9th International Conference on High Energy Particle and Nuclear Physics in the LHC Era

Session

Parallel session 3: Beyond The Standard Model (1/2)

7 Jan 2025, 16:50

Building A (Santa Maria University)

494. Completing the Exploration of the Minimal Dark Matter Paradigm

Prof. Alfonso Zerwekh (Universidad Tecnica Federico Santa Maria)

07/01/2025, 16:50

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The Minimal Dark Matter idea postulates that the dark matter can be the neutral component of an $SU(2)_L$ multiplet. This idea has been intensively studied for the case of fermion and scalar fields. For many years, our group have extended this paradigm to the case of massive vector fields. We have studied the phenomenology of vector dark matter for vector fields in the fundamental, adjoint and...

475. Dynamical String Tension Theories with target space scale invariance SSB and restoration

Eduardo Leon Guendelman (Ben Gurion University)

07/01/2025, 17:10

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The string and brane tensions do not have to be put in by hand, they can be dynamically generated, as in the case when we formulate string and brane theories in the modified measure formalism. Then string and brane tensions appears, but as an additional dynamical degree of freedom . It can be seen however that these string or brane tensions are not universal, but rather each string and each...

458. Displaced ALPs from top decays at the LHC

Giovanna Cottin (Pontificia Universidad Católica de Chile (CL))

07/01/2025, 17:30

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I will present a study on axion-like particles (ALPs) with quark-flavor-violating couplings at the LHC. The ALPs can originate from decays of top quarks which are pair produced, and then decay to jets. If these couplings to the quarks are tiny and the ALPs have masses of the order of 10 GeV, they are long-lived, leading to signatures of displaced vertex plus multiple jets. We recast a recent...

545. Using ultraperipheral collisions of lead ions to find signals of a new charged vector boson decaying into heavy neutral leptons.

Yohan Mauricio Oviedo Torres (SAPHIR)

07/01/2025, 17:50

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In this study, we present the potential of discovering new physics associated with a new charged vector boson decaying into heavy neutral leptons, using ultraperipheral lead ion collisions. We identify the optimal kinematic cuts that increase the statistical significance, which would allow us to detect signals of the possible existence of these particles, as predicted by the Vector Scotogenic...