Nov 26 – 30, 2018
PUCP
America/Lima timezone
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Resonant production of dark photons in positron beam dump experiments

Nov 26, 2018, 2:15 PM
15m
Room N101, McGregor Building (PUCP)

Room N101, McGregor Building

PUCP

Parallel Talk (Theory) Beyond the Standard Model Parallel Talks B

Speaker

Cristian David RUIZ CARVAJAL (Universidad de Antioquia)

Description

Positrons beam dump experiments have unique features to search for very narrow resonances coupled superweakly to $e^+ e^-$ pairs. Due to the continue loss of energy from soft photon bremsstrahlung, in the first few radiation lengths of the dump a positron beam can continuously scan for resonant production of new resonances via $e^+$ annihilation off an atomic $e^-$ in the target. We explore the foreseeable sensitivity of the Frascati PADME experiment to searching, with this resonance annihilation technique, the $17$ MeV dark photon invoked to explain the $^8$Be anomaly in nuclear transitions.

arXiv arXiv:1802.04756

Primary authors

Cristian David RUIZ CARVAJAL (Universidad de Antioquia) Enrico Nardi (INFN, Laboratori Nazionali di Frascati, Italy) Dr Davide Meloni (University of Roma Tre) Mauro Raggi (LNF INFN) Anish Ghoshal (INFN, Laboratori Nazionali di Frascati, Italy, Dipartimento di Matematica e Fisica, Universit\`a di Roma Tre, Italy)

Presentation materials