Sorting based on boost factor

Hi

I have created a search collection with the below boost factor:

{"content_collection"=>{"album"=>{"properties"=>{"title"=>{"type"=>"string"}, "track_titles"=>{"boost"=>2.0, "type"=>"string"}, "artists_names"=>{"boost"=>3.0, "type"=>"string"}}}}}

Tried to search using :
curl 'http://localhost:9200/content_collection/album/_search' -d '
{
"query" : {
"dis_max" : {
"queries" : [
{
"field" : { "artists_names" : { "query" : " Tetsu utitled club", "boost" : 3.0}}
},
{
"field" : { "track_titles" : { "query" : "Tetsu untitled club", "boost" : 2.0}}
},
{
"field" : { "title" : { "query" : "Tetsu untitled club", "boost" : 1.0}}
}
]
}
}
}
'
Requirement is that the search result should order according to the boost factor. If the search text is brain: Then it should search for all the three fields with the search string and should respond with the order of boost.
So the records which matches with the artist_names should appear first followed by the records which matches against the track_titles and title. But it is coming in some other sequence and not considering the boost factor.

Need help for the same.

Thanks!