That is a new paper by Bob Hall (you must scroll down to get to the pdf), here is the abstract:
Answer: Between 2007 and 2014, GDP growth was held back by shortfalls of
4.4 percent in productivity
4.0 percent in capital input
3.6 percent in labor-force participation
2.2 percent in growth of the working-age population
Any further questions you might have?
There are other interesting macro papers at the link, and hat tip goes to Greg Mankiw.