Solution
= Solution
\b[Covered by the official notes:] forward collinear laboratory energy (PDF p. 11; handwritten p. 6).<Symmetry and Relativity 2011 Exam Solution Notes>[PDF p. 11; handwritten p. 6: forward collinear laboratory energy]{ref}
= Solution
\b[Covered by the official notes:] forward collinear laboratory energy (PDF p. 11; handwritten p. 6).<Symmetry and Relativity 2011 Exam Solution Notes>[PDF p. 11; handwritten p. 6: forward collinear laboratory energy]{ref}