Particle Physics 4th Edition - Errata Problem 2.11, Section E (Answers to selected questions) The exponent in the expression for lambda should 12 and not 6, i.e. lambda = 7x1012. The rest of the solution is correct, as is the full solution on the book's website. Solution to Problem 4.11 on p444 (Answers to selected questions) The solution should read: The full solution given on the book’s web page should be: For small , the Bethe-Bloch formula may be written . the former has a maximum for , where , so that . The solution appears in both the students’ and instructors’ solutions. Particle Physics, Fourth Edition. B.R. Martin and G. Shaw. © 2017 John Wiley & Sons, Ltd. Published 2017 by John Wiley & Sons, Ltd. Companion website: www.wiley.com/go/martin/particlephysics4