  The Heavy Flavor Averaging Group provides this Letter of Interest (LOI) as
input to the Snowmass 2021 Particle Physics Community Planning Exercise
organized by the Division of Particles and Fields of the American Physical
Society. Research in heavy flavor physics is an essential component of particle
physics, both within and beyond the Standard Model. To fully realize the
potential of this field, we advocate strong support within the U.S. high energy
physics program for ongoing and future experimental and theory research in
heavy flavor physics.
