We employ an effective field theory to study the detectability of sub-GeV dark matter through its interaction with the gapless excitations of superfluid 4He. In a quantum field theory language, the possible interactions between the dark matter and the superfluid phonon are solely dictated by symmetry. We compute the rate for the emission of one and two phonons, and show that these two observables combined allow for a large exclusion region for the dark matter masses. Our approach allows a direct calculation of the differential distributions, even though it is limited only to the region of softer phonon excitations, where the effective field theory is well defined. The method presented here is easily extendible to different models of dark matter.

Sub-GeV dark matter in superfluid He-4: an effective theory approach / Acanfora, F.; Esposito, A.; Polosa, A. D.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - 79:7(2019). [10.1140/epjc/s10052-019-7057-0]

Sub-GeV dark matter in superfluid He-4: an effective theory approach

Acanfora F.
Membro del Collaboration Group
;
Esposito A.
Membro del Collaboration Group
;
Polosa A. D.
Membro del Collaboration Group
2019

Abstract

We employ an effective field theory to study the detectability of sub-GeV dark matter through its interaction with the gapless excitations of superfluid 4He. In a quantum field theory language, the possible interactions between the dark matter and the superfluid phonon are solely dictated by symmetry. We compute the rate for the emission of one and two phonons, and show that these two observables combined allow for a large exclusion region for the dark matter masses. Our approach allows a direct calculation of the differential distributions, even though it is limited only to the region of softer phonon excitations, where the effective field theory is well defined. The method presented here is easily extendible to different models of dark matter.
2019
dark matter detection; effective quantum field theories
01 Pubblicazione su rivista::01a Articolo in rivista
Sub-GeV dark matter in superfluid He-4: an effective theory approach / Acanfora, F.; Esposito, A.; Polosa, A. D.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - 79:7(2019). [10.1140/epjc/s10052-019-7057-0]
File allegati a questo prodotto
File Dimensione Formato  
Acanfora_Sub-GeV_2019.pdf

accesso aperto

Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Creative commons
Dimensione 311.31 kB
Formato Adobe PDF
311.31 kB Adobe PDF

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1379107
Citazioni
  • ???jsp.display-item.citation.pmc??? 0
  • Scopus 32
  • ???jsp.display-item.citation.isi??? 31
social impact