Erratum: Collision monochromatization in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>e</mml:mi><mml:mo>+</mml:mo></mml:msup><mml:msup><mml:mi>e</mml:mi><mml:mo>−</mml:mo></mml:msup></mml:math> colliders [Phys. Rev. Accel. Beams <b>20</b> , 051001 (2017)]
Physical review. Accelerators and beams