<record>
  <controlfield tag="001">3297</controlfield>
  <datafield tag="653" ind1="1" ind2=" ">
    <subfield code="a">Dark sector</subfield>
  </datafield>
  <datafield tag="653" ind1="1" ind2=" ">
    <subfield code="a">Dark photon</subfield>
  </datafield>
  <datafield tag="653" ind1="1" ind2=" ">
    <subfield code="a">Dark matter</subfield>
  </datafield>
  <datafield tag="653" ind1="1" ind2=" ">
    <subfield code="a">physics beyond the standard model</subfield>
  </datafield>
  <datafield tag="653" ind1="1" ind2=" ">
    <subfield code="a">feebly interacting particles </subfield>
  </datafield>
</record>