International Workshop on Future Linear Colliders, LCWS2024

Searches for BSM physics at a gamma-gamma collider with Energy < 12 GeV based on European XFEL

9 Jul 2024, 14:20

20m

Fukutake Hall

Oral presentation (in person) BSM, Global Interpretations BSM, Global Interpretations

Speaker

Marten Berger (University of Hamburg)

Description

The possibility of a Gamma-Gamma collider extension to the Beam
dump of the $17.5$ GeV European XFEL has been discussed before as
a first high energy collider of its sort. It would not just be to study
the concept of a gamma-gamma collider but this collider would also
be without competition in the region of $5-12$ GeV for gamma-gamma
physics. In this range $b\overline{b}$ and $c\overline{c}$ resonances, tetraquarks as well as mesonic molecules can be observed. Furthermore some BSM processes can also be reached in this range. In this talk we want to discuss the possibility of observing ALPs at this collider as well as an extension to a mixed model of ALPs and dark photon (dark axion portal), that introduces the new couplings not as a product of the individual couplings and therefore offers a rich phenomenology.

Presentation materials

GammaGammaCollider.pdf

Peer reviewing

Paper

Accepted on 6 Nov 2024 by Junping Tian

Searches_for_BSM_physics_at_a_gamma_gamma_collider_with_Energy.pdf