Find Which Transaction is currently Running

SELECT s_tst.[session_id],
   s_es.[login_name] AS [Login Name],
   S_tdt.[database_transaction_begin_time] AS [Begin Time],
   s_tdt.[database_transaction_log_record_count] AS [Log Records],
   s_tdt.[database_transaction_log_bytes_used] AS [Log Bytes],
   s_tdt.[database_transaction_log_bytes_reserved] AS [Log Reserved],
   s_est.[text] AS [Last T-SQL Text],
   s_eqp.[query_plan] AS [Last Query Plan]
FROM sys.dm_tran_database_transactions s_tdt
   JOIN sys.dm_tran_session_transactions s_tst
      ON s_tst.[transaction_id] = s_tdt.[transaction_id]
   JOIN sys.[dm_exec_sessions] s_es
      ON s_es.[session_id] = s_tst.[session_id]
   JOIN sys.dm_exec_connections s_ec
      ON s_ec.[session_id] = s_tst.[session_id]
   CROSS APPLY sys.dm_exec_sql_text (s_ec.[most_recent_sql_handle]) AS s_est
   OUTER APPLY sys.dm_exec_query_plan (s_ec.[most_recent_sql_handle]) AS s_eqp
ORDER BY [Begin Time] ASC;