GET production/_search
{
  "query": {
    "query_string": {
      "query": "source:hal AND (host.publicationDate.normalized:2021 OR host.electronicPublicationDate.normalized:2021) NOT business.xPublicationDate.normalized:2021"
    }
  },
  "aggs": {
    "nomsSession": {
      "terms": {
        "field": "technical.sessionName",
        "size": 100
      }
    }
  }, 
  "version": true, 
  "_source": ["sourceUid","host.electronicPublicationDate","business.xPublicationDate"],
    "track_total_hits": true
}