We introduce a novel class of signatures—spectral edges and end points—in 21-cm measurements resulting from interactions between the standard and dark sectors. Within the context of a kinetically mixed dark photon, we demonstrate how resonant dark photon-to-photon conversions can imprint distinctive spectral features in the observed 21-cm brightness temperature, with implications for current, upcoming, and proposed experiments targeting the cosmic dawn and the dark ages. These signatures open up a qualitatively new way to look for physics beyond the Standard Model using 21-cm observations.

Edges and Endpoints in 21-cm Observations from Resonant Photon Production / Caputo, Andrea; Liu, Hongwan; Mishra-Sharma, Siddharth; Pospelov, Maxim; Ruderman, Joshua T.; Urbano, ALFREDO LEONARDO. - In: PHYSICAL REVIEW LETTERS. - ISSN 1079-7114. - (2021). [10.1103/PhysRevLett.127.011102]

Edges and Endpoints in 21-cm Observations from Resonant Photon Production

Alfredo Urbano
2021

Abstract

We introduce a novel class of signatures—spectral edges and end points—in 21-cm measurements resulting from interactions between the standard and dark sectors. Within the context of a kinetically mixed dark photon, we demonstrate how resonant dark photon-to-photon conversions can imprint distinctive spectral features in the observed 21-cm brightness temperature, with implications for current, upcoming, and proposed experiments targeting the cosmic dawn and the dark ages. These signatures open up a qualitatively new way to look for physics beyond the Standard Model using 21-cm observations.
2021
Cosmology, 21 cm, dark matter
01 Pubblicazione su rivista::01a Articolo in rivista
Edges and Endpoints in 21-cm Observations from Resonant Photon Production / Caputo, Andrea; Liu, Hongwan; Mishra-Sharma, Siddharth; Pospelov, Maxim; Ruderman, Joshua T.; Urbano, ALFREDO LEONARDO. - In: PHYSICAL REVIEW LETTERS. - ISSN 1079-7114. - (2021). [10.1103/PhysRevLett.127.011102]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1645108
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