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HK: Fachverband Physik der Hadronen und Kerne

HK 35: Hadron Structure and Spectroscopy V

HK 35.2: Vortrag

Dienstag, 12. März 2024, 18:00–18:15, HBR 62: EG 19

Search for stable sexaquarks at the LHCb experiment — •Ellinor Eckstein — HISKP, Bonn University

One of the most prominent questions in the astrophysics and particle physics communities is the nature of dark matter (DM).

This talk will give an introduction to the sexaquark (S), a hypothetical particle with uuddss quark content, first proposed by Glennys R. Farrar. In contrast to the so called H-dibaryon, sharing the same quark content, the S is assumed to be a tightly bound state. Its unique symmetry structure implies strong binding, thus, a state so low in mass that it is stable on cosmological scales could be possible. Experimental searches to date are not able to rule out such a long lived state. In addition to the S being an excellent DM candidate, it could also shed some light into the (g−2) muon puzzle. As a missing hadronic final state in R measurements, it would narrow the gap between standard model prediction and the experimental value of the anomalous magnetic moment of the muon.

The various predictions regarding requirements the S has to fulfil to be eligible as DM candidate as well as constraints on S DM from astronomical observations and particle physics experiments will be discussed. Further, discovery strategies of the S at the LHCb experiment will be explored, with emphasis on its production in heavy flavoured baryon decays.

Keywords: LHCb; Dark Matter; Sexaquark