of stable composite particles. First, I will give a brief outlook of the existing composite DM scenarios and their compelling phenomenological implications for the direct and indirect detection measurements. Then, I will focus on a novel class of Dark Matter (DM) candidates in the form of a heavy composite Axion-Like Particle (ALP) with highly suppressed electromagnetic interactions populating vast yet unexplored domains in the ALP parameter space. I will demonstrate how the simplest confining gauge theory in the dark sector yields a composite ALP state in the form of glueballs. Such a glueball ALP (GALP) features very specific properties such as unique electromagnetic coupling-mass relation found in terms of two distinct fundamental scales -- the large dark fermion mass scale and the dynamical scale of dark confinement. Finally, I will overview novel phenomenological probes for composite DM, in particular, for direct detection experiments such as PandaX.
Biography
Roman Pasechnik is Associate Professor of Theoretical Physics at Lund University (Sweden, since 2015). Born in 1983, he earned his Ph.D. at JINR (Russia, 2009) and his habilitation at Lund (2014). With 160 peer-reviewed publications (h-index 31), his research spans Higgs physics, dark matter, QCD, models for New Physics and early-Universe gravitational waves and their cosmological implications. He has held Humboldt and Trygger fellowships and visiting professorships in Czechia, Brazil, and Chile. Leading an international team, he discovered the Odderon and proposed minimal Higgs–lepton unification. He teaches quantum field theory and cosmology, serves on editorial boards (Frontiers, Universe), and participates in LISA, SKA, and has represented Sweden on ECFA and C11 IUPAP commission.
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Online link: https://meeting.tencent.com/dm/NSPe98EqILDN
Meeting ID: 372370075 No Password