what's page are loaded into buffer pool for specified table

Code
select * from sys.dm_os_buffer_descriptors bp inner join
    (
        select OBJECT_ID,allocation_unit_id from 
            sys.allocation_units au 
            inner join 
            sys.partitions p 
            on au.container_id=p.hobt_id where au.type in (1,3)
        union 
        select OBJECT_ID,allocation_unit_id from 
            sys.allocation_units au 
            inner join 
            sys.partitions p 
            on au.container_id=p.partition_id where au.type in (2)
    ) as al
on al.allocation_unit_id=bp.allocation_unit_id
where al.OBJECT_ID=object_id('tableName') and database_id=DB_ID()